JPH0884315A - Portable av equipment - Google Patents

Abstract

PURPOSE: To efficiently utilize the hardware resources by reproducing AV data while using the built-in hardware in common in the usual memory reproduction mode and the reception reproduction mode. CONSTITUTION: This equipment is composed of an ADSL adaptor 21 being a communication interface receiving AV data sent through a communication channel 20, an operation section 15 selecting the memory reproduction mode outputting a reproduction signal in response to the AV data read from a memory 1 or the reception reproduction mode outputting a reproduction signal in response to the received AV data, and a CPU 17, and also of a reception buffer 22 outputting the received AV data variable depending on a data reproduction processing speed, and a switch circuit 23 outputting selectively a reproduction signal in response to the AV data outputted from the memory 1 in the case of selecting the memory reproduction mode or outputting selectively the reproduction signal in response to the AV data outputted from the reception buffer 22 in the case of selecting the reception reproducing mode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention means three modes of audio data and / or video data (that is, audio data only, video data only, audio data and video data, and hereinafter referred to as "AV data". Note)
Not only normal recording / playback (that is, three modes of recording-only, playback-only, and recording / playback, which will be referred to as "recording / playback" hereinafter), but also through the public and private communication lines. The present invention relates to a portable AV device having an integrated structure capable of recording / reproducing AV data transmitted from a device.

[0002]

2. Description of the Related Art Currently, MPEG (Moving Picture Image)
DV capable of recording / reproducing AV data by improving the data compression technology by the Coding Expert Group) method
D (Digital Video Disc) has been developed. Also, with the development of this DVD, AV data (A
Realization of a service for supplying V software) in a wide range is desired.

In the United States, a network for supplying AV software to homes by using digital subscriber lines is already being put into practical use. That is, ADSL (Asymm) newly developed as a communication interface on the subscriber terminal side.
etric Digital Subscriber Line) adapter is used,
A method is adopted in which AV data received by the adapter is reproduced by a television receiver. This ADSL adapter adopts a data over voice system for communicating digital signals by utilizing the wide band which has not been used for digital subscriber lines, and 1.5 (M (Bit / s), on the other hand, it has a communication interface function for communicating at a low transmission rate on the reverse line.

On the other hand, in Japan, a small and lightweight portable telephone terminal which can be wirelessly connected to a public communication line is widely used. However, a small and lightweight portable AV terminal capable of recording / reproducing various kinds of AV software anytime and anywhere has not yet appeared, and only small and lightweight portable audio devices are scattered. . That is, this portable audio device converts an analog audio signal from a microphone into a digital audio signal and records it in a semiconductor memory card, and converts a digital audio signal recorded in the semiconductor memory card into an analog audio signal during reproduction. There is only a known audio recording / reproducing apparatus for outputting from a speaker (for example, Japanese Patent Laid-Open No. 173897/1993).
issue).

[0005]

[Problems to be Solved by the Invention]

(1) AV software, CD, distributed by communication line
A small and lightweight portable AV terminal capable of recording / reproducing both packaged AV software such as DVD anytime and anywhere has not been realized yet. As a result,
Even if a network for supplying the AV software as described above to each home is constructed, the received AV software can be used only for reproduction on the television receiver. Further, although there is a small and lightweight portable audio device as described above, it is only for recording / reproducing audio from a microphone, and it is not enough to record / reproduce packaged AV software. Therefore, conventionally,
A small and lightweight portable AV terminal capable of recording / reproducing both distributed AV software and packaged AV software anytime, anywhere has not been realized.

(2) Further, it is expected that a service network that supplies AV software over a wide range through a communication line will be realized with the development of DVDs. On the other hand, small and lightweight portable terminals have been used in fields other than AV, and some of them have a display such as a liquid crystal display. However, this is just a portable communication device (telephone). Wherever such devices are AV
However, there is a problem that the service network of AV software cannot be effectively used, for example. Furthermore, it is impossible to play a so-called packaged software by mounting a separate cartridge. Furthermore, it has been required to further reduce the amount of data transmitted to the partner station and ensure compatibility.

(3) The present invention comprises a memory cartridge using a solid-state memory capable of recording / reproducing both AV software distributed via a communication line or packaged AV software, and the AV supplied from this memory cartridge.
In addition to selectively recording / reproducing software, it is possible to record / reproduce AV software distributed from a communication line by interrupting the reproduction from this memory cartridge. It is an object of the present invention to provide a portable AV device having an integrated structure with a main body.

(4) Further, according to the present invention, AV data sent through a communication line and AV supplied from a cartridge are provided.
When selectively reproducing and recording data, control (transmission control) to send information (snap image, moving image) recorded by a communication line or the like, and reduce the amount of data when sending this information. It is an object of the present invention to provide a portable AV device which has an integrated structure suitable for carrying and recording and reproducing by a memory cartridge using a solid-state memory.

[0009]

In order to solve the above problems, the present invention provides a portable AV device having the following configurations (1) to (7).

(1) Portable AV device A equipped with a memory cartridge (memory) 1 for reproducing audio data and / or video data (AV data) and suitable for carrying
In addition, an ADSL adapter (communication means) 21 which is a communication interface for receiving at least received AV data transmitted via the communication line 20, and a memory for outputting a reproduction signal corresponding to the AV data read from the memory 1. A reproduction mode selecting means, which comprises an operation unit 15 and a CPU 17 for selecting one of a reproduction mode and a reception reproduction mode for outputting a reproduction signal corresponding to the received AV data, and a data reproduction processing speed. According to the reception buffer (reception AV
(Data output means) 22, and when the memory reproduction mode is selected, the reproduction signal corresponding to the AV data output from the memory 1 is switched and output, and when the reception reproduction mode is selected, the reception AV
A switch circuit (switching means) 2 for switching and outputting a reproduction signal according to the AV data output from the data output means 22.
3. A portable AV device comprising:

(2) A portable AV device A having a memory cartridge (memory) 1 for recording audio data and / or video data (AV data) and suitable for carrying
In addition, an ADSL adapter (communication means) 21 for receiving at least received AV data transmitted via the communication line 20, and a memory for recording AV data supplied from means other than this communication means 21 in the memory 1. The operation unit 15 for selecting one of a recording mode and a reception recording mode for recording the received AV data transmitted via the communication line 20 in the memory 1 and a CPU 17 (recording mode selection means) ), A reception buffer (reception AV data output means) 22 that variably outputs the reception AV data according to the data recording processing speed, and AV data supplied from a means other than the communication means 21 when the memory recording mode is selected. Of the AV data output from the reception AV data output unit 22 when the reception reproduction mode is selected. Portable AV apparatus, wherein a recording signal corresponding to and a switching circuit (switching means) 24 for outputting switching to the memory 1.

