JPH05109200A - Video signal recorder - Google Patents

Abstract

(57) [Summary] [Structure] The camera unit 10 photographs a subject and outputs a video signal. The video signal processing unit 20 modulates this video signal and supplies it to the head unit 40 as a video analog video signal. The still image video signal processing unit 30 compresses data of one frame or one field of the video signal and supplies the data to the head unit 40 as a digital video signal of a still image. The head unit 40 records an analog video signal and a digital video signal in a video area and a PCM audio area, respectively. The control unit 50 controls each unit so as to record the catalog display image data and the recording position data of the recorded moving image or still image at the head of the PCM audio area. [Effect] At the time of reproduction, the recorded contents can be easily known from the catalog display image data, and a desired moving image or still image can be quickly reproduced from the recording position data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video signal recording apparatus, for example, a video signal recording apparatus for recording a still image as a digital video signal in a so-called PCM audio area of a magnetic tape used in a so-called 8 mm video tape recorder. ..

[0002]

2. Description of the Related Art As an apparatus for recording a video signal obtained by photographing a subject on a recording medium, for example, a magnetic recording medium,
For example, a so-called electronic still camera that records a video signal of a still image on a so-called still video floppy, or a so-called camera-integrated 8 mm video tape recorder that records a video signal of a moving image on a magnetic tape (hereinafter referred to as a camera-integrated 8 mm VTR).
Etc. are known.

Specifically, for example, a camera integrated type 8 mm VT
In R, a magnetic tape is wound around a so-called rotary head drum at an angle of 211 degrees, and a pair of heads at 180-degree intervals (so-called rotary heads) helically scan the magnetic tape, as shown in FIG. An oblique track 81 is formed on the magnetic tape 80. Then, in the video area 82 corresponding to 180 degrees of the rotary head drum of each track 81, the luminance signal is FM-modulated, the carrier color signal is converted to a low frequency, and the audio signal is FM-modulated.
A tracking signal for tracking servo, for example, a pilot signal for so-called ATF (Automatic Track Finding) control is frequency-multiplexed and recorded. Further, in the PCM audio area 83 corresponding to about 30 degrees of the remaining rotary head drum of each track 81, non-linearly quantized 8-bit / sample digital audio signal (hereinafter referred to as PCM audio signal)
However, after so-called cross-interleave code processing for error correction is performed, a synchronization signal, parity, etc. are added and recorded. A fixed head scans on both sides of the magnetic tape 80 to form a cue track 84 and an audio track 85. Then, the cue signal is recorded on the cue track 84 for use in, for example, the address of the recorded content or the beginning of the recording, and the audio track 85 is recorded after the dubbing (after record).
ing) audio signal is recorded.

Further, for example, as disclosed in Japanese Patent Application Laid-Open No. 58-164383, to display (superimpose) a title, cast, explanation and the like on the moving image recorded in the video area 82. In addition, there is known a technique of photographing a still image such as character information and recording (recording) it in the PCM audio area 83.

The above-mentioned electronic still camera is generally known as a device for recording a video signal of a still image. The above-described camera-integrated 8 mm VTR is used as a digital image signal for a still image in the PCM audio area. It can be considered to be used as a video signal recording device for recording as.
In this case, one still image depends on the data compression rate at the time of recording, and is recorded using, for example, several tens to several hundred tracks,
A large amount of still images, for example, hundreds of still images can be recorded on one magnetic tape.

[0006]

Therefore, in the above-mentioned electronic still camera, since the floppy disk is used as the recording medium, random access is possible and a desired still image can be easily found and reproduced. With the camera-integrated 8mm VTR, a large amount of still images can be recorded on one magnetic tape as described above, and since the magnetic tape allows only sequential access in the playback direction or the reverse playback direction, the desired still image can be quickly found. Is almost impossible. That is, the camera-integrated 8 mm VTR using a magnetic tape as a recording medium has a problem in convenience when used as a device for recording and reproducing a still image.

The present invention has been made in view of such circumstances, and each track on the magnetic tape formed by helical scanning is divided into a first area and a second area, and the first area is divided. In a video signal recording apparatus for recording a moving picture as an analog video signal in a second area and a digital signal in a second area, a still picture is recorded as a digital video signal in the second area and recorded in the first area. An object of the present invention is to provide a video signal recording device capable of easily knowing the content of a moving image or a still image recorded in the second area and easily reproducing a desired moving image or still image. And

[0008]

According to the present invention, in order to solve the above-mentioned problems, each track on a magnetic tape formed by helical scanning is divided into a first area and a second area. In the video signal recording device for recording a moving image as an analog video signal in the area 2 and a digital signal in the second area, a digital video signal recording means for recording a still image as the digital video signal in the second area. And a recording means for recording the index display image data of the recorded moving image or still image and the recording position data on the magnetic tape in the second area.

