JP2000115674A - Audio-video editing system - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an audio-video editing system that can edit audio and video from a digital VTR at a lower cost and more efficiently than in the past, and can speed up the editing. provide. SOLUTION: When editing a VTR signal using a hard disk (HDD) 100, a hard disk drive H
1 and the hard disk 100 to the IEEE 139
By directly interfacing with the 4 bus B1, a recording area for the audio and video digital stream signals on the hard disk 100 is set so that the recording positions of the digital stream signals are continuous, and only the digital stream signals are stored in that area. The data is recorded and the continuity of data at the time of recording and reproduction is maintained with respect to the digital stream signal, and the digital stream signal is edited as a stream signal in a digital signal state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio / video editing system for digitally editing audio and video from a video tape recorder using a memory disk such as a hard disk as a recording medium.

[0002]

2. Description of the Related Art Conventionally, a VTR that records and reproduces audio and video on a recording medium, such as a stationary or camera-integrated video tape recorder (VTR), has been used.
In order to edit the audio and video recorded on the recording medium, the audio and video are reproduced by a VTR, and the audio and video are digitally reproduced using another recording medium, for example, a memory disk such as a hard disk. An audio-video editing system capable of editing is used.

In such a conventional audio-video editing system, the above-mentioned VTR is a digital VTR for digitally recording and reproducing audio and video on a recording medium.
The case where the digital VTR is used will be described below as an example.

In this audio / video editing system, as shown in FIG. 5, a digital VTR (DVC) 500 and a personal computer (personal computer) P1 are connected to a single bus line (digital for audio and video standardized by IEEE1394). Stream bus, hereinafter simply IEEE
E1394 bus B1), and an audio (sound) digital stream signal and a video (video) that have been DVC-compressed by the DVC 500, respectively.
All digital data of an AV digital stream signal composed of a digital stream signal and the like and a control signal composed of a command for controlling the DVC 500 and a status signal of the DVC 500, etc.
It has a digital interface capable of inputting and outputting data to and from the E1394 bus B1 according to a predetermined method, and an interface circuit therefor.

When a user performs a personal computer operation for editing, the DVC 5 is controlled by the CPU 501.
00, IEEE 1394 to the personal computer P1
An AV digital stream signal is transmitted through the bus B1, and the AV digital stream signal is transmitted to the personal computer P1.
A hard disk (HDD) via a 1394-I / F board I1 in which a digital interface and its interface circuit are configured, via a PCI bus B2 which is an internal bus in the personal computer P1, and via an HDD I / F 502 503 is recorded.

As described above, the AV digital stream signal is composed of the audio digital stream signal and the video digital stream signal, and has a continuous signal form on the IEEE1394 bus B1. In the system, non-linear editing is adopted as an editing method, and when data is recorded on the HDD 503, various data are recorded on the HDD 503 in various places on the HDD 503 depending on the situation at that time.

For this reason, even for a continuous AV digital stream signal on the IEEE 1394 bus B1, the HD
It is difficult to record continuously on D503, and recording is discontinuous.

After that, when the user operates the personal computer continuously, the CPU 501 further controls the personal computer.
An AV digital stream signal is reproduced from the HDD 503, and the AV digital stream signal is
502 and the PCI bus B2, 1394-I
After being transmitted to the DVC 500 via the IEEE1394 bus B1 via the / F board I1 and the digital interface, decoded by a codec (not shown) provided in the DVC 500, and converted into an analog video signal, the connection cable K1 Through monitor TV50
Added to 4.

When the user determines a program for an edit cut-in point (start point) and an edit cut-out point (end point) by operating a personal computer while monitoring the reproduced image on the monitor TV 504, the CPU 501 Under the control, the above program is displayed as an edit list on the display monitor D1 for the personal computer via the graphics board G1, and the AV digital stream signal is edited and reproduced from the HDD 503 according to the program, and the AV digital stream signal is , H
While being temporarily stored in the memory (MEM) 505 via the DDI / F 502 and the PCI bus B2,
1394-I / F board I1 via PCI bus B2
And IEEE1 via digital interface
394 bus B1 to the DVC500,
The audio and the video are recorded in an edited state in 500.

In this way, the audio and video recorded on the recording medium by the DVC 500 have been edited.

[0011]

However, in the above-described conventional audio / video editing system, editing of audio and video from the DVC 500 is performed by the personal computer P1 in the H mode.
Even if the personal computer P1 simply captures only the AV digital stream signal into the HDD 503, the personal computer P1 is required to increase the speed of the internal bus, the HDD 503, the HDD I / F 502, and the like. However, there was a problem that the cost as a whole became high.

The HDD 503 of the personal computer P1 has A
Various data other than V digital stream signal are stored in HDD
Since the AV digital stream signal is recorded in various places on the HDD 503, even if the AV digital stream signal is a continuous AV digital stream signal on the IEEE1394 bus B1,
On top of that, it becomes difficult to record continuously, and the AV digital stream signal recorded in such a way becomes inevitably discontinuous at the time of reproduction, and a retry operation for preventing a recording error at the time of the recording. Therefore, there is also a problem that editing of audio and video from the DVC 500 becomes inefficient in time.

The present invention solves the above-mentioned conventional problems. It is possible to edit audio and video from a digital VTR at lower cost and more efficiently than before, and to speed up the editing. To provide an audio-visual editing system capable of doing so.

[0014]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an audio-video editing system according to the present invention uses a memory disk to edit an image from a digital VTR or an analog VTR as an information source. In a memory disk device having a memory disk, by directly interfacing the memory disk with a stream bus standardized for audio and video, a recording area for audio and video digital stream signals on the memory disk As such, the recording positions of these digital stream signals are set so as to be continuous, and only the digital stream signals are recorded in that area, and the continuity of data during recording and reproduction with respect to the digital stream signals is maintained. Allows editing in the digital signal state

Further, the AV / subcode digital stream is controlled by the interface control means, and the AV / subcode digital stream signal is generated by the AV / subcode digital stream signal generation means based on the analog audio and video signals inputted from the outside through the input means. A signal and a control signal are generated and recorded on the memory disk, and conversely, controlled by the interface control means, the AV /
By the subcode digital stream signal, an analog signal for audio and video is generated and output from the output unit,
The analog video signal is also added to the monitor TV and other analog VTRs, edited while monitoring the reproduced image on the monitor TV, and also to the analog VTR connected thereto through input means and output means. ,
It is characterized in that recording and reproduction can be performed similarly to a digital VTR.

As described above, the editing of audio and video from the digital VTR can be performed at lower cost and more efficiently than in the past, and the editing can be speeded up.

[0017] Further, between the digital VTR connected to the memory disk device and the analog VTR most widely used in the market at present, the memory disk device uses the IEEE.
Audio and video edited on the basis of the audio and video digital stream signals from the digital VTR transmitted through the E1394 bus can be recorded on the analog VTR as analog signals, and conversely, audio and video from the analog VTR can be recorded. Audio and video edited based on the analog video signal can be recorded as digital signals on a digital VTR.

Further, a digital V is previously stored in a memory disk.
If the audio and video digital stream signals from the TR are recorded, then, with the digital VTR disconnected, for example, at another location, only the editing machine mainly composed of a memory disk device and the monitor TV are connected. As such, they can be edited on their own based on the audio and video digital stream signals in the memory disk, and the edited audio and video can be combined with the digital VTR or the digital VTR connected to the editor at any time. Can be recorded on another analog VTR at any time.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An audio-video editing system according to claim 1 of the present invention comprises a digital VTR for digitally recording and reproducing audio and video on a recording medium, and a recording medium different from the recording medium. A memory disk device having a memory disk, wherein the digital VTR and the memory disk device are connected by one stream bus standardized as a bus for audio and video digital stream signals, An audio / video editing system for digitally editing audio and video input from the digital VTR to the memory disk device through the stream bus using the memory disk, wherein the digital VTR includes the audio and video DVC output from the digital VTR as a digital stream signal for video The AV / subcode digital stream signal comprising a subcode digital stream signal including the condensation is audio digital stream signal and a video digital stream signal and the time code, and a command for controlling the digital VTR digital VT
A bus interface capable of inputting / outputting all data corresponding to a control signal including an R status signal to / from the stream bus in a predetermined manner, and a bus interface circuit for inputting / outputting the data by the bus interface Wherein the memory disk device is directly connected to the stream bus,
A bus interface means for inputting and outputting all data corresponding to the AV / subcode digital stream signal and the control signal to the stream bus in accordance with the predetermined method; All data corresponding to the subcode digital stream signal and the control signal, a disk interface means capable of recording and reproducing on the memory disk in video signal frame units,
An interface control means for operating and controlling the bus interface means and the disk interface means by the control signal, an input means for inputting an analog signal for audio and video from outside, and controlled by the interface control means,
An AV / subcode digital stream signal generating means for generating the AV / subcode digital stream signal based on audio and video analog signals from the input means; and the memory disk controlled by the interface control means. From the AV /
An analog video signal generating means for generating audio and video analog signals by the sub-code digital stream signal; an output means for outputting audio and video analog signals from the analog video signal generating means; An analog audio input unit for inputting only an analog audio signal as audio information, an A / D converter for converting an analog audio signal from the analog audio input unit into a digital audio signal, and an A / D converter. An encoder for DV-compressing the digital audio signal into a PCM audio signal, and recording means for recording the PCM audio signal obtained by the encoder on the memory disk through the disk interface means; The digital VTR and the memory Device to control the operation of, all or part of the AV / subcode digital stream signal from the digital VTR, is recorded in the memory disk via the stream bus and the bus interface means and the disk interface means,
Thereafter, the memory disk is reproduced, the AV / subcode digital stream signal is converted into an analog video signal through the disk interface means and the analog video signal generation means, and the analog video signal is transmitted from the output means to the monitor TV. In addition, while monitoring the reproduced image by the monitor TV, a program of a cut-in point which is an edit start point and a cut-out point which is an edit end point is determined, and the interface control means controls the memory according to the program. The audio / video analog signal based on the edited AV / subcode digital stream signal is edited while reproducing the AV / subcode digital stream signal from the disc, and the analog VTR connected through the output terminal. Recordable and then, and then the edited AV / subcode digital stream signal also allows to record the digital VTR through the stream bus and said bus interface means, further
After re-editing only the audio digital stream signal in the AV / sub-code digital stream signal recorded on the memory disk after the editing of the AV / sub-code digital stream signal, the memory disk device uses The analog audio signal input from the analog audio input means is converted into the PCM audio signal by the A / D converter, encoder and recording means, and is recorded on the memory disk as the audio digital stream signal through the disk interface means. The interface control means reproduces the AV / subcode digital stream signal recorded on the memory disk, and reproduces the data through the disk interface means, the bus interface means, and the stream bus. To the digital VTR, and monitor the audio digital stream signal in the AV / subcode digital stream signal, while controlling the AV / subcode digital stream signal recorded on the memory disk at the timing controlled by the interface control means. A part of the audio digital stream signal is replaced with an audio digital stream signal converted based on the analog audio signal from the analog audio input means.