(3) First detection of free recording capacity of the memory cartridge (memory) 1 when the reception recording mode is selected
A detection procedure, a second detection procedure of detecting the data amount of AV data transmitted based on TOC information transmitted from a partner station prior to communication transmission of AV data, and the vacancy detected by the first detection procedure. The portable AV apparatus according to (2) above, further comprising a notification procedure (CPUs 14 and 17) for notifying the fact that the amount of data detected by the second detection procedure is larger than the recording capacity. .

(4) At least (compressed image data supplied from the communication line 20 or received AV data once compressed by the signal processing unit 11 via the input analog system circuit 13) is recompressed (duplexed). Recording encoder 10 for outputting compressed reception AV data after compression, lossless compression)
And a reproduction decoder 8 for expanding the compressed reception AV data and outputting the reception AV data. During recording, the compression reception AV data is recorded in the memory cartridge (memory) 1 through the recording encoder 10. , A compressed reception A output from the memory cartridge (memory) 1 during reproduction
4. The portable AV device according to claim 1, wherein the V data is output via the reproduction decoder 8. The portable AV device according to any of (1), (2), and (3) above, wherein the AV data transmitted from the communication line 20 is preferentially recorded and reproduced.

(5) A portable AV device B equipped with a memory cartridge (memory) 1 for recording and reproducing audio data and / or video data (AV data) and suitable for carrying, and transmitted via a communication line 20. Received A
While receiving V data, transmission AV data, which is a signal (output signal of the reproduction decoder 8) corresponding to AV data read from the memory cartridge (memory) 1, is transmitted via the communication line 20 (to an external partner). ) A communication means (composed of the reception / transmission buffer 22a and the ADSL adapter 21a) for transmitting, and a (reception / transmission buffer 22)
a, supplied via the switch circuit 24) the reception A
A recording encoder 10 for compressing V data and outputting compressed received AV data to the memory cartridge (memory) 1 (via a memory control circuit 6), and a compressed AV read from the memory cartridge (memory) 1. A reproduction decoder 8 for expanding data (primary expansion) and outputting a signal corresponding to the compressed AV data, and a signal corresponding to the compressed AV data output from the reproduction decoder 8 when the memory reproduction mode is selected. Switching output to the processing unit 11,
When the transmission / reproduction mode is selected, there is provided switching means (composed of switch circuits 2 and 23) for switching and outputting a signal corresponding to the compressed AV data output from the reproduction decoder 8 to the communication means. Portable AV
apparatus.

(6) A portable AV device C equipped with a memory cartridge (memory) 1 for recording and reproducing audio data and / or video data (AV data) and suitable for carrying, and transmitted via a communication line 20. Received A
While receiving the V data, the transmitted AV data, which is a signal (output signal of the reproduction decoder 8) corresponding to the compressed AV data read from the memory cartridge (memory) 1, is transmitted via the communication line 20 (an external partner). To) (reception transmission buffer 22a and ADSL adapter 21)
communication means (comprising a), and a reception / transmission buffer 2
2a, a recording encoder 10 for compressing the received AV data (supplied via the switch circuit 24) and outputting the compressed received AV data to the memory cartridge (memory) 1 (via the memory control circuit 6), A reproduction decoder 8 that expands (primarily expands) the compressed AV data read from the memory cartridge (memory) 1 and outputs a signal according to the compressed AV data, and the reception AV when the reception recording mode is selected. The data recording encoder 10
Output to the memory cartridge (memory) 1 without passing through (through the switch circuits 3 and 4) and read from the memory cartridge (memory) 1 (via the switch circuit 4) when the transmission / reproduction mode is selected. The compressed AV data to be switched is output to the communication means without passing through the reproduction decoder 8 (switch circuit 3,
A portable AV device comprising a switching means (composed of 4, 23).

(7) A portable AV device C equipped with a memory cartridge (memory) 1 for recording / reproducing audio data and / or video data (AV data) and suitable for carrying, which is transmitted via a communication line 20. Received A
While receiving V data, transmission AV data, which is a signal (output signal of the reproduction decoder 8) corresponding to AV data read from the memory cartridge (memory) 1, is transmitted via the communication line 20 (to an external partner). ) A communication means (composed of the reception / transmission buffer 22a and the ADSL adapter 21a) for transmitting, and a (reception / transmission buffer 22)
a, supplied via the switch circuit 24) the reception A
A recording encoder 10 for compressing V data and outputting compressed received AV data to the memory cartridge (memory) 1 (via a memory control circuit 6), and a compressed AV read from the memory cartridge (memory) 1. A reproduction decoder 8 that expands (primarily expands) data and outputs a signal corresponding to the compressed AV data, and an encoder 10 for recording the received AV data when a reception recording mode is selected.
Output to the memory cartridge (memory) 1 without passing through (through the switch circuits 3 and 4) and via the playback decoder 8 (through the switch circuit 2).
Decoded output to the signal processing unit 11 (after 3) (after this,
The receiving AV data being recorded can be monitored via the output analog system circuit 12 and the display 12b), and the memory cartridge (memory) 1 when the transmission reproduction mode is selected.
Compressed AV read from (via switch circuit 4)
A portable AV device comprising: switching means (composed of switch circuits 3 and 4) for switching and outputting data to the communication means without passing through the reproduction decoder 8.