[0009]

In the video signal recording apparatus according to the present invention, the index display image data showing the contents of the moving image recorded in the first area or the still image recorded in the second area and the recording position data on the magnetic tape are recorded in the second area. Record in the area.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a video signal recording apparatus according to the present invention will be described below with reference to the drawings. In this embodiment, the present invention is a so-called camera-integrated 8 mm VTR (hereinafter simply referred to as VTR).
1) and FIG. 1 is a block circuit diagram showing the circuit configuration of this VTR.

As shown in FIG. 1, the VTR converts a picked-up image signal into a digital signal and performs a signal processing such as so-called knee and gamma correction, and a video signal from the camera section 10. A video signal processing unit 20 for converting a video signal to an analog signal and outputting the video signal, and performing signal processing such as contour compensation on a video signal for playback, and one frame or one field of the video signal from the camera unit 10. To the still image video signal processing unit 30 which reproduces the video signal of the still image while outputting the signal after performing signal processing such as data compression processing, and the analog video signal and the still image video signal from the moving image video signal processing unit 20. The digital video signal from the processing unit 30 is time-division multiplexed and recorded in the so-called video area and PCM audio area of the magnetic tape 1 and recorded. A head unit 40 for reproducing these video signals, and from the moving picture video signal processing unit 20, Metropolitan control unit 50 for controlling the still picture video signal processing unit 30 or the like.

The VTR converts an image pickup signal obtained by photographing a subject with the camera unit 10 into a digital signal, performs signal processing such as knee and gamma correction, and then performs signal processing. The signal is converted into an analog signal and recorded in the video area of the magnetic tape 1 as a video signal of a moving picture, and the video signal of the moving picture recorded in this video area is reproduced and output as a video signal compliant with the so-called NTSC system, for example. It is supposed to do. Also, this V
The TR records one frame or one field of the video signal obtained by the camera unit 10 as described above in the PCM audio area of the magnetic tape 1 as a video signal of a still image and also in the PCM audio area. A video signal of a still image is reproduced, and the reproduced video signal for one frame or one field is repeatedly output as a video signal conforming to the NTSC system. The VTR also indicates data (hereinafter referred to as recording position data) indicating the recording position on the magnetic tape 1 of the video signal of the moving image or the still image recorded as described above, and the content of the recorded moving image or the still image. The catalog display image data is displayed, for example, in PCM.
While recording at the beginning of the audio area, during playback,
By reproducing the catalog display image data recorded at the beginning of the PCM audio area by the user, the video signal of the catalog display image data is output to, for example, a monitor receiver and displayed, and the user records it on the magnetic tape 1. The contents of a moving image or a still image being played can be easily known, and the reproduction position is controlled based on the recording position data to be reproduced.

Specifically, as shown in FIG. 1, the camera section 10 includes a CCD image sensor (hereinafter referred to as a CCD image sensor).
11) and after the image pickup signal from the CCD 11 is sampled, a so-called AGC (Automatic Gain Control)
S / H & AGC circuit 12 for applying
An analog / digital (hereinafter referred to as A / D) converter 13 for converting a sampled video signal from the circuit 12 into a digital signal, and a video signal from the A / D converter 13 such as contour compensation, pedestal clamp, white The camera process circuit 14 performs various kinds of signal processing such as clip, knee, gamma correction, and black clip.

The camera unit 10 performs various signal processing on a video signal obtained by photographing a subject, for example, contour compensation for compensating for insufficient high-frequency components of spatial frequency of an optical system, an image sensor, and the like. Alternatively, signal processing such as so-called pedestal clamp that prevents the so-called pedestal level that is the reference of the black level from changing is performed, and the digital video signal that has been subjected to these signal processing is used as the moving image signal processing unit 20 and the still image signal. It is supplied to the processing unit 30.

Further, the moving picture / video signal processing section 20 has the still picture / video signal processing section 30 as shown in FIG.
Alternatively, a video RAM 22 for storing a video signal from the head unit 40 and the like and a video signal from the camera unit 10 are subjected to signal processing suitable for recording to form video data, and the video data is supplied to the head unit 40. At the same time, the video signal read out from the video RAM 22 is subjected to various kinds of signal processing such as contour compensation and then converted into a video signal compliant with the NTSC system, for example.
And the NTSC supplied from the video process circuit 21.
A digital / analog (hereinafter referred to as D / A) converter 23 for converting a video signal (digital signal) complying with the method into an analog signal, and moving image data from the video process circuit 21 is converted into an analog signal to convert the head portion. 40
And a video signal (analog signal) reproduced by the head section 40 and converted into a digital signal by the D / A converter 24 supplied to the video process circuit 21.
And an A / D converter 25 supplied to