According to a second aspect of the present invention, there is provided an audio / video editing system comprising: a digital VTR for digitally recording and reproducing audio and video on a recording medium; and a memory disk which is a recording medium different from the recording medium. Wherein the digital VTR and the memory disk device are connected by one stream bus standardized as a bus for digital stream signals for audio and video, and the stream bus An audio and video editing system for digitally editing audio and video input from the digital VTR to the memory disk device using the memory disk through the digital VTR, wherein the digital VTR is DVC-compressed output from the digital VTR as a stream signal An AV / subcode digital stream signal including an audio digital stream signal, a video digital stream signal, and a subcode digital stream signal including a time code, and a control signal including a command for controlling the digital VTR and a status signal of the digital VTR. A bus interface capable of inputting / outputting all data corresponding to the data stream to / from the stream bus in a predetermined manner, and a bus interface circuit for inputting / outputting the data by the bus interface. Is directly connected to the stream bus, and transmits all data corresponding to the AV / subcode digital stream signal and the control signal to the stream bus according to the predetermined method. A bus interface unit capable of inputting and outputting data, and all data corresponding to an AV / subcode digital stream signal and a control signal from the bus interface unit can be recorded and reproduced on the memory disk in frame units of video signals. A disk interface unit, an interface control unit for operating and controlling the bus interface unit and the disk interface unit by the control signal, an input unit for inputting analog signals for audio and video from outside, and controlled by the interface control unit. Based on the audio and video analog signals from the input means,
An AV / sub-code digital stream signal generating means for generating the AV / sub-code digital stream signal, controlled by the interface control means,
Analog video signal generating means for generating audio and video analog signals based on the AV / subcode digital stream signal reproduced from the memory disk;
Output means for outputting analog signals for audio and video from the analog video signal generation means, analog audio input means for inputting only analog audio signals that are audio information in the form of analog signals, and the analog audio input means A / D converter for converting an analog audio signal from the A / D converter into a digital audio signal, an encoder for DV-compressing the digital audio signal from the A / D converter into a PCM audio signal, and a PCM obtained from the encoder Recording means for recording an audio signal on the memory disk through the disk interface means, wherein the interface control means controls and operates the digital VTR and the memory disk device, and outputs an AV / subcode digital signal from the digital VTR. All or one of the stream signals And recorded in the memory disk via the stream bus and the bus interface means and the disk interface means, then,
The memory disk is reproduced, the AV / subcode digital stream signal is converted to an analog video signal through the disk interface means and the analog video signal generation means, and the analog video signal is applied to the monitor TV from the output means. While monitoring the image reproduced by the monitor TV, a program for a cut-in point which is a start point of editing and a cut-out point which is an end point of editing is determined, and the interface control means reads the program from the memory disk according to the program. The AV
And edit while reproducing the / subcode digital stream signal, and record the analog signal for audio and video based on the edited AV / subcode digital stream signal on an analog VTR connected through the output terminal. And the edited AV / subcode digital stream signal can be recorded on the digital VTR through the bus interface means and the stream bus.
When editing only the audio digital stream signal in the AV / subcode digital stream signal recorded on the memory disk after editing the / subcode digital stream signal, And reproduces the AV / subcode digital stream signal recorded on the digital VTR through the disk interface means, the bus interface means and the stream bus, and monitors the audio digital stream signal in the AV / subcode digital stream signal. Meanwhile, at the timing controlled by the interface control means, a part of the audio digital stream signal in the AV / subcode digital stream signal recorded on the memory disk is A structure to replace the audio digital stream signal converted based on the analog audio signal from the analog audio input means.

According to a third aspect of the present invention, there is provided an audio / video editing system, comprising: a digital VTR for digitally recording and reproducing audio and video on a recording medium; and a memory having a memory disk which is a recording medium different from the recording medium. A disk device, wherein the digital VTR and the memory disk device are connected by one stream bus standardized as a bus for audio and video digital stream signals, and the digital VTR is connected to the digital VTR through the stream bus. An audio-video editing system for digitally editing audio and video input from a VTR to a memory disk device using the memory disk, wherein the digital VTR is used as a digital stream signal for the audio and video. , DV output from the digital VTR
An AV / subcode digital stream signal composed of a C-compressed audio digital stream signal, a video digital stream signal, and a subcode digital stream signal including a time code, a command for controlling the digital VTR, and a status signal of the digital VTR; All data corresponding to the control signal consisting of, a bus interface capable of inputting and outputting to the stream bus in a predetermined manner, and a bus interface circuit for inputting and outputting the data by the bus interface, The memory disk device,
A bus interface means directly connected to the stream bus and capable of inputting and outputting all data corresponding to the AV / subcode digital stream signal and the control signal to the stream bus according to the predetermined method; A disk interface unit capable of recording and reproducing all data corresponding to an AV / subcode digital stream signal and a control signal from the bus interface unit on the memory disk in video signal frame units; Interface control means for operating and controlling the disk interface means by the control signal, input means for inputting external analog signals for audio and video, and the interface control means More it is controlled, based on the analog signal for the audio and video from the input means, the A
AV for generating V / subcode digital stream signal
Analog video signal generation means for generating analog audio and video signals from the AV / subcode digital stream signal reproduced from the memory disk, controlled by the / subcode digital stream signal generation means and the interface control means. Means for outputting analog signals for audio and video from the analog video signal generating means, analog audio input means for inputting only analog audio signals that are audio information in the form of analog signals, A / D for converting an analog audio signal from an audio input means into a digital audio signal
A converter, an encoder for DV-compressing the digital audio signal from the A / D converter and converting the digital audio signal into a PCM audio signal;
Recording means for recording the PCM audio signal obtained from the encoder on the memory disk through the disk interface means, and controlling the digital VTR and the memory disk device by the interface control means, The AV / subcode digital stream signal obtained from the code digital stream signal generating means is recorded on the memory disk through the disk interface means, and thereafter, the memory disk is reproduced, and the AV / subcode digital stream signal is reproduced.
The sub-code digital stream signal is converted into an analog video signal through the disk interface means and the analog video signal generation means, and the analog video signal is applied from the output means to a monitor TV, and a reproduced image by the monitor TV is monitored. Meanwhile, a program of a cut-in point as an editing start point and a cut-out point as an editing end point is determined, and the AV / subcode digital stream signal is reproduced from the memory disk according to the program by the interface control means. While editing, the analog signal for audio and video based on the edited AV / subcode digital stream signal can be recorded on an analog VTR connected through the output terminal, and the edited AV / subcode Sabiko The digital VTR can also be recorded on the digital VTR through the bus interface means and the stream bus, and after editing the AV / subcode digital stream signal, the AV / When re-editing only the audio digital stream signal in the sub-code digital stream signal, the memory disk device converts the analog audio signal input from the analog audio input means into the A / D converter, the encoder, The PCM audio signal is converted into a PCM audio signal by a recording means, and is recorded as an audio digital stream signal on the memory disk through the disk interface means, and the AV / SA recorded on the memory disk by the interface control means. Play the code digital stream signal, sent to the digital VTR via the disk interface means and the bus interface means and the stream bus, the AV
While monitoring the audio digital stream signal in the / digital sub-code digital stream signal, one of the audio digital stream signals in the AV / sub-code digital stream signal recorded on the memory disk is controlled at the timing controlled by the interface control means. The section is replaced with an audio digital stream signal converted based on an analog audio signal from the analog audio input means.

According to a fourth aspect of the present invention, there is provided an audio / video editing system comprising: a digital VTR for digitally recording and reproducing audio and video on and from a recording medium; A disk device, wherein the digital VTR and the memory disk device are connected by one stream bus standardized as a bus for audio and video digital stream signals, and the digital VTR is connected to the digital VTR through the stream bus. An audio-video editing system for digitally editing audio and video input from a VTR to a memory disk device using the memory disk, wherein the digital VTR is used as a digital stream signal for the audio and video. , DV output from the digital VTR
An AV / subcode digital stream signal composed of a C-compressed audio digital stream signal, a video digital stream signal, and a subcode digital stream signal including a time code, a command for controlling the digital VTR, and a status signal of the digital VTR; All data corresponding to the control signal consisting of, a bus interface capable of inputting and outputting to the stream bus in a predetermined manner, and a bus interface circuit for inputting and outputting the data by the bus interface, The memory disk device,
A bus interface means directly connected to the stream bus and capable of inputting and outputting all data corresponding to the AV / subcode digital stream signal and the control signal to the stream bus according to the predetermined method; A disk interface unit capable of recording and reproducing all data corresponding to an AV / subcode digital stream signal and a control signal from the bus interface unit on the memory disk in video signal frame units; Interface control means for operating and controlling the disk interface means by the control signal, input means for inputting external analog signals for audio and video, and the interface control means More it is controlled, based on the analog signal for the audio and video from the input means, the A
AV for generating V / subcode digital stream signal
Analog video signal generation means for generating analog audio and video signals from the AV / subcode digital stream signal reproduced from the memory disk, controlled by the / subcode digital stream signal generation means and the interface control means. Means for outputting analog signals for audio and video from the analog video signal generating means, analog audio input means for inputting only analog audio signals that are audio information in the form of analog signals, A / D for converting an analog audio signal from an audio input means into a digital audio signal
A converter, an encoder for DV-compressing the digital audio signal from the A / D converter and converting the digital audio signal into a PCM audio signal;
Recording means for recording the PCM audio signal obtained from the encoder on the memory disk through the disk interface means, and controlling the digital VTR and the memory disk device by the interface control means, The AV / subcode digital stream signal obtained from the code digital stream signal generating means is recorded on the memory disk through the disk interface means, and thereafter, the memory disk is reproduced, and the AV / subcode digital stream signal is reproduced.
The sub-code digital stream signal is converted into an analog video signal through the disk interface means and the analog video signal generation means, and the analog video signal is applied from the output means to a monitor TV, and a reproduced image by the monitor TV is monitored. Meanwhile, a program of a cut-in point as an editing start point and a cut-out point as an editing end point is determined, and the AV / subcode digital stream signal is reproduced from the memory disk according to the program by the interface control means. While editing, the analog signal for audio and video based on the edited AV / subcode digital stream signal can be recorded on an analog VTR connected through the output terminal, and the edited AV / subcode Sabiko The digital VTR can also be recorded on the digital VTR through the bus interface means and the stream bus, and after editing the AV / subcode digital stream signal, the AV / When re-editing only the audio digital stream signal in the sub-code digital stream signal, the interface control means reproduces the AV / sub-code digital stream signal recorded on the memory disk,
The digital interface is sent to the digital VTR through the disk interface unit, the bus interface unit, and the stream bus, and while monitoring the audio digital stream signal in the AV / subcode digital stream signal, the timing is controlled by the interface control unit. A part of the audio digital stream signal in the AV / subcode digital stream signal recorded on the memory disk is replaced with an audio digital stream signal converted based on the analog audio signal from the analog audio input means.