[0017]

Embodiments of the portable AV apparatus of the present invention will be described in detail below with reference to the drawings. 1, FIG. 6, and FIG. 8 are overall block diagrams of the first, second, and third embodiments of the portable AV device of the present invention, respectively. FIG. 2 is a diagram showing the frame structure of the Q channel of TOC information, and FIG. 4 is a flow chart showing an operation procedure in the memory reproduction mode, FIG. 4 is a flow chart showing an operation procedure in the reception reproduction mode, FIGS. 5 and 9 are flow charts showing an operation procedure in the reception recording mode, and FIGS. 7 and 10 are respectively. It is a flowchart which shows the operation procedure in transmission reproduction mode. The same components as those described above are designated by the same reference numerals and the description thereof will be omitted. Hereinafter, first to third embodiments of the portable AV apparatus of the present invention will be described with reference to FIGS.

(First Embodiment) First, the portable type A shown in FIG.
The V device A is composed of the following parts. Reference numeral 1 is a memory cartridge (for example, F-EEPROM cassette), 6 is a memory control circuit, 8 is a reproduction decoder for decoding AV data reproduced from the memory cartridge 1 (duplex expansion, lossless expansion), and 10 is writing AV data. Recording encoder for encoding signals (duplex compression, lossless compression), 11 for signal detection / EFM (Eight
to Fourteen Modulation) A signal processing unit for performing signal demodulation / error detection / correction / MPEG encoding / decoding of DVD data, 12 is an AV signal output analog circuit, 12b
Is a display, 13 is an input analog system circuit for AV signals, 14 is a CPU for controlling the signal processing unit 11, 15 is an operating unit, 16 is a display unit, 16a is an alarm buzzer, 17
Is a CPU for controlling the entire system, 21 is an ADSL adapter, 22 is a reception buffer, and 23 and 24 are switch circuits. 20 is a communication line.

The memory cartridge 1 described above mainly comprises
The memory unit 1a, the package unit 1b, the search unit, and the connector unit (all not shown) are included. The memory unit 1a is configured using a so-called flash memory (for example, F-EEPROM) which is a semiconductor (solid-state) memory. The package unit 1b integrally houses the memory unit 1a, the search unit, and the connector unit. The search unit is an area (so-called user TOC) in which information (address data, song number data, song name data, etc.) indicating an index of AV data stored in the memory unit 1a is written. The connector section writes AV data (compressed AV data) from the apparatus body (recording encoder 10) to the memory section 1a, transmits AV data write / read control signals from the apparatus body (memory control circuit 6) to the search section, In order to read AV data (compressed AV data) from the memory unit 1a to the device body (reproduction decoder 8), connection with the device body is performed.

This portable AV device A is further
It has features such as (1) to (10). (1) ADSL adapter 21 explained in the section of the conventional technology
(Specifications change depending on the type of communication line 20)
And has a communication function (transmission / reception function) of communicating with the partner station via the communication line 20. (2) A reception buffer 22 for temporarily accumulating the AV data received by the ADSL adapter 21 is provided (this reception buffer 22 is illustrated as a reception-only buffer, but it is also used as a reception buffer at the time of reception). A reception transmission buffer (not shown) that is shared as a transmission buffer at the time of transmission may have the same function as the reception buffer). (3) A switch circuit 23 is provided for switching the data input circuit to the signal processing unit 11 between the reproduction decoder 8 side and the ADSL adapter 21 side. (4) A switch circuit 24 is provided for switching the data input circuit to the recording encoder 10 between the signal processing unit 11 side and the reception buffer 22 side. (5) A program that allows the user to selectively set the normal memory recording / reproducing mode and the receiving recording / reproducing mode from the operation unit 15, and the CPU 17 switches the system mode according to each selection mode and executes the control procedure in each mode is provided. ing. (6) The display unit 16 is provided with an alarm buzzer 16a. (7) The signal processor 11 at the next stage of the switch circuit 23 receives the audio signal and the video signal (A) based on the AV data supplied from the memory cartridge 1 via the reproduction decoder 8.
A reproduction signal corresponding to V data, that is, MPEG compressed AV data obtained by double-decompressing so-called double-compressed AV data by the reproduction decoder 8) is subjected to expansion processing by MPEG and output. The video signal is output through the output analog circuit 12 to the display 12b (for example, LCD
It is supplied to a (liquid crystal) display and is output from the video output terminal (VIDEO OUT) to the outside.
The audio signal is output to the outside from the audio output terminal (AUDIOOUT) via the output analog system circuit 12. (8) Playback signals corresponding to AV data output from the memory cartridge 1 can be selectively supplied to the signal processing unit 11, and AV data from the communication line 20 can be preferentially (requested) supplied to the signal processing unit 11 by a request. (By switching the switch circuit 23). (9) In addition to the MPEG compression / expansion signal processing unit 11, a reproduction decoder 8 and a recording encoder 10 are provided, and here, respectively, Huffman coding, lossless compression / expansion (variable rate recording / reproduction, etc.). High efficiency compression / expansion) or compression / expansion by a special method that allows some deterioration (for example, limited to the size of the LCD display 12b (horizontal / vertical direction of reproduced image) resolution and color reproducibility) The data capacity is further constrained by adding compression / expansion by the above method. As a result, for example, where a recording capacity of 200 Mbytes is required (MPEG-compressed AV data) can be recorded at 100 Mbytes, which is half (so-called duplex compression). Or 2
The recording capacity of G bytes can be reduced to 1 G bytes (a short AV software has a capacity of about 100 MB, but a long AV software requires a memory capacity of about 1 GB.
Therefore, a large capacity of 1 Gbyte is required). (10) Input the uncompressed audio signal and video signal from the outside through the analog circuit 13
The signal processing unit 11 is provided with an MPEG encoder for performing MPEG compression, which is the first compression at 1, and is recorded in the memory 1a. It is also possible to connect a video camera and perform snap recording (a still image by inputting an audio signal and a video signal supplied from the video camera). The communication line 20 is a high-speed digital line and is a B-ISDN (Integrate
ted Service Digital Network) is used.

The operation procedure in each mode by the portable AV apparatus A will be described below with reference to the flow charts of FIGS. 3 to 5. (1) Memory reproduction mode (shown in FIG. 3),
A description will be given in the order of (2) reception / reproduction mode (illustrated in FIG. 4), (3) memory recording mode, and (4) reception recording mode (illustrated in FIG. 5).