The moving picture / video signal processing section 20 is
The luminance signal of the video signal from the camera process circuit 14 is FM-modulated by a predetermined carrier wave, the carrier color signal is converted to a low frequency, and then frequency-multiplexed to form moving image data, and this moving image data is transmitted to the head unit 40. After being supplied, the video signal from the head unit 40 or the still image video signal processing unit 30 is subjected to various signal processing, for example, contour compensation for compensating for deterioration of high frequency components in the reproduction system, and then, for example, NTSC.
It is designed to be converted into an analog video signal conforming to the system and output.

Further, the still image video signal processing section 30 is
Similarly, as shown in FIG. 1, one frame or one field of the video signal from the camera unit 10 is subjected to predetermined data compression processing to form compressed data, and vice versa.
A still image video process circuit 31 which reproduces a video signal by subjecting compressed data to a data expansion process, and a signal for reducing the size of an image into a video signal for one frame or one field from the still image video process circuit 31. From the still image video process circuit 31, a reduction circuit 32 that performs processing, a video RAM 33 that stores, for example, a plurality of still images of the reduced video signal from the reduction circuit 32, and stores the still image data as list display image data. RAM 35 for temporarily storing the compressed data or the catalog display image data from the video RAM 33, and a still image data by adding a synchronization signal, an error correction code, etc. to the compressed data or the catalog display image data read from the RAM 35. Formed, and conversely, error correction processing is applied to still image data to reproduce compressed data etc. A PCM process circuit that supplies compressed data and the like to the RAM 35, supplies recording position data from the control unit 50 to the head unit 40, and vice versa, reproduces recording position data and supplies the recording position data to the control unit 50. And 34.

Then, the still image video signal processing unit 30
Is a predetermined data compression, for example, so-called adaptive dynamic range coding (ADRC: Ad) for one frame or one field of the video signal from the camera process circuit 14.
aptive Dyanmics Range Coding) and discrete cosine transform (D
A data compression process such as CT: Discrete Cosine Transform) is performed, a synchronization signal, an error correction code, etc. are added and supplied to the head unit 40, and conversely, data is converted into still image data reproduced by the head unit 40. A video signal of a still image obtained by performing signal processing such as decompression processing is transferred to the video RAM 2
It is designed to supply to 2. Further, the still image video signal processing unit 30 sets the size of the image to the index display image data stored in the video RAM 33, for example, the video signal for one frame or one field from the still image video process circuit 31, for example. A reduction process such as 1/9 is performed, and the reduced video signal is collected into a plurality of still images to supply a so-called multi-image video signal to the head unit 40, and conversely, the head unit 40. The catalog display image data reproduced in step S4 is supplied to the video RAM 22. Further, the still image video signal processing unit 30 supplies recording position data indicating the recording position of the video signal of the still image or the moving image on the magnetic tape 1 from the control unit 50 to the head unit 40, and vice versa. The position data is reproduced and supplied to the control unit 50.

Also, as shown in FIG. 1, the head section 40 time-division-multiplexes an analog video signal from the moving picture / video signal processing section 20 and still picture data from the still picture / video signal processing section 30. At the same time, the analog video signal of the moving picture and the still picture data are reproduced from the reproduced RF signal and supplied to the moving picture picture signal processing section 20 and the still picture picture signal processing section 30, respectively, and time division multiplexing from the MUX41. An amplifier 43 for amplifying a recording signal, an amplifier 44 for amplifying a reproduction RF signal, and a changeover switch 4 for switching the amplifier 43 and the amplifier 44 between recording and reproduction.
2 and a rotary head 45 which records a signal on the magnetic tape 1 based on the exciting current from the amplifier 43 and reproduces a reproduction RF signal to supply it to the amplifier 44.

The head section 40 is provided with the analog video signal from the D / A converter 24 and the PCM process circuit 3.
The digital video signal (still image data) from the No. 4 is time-division multiplexed and recorded in the video area and the PCM audio area of the magnetic tape 1, respectively, and the analog video signal of the moving image and the still image data are reproduced to perform A / D. Converter 25, PC
Each of them is supplied to the M process circuit 34.

As shown in FIG. 1, the control unit 50 also operates in this VTR, for example, a moving image shooting mode for recording a moving image signal, and a still image recording for a still image signal. A function control circuit 51 for setting various operation modes such as a mode, a control signal corresponding to the set mode from the function control circuit 51 and reproduced recording position data from the still image video signal processing unit 30. Based on the control of each unit, the system controller 52 that supplies the recording position data to the still image video signal processing unit 30 at the time of recording, and the addresses of the video RAMs 22 and 33 under the control of the system controller 52. And a memory controller 53 for controlling the.