According to a fifth aspect of the present invention, there is provided an audio / video editing system comprising: a digital VTR for digitally recording and reproducing audio and video on a recording medium; and a memory having a memory disk which is a recording medium different from the recording medium. A disk device, wherein the digital VTR and the memory disk device are connected by one stream bus standardized as a bus for audio and video digital stream signals, and the digital VTR is connected to the digital VTR through the stream bus. An audio-video editing system for digitally editing audio and video input from a VTR to a memory disk device using the memory disk, wherein the digital VTR is used as a digital stream signal for the audio and video. , DV output from the digital VTR
An AV / subcode digital stream signal composed of a C-compressed audio digital stream signal, a video digital stream signal, and a subcode digital stream signal including a time code, a command for controlling the digital VTR, and a status signal of the digital VTR; All data corresponding to the control signal consisting of, a bus interface capable of inputting and outputting to the stream bus in a predetermined manner, and a bus interface circuit for inputting and outputting the data by the bus interface, The memory disk device,
A bus interface means directly connected to the stream bus and capable of inputting and outputting all data corresponding to the AV / subcode digital stream signal and the control signal to the stream bus according to the predetermined method; A disk interface unit capable of recording and reproducing all data corresponding to an AV / subcode digital stream signal and a control signal from the bus interface unit on the memory disk in video signal frame units; Interface control means for operating and controlling the disk interface means by the control signal, input means for inputting external analog signals for audio and video, and the interface control means More it is controlled, based on the analog signal for the audio and video from the input means, the A
AV for generating V / subcode digital stream signal
Analog video signal generation means for generating analog audio and video signals from the AV / subcode digital stream signal reproduced from the memory disk, controlled by the / subcode digital stream signal generation means and the interface control means. Means for outputting analog signals for audio and video from the analog video signal generating means, analog audio input means for inputting only analog audio signals that are audio information in the form of analog signals, A / D for converting an analog audio signal from an audio input means into a digital audio signal
A converter, an encoder for DV-compressing the digital audio signal from the A / D converter and converting the digital audio signal into a PCM audio signal;
Recording means for recording a PCM audio signal obtained from the encoder on the memory disk through the disk interface means, wherein the interface control means controls and operates the digital VTR and the memory disk device, and AV / subcode, wherein all or a part of the AV / subcode digital stream signal is recorded on the memory disk through the stream bus and the bus interface means and the disk interface means, and the analog signal from the input means is converted. Recording a digital stream signal on the memory disk through the disk interface means,
The memory disk is reproduced, the AV / subcode digital stream signal is converted to an analog video signal through the disk interface means and the analog video signal generation means, and the analog video signal is applied to the monitor TV from the output means. While monitoring the image reproduced by the monitor TV, a program for a cut-in point which is a start point of editing and a cut-out point which is an end point of editing is determined, and the interface control means reads the program from the memory disk according to the program. The AV
And edit while reproducing the / subcode digital stream signal, and record the analog signal for audio and video based on the edited AV / subcode digital stream signal on an analog VTR connected through the output terminal. And the edited AV / subcode digital stream signal can be recorded on the digital VTR through the bus interface means and the stream bus.
When editing only the audio digital stream signal in the AV / subcode digital stream signal recorded on the memory disk after editing the / subcode digital stream signal, the memory disk device uses the analog audio An analog audio signal input from an input means is converted into the PCM audio signal by the A / D converter, encoder and recording means, and is recorded as an audio digital stream signal on the memory disk through the disk interface means, and The interface control means reproduces an AV / sub-code digital stream signal recorded on the memory disk, and reproduces the digital V signal through the disk interface means, bus interface means and stream bus. R, while monitoring the audio digital stream signal in the AV / subcode digital stream signal, and at the timing controlled by the interface control means, in the AV / subcode digital stream signal recorded on the memory disk. A part of the audio digital stream signal is replaced with an audio digital stream signal converted based on the analog audio signal from the analog audio input means. The audio-video editing system according to claim 6, wherein a digital VTR that digitally records and reproduces audio and video on and from a recording medium, and a memory disk device that has a memory disk that is a recording medium different from the recording medium. The digital VTR and the memory disk device,
The digital VTR is connected by one stream bus standardized as a bus for audio and video digital stream signals, and is connected through the stream bus.
An audio-video editing system for digitally editing audio and video input from a memory disk device using the memory disk.
TR is, as the audio and video digital stream signal, an AV / sub composed of a DVC-compressed audio digital stream signal output from the digital VTR, a video digital stream signal, and a subcode digital stream signal including a time code. A code digital stream signal, and a bus interface capable of inputting / outputting all data corresponding to a control signal including a command for controlling the digital VTR and a status signal of the digital VTR to / from the stream bus in a predetermined manner. A bus interface circuit for inputting and outputting the data by the bus interface, wherein the memory disk device is directly connected to the stream bus, and All data corresponding to the V / subcode digital stream signal and the control signal are converted into bus interface means capable of inputting / outputting in accordance with the predetermined method, and AV / subcode digital stream signal and control signal from the bus interface means. A disk interface unit capable of recording and reproducing all corresponding data to and from the memory disk in frame units of a video signal; an interface control unit for operating and controlling the bus interface unit and the disk interface unit by the control signal; Input means for inputting audio and video analog signals from the input means, and controlled by the interface control means, based on the audio and video analog signals from the input means. Stomach, the AV
/ AV generating sub-code digital stream signal /
Sub-code digital stream signal generating means, and analog video signal generating means controlled by the interface control means to generate audio and video analog signals from the AV / sub-code digital stream signal reproduced from the memory disk Output means for outputting analog signals for audio and video from the analog video signal generation means, analog audio input means for inputting only analog audio signals that are audio information in the form of analog signals, and the analog audio An A / D converter for converting an analog audio signal from the input means into a digital audio signal, and a digital audio signal from the A / D converter
An encoder for V-compressing and converting to a PCM audio signal; and a recording unit for recording the PCM audio signal obtained from the encoder on the memory disk through the disk interface unit. By controlling and operating the memory disk device, all or a part of the AV / subcode digital stream signal from the digital VTR is recorded on the memory disk through the stream bus and the bus interface means and the disk interface means. An AV / sub-code digital stream signal obtained by converting an analog signal from an input means is recorded on the memory disk through the disk interface means, and thereafter, the Playback, converting the AV / subcode digital stream signal into an analog video signal through the disk interface means and the analog video signal generating means, and applying the analog video signal from the output means to a monitor TV, While monitoring the image reproduced by the TV, a program for a cut-in point as an edit start point and a cut-out point as an edit end point is determined.
While editing while reproducing the sub-code digital stream signal, the audio and video analog signals based on the edited AV / sub-code digital stream signal can be recorded on an analog VTR connected through the output terminal, And recording the edited AV / subcode digital stream signal on the digital VTR through the bus interface means and the stream bus.
After editing the sub-code digital stream signal, when re-editing only the audio digital stream signal in the AV / sub-code digital stream signal recorded on the memory disk, The recorded AV / subcode digital stream signal is reproduced and sent to the digital VTR through the disk interface means, the bus interface means and the stream bus, and the audio digital stream signal in the AV / subcode digital stream signal is monitored. Meanwhile, at the timing controlled by the interface control means, a part of the audio digital stream signal in the AV / subcode digital stream signal recorded on the memory disk is Serial and configured to replace the converted voice digital stream signal based on the analog audio signal from the analog sound input means.

According to a seventh aspect of the present invention, there is provided an audio-video editing system which edits audio and video input to the memory disk device according to any one of the first to sixth aspects.
The memory disk device is controlled by an interface control unit to detect and extract a time code corresponding to a cut-in point and a cut-out point of editing from a subcode digital stream signal, and the time code detection unit And a display for displaying the contents of the time code memory means, and controls the display to cut the time code into the display. Display control means for displaying in accordance with the number of programs consisting of points and cut-out points, and editing while monitoring an edit list displayed on the display in accordance with a reproduced image of the monitor TV and a program for editing the same. Is performed.

In the audio and video editing system according to the present invention, when the audio and video input to the memory disk device according to the seventh aspect are edited, the memory disk device operates the time code in the time code memory means. A character image generating means for converting the character information of the cut-in point and cut-out point of the code-based editing and each program number to a character display video signal to generate a character video signal, and an analog signal from the analog video signal generating means. Superimposing means for generating an analog video signal by superimposing a character video signal from the character video generating means on a video signal; first output means for outputting an analog video signal from the superimposing means; Second output means for outputting an analog video signal from the video signal generation means, wherein the first output means Adding an analog video signal al to the monitor TV, a configuration to perform editing while monitoring the edit list corresponding to the reproduced image and the editing program.