(1) Memory reproduction mode (operation procedure shown in FIG. 3) First, when the memory reproduction mode is selected and set from the operation unit 15, the CPU 17 changes the connection state of the switch circuit 23 to the reproduction decoder 8 side (a). Side). Next, when there is a reproduction instruction input from the operation unit 15 with the memory cartridge 1 set, the memory control circuit 6 reads the TOC (Table of Contents) information of the memory cartridge 1 (S1, S2).

This TOC information is stored in the memory cartridge 1
Of the program (AV data,
Although it includes table-of-contents information such as music and video numbers and time information, its Q channel has a frame structure as shown in FIG. 2 like the sub-coding of this data area, and represents the information. Control bits (4 bits) and address bits (4 bits) are added prior to the data bits (72 bits). The control bits Q1 to Q4 indicate that when Q2 is "0", it is an audio dedicated memory cartridge.
The case of "1" indicates that the memory cartridge is an audio / video (AV) dedicated memory cartridge. In the former case, it is recorded in the CD format, and in the latter case, it is recorded in the DVD format.

Therefore, the read TOC information is fetched from the reproduction decoder 8 to the CPU 17 via the CPU 14, and the CPU 17 determines the type of the memory cartridge 1 from the contents of the control bits Q1 to Q4.

As a result of the above judgment, the memory cartridge 1
Is recorded in the CD format, the CPU 17 immediately sets the CD flag and the CPU 14
Then, the signal processing unit 11 is set to the CD reproduction processing mode (S3 → S4, S5). Then, the input instruction data is confirmed, and the music number corresponding to the instruction data is displayed on the display unit 1.
6, the memory control is executed to reproduce the designated music data (S6 to S10).

At this time, the reproduction signal is output as a D / A-converted audio signal through [memory cartridge 1 → reproduction decoder 8 → switch circuit 23 → signal processing unit 11 → output analog circuit 12]. Also, after that 1
Every time the reproduction of the music data for the movement is completed, the input instruction data is confirmed, the steps S6 to S10 are executed, and all the instructed music data are decoded and reproduced (S11 → S6 to S10).

On the other hand, the control bit Q of the TOC information
If Q2 is "1" in the determination results of 1 to Q4, the CPU 17 does not immediately determine that the memory cartridge is recorded in the DVD format, but the CPU 17 determines that the memory cartridge 1 is in the DVD format according to the read subheader. Confirm whether or not (S3 → S12,
S13). Furthermore, in this case, even if the subheader indicates that the DVD format is used, the judgment is not fixed,
The first track (only the control code is recorded on the DVD) is read, and the CPU 14 confirms whether the decoded data is MPEG data (S14, S).
15).

The confirmation result is sent from the CPU 14 to C.
If the PU17 is notified and the data is MPEG data, the CPU
17 sets the DVD flag at that stage and the CPU 1
4, the signal processing unit 11 is set to the DVD reproduction processing mode (S16 → S17, S18).

As a result, the DVD of the memory cartridge 1
The format playback signal is [Memory Cartridge 1 →
Reproduction decoder 8 → switch circuit 23 → signal processing unit 11
→ Output analog system circuit 12] and output as an audio signal and a video signal. Since the DVD format is used in this case, the signal processing unit 11 decompresses the MPEG data and outputs it to the output analog system circuit 12.

The reproduction procedure for each chapter from the memory cartridge 1 is the same as in the case of the CD format, and the CPU 17 displays the image of the reproduction chapter and the contents of the music which are instructed and input from the operation unit 15. , Each chapter of the data is reproduced (S19 to S24).

On the other hand, if it is not the DVD format (for example, if it is the CD-ROM format) in step S13, or if the MP format is used in step S16.
If it is not EG data, the CP that received the notification
U17 causes the display unit 16 to display that reproduction is impossible (S13, S16 → S25).

(2) Reception / reproduction mode (operation procedure shown in FIG. 4) First, when the reception / reproduction mode is selected and set from the operation unit 15, the CPU 17 changes the connection state of the switch circuit 23 to the reception buffer 22 side (b side). ). Next, in this reception / reproduction mode, the other station such as the AV software service center is called via the communication line 20. Specifically, when the telephone number of the partner station is input from the operation unit 15 to give a calling instruction, the CP
U17 calls the partner station via the ADSL adapter 21, and the partner station responds to set up the call (S
31). The call setting and the communication related to the next communication protocol are performed at a low transmission rate using the control channel of the communication line 20.

When the call is set, the CPU 17
Causes the ADSL adapter 21 to execute a communication protocol preliminarily agreed with the partner station, and when a data link is established by communication with a regular transmission control code,
The ADSL adapter 21 is ready-set in the high-speed transmission data reception mode (S32 to S34).

On the other hand, the partner station has completed the data transfer preparation at the stage when the data link is established, and the CPU 17 causes the ADSL adapter 21 to transmit the data transfer request code and shift to the start of data reception (S35, S3).
6). In such a service network, the contents of video and music to be served in a pamphlet or the like are often attached to the recipient side with a code number in advance, and in such a case, the operation unit 15 makes a request. It is also possible to input the code number of the image or music, notify the service center side of the code number at the stage of executing the communication protocol, and select the image or music to receive the service.

By the way, the other station transmits the decoded data of the CD or DVD (compressed transmission data in the case of CD, or transmission data in the case of DVD) of the station owned by the other station through the high-speed data channel in the downstream direction (AV software service center, etc. → device A). Compressed transmission data, MPEG data) is transmitted as it is. That is, when the partner station is a service center or the like, the decoded data of the CD or DVD is stored in the library and sent to the communication line 20 after the link is established by the ADSL compatible transmission system installed in the same station. .

Therefore, in the portable AV apparatus A, the CD or DV
The decoded data of D can be received as it is, and the decoded data in the reproduction mode of the memory cartridge 1 (AV recorded in the memory cartridge 1 by the DVD format)
The data can be processed in the same manner as the MPEG data obtained by decoding (high-efficiency expansion).

In the portable AV apparatus A, the switch circuit 23 connects the reception buffer 22 and the signal processing unit 11 as described above based on the reception / reproduction mode setting.
The received data will be transferred to the signal processing unit 11. However, since the data transmission rate of the communication line 20 is constant, the data processing rate of the signal processing unit 11 varies,
The CPU 17 controls the data read / transfer speed from the reception buffer 22 in accordance with the data processing speed of the signal processing unit 11.