Then, the control unit 50 controls the magnetic tape 1
The contents of a moving image or a still image recorded in, for example, the catalog display image data showing the recording position, the recording date, or the catalog display image data showing a plurality of recorded still images simultaneously by a multi-image, The recording control is performed, for example, at the beginning of the PCM audio area of the magnetic tape 1. Further, at this time, the control unit 50 controls to record the recording position data indicating the recording position of each video signal on the magnetic tape 1 together with the above-mentioned list display image data. Further, the control unit 50 is configured to promptly reproduce a desired moving image or still image designated by the user based on the reproduced recording position data during reproduction.

The magnetic tape 1 has the same tape format as the magnetic tape 80 shown in FIG. 5, for example. That is, a track obliquely formed on the magnetic tape 1 by the helical scanning of the rotary head 45 is divided into a video area and a PCM audio area, a moving image is recorded as an analog video signal in the video area, and the video is stopped in the PCM audio area. The image is recorded as a digital video signal. Further, the above-mentioned list display image data and recording position data are recorded in this PCM audio area.

Next, a VTR having the above configuration
In, a still image shooting mode for recording a video signal of a still image will be described. The system controller 52 is
For example, when the user sets the still image shooting mode in the function control circuit 51, a control signal corresponding to the setting is detected and each unit is controlled to operate in the still image shooting mode. When the shutter is operated, the shutter signal sent through the terminal 54 is detected every time the shutter is operated, and one frame or one field of the video signal obtained by photographing the subject with the camera unit 10 is detected. It is recorded in the PCM audio area of the magnetic tape 1 as a video signal of a still image.

Specifically, the S / H & AGC circuit 12 and the A / D converter 13 use the image pickup signal from the CCD 11 as an AG signal.
The camera process circuit 1 converts the video signal into a digital signal by applying C to the digital signal.
Supply to 4. The camera process circuit 14 subjects the video signal from the A / D converter 13 to signal processing such as contour compensation, pedestal clamp, white clip, knee, gamma correction, and black clip, and outputs the signal-processed video signal. It is supplied to the video process circuit 21 and the still image video process circuit 31.

The still image video process circuit 31 performs data compression such as ADRC on one frame or one field of the video signal from the camera process circuit 14 as needed to form compressed data, and the compressed data is generated. Are supplied to the RAM 35 via the PCM process circuit 34. Then, the RAM 35 temporarily stores this compressed data.

The PCM process circuit 34 adds a synchronizing signal, an error correction code, etc. to the compressed data read from the RAM 35 in a predetermined order to generate still image data, and the still image data is passed through the MUX 41 to the amplifier 43. Supply to the rotary head 45.

At this time, the system controller 52
A running system (not shown) so that the magnetic tape 1 starts running in synchronization with the supply of the still image data to the rotary head 45.
And the data indicating the recording position, the date, the time, etc. at which the recording on the magnetic tape 1 is started are stored in a built-in memory (not shown). Then, the system controller 52 performs control to stop the running of the magnetic tape 1 10 seconds after the recording is started. As a result, a still image is recorded as a digital video signal on tens to hundreds of tracks (depending on the data compression rate) of the PCM audio area of the magnetic tape 1.

On the other hand, the video process circuit 21 converts the video signal from the camera process circuit 14 into a video signal complying with the NTSC system, for example, and sends the video signal to the monitor receiver via the terminal 26. As a result, the user can monitor the image being captured.

The system controller 52 repeats the above-described still image recording operation each time the shutter is operated. Then, when the user finishes shooting the still image and releases the still image shooting mode in the function control circuit 51 or performs an operation of recording the catalog display image data, for example, the system controller 52 causes the magnetic tape 1 to operate.
Is controlled to rewind to the beginning, the magnetic tape 1 is started to run, and the still image video signal processing unit 30 and the head unit 40 are controlled to start recording the catalog display image data and the recording position data. ..

Specifically, the system controller 52
Each time the shutter is operated, the recording position data and the date data stored in the built-in memory are supplied to the memory controller 53, and the recording position data is supplied to the PCM process circuit 34.

The memory controller 53, based on the recording position data and the date data, records the number of the recorded still image,
For example, so-called characters for displaying the recording position data indicated by the elapsed time from the beginning of the tape and the date data during normal speed recording are generated, and these characters are supplied to the video RAM 33. And video RAM3
As shown in FIG. 2B, for example, 3 temporarily stores a video signal corresponding to an image composed of these characters (hereinafter referred to as a video signal of list display image data).