In the audio and video editing system according to the ninth aspect, when the audio and video input to the memory disk apparatus according to the eighth aspect are edited, the memory disk apparatus is controlled by display control means. A small-screen creating means for thinning out an analog video signal from an analog video signal generating means to create a still-image small-screen signal in correspondence with an edit cut-in point and cut-out point and each program number; A small-screen creation memory unit for temporarily storing a still-image small-screen signal from the small-screen creation unit, and a still-image small-screen signal from the small-screen creation unit and the analog video signal generation unit controlled by the display control unit. Mixing means for outputting a video signal of a picture-in-picture screen created by mixing the analog video signal to the first output means. Adding a video signal of a picture-in-picture screen from the mixing means to the monitor TV through the first output means, and performing editing while monitoring the reproduced image and the editing small screen corresponding to the editing program. I do.

According to a tenth aspect of the present invention, there is provided an audio-video editing system which edits audio and video input to the memory disk device according to any one of the first to ninth aspects.
The memory disk device has light receiving means for receiving light emission for an operation command from an external remote controller as a signal for operation and control by the interface control means. The remote controller is remotely controlled by the remote controller through a display controller based on a light receiving signal corresponding to the operation command, so that the interface controller executes the operation and control based on an operation command from the remote controller.

In the audio and video editing system according to the eleventh aspect, when editing the audio and video input to the memory disk unit according to any one of the first to tenth aspects, the memory disk unit may: The bus interface means is connected to one end of another stream bus provided in addition to the stream bus to the digital VTR, and the stream bus is also connected to the AV / subcode digital stream signal and control. The data corresponding to the signal is configured to be input / output according to a predetermined method, and is connected to the other end of the another stream bus.
Data corresponding to the sub-code digital stream signal and the control signal is controlled and edited by a personal computer having an interface capable of inputting and outputting data in accordance with the predetermined method.

According to the above configuration, when audio and video from a digital VTR or an analog VTR, which is an information source, are edited using a memory disk, the memory disk is stored in the memory disk device having the memory disk. By directly interfacing with a stream bus standardized for audio and video, a recording area for audio and video digital stream signals on a memory disk is set so that the recording positions of these digital stream signals are continuous. In addition, only the digital stream signal is recorded in the area, the continuity of data at the time of recording and reproduction with respect to the digital stream signal is maintained, and it is possible to edit the digital signal as a stream signal in a digital signal state. Controlled by interface control means The AV / sub-code digital stream signal generation means generates an AV / sub-code digital stream signal and a control signal based on an analog audio and video signal input from the outside through an input means. Recorded in
Conversely, controlled by the interface control means, the analog video signal generation means generates an analog signal for audio and video based on the AV / subcode digital stream signal reproduced from the memory disk, and outputs it from the output means. The analog video signal is also added to the monitor TV and other analog VTRs, edited while monitoring the reproduced image by the monitor TV, and the analog VT connected to them through input means and output means.
R can be recorded and reproduced in the same manner as a digital VTR. Further, after editing the AV / subcode digital stream signal, the interface control means in the memory disk device records the data on the memory disk. Interface control means for reproducing an AV / subcode digital stream signal, sending it to a digital VTR through a disk interface means, a bus interface means and a stream bus, and monitoring an audio digital stream signal in the AV / subcode digital stream signal; A part of the audio digital stream signal recorded on the memory disk is converted into an A / D converter and an encoder by the timing controlled by the A / D converter and the encoder based on the analog audio signal from the analog audio input means. It makes it possible to replace the audio digital stream signal converted by the recording means.

According to a twelfth aspect of the present invention, there is provided an audio-video editing system, wherein the stream bus according to any one of the first to eleventh aspects is an IEEE defined by the IEEE.
The configuration uses an EE1394 bus.

According to the above configuration, when audio and video from a digital VTR or an analog VTR, which is an information source, are edited using a memory disk, the memory disk is provided in the memory disk device having the memory disk. By directly interfacing with the digital stream bus for audio and video standardized by IEEE 1394, a recording area for audio and video digital stream signals on a memory disk is provided so that the recording positions of these digital stream signals are continuous. Set, record only the digital stream signal in the area, maintain the continuity of data at the time of recording and reproduction with respect to the digital stream signal, and enable editing as a stream signal in the digital signal state Together with the interface It is controlled by the scan control means, AV
/ Subcode digital stream signal generation means,
An AV / subcode digital stream signal and a control signal are generated and recorded on a memory disk based on an analog signal for audio and video input from the outside through an input means, and conversely, controlled by an interface control means. The analog video signal generating means generates an analog signal for audio and video based on the AV / subcode digital stream signal reproduced from the memory disk, and outputs the analog signal from the output means. In addition to the analog VTR, the digital VT is edited while monitoring the reproduced image by the monitor TV, and the analog VTR connected to the analog VTR through the input means and the output means.
R, and after editing the AV / subcode digital stream signal, in the memory disk device, the interface control means controls the AV / subcode digital stream signal recorded on the memory disk. And a disk interface means and a bus interface means and I
A part of the audio digital stream signal recorded on the memory disk at the timing controlled by the interface control means while monitoring the audio digital stream signal in the AV / subcode digital stream signal by sending it to the digital VTR through the IEEE 1394 bus. Can be replaced with an audio digital stream signal converted by an A / D converter, an encoder, and a recording unit based on an analog audio signal from an analog audio input unit.

Hereinafter, an audio-video editing system according to an embodiment of the present invention will be specifically described with reference to the drawings. (Embodiment 1) An audio-video editing system according to Embodiment 1 of the present invention will be described. Note that components having the same functions as those of the conventional audio / video editing system shown in FIG. 4 are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 1 is a block diagram showing the configuration of the audio-video editing system according to the first embodiment. The audio-video editing system has a basic configuration in which a digital VTR 500 that digitally records and reproduces audio and video as a recording medium on a digital video cassette (DVC) in the form of a magnetic tape, and a recording medium of the digital VTR 500 A hard disk drive H1 is provided as a memory disk drive having a hard disk (HDD) 100, which is one of the disk-shaped memory disks, which is another medium form. The digital VTR 500 and the hard disk drive H1 are used for audio and video. As a stream bus for a digital stream signal for use with a single IEEE 1394 bus B1 standardized by IEEE, a digital V signal is transmitted through the IEEE 1394 bus B1.
The audio and video input from the TR 500 to the hard disk drive H1 are digitally edited using the hard disk 100.

In FIG. 1, a digital VTR 500 is
An AV / subcode digital stream signal including a DVC-compressed audio digital stream signal, a video digital stream signal, and a subcode digital stream signal including a time code, output from the digital VTR 500, as audio and video digital stream signals; A bus interface (DV terminal) capable of inputting / outputting all data corresponding to a control signal consisting of a command for controlling the digital VTR 500 and a status signal of the digital VTR 500 to / from the IEEE 1394 bus B1 in a predetermined manner; And a bus interface circuit (not shown) for inputting and outputting the above data.

On the other hand, the hard disk drive H1 is directly connected to the above-mentioned IEEE 1394 bus B1, and
All data corresponding to the AV / subcode digital stream signal and the control signal can be input / output to / from the E1394 bus B1 in the same manner as described above, and a digital stream signal for audio and video is provided. A bus interface means 103 comprising a link (LINK) 101 as a data link layer of an upper protocol and a file (PHY) 102 as a physical layer of a lower protocol, and an AV / subcode digital stream signal from the bus interface means 103 And a memory controller (MC) 10 for enabling all data corresponding to the control signal to be recorded on and reproduced from the hard disk 100 in units of video signal frames by mediating with the hard disk 100.
5, a memory (Mem) 106 used for recording and reproduction with respect to the hard disk 100, and an interface (ID) for receiving and transmitting signals between the memory controller 105 and the hard disk 100.
E) Disk interface means 1 comprising 104
07 and a microcomputer (μCOM) that controls (controls) the bus interface unit 103 and the disk interface unit 107 by the control signal.
08, an input means 200 to which an external audio and video analog signal can be input, and an audio and video analog signal from the input means 200 are digitally converted by an A / D converter (A / D) 114. After converting to a signal,
By the encoder (ENCODE) 115 controlled by the interface control means 108, the above AV /
An AV / subcode digital stream signal generating means 116 for generating a subcode digital stream signal, and an AV / subcode digital stream signal reproduced from the hard disk 100 under the control of the interface control means 108, are supplied to a decoder (DECODE) 1
17, after decoding by D / A converter (D / A)
An analog video signal generating means 119 for generating an analog signal for audio and video by 118; an output means 204 for outputting an analog signal for audio and video from the analog video signal generating means 119; Analog audio input means 121 for inputting only analog audio signals as information, an A / D converter (A / D) 122 for converting analog audio signals from the analog audio input means 121 into digital audio signals, DV compression of the digital audio signal from the / D converter 122
An encoder (ENC) 123 for converting into an M audio signal;
Recording means 124 for recording the PCM audio signal obtained from the encoder 123 on the hard disk 100 through the disk interface means 107;

The hard disk drive H1 detects time codes corresponding to the cut-in and cut-out points of editing from the sub-code digital stream signal in a microcomputer (μCOM) 109 controlled by the interface control means 108. It has a time code detecting means 110 to be taken out, and a time code memory means 111 for storing the time code from the time code detecting means 110. A display (LCD) 112 for displaying the contents of the time code memory means 111 is provided. The microcomputer 109 is connected to the microcomputer 109, and controls the display 112 to display the time code on the display 112 in accordance with the number of programs including the cut-in point and the cut-out point. Use as display control means 109 To have.

The hard disk drive H1 emits light (for example, infrared light) L for an operation command from a remote controller R1 externally operated by a key or the like as a signal for operation and control by the interface control means 108.
It has an IR light receiver 113 which is a light receiving means for receiving 1.

The operation of the audio / video editing system configured as described above will be described below. First, the digital VTR 50 is
0 and the hard disk drive H1 to control all or part of the AV / subcode digital stream signal from the digital VTR 500 to the IEEE1
394 bus B1 and bus interface means 103
Then, the data is recorded on the hard disk 100 through the disk interface means 107.