After the data reception is started, the partner station is
The TOC data is transmitted prior to the data transmission, but the procedure for the portable AV apparatus A side to determine whether the transmission data is the CD format or the DVD format based on the TOC data, and if the CD format is the CD playback processing mode, Regarding the setting procedure, the procedure for confirming whether or not the transmission data corresponding to the first memory address is MPEG data, and setting the DVD playback processing mode, and the playback procedure for music and the like, the data to be played is the memory cartridge 1 Only the difference between the data and the received data is executed, and it is executed in the same manner as the case of the memory reproduction mode (S38 to S5).
7).

Therefore, in the portable AV apparatus A, the signal processing unit 11 and the output analog system circuit 12 can be shared in the memory reproduction mode and the reception reproduction mode, and the AV data received from the partner station can be reproduced in the reception reproduction mode. Will be possible. In the reception / reproduction mode, if the DVD format is not used (S46) or the MPEG data is not used (S48), the CPU 17 causes the display unit 16 to display a message indicating that reproduction is impossible, and if it is left as it is, the other station In order to continue data transmission, the ADSL adapter 21 sends a data transmission stop request through the control channel of the communication line 20, and after the other station confirms the request, disconnects the connection line this time (S46, S48 → S55 to S5).
7).

(3) Memory recording mode (operation procedure is not shown) In this portable AV apparatus A, when the normal memory recording mode is set from the operation unit 15, the CPU 17 causes the switch circuit 24 to record. Encoder 10 and signal processing unit 1
The input AV data (audio signal and video signal) is input in the connection state 1 (c side).
3 through the signal processing unit 11 (MPEG compression),
While the memory control circuit 6 reads the memory of the signal processing unit 11, the recording signal encoded by the recording encoder 10 (write signal that has been double compressed) is transferred to the memory cartridge 1 and recorded. Further, the CPU 17 sends the AV data to a video input terminal (VIDEO IN).
Since the snap video (still image) input from is recorded in the still image mode and the moving image is recorded in the moving image mode, AV data corresponding to each mode is transmitted based on the DVD standard. be able to. In that case, the signal processing unit 11 sets a processing mode corresponding to the case where the input data is the CD format and the case where the input format is the DVD format, and the details will be described in the next reception recording mode.

(4) Reception / Recording Mode (Operating Procedures Shown in FIG. 5) By the way, the feature of the portable AV apparatus A is that the AV data transmitted from the other station via the communication line 20 in the reception / recording mode is stored in the memory cartridge. There is one point to record. First, when the reception recording mode is selected and set from the operation unit 15, the CPU 17 sets the connection state of the switch circuit 24 to the reception buffer 22 side (d side) and the connection state of the switch circuit 23 to the reception buffer 22 side (b side). To Further, when the reception / recording mode is set, the CPU 17 sets a preliminary reproduction mode to activate the memory cartridge 1 which is preset by the memory control circuit 6, and also the U-TOC (User's Table Of) of the memory cartridge 1 is activated. Conte
nts) data is read and the data is saved in the internal memory of the CPU 17 via the CPU 14 (S61).

Next, similarly to the case of the reception / reproduction mode, the data link is established by setting the call with the partner station and the execution of the communication protocol, and the ADSL adapter 21 is made ready to receive the data transfer request (S62). ). Also,
The DVD is checked after determining the CD format or the DVD format based on the TOC data after starting the data reception, the procedure for setting the CD playback processing mode in the case of the CD format, and whether the first transmission data is MPEG data. The procedure for setting the reproduction processing mode is executed in the same manner as in the reception reproduction mode (S63 to S65,
S72-S75). Incidentally, when it is not the DVD format (S73) or when it is not the MPEG data (S7)
In step 5), the display section 16 displays a message indicating that recording is not possible, and a data transmission stop request is issued to the partner station to disconnect the current line (S85 to S87).

In this reception recording mode, it is confirmed whether the free recording capacity of the memory cartridge 1 is sufficient to record all the AV data transmitted from the partner station (free recording capacity ≧ transmission AV data). Therefore, the free recording capacity of the memory cartridge 1 is obtained as a time-converted value based on the U-TOC data saved in the built-in memory of the CPU 17, and based on the TOC data of the received AV data. Then, it is determined whether or not the free recording capacity of the memory cartridge 1 is sufficient by obtaining the reproduction times of all the data transmitted by the transmission and comparing them (S66, S76).

As a result of the above judgment, the memory cartridge 1
If the free recording capacity of (1) is sufficient (transmission AV data ≦ free recording capacity), the process shifts to the recording of the received data in the memory cartridge 1. First, when the determination result based on the TOC data of the received AV data is the CD format, the reception CD flag is turned ON, the reception CD data in the reception buffer 22 is read, and the recording encoder is set via the switch circuit 24. 10 and records the received CD data on the memory cartridge 1 which is drive-controlled by the memory control circuit 6 in advance (S67, S69).
~ S71). Even in this recording state, the data receiving speed and the recording speed to the memory cartridge 1 are different,
The CPU 17 controls the data read / transfer speed from the reception buffer 22 in accordance with the data recording speed.

Further, the CPU 17 turns on the reception CD flag.
The signal processing unit 11 is set to the CD reproduction processing mode based on the above, and the received CD data read from the reception buffer 22 is transferred to the signal processing unit 11 via the switch circuit 23 connected to the b side, and after processing. Output the audio data for monitoring via the output analog circuit 12 (S6).
8, S70).

On the other hand, when the received data is determined to be in the DVD format (S65 to S75), the received DV is received.
When the D flag is turned ON, the reception D in the reception buffer 22
The VD data is read and transferred to the recording encoder 10,
The MPE is performed by the same operation procedure as in the case of CD format
Memory cartridge 1 for G data (after double compression)
Will be recorded (S77 to S81). Also,
The signal processing unit 11 is set to the DVD reproduction processing mode in order to output the audio / video data for the monitor (S
78).

By the way, the case where the memory cartridge 1 has a free recording capacity capable of recording all received data has been described above (S66 → S67, S76 → S).
77) If the free recording capacity is insufficient (transmission AV data> free recording capacity), the CPU 17 immediately informs the operator by sounding the alarm buzzer 16a provided on the display unit 16. (S66, S76
→ S82).