Then, the video RAM 33 reads out the video signal of the stored catalog display image data based on the read address from the memory controller 53 and supplies it to the still image video process circuit 31. The still image video process circuit 31 performs data compression processing on the video signal of the catalog display image data, forms compressed data, and supplies the compressed data to the RAM 35, as in the case of recording the video signal of the still image described above. The RAM 35 temporarily stores this compressed data.

The PCM process circuit 34 adds a synchronizing signal, an error correction code and the like to the compressed data read from the RAM 35 in a predetermined order to generate still image data, and also records the recording position data supplied from the system controller 52. This still image data is added to this still image data, and the still image data is added via the MUX 41 to the amplifier 43.
Supply to 5. As a result, for example, as shown in FIG.
At the beginning of the PCM audio area 3 of the magnetic tape 1, a video signal of catalog display image data (hereinafter referred to as a first specific example) including recording position data and date data is recorded together with the recording position data.

Here, the operation of recording other catalog display image data will be described. The list display image data may be, for example, a plurality of still images recorded in the PCM audio area of the magnetic tape 1 as described above (hereinafter referred to as a second specific example). Image data is recorded as follows.

The system controller 52 is the first controller described above.
Similarly to the recording operation of the specific example, when the user finishes shooting a still image and releases the still image shooting mode in the function control circuit 51, or performs an operation of recording the catalog display image data, for example, Control is performed to rewind the magnetic tape 1 to the beginning. Then, the system controller 52
Starts the reproduction of the PCM audio area of the magnetic tape 1 when the rewinding of the magnetic tape 1 is completed.
The still image video signal processing unit 30 and the head unit 40 are controlled.

Specifically, the PCM process circuit 34 is
From the PCM audio area of the magnetic tape 1 to the head section 40
Error correction processing is performed on the still image data reproduced by, and the obtained compressed data is supplied to the RAM 35. Then, the RAM 35 temporarily stores this compressed data.

The RAM 35 sequentially reads the stored compressed data when the compressed data of one frame or one field is stored, and the still image video process circuit 31 is read.
Supply to. The still image video process circuit 31 subjects the compressed data to signal processing such as ADRC decoding processing to reproduce a video signal, and supplies the video signal to the reduction circuit 32. The reduction circuit 32 performs signal processing for reducing the size of the image by thinning out the supplied video signal, and supplies the reduced video signal to the video RAM 33. The video RAM 33 is the memory controller 5
Based on the write address from 3, the reduced video signal is stored in one of the areas divided into, for example, 1/9.
At this time, the system controller 52 stores the recording position data indicating the position where the video signal of the reproduced still image was recorded in the built-in memory.

The above reproducing operation is repeated until the last still image recorded on the magnetic tape 1 is reproduced, for example, as shown in FIG.
As shown in FIG. 3A, after reducing the respective video signals obtained by reproducing the still images # 1, # 2, # 3, etc. recorded in the PCM audio area 3 of the magnetic tape 1, for example, FIG. As shown in FIG. 3, the data is stored in each divided area of the video RAM 33. That is, in the video RAM 33,
Video signals of a plurality of still images are stored as a multi-image.

Then, when the storage of the multi-picture video signal in the video RAM 33 is finished, the system controller 52 controls the magnetic tape 1 to rewind to the beginning again, and then starts the running of the magnetic tape 1. The still image video signal processing unit 30 and the head unit 40 start recording the list display image data, that is, the multi-image video signal stored in the video RAM 33, and the recording position data stored in the built-in memory. Control.

Specifically, the system controller 52
Supplies the recording position data stored in the built-in memory to the PCM process circuit 34 each time the above-mentioned still image is reproduced, and the memory controller 53 causes the video RAM 33 to store the list display image stored as a multi-image video signal. The control for reading the video signal of the data is performed.

Then, the video RAM 33 reads out the video signal of the stored catalog display image data based on the read address from the memory controller 53 and supplies it to the still image video process circuit 31. The still image video process circuit 31 to the RAM 35 perform data compression processing on the video signal of the catalog display image data to form compressed data, as in the recording operation of the above-described first specific example, and form a synchronization signal on the compressed data. Etc. are added to generate still image data, recording position data supplied from the system controller 52 is added, and this still image data is supplied to the rotary head 45 via the MUX 41 to the amplifier 43. As a result,
As shown in FIG. 3A, the video signal of the catalog display image data composed of multiple images is recorded at the beginning of the PCM audio area 3 of the magnetic tape 1 together with the recording position data.

Next, as described above, a desired still image is recorded from the magnetic tape 1 on which the video signal of the still image is recorded and the video signal of the catalog display image data is recorded at the head of the PCM audio area. A still image search / playback mode for searching and playing back the video signal will be described.