Thereafter, the interface control means 108
Reproduces the hard disk 100 through the disk interface means 107, converts the AV / subcode digital stream signal into an analog video signal A110 by the disk interface means 107 and the analog video signal generation means 119, and converts the analog video signal A110 The output is supplied to the monitor TV 504 from the output unit 204 through the connection cable K11.

Next, while monitoring the reproduced image, a program for a cut-in point, which is a starting point of editing, and a cut-out point, which is an ending point of editing, are determined. , While reproducing the AV / subcode digital stream signal from the computer, at this time, an edit list L10 corresponding to the editing program is displayed on the display 112, and the reproduced image of the monitor TV 504 and the display 1 are displayed.
Editing is performed while monitoring the twelve edit lists L10.

On the other hand, after being edited as described above,
The edited AV /
Based on the data corresponding to the sub-code digital stream signal and the control signal, the analog video signal generating means 119 controls the analog signal A110 for audio and video under the control of the interface control means 108.
Is output from the output means 204 and added to the monitor TV 504 as described above.
In addition to the other analog VTR 120 connected through the connection cable K11, the recording can be performed on the analog VTR 120. In addition, recording and reproduction can be performed on the analog VTR 120 connected thereto through the input unit 200 and the output unit 204, similarly to the digital VTR 500.

In this embodiment, the audio and video information sources for editing using the hard disk 100 are a digital VTR 500 connected to the hard disk device H1 via the IEEE1394 bus B1, or an input means 200 and an output means. Both the audio and video from the analog VTR 120 connected through the digital VTR 50 can be used.
0 and the analog VTR 120 can record / reproduce.

On the other hand, apart from the above-mentioned editing, after the editing of the AV / subcode digital stream signal, only the audio digital stream signal in the AV / subcode digital stream signal recorded on the hard disk 100 is reedited. In doing so, the hard disk device H1
The A / D converter 122 and the encoder 123
The recording means 124 converts the AV / subcode digital stream signal recorded on the hard disk 100 into a PCM audio signal which is converted into a PCM audio signal as an audio digital stream signal through the disk interface means 107 and recorded on the hard disk 100 by the interface control means 108. The digital VTR is reproduced through the disk interface means 107, the bus interface means 103 and the IEEE 1394 bus B1.
500, and monitors the audio digital stream signal in the AV / subcode digital stream signal, while monitoring the audio / digital stream signal in the AV / subcode digital stream signal recorded on the hard disk 100 at a predetermined timing controlled by the interface control means 108. Can be replaced with an audio digital stream signal converted based on the analog audio signal from the analog audio input means 121.

The interface control means 108
Is remotely controlled by an external remote controller R1 based on a light reception signal corresponding to an operation command from the IR light receiver 113, whereby the interface control means 108 controls the display 112 through the display control means 109, The above-mentioned operation and control are executed based on the operation command from the computer.

In the hard disk drive H1, the bus interface means 103 is connected to the digital VTR 500 in addition to the IEEE 1394 bus B1 and to the personal computer P11 by another IEEE 1394 bus B1.
Connected to one end of the 1394 bus B3, and
The data corresponding to the AV / subcode digital stream signal and the control signal can also be input / output to / from the 94 bus B3 in the same manner as described above.

The personal computer P11 connected to the other end of the IEEE 1394 bus B3 also has the I
An interface (not shown) capable of inputting / outputting data corresponding to the AV / subcode digital stream signal and the control signal to / from the EEE1394 bus B3 by the above-described method is provided.

The hard disk drive H1 can be controlled by the personal computer P11 to perform editing. (Embodiment 2) An audio-video editing system according to Embodiment 2 of the present invention will be described. The configuration and operation for re-editing only the audio digital stream signal in the AV / sub-code digital stream signal recorded on the hard disk 100 after the editing of the AV / sub-code digital stream signal will be described. Since it is the same as the first embodiment, the description is omitted here. Also, here, for the same components as those in the above-described embodiment,
The detailed description is omitted.

FIG. 2 is a block diagram showing the configuration of the audio-video editing system according to the second embodiment. In FIG. 2, the hard disk drive H1 includes a time code memory
A character image generating means 201 for converting the character information of the edit cut-in point and cut-out point based on the time code in 1 and each program number into a character display video signal to generate a character video signal M20; Superimposing means 202 for generating an analog video signal A210 by superimposing the character video signal M20 from the character video generating means 201 on the analog video signal from the signal generating means 119, and an analog video signal from the superimposing means 202. First output means 20 for outputting A210
3 and a second output unit 204 that outputs the analog video signal A212 from the analog video signal generation unit 119.

The operation of the audio / video editing system configured as described above will be described below. In this audiovisual editing system, the hard disk drive H1 is controlled by the interface control means 108, and the hard disk drive H1 is controlled by the disk interface means 107.
The analog video signal generation unit 119 generates an analog video signal A212 from the data corresponding to the AV / subcode digital stream signal reproduced from 00, while the character video generation unit 201 generates the analog video signal A212.
9, based on the time code in the time code memory means 111 provided in the microcomputer, the edit cut-in point and cut-out point corresponding to the time code and the character information of each program number are converted into character display information. It converts to a video signal to generate a character video signal M20.

Next, the superimposing means (OSD) 202 applies the character image generating means 2 to the analog image signal A212 from the analog image signal generating means 119.
An analog video signal A210 is generated by superimposing the character video signal M20 from S.01, and the analog video signal A210 is output from the first output means 203 and added to the monitor TV 504 through the connection cable K23. Editing is performed while monitoring an edit list L11 corresponding to a reproduction image and an editing program superimposed on the image in the form of character information. (Embodiment 3) An audio-video editing system according to Embodiment 3 of the present invention will be described. The configuration and operation for re-editing only the audio digital stream signal in the AV / sub-code digital stream signal recorded on the hard disk 100 after the editing of the AV / sub-code digital stream signal will be described. Since it is the same as the first embodiment, the description is omitted here. Here, detailed description of the same components as those in the above-described embodiments will be omitted.

FIG. 3 is a block diagram showing the configuration of the audio-video editing system according to the third embodiment. In FIG. 3, the hard disk drive H1 includes an interface control unit 1
08, the analog video signal A312 reproduced from the hard disk 100 and generated by the analog video signal generation means 119 is controlled by the microcomputer which is the display control means 109 to correspond to the cut-in and cut-out points of editing and each program number. A small screen creating means 303 for creating a still image small screen signal by thinning out, a small screen creating memory means (Mem) 302 for temporarily storing the still image small screen signal from the small screen creating means 303, and display control. Means 109, controlled by means 109,
An analog video signal A310 of a picture-in-picture (PinP) screen created by mixing the still image small-screen signal from H.03 and the analog video signal A312 from the analog video signal generation means 119 is output to the first output means 203. Mixing means (MIX) 301.

The operation of the audio / video editing system configured as described above will be described below. In this audio / video editing system, the hard disk drive H1 is controlled by the interface control means 108 to convert the analog video signal from the data corresponding to the AV / subcode digital stream signal reproduced from the hard disk 100 by the disk interface means 107. The analog video signal A312 is generated by the generation unit 119.
On the other hand, based on the analog video signal A312 from the analog video signal generation means 119, the small-screen creation means 303 utilizes the small-screen creation memory means 302, and the edit cut-in point and cut-out point. In addition, the analog video signal A312 is thinned out in correspondence with each program number to create a still image small screen signal.

Next, under the control of the microcomputer which is the display control means 109, the mixing means 301 causes the still picture small screen signal from the small picture creation means 303 and the analog video signal A3 from the analog video signal generation means 119 to be output.
And an analog video signal A310 of a picture-in-picture screen created by mixing
In addition to the monitor TV 504 through the connection cable K33, the editing is performed while monitoring the reproduced image and the editing small screen G30 corresponding to the editing program.

In the third embodiment, the monitor T
The editing is performed while monitoring the playback image of the V504 and the editing small screen G30 mixed and synthesized on the image. However, as described in the second embodiment, the playback image of the monitoring TV 504 and the It is also possible to configure such that editing is performed by switching the editing method to be performed while monitoring the superimposed edit list L11 in the form of character information.

As described above, according to the configuration of each embodiment, the digital VTR 500 or the analog VTR 12
When audio and video from 0 are edited using the hard disk 100, the hard disk device H1 having the hard disk 100 is connected to a digital stream bus for audio and video standardized by the IEEE 1394 bus B1 with the hard disk 100. By directly interfacing, as a recording area for audio and video digital stream signals on the hard disk 100, the recording positions of these digital stream signals are set to be continuous, and only the digital stream signals are recorded in that area, Data continuity can be maintained during recording and reproduction with respect to a digital stream signal, and editing can be performed as a stream signal in a digital signal state.

Further, under the control of the interface control means 108, the audio / video signals inputted from the outside through the connection cables K 12, K 22 and K 32 via the input means 200 by the AV / sub-code digital stream signal generation means 116. Analog signals A111, A
211, A311 also generates an AV / subcode digital stream signal and a control signal and records them on the hard disk 100. Conversely, the digital video signal and the control signal are controlled by the interface control means 108 and the analog video signal generating means 119 generates A / A / A / B / A / C / A / A / A / B / A / A / A / A / A / A / A, A and B in accordance with the AV / subcode digital stream signal and the control signal reproduced from the CPU, generate output means (including the second output means) 204 or the first output means. 203, the analog video signals A110, A212, and A312 are added to the monitor TV 504 and another analog VTR 120, and the monitor TV
Edit while monitoring the reproduced image by 504, and
Through the input means 200 and the output means 204, the analog VTR 120 connected thereto can be recorded and reproduced similarly to the digital VTR 500.

As a result, the editing of the audio and video from the digital VTR 500 can be performed at lower cost and more efficiently than in the past, and the editing can be speeded up.

Also, between the digital VTR 500 connected to the hard disk drive H1 and the analog VTR 120 most widely used in the market at present, audio and video from the digital VTR 500 sent to the hard disk drive H1 via the IEEE1394 bus B1. Audio and video edited on the basis of the digital stream signal can be recorded on the analog VTR 120 as an analog signal.
The audio and video edited based on the audio and video analog signals from 0 can be recorded on the digital VTR 500 as digital signals.