Further, since the partner station continues the data transmission as it is, the data transmission stop request is sent to the partner station and the connection line is disconnected this time as in the case of the reception / reproduction mode (S83, S84).

Further, there are grades such as MPEG1 and MPEG2 in the data compression / expansion of the MPEG system, but it is also possible to identify these grades and execute the processing corresponding to the grade identified in the signal processing unit 11. is there. In that case, S1 in FIG. 3 described above is used.
3, the grade is identified at the stages of S46 in FIG. 4 and S73 in FIG. 5, and the signal processing unit 11 is set to the processing mode corresponding to the grade. Further, although MPEG2 has a plurality of levels and profiles, it is also possible to extend the above-mentioned identification to the contents thereof and perform processing corresponding to the identified level and the like.

(Second Embodiment) Now, the portable type A shown in FIG.
The V device B adds the switch circuit 2 to the configuration of the portable AV device A shown in FIG.
Is the same as the configuration using the reception / transmission buffer 22a instead of. The switch circuit 2 is switchably connected between the output side of the reproduction decoder 8 and the input side of the reception / transmission buffer 22a. The same components as those described above are designated by the same reference numerals, and the description thereof will be omitted.

The portable AV apparatus B, as shown in FIG.
It consists of the following parts. 1 is a memory cartridge, 2, 23 and 24 are switch circuits, 6 is a memory control circuit, 8 is a reproduction decoder, 10 is a recording encoder, 1
1 is a signal processing unit, 12 is an output analog system circuit, 12b is a display, 13 is an input analog system circuit, 14 and 17
Is a CPU, 15 is an operation unit, 16 is a display unit, 16a is an alarm buzzer, 21 is an ADSL adapter, and 22a is a reception / transmission buffer. 20 is a communication line.

The features of the portable AV apparatus B having the above-mentioned configuration are that (1) memory reproduction mode, (2) reception reproduction mode, (3) memory recording mode, (4) reception recording mode, and (5) A memory reproduction transmission mode is newly provided.

Hereinafter, (1) memory reproduction mode, (2) reception / reproduction mode in the portable AV apparatus B,
(3) Memory recording mode and (4) reception recording mode are described in the above-mentioned portable AV device A ((1) memory reproduction mode, (2) reception reproduction mode, (3) memory recording mode, (4) reception Since it is almost the same as the recording mode),
Only the different points will be described below, and the operation procedure in (5) transmission reproduction mode will be described with reference to the flowchart in FIG. 7.

(1) Memory reproduction mode When the memory reproduction mode is selected and set from the operation unit 15,
The CPU 17 sets the connection state of the switch circuit 23 to the reproduction decoder 8 side (a side) and sets the connection state of the switch circuit 2 to off (not to supply the output signal of the reproduction decoder 8 to the reception / transmission buffer 22a). Set to). The connection state of the switch circuit 24 is set to a floating state (a state in which neither the c side nor the d side is connected). The following description is for the portable AV device A
The explanation is omitted because it is the same as the explanation of the memory reproduction mode in (1).

(2) Reception / reproduction mode When the memory reproduction mode is selected and set from the operation unit 15,
The CPU 17 sets the connection state of the switch circuit 23 to the reception / transmission buffer 22a side (b side) and sets the connection state of the switch circuit 2 to off (not to supply the output signal of the reproduction decoder 8 to the reception / transmission buffer 22a). Set to). The connection state of the switch circuit 24 is set to a floating state (a state in which neither the c side nor the d side is connected). The following explanation is for portable AV
The explanation is omitted because it is the same as the explanation of the (2) reception / reproduction mode in the device A.

(3) Memory recording mode When the memory recording mode is selected and set from the operation unit 15,
The CPU 17 sets the connection state of the switch circuit 24 to the connection state of the recording encoder 10 and the signal processing unit 11 (c side),
The connection state of the switch circuit 2 is set to off. The following description is the same as the description of (3) Memory recording mode in the portable AV device A, and thus the description thereof is omitted.

(4) Reception recording mode When the reception recording mode is selected and set from the operation unit 15, C
The PU 17 sets the connection state of the switch circuit 24 to the reception / transmission buffer 22a side (d side) and the connection state of the switch circuit 23 to the reception / transmission buffer 22a side (b side). The following description is the same as the description of (4) reception / recording mode in the portable AV apparatus A, and thus the description thereof is omitted.

(5) Transmission / reproduction mode (shown in FIG. 7) First, the CPU 17 calls the partner station to be transmitted via the communication line 20. Specifically, when the telephone number of the partner station is input from the operation unit 15 to give a calling instruction, the CPU 17 causes AD
A call is made to the partner station via the SL adapter 21, and the call is set when the partner station responds (S91). The call setting and the communication related to the next communication protocol are performed at a low transmission rate using the control channel of the communication line 20.

When the call is set, the CPU 17
Causes the ADSL adapter 21 to execute a communication protocol preliminarily agreed with the partner station, and when a data link is established by communication with a regular transmission control code,
The ADSL adapter 21 is ready-set to the transmission mode for high-speed transmission data (S92 to S94).

On the other hand, when the data link with the partner station is established, the CPU 17 sends a data transmission request code from the ADSL adapter 21 to the partner station, checks whether there is a data reception request from the partner station, Data transmission is started when there is a data reception request (S95, S9).
6). In this way, the partner station can directly receive the decoded data of the AV data recorded in the memory cartridge 1 in the CD or DVD format. In such a network, the content of video or music to be transmitted is often given a code number to notify the other party,
In such a case, the desired video or music code number is input from the operation unit 15, and the code number is notified to the partner station at the execution stage of the communication protocol so that the video or music to be transmitted can be selected. Is also possible.

Following this, the CPU 17 sets the connection state of the switch circuit 2 from off to on (reproduction decoder 8
Output signal is set to be supplied to the reception / transmission buffer 22a). The connection state of the switch circuit 24 is set to a floating state (a state in which neither the c side nor the d side is connected). Next, when there is a reproduction instruction input from the operation unit 15 with the memory cartridge 1 set, the memory control circuit 6 reads the TOC information of the memory cartridge 1.