For example, when the function control circuit 51 sets the still image search / playback mode, the system controller 52 detects a control signal corresponding to the setting and controls the rewinding of the magnetic tape 1 to the beginning. Then, when the rewinding of the magnetic tape 1 is completed, the system controller 52 starts the reproduction of the video signal of the catalog display image data stored at the beginning of the PCM audio area of the magnetic tape 1 so that the moving image is reproduced. The signal processing unit 20, the still image video signal processing unit 30, and the head unit 40 are controlled.

Specifically, the PCM process circuit 34 is
Error correction processing is performed on the still image data of the catalog display image data reproduced by the head unit 40 from the beginning of the PCM audio area of the magnetic tape 1, and the obtained compressed data is supplied to the RAM 35, and is reproduced together with the catalog display image data. The recording position data to be recorded is detected, and this recording position data is supplied to the system controller 52. And R
The AM 35 temporarily stores this compressed data.

The RAM 35 sequentially reads the stored compressed data and supplies it to the still picture video process circuit 31. The still image video process circuit 31 subjects the compressed data to signal processing such as ADRC decoding processing to reproduce a video signal, and supplies the video signal to the video RAM 22.

The video RAM 22 is based on the write address from the memory controller 53, and is a video signal supplied from the still picture video process circuit 31, that is, PCM.
The video signal of the catalog display image data recorded at the beginning of the audio area is stored. When the video signal is stored for one field or one frame, the video RAM 22 repeatedly reads the stored video signal for one field or one frame based on the read address from the memory controller 53, and the video process is performed. Supply to the circuit 21.

The video process circuit 21 performs signal processing such as contour compensation on the video signal and converts the processed video signal into a video signal conforming to the NTSC system, for example, and the D / A converter 23. Supply to. D / A converter 2
3 converts this video signal (digital signal) into an analog signal and sends it to a monitor receiver via a terminal 24.

As a result, when the index display image data of the above-described first specific example (recording position data and date data) is recorded at the head of the PCM audio area, the screen of the monitor receiver displays For example, FIG. 2b described above.
An image corresponding to the image stored in the video RAM 33 shown in is displayed. Further, for example, when the list display image data of the above-described second specific example (multi-image) is being recorded, the screen of the monitor receiver may display, for example, FIG.
An image corresponding to the image stored in the video RAM 33 shown in b is displayed. Then, the user can easily know the contents of the still image recorded in the PCM audio area of the magnetic tape 1 by looking at the screen displayed on the monitor receiver.

Next, while looking at the image displayed on the monitor receiver, the user uses, for example, a search switch (not shown) provided in the operation section of this VTR,
When the number of the desired still image is selected, the system controller 52 recognizes the position where the video signal of the still image corresponding to the selected number is recorded, based on the recording position data described above, and the video of the still image is recognized. The running system is controlled so that the magnetic tape 1 runs at high speed to the position where the signal is recorded.

When the magnetic tape 1 travels to the position where the video signal of the desired still image is recorded, the system controller 52 reproduces the still image in the same manner as when reproducing the above-mentioned list display image data. The head unit 40, the still image video signal processing unit 30, and the moving image video signal processing unit 20 are controlled so as to reproduce the video signal. As a result, a desired still image is displayed on the monitor receiver. That is, unlike the conventional device, the user does not have to search for a desired still image by sequentially reproducing the still images, and can easily reproduce the desired still image. The user may manually select a desired still image based on the list display image data.

The present invention is not limited to the above-described embodiment. For example, the catalog display image data showing the contents of the moving image recorded in the video area of the magnetic tape 1 is displayed in the PCM audio area of the magnetic tape 1. It may be recorded at the beginning of the.

Here, the moving image shooting mode in which the moving image signal is recorded together with the moving image list display image data will be described. For example, when the function control circuit 51 sets the moving image shooting mode, the system controller 52 detects a control signal corresponding to the setting and controls each unit to operate in the moving image shooting mode. Then, when the shutter is operated, the shutter signal supplied through the terminal 54 is detected, and while recording the video signal captured by the camera unit 10 in the video area of the magnetic tape 1 while operating the shutter, For example, as in the second specific example described above, one frame or one field of each video signal of a plurality of recorded moving images is reduced to a multi-image, and the video signal is the beginning of the PCM audio area of the magnetic tape 1. To record.

Specifically, the S / H & AGC circuit 12 and the A / D converter 13 use the AG signal as an image pickup signal from the CCD 11.
The camera process circuit 1 converts the video signal into a digital signal by applying C to the digital signal.
Supply to 4. The camera process circuit 14 performs signal processing such as gamma correction on the video signal from the A / D converter 13, and supplies the processed video signal to the video process circuit 21 and the still image video process circuit 31. ..