Furthermore, if the audio and video digital stream signals from the digital VTR 500 are recorded on the hard disk 100 in advance, then the digital VTR
With the 500 detached, for example, at another location, an editing machine having the hard disk device H1 as a main component and a monitor TV
With only the 504 connected, only the 504 can be edited based on the audio and video digital stream signals in the hard disk 100, and the edited audio and video can be edited at any time by the digital VTR 500 or It can be recorded on an analog VTR 120 different from the digital VTR 500 at any time.

After the editing of the AV / subcode digital stream signal, the hard disk drive H1 reproduces the AV / subcode digital stream signal recorded on the hard disk 100 by the interface control means 108, and the disk interface means 107 and bus interface means 103 and I
Digital VTR500 through EEE1394 bus B1
And while monitoring the audio digital stream signal in the AV / subcode digital stream signal,
At the timing controlled by the interface control means 108, a part of the audio digital stream signal recorded on the hard disk 100 is converted based on the analog audio signal from the analog audio input means 121 into an A / D converter 122, an encoder 123 and Recording means 12
4 can be replaced with the audio digital stream signal converted.

Therefore, after editing the AV / subcode digital stream signal, the hard disk 100
Can be re-edited using only the after-recording function or the like for only the audio digital stream signal in the AV / sub-code digital stream signal recorded in.

In each of the above embodiments, the case where the hard disk (HDD) 100 is used as the memory disk has been described as an example. However, a CD-RAM, DVD-RAM, etc. And the same operation and effect can be obtained.

Further, in each of the above embodiments, the case where the IEEE 1394 bus B1 is used as the stream bus has been described as an example, but it is similarly standardized for audio and video digital stream signals. As long as the bus is a standard bus, other standard buses can be used, and the same operation and effect can be obtained.

[0064]

As described above, according to the present invention, when audio and video from a digital VTR or an analog VTR, which is an information source, are edited using a memory disk, the data is stored in a memory disk device having the memory disk. By directly interfacing the memory disk with the digital stream bus for audio and video standardized by IEEE 1394, the recording of the digital stream signal as a recording area for the audio and video digital stream signal on the memory disk is performed. Set the position to be continuous, record only the digital stream signal in that area, maintain the continuity of data during recording and playback for the digital stream signal, edit as a stream signal in the digital signal state can do. Further, the AV / subcode digital stream signal and the control signal are controlled by the AV / subcode digital stream signal generation means based on the audio and video analog signals input from the outside through the input means. A signal is generated and recorded on the memory disk, and conversely, controlled by the interface control means, the analog video signal generation means reproduces the audio / video analog signal by the AV / subcode digital stream signal reproduced from the memory disk. A signal is generated and output from output means, and the analog video signal is converted to a monitor TV and another analog VT.
In addition to R, edit while monitoring the reproduced image by the monitor TV, and through input means and output means,
Recording and reproduction can be performed on analog VTRs connected to them in the same manner as digital VTRs.

As a result, editing of audio and video from the digital VTR can be performed at lower cost and more efficiently than in the past, and the editing can be speeded up.

In addition, between the digital VTR connected to the memory disk device and the analog VTR most widely used on the market at present, the memory disk device has an IEEE standard.
Audio and video edited on the basis of the audio and video digital stream signals from the digital VTR transmitted through the E1394 bus can be recorded on the analog VTR as analog signals, and conversely, audio and video from the analog VTR can be recorded. Audio and video edited based on the analog video signal can be recorded as digital signals on a digital VTR.

Further, the digital V
If the audio and video digital stream signals from the TR are recorded, then, with the digital VTR disconnected, for example, at another location, only the editing machine mainly composed of a memory disk device and the monitor TV are connected. As such, they can be edited on their own based on the audio and video digital stream signals in the memory disk, and the edited audio and video can be combined with the digital VTR or the digital VTR connected to the editor at any time. Can be recorded on another analog VTR at any time.

After editing the AV / sub-code digital stream signal, the memory disk device:
The interface control means reproduces the AV / subcode digital stream signal recorded on the memory disk, sends it to the digital VTR through the disk interface means, the bus interface means and the IEEE 1394 bus, and outputs the audio digital signal in the AV / subcode digital stream signal. While monitoring the stream signal, the A / D converter converts a part of the audio digital stream signal recorded on the memory disk based on the analog audio signal from the analog audio input means at the timing controlled by the interface control means. And an audio digital stream signal converted by the encoder and the recording means.

For this reason, after the above-mentioned editing of the AV / subcode digital stream signal, an after-recording function for only the audio digital stream signal in the AV / subcode digital stream signal recorded on the memory disk is used. Can be re-edited.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an audio-video editing system according to a first embodiment of the present invention;

FIG. 2 is a block diagram illustrating a configuration of an audio-video editing system according to a second embodiment of the present invention;

FIG. 3 is a block diagram showing a configuration of an audio-video editing system according to a third embodiment of the present invention;

FIG. 4 is a block diagram showing a configuration of a conventional audio-video editing system.

[Explanation of symbols]

Reference Signs List 100 hard disk 103 bus interface means 107 disk interface means 108 interface control means 109 display control means 110 time code detection means 111 time code memory means 112 display 113 light receiving means 116 AV / subcode digital stream signal generation means 119 analog video signal generation means 121 Analog audio input means 122 A / D converter 123 Encoder 124 Recording means 200 Input means 201 Character image generation means 202 Superimpose means 203 Output means (first output means) 204 Second output means 301 Mixing means 302 Small screen creation Memory means 303 Small screen creation means 500 Digital VTR 504 Monitor television B1, B3 IEEE 1394 bus H1 Hard disk Equipment

Claims (12)