Therefore, the read TOC information is fetched from the reproduction decoder 8 to the CPU 17 via the CPU 14, and the CPU 17 determines the type of the memory cartridge 1 from the contents of the control bits Q1 to Q4.

As a result of the above judgment, the memory cartridge 1
Is recorded in the CD format, the CPU 17 immediately sets the CD flag and the CPU 14
The signal processing unit 11 is set to the CD reproduction processing mode by. Then, after confirming the input instruction data and displaying the music number or the like corresponding to the instruction data on the display unit 16, memory control is executed to reproduce the instruction music data (S9).
7).

At this time, the reproduction signal is output to the memory cartridge 1 → reproduction decoder 8 → switch circuit 2 → reception / transmission buffer 22a → ADSL adapter 21 (S9).
8).

After that, every time the reproduction of the music data for one chapter is completed, the input instruction data is confirmed and the procedure as described above is confirmed (the input instruction data is confirmed and the music number corresponding to the instruction data is displayed. After displaying on the section 16, the procedure of executing memory control to reproduce the designated music data) is executed, and all the designated music data are decoded and reproduced and output to the analog circuit 12 and the ADSL adapter 21. It will go (S99).

On the other hand, the control bit Q of the TOC information
If Q2 is "1" in the determination results of 1 to Q4, the CPU 17 does not immediately determine that the memory cartridge is recorded in the DVD format, but the CPU 17 determines that the memory cartridge 1 is in the DVD format according to the read subheader. Check whether or not. Further, in this case, even if the sub-header indicates that the DVD format is used, the determination is not confirmed, and the first track (only the control code and the like is recorded on the DVD) is read, and the CP
It is confirmed by U14 whether or not the decoded data is MPEG data.

The confirmation result is sent from the CPU 14 to C.
If the PU17 is notified and the data is MPEG data, the CPU
17 sets the DVD flag at that stage and the CPU 1
4, the signal processing unit 11 is set to the DVD reproduction processing mode. Then, after confirming the input instruction data and displaying the number or the like corresponding to the instruction data on the display unit 16, the memory control is executed to reproduce the instruction music data (S9).
7).

As a result, the DVD of the memory cartridge 1
The format reproduction signal is the memory cartridge 1 → reproduction decoder 8 → switch circuit 2 → reception transmission buffer 2
2a → Output to the ADSL adapter 21 (S98).

Further, thereafter, the reproduction procedure for each chapter from the memory cartridge 1 is the same as in the case of the CD format, and the CPU 17 displays the image of the reproduction chapter or the contents of the music which is instructed and input from the operation unit 15. Meanwhile, each chapter is reproduced (S99).

On the other hand, in the above-mentioned procedure for determining whether or not it is the DVD format, if it is not the DVD format (for example, if it is the CD-ROM format) or MPEG is determined in step S16.
If it is not data, the CPU 1 that has received the notification
7 indicates that reproduction is impossible on the display unit 16.

When the transmission of all AV data is completed, C
The PU 17 causes the display unit 16 to display the end of reproduction, and sends a signal to the other station indicating the end of data transmission to A
A data transmission stop request is sent through the control channel of the communication line 20 via the DSL adapter 21. After the other station confirms it, the connection line is disconnected this time (S10
0). In this way, the portable AV apparatus B should execute (5) memory reproduction transmission mode in addition to (1) memory reproduction mode, (2) reception reproduction mode, (3) memory recording mode, (4) reception recording mode. You can

(Third Embodiment) Now, the portable type A shown in FIG.
The V device C has a configuration in which the switch circuits 3 and 4 are added to the configuration of the portable AV device A shown in FIG. 1 and the reception transmission buffer 22a is used instead of the reception buffer 22 thereof. The switch circuit 3 is switched and connected between one terminal of the reception / transmission buffer 22a and the input side of the reproduction decoder 8. Further, the switch circuit 4 is switchably connected between the memory cartridge 1 and the input side of the reproducing decoder 8. The same components as those described above are designated by the same reference numerals, and the description thereof will be omitted.

The portable AV apparatus C, as shown in FIG.
It consists of the following parts. 1 is a memory cartridge, 3, 4, 23 and 24 are switch circuits, 6 is a memory control circuit, 8 is a reproduction decoder, 10 is a recording encoder, 11 is a signal processing unit, 12 is an output analog circuit, 1
2b is a display, 13 is an input analog circuit, 1
4, 17 is a CPU, 15 is an operation unit, 16 is a display unit, 16
a is an alarm buzzer, 21 is an ADSL adapter, 22
a is a reception / transmission buffer. 20 is a communication line.

The features of the portable AV apparatus C having the above-mentioned configuration are that (1) memory reproduction mode, (2) reception reproduction mode, (3) memory recording mode, (4) reception recording mode,
(5) It has a memory reproduction transmission mode.

Hereinafter, (1) memory reproduction mode, (2) reception / reproduction mode in the portable AV apparatus C,
(3) Memory recording mode and (4) reception recording mode are described in the above-mentioned portable AV device A ((1) memory reproduction mode, (2) reception reproduction mode, (3) memory recording mode, (4) reception Since it is almost the same as the recording mode),
Only the different points will be described below, and the operation procedure in the (5) transmission reproduction mode will be described with reference to the flowchart of FIG.

(1) Memory reproduction mode When the memory reproduction mode is selected and set from the operation unit 15,
The CPU 17 sets the connection state of the switch circuit 4 to the reproduction decoder 8 side (h side) and the connection state of the switch circuit 23 to the reproduction decoder 8 side (a side), respectively. The connection state of the switch circuit 3 is set to a floating state (a state where neither the e side nor the f side is connected), and the connection state of the switch circuit 24 is set to a floating state (a state where neither the c side nor the d side is connected). It The following description is for portable type A
The explanation is omitted because it is similar to the explanation of (1) memory reproduction mode in the V device A.

(2) Reception / reproduction mode When the memory reproduction mode is selected and set from the operation unit 15,
The CPU 17 sets the connection state of the switch circuit 23 to the reception / transmission buffer 22a side (b side). The connection state of the switch circuit 3 is set to a floating state, the connection state of the switch circuit 4 is set to a floating state (a state in which neither the g side nor the h side is connected), and the connection state of the switch circuit 24 is set to a floating state. The following explanation
The explanation is omitted because it is similar to the explanation of (2) reception and reproduction mode in the portable AV apparatus A.