The video process circuit 21 FM-modulates the luminance signal of the video signal supplied from the camera process circuit 14 by a predetermined carrier wave, converts the carrier chrominance signal to a low frequency, frequency-multiplexes the MUX 41 to the amplifier 43. Is supplied to the rotary head 45 via. As a result, the video signal of the moving image is recorded in the video area of the magnetic tape 1.

On the other hand, the reduction circuit 32 reduces one frame or one field of the video signal supplied from the camera process circuit 14 via the still image video process circuit 31 in the same manner as in the second specific example. The processed video signal is supplied to the video RAM 33. Under control of the memory controller 53, the video RAM 33 stores the reduced video signal in one of the areas divided into, for example, 1/9. At this time, the system controller 52 stores the recording start position of the video signal of the moving image recorded in the video area of the magnetic tape 1 in the built-in memory as recording position data.

Then, by repeating such a motion picture recording operation, for example, as shown in FIG. 4a, in the video area 2 of the magnetic tape 1, the motion pictures # 1, # 2, # 3 ...
Each video signal is recorded in the video RAM 33, and, for example, as shown in FIG. 4B, the video signal of each moving image is reduced to a multi-image by reducing, for example, the first one frame or one field. Remembered.

Then, the system controller 52 controls the rewinding of the magnetic tape 1 to the beginning at the time when the shooting of the moving image is finished, and then starts the running of the magnetic tape 1 and the still image video signal processing section 30. Also, the head unit 40 is controlled so as to start recording the index display image data, that is, the multi-image video signal stored in the video RAM 33 and the recording position data stored in the built-in memory.

Specifically, the system controller 52
Supplies the recording position data stored in the built-in memory to the PCM process circuit 34 every time a moving image is taken, and the memory controller 53 causes the video image of the catalog display image data stored in the video RAM 33 as a multi-image video signal. Controls to read the signal.

Then, the video RAM 33 reads out the video signal of the stored catalog display image data and supplies it to the still image video process circuit 31. The still image video process circuit 31 to the RAM 35 perform data compression processing on the video signal of the catalog display image data to form compressed data,
A synchronization signal or the like is added to this compressed data to generate still image data, and recording position data supplied from the system controller 52 is added, and this still image data is MU.
It is supplied to the rotary head 45 via the X41 to the amplifier 43. As a result, as shown in FIG. 4A described above, the video signal of the catalog display image data consisting of multiple images is recorded at the beginning of the PCM audio area 3 of the magnetic tape 1 together with the recording position data. The video signal of the catalog display image data recorded in the PCM audio area of the magnetic tape 1 is
Similar to the second specific example in the still image shooting mode, the video area of the magnetic tape 1 is reproduced once in order from the beginning, and each one frame or one field of the video signals of a plurality of moving images is reduced. Alternatively, the image signal may be obtained by forming a multi-image video signal.

Next, as described above, the video signal of the moving image is recorded in the video area, and the desired video is recorded from the magnetic tape 1 on which the video signal of the catalog display image data is recorded at the head of the PCM audio area. The search / playback mode of a moving image for which the video signal is played back will be described.

For example, when the function control circuit 51 sets the moving image search / playback mode, the system controller 52 detects a control signal corresponding to the setting and performs control to rewind the magnetic tape 1 to the beginning. Then, as in the case of the still image search / playback mode described above, the system controller 52, when the rewinding of the magnetic tape 1 is completed, the catalog display image data recorded at the beginning of the PCM audio area of the magnetic tape 1. The moving image / video signal processing unit 20, the still image / video signal processing unit 30, and the head unit 40 are controlled so as to start the reproduction of the image signal.

That is, the PC reproduced by the head unit 40.
The still image data at the head of the M audio area is subjected to signal processing such as error correction and ADRC decoding processing in the same manner as in the still image search / playback mode described above, and converted into a video signal of the catalog display image data, and the video RAM 22 Memorized in. At this time, the recording position data reproduced together with this video signal is supplied to the system controller 52.

Then, the video signal of the catalog display image data stored in the video RAM 22 is repeatedly read, as in the above-described still image search / playback mode, and then, for example, N.
The image signal is converted into a video signal conforming to the TSC system, and is sent to, for example, a monitor receiver via the D / A converter 23 and the terminal 24. As a result, an image corresponding to the image stored in the video RAM 33 shown in FIG. 4b, for example, is displayed on the screen of the monitor receiver. Then, the user can easily know the content of the moving image recorded in the video area of the magnetic tape 1 by looking at the screen displayed on the monitor receiver.