[Claims] 1. A digital VTR for digitally recording and reproducing audio and video on and from a recording medium, and a memory disk device having a memory disk that is a recording medium different from the recording medium. A memory disk device is connected by a single stream bus standardized as a bus for audio and video digital stream signals, and audio input from the digital VTR to the memory disk device through the stream bus. And video, audio and video editing system for digitally editing using the memory disk,
The digital VTR includes, as the audio and video digital stream signals, an AV including a DVC-compressed audio digital stream signal output from the digital VTR, a video digital stream signal, and a subcode digital stream signal including a time code. / Subcode digital stream signal, and said digital VT
A bus interface capable of inputting and outputting all data corresponding to a control signal including a command for controlling R and a status signal of the digital VTR to and from the stream bus in a predetermined manner; A bus interface circuit for input / output, wherein the memory disk device is directly connected to the stream bus, and the stream bus corresponds to the AV / subcode digital stream signal and the control signal. A bus interface unit capable of inputting / outputting all data according to the predetermined method; and all data corresponding to an AV / subcode digital stream signal and a control signal from the bus interface unit.
Disk interface means capable of recording and reproducing the memory disk in frame units of video signals, interface control means for operating and controlling the bus interface means and the disk interface means by the control signal, and an external audio and video Input means for inputting an analog signal, and an AV / subcode digital signal controlled by the interface control means to generate the AV / subcode digital stream signal based on audio and video analog signals from the input means. A stream signal generating unit and an analog signal for audio and video are controlled by the AV / subcode digital stream signal reproduced from the memory disk under the control of the interface control unit. An analog video signal generating means, an output means for outputting analog signals for audio and video from the analog video signal generating means, and an analog audio for inputting only an analog audio signal which is audio information in the form of an analog signal. Input means, an A / D converter for converting an analog audio signal from the analog audio input means into a digital audio signal, and converting the digital audio signal from the A / D converter into a PCM audio signal by DV compression. An encoder, and a recording unit for recording a PCM audio signal obtained from the encoder on the memory disk through the disk interface unit, wherein the interface control unit controls and operates the digital VTR and the memory disk device. AV / subcode data from digital VTR All or a part of the digital stream signal is recorded on the memory disk through the stream bus and the bus interface means and the disk interface means, and thereafter, the memory disk is reproduced, and the AV / subcode digital stream signal is reproduced by The video signal is converted into an analog video signal through the disk interface means and the analog video signal generation means, and the analog video signal is added to the monitor TV from the output means.
While monitoring the reproduced image, the program for the cut-in point which is the starting point of the editing and the cut-out point which is the ending point of the editing is determined, and the interface control means reads the AV / subcode from the memory disk according to the program. Editing while reproducing the digital stream signal, and recording the analog signal for audio and video based on the edited AV / subcode digital stream signal on an analog VTR connected through the output terminal; and Edited AV
/ Subcode digital stream signal can be recorded on the digital VTR through the bus interface means and the stream bus, and further, after the AV / subcode digital stream signal is edited, the digital / video signal is recorded on the memory disk. When re-editing only the audio digital stream signal in the AV / subcode digital stream signal, the memory disk device converts the analog audio signal input from the analog audio input means into the A / D converter and The signal was converted into the PCM audio signal by the encoder and the recording means, recorded as an audio digital stream signal on the memory disk through the disk interface means, and recorded on the memory disk by the interface control means. The V / subcode digital stream signal is reproduced and sent to the digital VTR through the disk interface means and the bus interface means and the stream bus, and while monitoring the audio digital stream signal in the AV / subcode digital stream signal, At a timing controlled by the interface control means, a part of the audio digital stream signal in the AV / subcode digital stream signal recorded on the memory disk is converted based on the analog audio signal from the analog audio input means. An audio / video editing system characterized in that the audio / video editing system is replaced with an audio digital stream signal. 2. A digital VTR for recording and reproducing audio and video digitally on and from a recording medium, and a memory disk device having a memory disk as a recording medium different from the recording medium. A memory disk device is connected by a single stream bus standardized as a bus for audio and video digital stream signals, and audio input from the digital VTR to the memory disk device through the stream bus. And video, audio and video editing system for digitally editing using the memory disk,
The digital VTR includes, as the audio and video digital stream signals, an AV including a DVC-compressed audio digital stream signal output from the digital VTR, a video digital stream signal, and a subcode digital stream signal including a time code. / Subcode digital stream signal, and said digital VT
A bus interface capable of inputting and outputting all data corresponding to a control signal including a command for controlling R and a status signal of the digital VTR to and from the stream bus in a predetermined manner; A bus interface circuit for input / output, wherein the memory disk device is directly connected to the stream bus, and the stream bus corresponds to the AV / subcode digital stream signal and the control signal. A bus interface unit capable of inputting / outputting all data according to the predetermined method; and all data corresponding to an AV / subcode digital stream signal and a control signal from the bus interface unit.
Disk interface means capable of recording and reproducing the memory disk in frame units of video signals, interface control means for operating and controlling the bus interface means and the disk interface means by the control signal, and an external audio and video Input means for inputting an analog signal, and an AV / subcode digital signal controlled by the interface control means to generate the AV / subcode digital stream signal based on audio and video analog signals from the input means. A stream signal generating unit and an analog signal for audio and video are controlled by the AV / subcode digital stream signal reproduced from the memory disk under the control of the interface control unit. An analog video signal generating means, an output means for outputting analog signals for audio and video from the analog video signal generating means, and an analog audio for inputting only an analog audio signal which is audio information in the form of an analog signal. Input means, an A / D converter for converting an analog audio signal from the analog audio input means into a digital audio signal, and converting the digital audio signal from the A / D converter into a PCM audio signal by DV compression. An encoder, and a recording unit for recording a PCM audio signal obtained from the encoder on the memory disk through the disk interface unit, wherein the interface control unit controls and operates the digital VTR and the memory disk device. AV / subcode data from digital VTR All or a part of the digital stream signal is recorded on the memory disk through the stream bus and the bus interface means and the disk interface means, and thereafter, the memory disk is reproduced, and the AV / subcode digital stream signal is reproduced by The video signal is converted into an analog video signal through the disk interface means and the analog video signal generation means, and the analog video signal is added to the monitor TV from the output means.
While monitoring the reproduced image, the program for the cut-in point which is the starting point of the editing and the cut-out point which is the ending point of the editing is determined, and the interface control means reads the AV / subcode from the memory disk according to the program. Editing while reproducing the digital stream signal, and recording the analog signal for audio and video based on the edited AV / subcode digital stream signal on an analog VTR connected through the output terminal; and Edited AV
/ Subcode digital stream signal can be recorded on the digital VTR through the bus interface means and the stream bus, and further, after the AV / subcode digital stream signal is edited, the digital / video signal is recorded on the memory disk. When re-editing only the audio digital stream signal in the AV / sub-code digital stream signal, the interface control means controls the AV recorded on the memory disk.
/ Subcode digital stream signal, and reproduces the digital V signal through the disk interface means and the bus interface means and the stream bus.
TR, and monitors the audio digital stream signal in the AV / subcode digital stream signal, while controlling the AV recorded on the memory disk at the timing controlled by the interface control means.
An audio / video editing system, wherein a part of an audio digital stream signal in a subcode digital stream signal is replaced with an audio digital stream signal converted based on an analog audio signal from the analog audio input means. 3. A digital VTR for digitally recording and reproducing audio and video on and from a recording medium, and a memory disk device having a memory disk as a recording medium different from the recording medium. A memory disk device is connected by a single stream bus standardized as a bus for audio and video digital stream signals, and audio input from the digital VTR to the memory disk device through the stream bus. And video, audio and video editing system for digitally editing using the memory disk,
The digital VTR includes, as the audio and video digital stream signals, an AV including a DVC-compressed audio digital stream signal output from the digital VTR, a video digital stream signal, and a subcode digital stream signal including a time code. / Subcode digital stream signal, and said digital VT
A bus interface capable of inputting and outputting all data corresponding to a control signal including a command for controlling R and a status signal of the digital VTR to and from the stream bus in a predetermined manner; A bus interface circuit for input / output, wherein the memory disk device is directly connected to the stream bus, and the stream bus corresponds to the AV / subcode digital stream signal and the control signal. A bus interface unit capable of inputting / outputting all data according to the predetermined method; and all data corresponding to an AV / subcode digital stream signal and a control signal from the bus interface unit.
Disk interface means capable of recording and reproducing the memory disk in frame units of video signals, interface control means for operating and controlling the bus interface means and the disk interface means by the control signal, and an external audio and video Input means for inputting an analog signal, and an AV / subcode digital signal controlled by the interface control means to generate the AV / subcode digital stream signal based on audio and video analog signals from the input means. A stream signal generating unit and an analog signal for audio and video are controlled by the AV / subcode digital stream signal reproduced from the memory disk under the control of the interface control unit. An analog video signal generating unit, an output unit for outputting analog signals for audio and video from the analog video signal generating unit, and an analog audio for inputting only an analog audio signal which is audio information in the form of an analog signal. Input means, an A / D converter for converting an analog audio signal from the analog audio input means into a digital audio signal, and converting the digital audio signal from the A / D converter into a PCM audio signal by DV compression. An encoder, and a recording unit for recording a PCM audio signal obtained from the encoder on the memory disk through the disk interface unit, wherein the interface control unit controls and operates the digital VTR and the memory disk device. AV
Recording the AV / subcode digital stream signal obtained from the / subcode digital stream signal generation means on the memory disk through the disk interface means, and then reproducing the memory disk;
The AV / subcode digital stream signal is converted into an analog video signal through the disk interface means and the analog video signal generation means, and the analog video signal is applied from the output means to the monitor TV, and reproduced by the monitor TV. While monitoring the image, a program for a cut-in point, which is a starting point of editing, and a cut-out point, which is an ending point of editing, are determined, and the interface control means controls the AV / subcode digital stream from the memory disk according to the program. Editing while reproducing the signal, and recording the analog signal for audio and video based on the edited AV / subcode digital stream signal on an analog VTR connected through the output terminal;
Also, the edited AV / subcode digital stream signal can be recorded on the digital VTR through the bus interface means and the stream bus, and after editing the AV / subcode digital stream signal, When reediting only the audio digital stream signal in the AV / subcode digital stream signal recorded on the memory disk,
In the memory disk device, the analog audio signal input from the analog audio input means is converted into the PCM audio signal by the A / D converter, encoder and recording means, and is converted as an audio digital stream signal through the disk interface means. The AV / subcode digital stream signal recorded on the memory disk and recorded on the memory disk by the interface control means is reproduced, and the digital VTR is transmitted to the digital VTR through the disk interface means, bus interface means and stream bus. While monitoring the audio digital stream signal in the AV / subcode digital stream signal, the memo is recorded at the timing controlled by the interface control means. A part of the audio digital stream signal in the AV / subcode digital stream signal recorded on the disc is replaced with an audio digital stream signal converted based on the analog audio signal from the analog audio input means. Audio-video editing system. 4. A digital VTR for digitally recording and reproducing audio and video on and from a recording medium, and a memory disk device having a memory disk as a recording medium different from the recording medium. A memory disk device is connected by one stream bus standardized as a bus for audio and video digital stream signals, and audio input from the digital VTR to the memory disk device through the stream bus. And video, audio and video editing system for digitally editing using the memory disk,
The digital VTR includes, as the audio and video digital stream signals, an AV including a DVC-compressed audio digital stream signal output from the digital VTR, a video digital stream signal, and a subcode digital stream signal including a time code. / Subcode digital stream signal, and said digital VT
A bus interface capable of inputting and outputting all data corresponding to a control signal including a command for controlling R and a status signal of the digital VTR to and from the stream bus in a predetermined manner; A bus interface circuit for input / output, wherein the memory disk device is directly connected to the stream bus, and the stream bus corresponds to the AV / subcode digital stream signal and the control signal. A bus interface unit capable of inputting / outputting all data according to the predetermined method; and all data corresponding to an AV / subcode digital stream signal and a control signal from the bus interface unit.