Next, when the user selects a desired moving picture number, for example, using the search switch provided in the operation section of this VTR while looking at the image displayed on the monitor receiver, the system is displayed. The controller 52 recognizes the position where the video signal of the moving image corresponding to the selected number is recorded, based on the above-mentioned recording position data, and the magnetic tape 1 moves to the position where the video signal of the moving image is recorded. The traveling system is controlled so that the vehicle travels at high speed.

When the magnetic tape 1 runs to the position where the video signal of the desired moving image is recorded, the system controller 52 reproduces the video signal of the moving image so that the head section 40 and the moving image signal processing section. Control 20.

Specifically, an analog video signal of a moving picture reproduced from the video area of the magnetic tape 1 by the head section 40 is converted into a digital signal (moving picture data) by the A / D converter 25. Video process circuit 21
Is the moving image data from the A / D converter 25, for example, NT
After being converted into a video signal conforming to the SC system, it is supplied to the monitor receiver via the D / A converter 23 and the terminal 26. As a result, a desired moving image is displayed on the monitor receiver. That is, unlike the conventional device, the user does not need to search for a desired moving image by so-called fast-forward reproduction, and can easily reproduce the desired moving image.

The same effect can be obtained by recording the catalog display image data in the video area of the magnetic tape 1 as one field of a normal moving image.

As is clear from the above description, this VTR
Each track on the magnetic tape 1 formed by the helical scanning of the rotary head 45 is divided into a video area and a PCM audio area, a moving image is recorded as an analog video signal in this video area, and a digital signal is recorded in the PCM audio area. In the VTR for recording the data, one frame or one field of a video signal obtained by photographing a subject with the camera unit 10, that is, a still image is converted into a PCM audio signal as a digital video signal by the still image video signal processing unit 30 and the head unit 40. By recording the catalog display image data indicating the content of the recorded moving image or still image and the recording position data on the magnetic tape in the PCM audio area, the PCM of the magnetic tape 1 is reproduced at the time of reproduction. Of the video or still images recorded in the audio area It is possible to know the easy. Also,
Unlike the conventional device, it is not necessary to sequentially play back still images to search for a desired still image, and it is not necessary to search for a moving image by fast-forwarding, for example, so that a desired moving image or still image can be easily played back. be able to.

The present invention is not limited to the above-described embodiment, and for example, a so-called deep layer recording system in which the recording area is divided in the thickness direction of the magnetic tape is adopted, and analog video signals and digital signals are It goes without saying that the present invention can be applied to a video tape recorder or the like capable of recording in each area.

[0071]

As is apparent from the above description, according to the present invention, each track on a magnetic tape formed by helical scanning is divided into a first area and a second area.
In a video signal recording apparatus for recording a moving image as an analog video signal in the area 2 and a digital signal in the second area, a still picture is recorded as a digital video signal in the second area, and the recorded moving picture or still picture is recorded. By recording the image list display image data and the recording position data on the magnetic tape in the second area, the contents of the moving image or the still image recorded on the magnetic tape can be easily known at the time of reproduction. .. Further, unlike the conventional device, it is not necessary to sequentially reproduce the still images to search for the desired still image,
Further, it is possible to easily reproduce a desired moving image or still image without the need to search the moving image for fast forward reproduction.

[Brief description of drawings]

FIG. 1 is a block circuit diagram showing a circuit configuration of a camera-integrated 8 mm video tape recorder to which the present invention is applied.

FIG. 2 shows a first specific example of the catalog display image data stored in a video RAM which constitutes the above-mentioned camera-integrated 8 mm video tape recorder, in which a video signal of a still image is recorded.
It is a figure shown with the recording form of a CM audio field.

FIG. 3 is a diagram showing a second specific example of the catalog display image data stored in the video RAM together with a recording form of a PCM audio area in which a video signal of a still image is recorded.

FIG. 4 is a diagram showing a specific example of the catalog display image data stored in the video RAM together with a recording mode of a video area in which a video signal of a moving image is recorded.

FIG. 5 is a diagram showing a tape format of a magnetic tape used in an 8 mm video tape recorder.

[Explanation of symbols]

 1 ... Magnetic tape 10 ... Camera section 30 ... Still image video signal processing section 32 ... Reduction circuit 33 ... Video RAM 40 ... Head section 52 ... System controller 53 ... Memory controller

Claims (1)

[Claims] 1. Each track on a magnetic tape formed by helical scanning is divided into a first area and a second area, and a moving image is recorded in the first area as an analog video signal, and the second area is recorded. In a video signal recording apparatus for recording a digital signal in the area (1), a digital video signal recording means for recording a still image as a digital video signal in the second area, and an index display image data and a magnetic field for the recorded moving image or still image. A video signal recording apparatus comprising recording means for recording recording position data on a tape in the second area.