Disk interface means capable of recording and reproducing the memory disk in frame units of video signals, interface control means for operating and controlling the bus interface means and the disk interface means by the control signal, and an external audio and video Input means for inputting an analog signal, and an AV / subcode digital signal controlled by the interface control means to generate the AV / subcode digital stream signal based on audio and video analog signals from the input means. A stream signal generating unit and an analog signal for audio and video are controlled by the AV / subcode digital stream signal reproduced from the memory disk under the control of the interface control unit. An analog video signal generating unit, an output unit for outputting analog signals for audio and video from the analog video signal generating unit, and an analog audio for inputting only an analog audio signal which is audio information in the form of an analog signal. Input means, an A / D converter for converting an analog audio signal from the analog audio input means into a digital audio signal, and converting the digital audio signal from the A / D converter into a PCM audio signal by DV compression. An encoder, and a recording unit for recording a PCM audio signal obtained from the encoder on the memory disk through the disk interface unit, wherein the interface control unit controls and operates the digital VTR and the memory disk device. AV
Recording the AV / subcode digital stream signal obtained from the / subcode digital stream signal generation means on the memory disk through the disk interface means, and then reproducing the memory disk;
The AV / subcode digital stream signal is converted into an analog video signal through the disk interface means and the analog video signal generation means, and the analog video signal is applied from the output means to the monitor TV, and reproduced by the monitor TV. While monitoring the image, a program for a cut-in point, which is a starting point of editing, and a cut-out point, which is an ending point of editing, are determined, and the interface control means controls the AV / subcode digital stream from the memory disk according to the program. Editing while reproducing the signal, and recording the analog signal for audio and video based on the edited AV / subcode digital stream signal on an analog VTR connected through the output terminal;
Also, the edited AV / subcode digital stream signal can be recorded on the digital VTR through the bus interface means and the stream bus, and after editing the AV / subcode digital stream signal, When reediting only the audio digital stream signal in the AV / subcode digital stream signal recorded on the memory disk,
The interface control means reproduces an AV / subcode digital stream signal recorded on the memory disk, sends the signal to the digital VTR through the disk interface means, bus interface means and stream bus, and reproduces the AV / subcode digital stream. While monitoring the audio digital stream signal in the signal, a part of the audio digital stream signal in the AV / subcode digital stream signal recorded on the memory disk is converted into the analog digital signal at the timing controlled by the interface control means. An audio-video editing system, wherein the audio-video editing system replaces an audio digital stream signal converted based on an analog audio signal from an audio input unit. 5. A digital VTR that digitally records and reproduces audio and video on and from a recording medium, and a memory disk device having a memory disk that is a recording medium different from the recording medium. A memory disk device is connected by one stream bus standardized as a bus for audio and video digital stream signals, and audio input from the digital VTR to the memory disk device through the stream bus. And video, audio and video editing system for digitally editing using the memory disk,
The digital VTR includes, as the audio and video digital stream signals, an AV including a DVC-compressed audio digital stream signal output from the digital VTR, a video digital stream signal, and a subcode digital stream signal including a time code. / Subcode digital stream signal, and said digital VT
A bus interface capable of inputting and outputting all data corresponding to a control signal including a command for controlling R and a status signal of the digital VTR to and from the stream bus in a predetermined manner; A bus interface circuit for input / output, wherein the memory disk device is directly connected to the stream bus, and the stream bus corresponds to the AV / subcode digital stream signal and the control signal. A bus interface unit capable of inputting / outputting all data according to the predetermined method; and all data corresponding to an AV / subcode digital stream signal and a control signal from the bus interface unit.
Disk interface means capable of recording and reproducing the memory disk in frame units of video signals, interface control means for operating and controlling the bus interface means and the disk interface means by the control signal, and an external audio and video Input means for inputting an analog signal, and an AV / subcode digital signal controlled by the interface control means to generate the AV / subcode digital stream signal based on audio and video analog signals from the input means. A stream signal generating unit and an analog signal for audio and video are controlled by the AV / subcode digital stream signal reproduced from the memory disk under the control of the interface control unit. An analog video signal generating means, an output means for outputting analog signals for audio and video from the analog video signal generating means, and an analog audio for inputting only an analog audio signal which is audio information in the form of an analog signal. Input means, an A / D converter for converting an analog audio signal from the analog audio input means into a digital audio signal, and converting the digital audio signal from the A / D converter into a PCM audio signal by DV compression. An encoder, and a recording unit for recording a PCM audio signal obtained from the encoder on the memory disk through the disk interface unit, wherein the interface control unit controls and operates the digital VTR and the memory disk device. AV / subcode data from digital VTR All or part of the barrel stream signal, and records in the memory disk via the stream bus and the bus interface means and the disc interface means to convert the analog signal from said input means AV
/ Subcode digital stream signal is recorded on the memory disk through the disk interface means, and thereafter, the memory disk is reproduced and its AV /
The sub-code digital stream signal is converted into an analog video signal through the disk interface means and the analog video signal generation means, and the analog video signal is applied from the output means to a monitor TV, and a reproduced image by the monitor TV is monitored. Meanwhile, a program of a cut-in point as an editing start point and a cut-out point as an editing end point is determined, and the AV / subcode digital stream signal is reproduced from the memory disk according to the program by the interface control means. While editing, the analog signal for audio and video based on the edited AV / subcode digital stream signal can be recorded on an analog VTR connected through the output terminal, and the edited AV / subcode Sabiko The digital VTR can also be recorded on the digital VTR through the bus interface means and the stream bus, and after editing the AV / subcode digital stream signal, the AV / When re-editing only the audio digital stream signal in the sub-code digital stream signal, the memory disk device converts the analog audio signal input from the analog audio input means into the A / D converter, the encoder, The PCM audio signal is converted into a PCM audio signal by a recording means, and is recorded as an audio digital stream signal on the memory disk through the disk interface means, and the AV / SA recorded on the memory disk by the interface control means. Play the code digital stream signal, sent to the digital VTR via the disk interface means and the bus interface means and the stream bus, the AV
While monitoring the audio digital stream signal in the / subcode digital stream signal, one of the audio digital stream signals in the AV / subcode digital stream signal recorded on the memory disk at the timing controlled by the interface control means. An audio / video editing system, wherein the unit is replaced with an audio / digital stream signal converted based on an analog audio signal from the analog audio input unit. 6. A digital VTR for digitally recording and reproducing audio and video on and from a recording medium, and a memory disk device having a memory disk as a recording medium different from the recording medium. A memory disk device is connected by one stream bus standardized as a bus for audio and video digital stream signals, and audio input from the digital VTR to the memory disk device through the stream bus. And video, audio and video editing system for digitally editing using the memory disk,
The digital VTR includes, as the audio and video digital stream signals, an AV including a DVC-compressed audio digital stream signal output from the digital VTR, a video digital stream signal, and a subcode digital stream signal including a time code. / Subcode digital stream signal, and said digital VT
A bus interface capable of inputting and outputting all data corresponding to a control signal including a command for controlling R and a status signal of the digital VTR to and from the stream bus in a predetermined manner; A bus interface circuit for input / output, wherein the memory disk device is directly connected to the stream bus, and the stream bus corresponds to the AV / subcode digital stream signal and the control signal. A bus interface unit capable of inputting / outputting all data according to the predetermined method; and all data corresponding to an AV / subcode digital stream signal and a control signal from the bus interface unit.
Disk interface means capable of recording and reproducing the memory disk in frame units of video signals, interface control means for operating and controlling the bus interface means and the disk interface means by the control signal, and an external audio and video Input means for inputting an analog signal, and an AV / subcode digital signal controlled by the interface control means to generate the AV / subcode digital stream signal based on audio and video analog signals from the input means. A stream signal generating unit and an analog signal for audio and video are controlled by the AV / subcode digital stream signal reproduced from the memory disk under the control of the interface control unit. An analog video signal generating means, an output means for outputting analog signals for audio and video from the analog video signal generating means, and an analog audio for inputting only an analog audio signal which is audio information in the form of an analog signal. Input means, an A / D converter for converting an analog audio signal from the analog audio input means into a digital audio signal, and converting the digital audio signal from the A / D converter into a PCM audio signal by DV compression. An encoder, and a recording unit for recording a PCM audio signal obtained from the encoder on the memory disk through the disk interface unit, wherein the interface control unit controls and operates the digital VTR and the memory disk device. AV / subcode data from digital VTR All or part of the barrel stream signal, and records in the memory disk via the stream bus and the bus interface means and the disc interface means to convert the analog signal from said input means AV
/ Subcode digital stream signal is recorded on the memory disk through the disk interface means, and thereafter, the memory disk is reproduced and its AV /
The sub-code digital stream signal is converted into an analog video signal through the disk interface means and the analog video signal generation means, and the analog video signal is applied from the output means to a monitor TV, and a reproduced image by the monitor TV is monitored. Meanwhile, a program of a cut-in point as an editing start point and a cut-out point as an editing end point is determined, and the AV / subcode digital stream signal is reproduced from the memory disk according to the program by the interface control means. While editing, the analog signal for audio and video based on the edited AV / subcode digital stream signal can be recorded on an analog VTR connected through the output terminal, and the edited AV / subcode Sabiko The digital VTR can also be recorded on the digital VTR through the bus interface means and the stream bus, and after editing the AV / subcode digital stream signal, the AV / When re-editing only the audio digital stream signal in the sub-code digital stream signal, the interface control means reproduces the AV / sub-code digital stream signal recorded on the memory disk,
The digital interface is sent to the digital VTR through the disk interface unit, the bus interface unit, and the stream bus, and while monitoring the audio digital stream signal in the AV / subcode digital stream signal, the timing is controlled by the interface control unit. A part of an audio digital stream signal in an AV / subcode digital stream signal recorded on a memory disk is replaced with an audio digital stream signal converted based on an analog audio signal from the analog audio input means. Audio and video editing system. 7. When editing audio and video input to a memory disk device, the memory disk device is controlled by an interface control means to set a time code corresponding to an edit cut-in point and a cut-out point. Time code detecting means for detecting and extracting from the subcode digital stream signal, time code memory means for storing the time code from the time code detecting means, and a display for displaying the contents of the time code memory means. Display control means for controlling the display, and displaying the time code on the display corresponding to the number of programs consisting of the cut-in point and the cut-out point. While monitoring the edit list displayed on the display unit corresponding to the editing program, 7. The audio-video editing system according to claim 1, wherein editing is performed. 8. When editing audio and video input to a memory disk device, the memory disk device sets a cut-in point and a cut-out point for editing based on a time code in a time code memory means and each program number. Character image generating means for converting the character information into a character display image signal to generate a character image signal; and superimposing the character image signal from the character image generating means on the analog image signal from the analog image signal generating means. Superimposing means for generating a paused analog video signal, first output means for outputting an analog video signal from the superimposing means, and second output means for outputting an analog video signal from the analog video signal generating means The analog video signal from the first output means is added to a monitor TV, and the reproduced image is The audio-video editing system according to claim 7, wherein the editing is performed while monitoring an editing list corresponding to the editing program. 9. When editing audio and video input to a memory disk device, the memory disk device is controlled by display control means to correspond to cut-in and cut-out points of editing and each program number. A small screen creating means for thinning out the analog video signal from the analog video signal generating means to create a still image small screen signal;
A small-screen creation memory means for temporarily storing a still-image small-screen signal from the small-screen creation means; and a still-image small-screen signal from the small-screen creation means, controlled by the display control means, and the analog signal. Mixing means for outputting, to the first output means, a video signal of a picture-in-picture screen created by mixing the analog video signal from the video signal generation means, and outputting the video signal of the picture-in-picture screen from the mixing means. 9. The audio / video editing apparatus according to claim 8, wherein the signal is added to the monitor TV through the first output means, and editing is performed while monitoring the reproduced image and the editing small screen corresponding to the editing program. system. 10. When editing audio and video input to a memory disk device, the memory disk device
A light receiving unit for receiving light emission for an operation command from an external remote controller as a signal for operation and control by the interface control unit; and The remote control by the remote controller through a display control means based on a signal, whereby the interface control means executes the operation and control based on an operation command from the remote control. Item 10. The audio-video editing system according to any one of Items 9. 11. When editing audio and video input to a memory disk device, the memory disk device
The bus interface means is connected to one end of another stream bus provided in addition to the stream bus to the digital VTR, and the stream bus is also connected to the AV / subcode digital stream signal and control. The data corresponding to the signal is configured to be input / output according to a predetermined method, and is connected to the other end of the another stream bus. 11. The computer according to claim 1, wherein data corresponding to the signal and the control signal is controlled and edited by a personal computer having an interface capable of inputting and outputting the data in the predetermined format. The audiovisual editing system as described. 12. The audio-video editing system according to claim 1, wherein an IEEE 1394 bus determined by IEEE is used as the stream bus.