(3) Memory recording mode When the memory recording mode is selected and set from the operation unit 15,
The CPU 17 sets the connection state of the switch circuit 24 to the connection state (c side) of the recording encoder 10 and the signal processing unit 11. The connection state of the switch circuit 23 is set to a floating state (a state in which neither the a side nor the b side is connected), the connection state of the switch circuit 3 is set to the floating state, and the connection state of the switch circuit 4 is set to the floating state. The following description is the same as the description of (3) Memory recording mode in the portable AV device A, and thus the description thereof is omitted.

(4) Reception recording mode When the reception recording mode is selected and set from the operation unit 15, C
The PU 17 connects the connection state of the switch circuit 24 to the reception / transmission buffer 22a side (d side), the connection state of the switch circuit 23 to the reproduction decoder 8 side (a side), and the connection state of the switch circuit 4 to the recording encoder 10 side. Set to (g side) respectively. The switch circuit 3 is set in a floating state. The encoding function of the recording encoder 10 is set by the CPU 1
It can be controlled to pass through from 4. The following description is the same as the description of (4) reception / recording mode in the portable AV apparatus A, and thus the description thereof is omitted.

(5) Transmission / reproduction mode (shown in FIG. 10) When the transmission / reproduction mode is selected and set from the operation unit 15, C
The PU 17 connects the switch circuit 23 to the reproducing decoder 8 side (a side), the switch circuit 4 to the memory cartridge 1 side (h side), and the switch circuit 3 to the reproducing encoder 8 side (f side). Set each to. The switch circuit 24 is set in a floating state. This allows
The AV data reproduced from the memory cartridge 1 can be directly supplied to the reception / transmission buffer 22a (that is, the AV data reproduced from the memory cartridge 1 does not pass through the reproduction encoder 8 and is switched circuit 4 → switch circuit). By being supplied to the reception / transmission buffer 22a via No. 3, the reproduction encoder 8 does not perform the double-expansion and the double-compressed AV data can be directly supplied to the reception / transmission buffer 22a). At the same time, it is possible to monitor the AV data supplied to the reception / transmission buffer 22a that is transmitting / reproducing (that is, the AV data reproduced from the memory cartridge 1 is switched from the switch circuit 4 to the reproduction encoder 8). → Switch circuit 23 → Signal processing unit 11 → Output It is possible to monitor the AV data transmitted by being supplied to the display 12b via the analog circuit 12).

In response to this, the CPU 17 causes the communication line 20
Call the other station to send via. Specifically, when the telephone number of the other station is input from the operation unit 15 and a call instruction is given, the CPU 17 calls the other station via the ADSL adapter 21, and the other station responds, whereby call setting is completed. It is done (S111). The call setting and the communication related to the next communication protocol are performed at a low transmission rate using the control channel of the communication line 20.

When the call is set, the CPU 17
Causes the ADSL adapter 21 to execute a communication protocol preliminarily agreed with the partner station, and when a data link is established by communication with a regular transmission control code,
The ADSL adapter 21 is ready-set to the transmission mode for high-speed transmission data (S112 to S114).

On the other hand, when the data link with the partner station is established, the CPU 17 sends a data transmission request code from the ADSL adapter 21 to the partner station, checks whether there is a data reception request from the partner station, Data transmission is started when there is a data reception request (S115, S
116). In this way, the other station can receive the non-decoded data of the AV data recorded in the memory cartridge 1 in the CD or DVD format and directly record it without encoding it by itself. In such a network, the content of video or music to be transmitted is often given a code number to notify the other party. In such a case, the code of the video or music desired from the operation unit 15 is sent. It is also possible to input the number, notify the other station of the code number at the execution stage of the communication protocol, and select the image or music to be transmitted.

Subsequently, when a reproduction instruction is input from the operation unit 15 with the memory cartridge 1 set,
The memory control circuit 6 controls the TO of the memory cartridge 1.
Read C information.

Therefore, the read TOC information is fetched from the reproduction decoder 8 to the CPU 17 via the CPU 14, and the CPU 17 determines the type of the memory cartridge 1 from the contents of the control bits Q1 to Q4.

As a result of the above judgment, the memory cartridge 1
Is recorded in the CD format, the CPU 17 immediately sets the CD flag and the CPU 14
The signal processing unit 11 is set to the CD reproduction processing mode by. Then, after confirming the input instruction data and displaying the song number or the like corresponding to the instruction data on the display unit 16, memory control is executed to reproduce the instructed song data (S11).
7).

At this time, one of the AV data corresponding to the CD format reproduced from the memory cartridge 1 is output to the switch circuit 4 → switch circuit 3 → reception / transmission buffer 22a → ADSL adapter 21 → communication line 20, and the other one. Is output to the switch circuit 4 → reproduction decoder 8 → switch circuit 23 → signal processing unit 11 → output analog system circuit 12 → audio monitor device (not shown) (S118).

After this, every time the reproduction of the music data for one movement is completed, the input instruction data is confirmed and the procedure as described above is confirmed (the input instruction data is confirmed and the music number corresponding to the instruction data is displayed on the display unit. 16 is displayed, then memory control is executed to reproduce the designated music data), all of the designated music data are decoded / reproduced and output to the output analog system circuit 12 and the ADSL adapter 21. This is the case (S119).

On the other hand, the control bit Q of the TOC information
If Q2 is "1" in the determination results of 1 to Q4, the CPU 17 does not immediately determine that the memory cartridge is recorded in the DVD format, but the CPU 17 determines that the memory cartridge 1 is in the DVD format based on the read subheader. Check whether or not. Further, in this case, even if the sub-header indicates that the DVD format is used, the determination is not confirmed, and the first track (only the control code and the like is recorded on the DVD) is read, and the CP
It is confirmed by U14 whether or not the decoded data is MPEG data.

Then, the confirmation result is sent from the CPU 14 to C.
If the PU17 is notified and the data is MPEG data, the CPU
17 sets the DVD flag at that stage and the CPU 1
4, the signal processing unit 11 is set to the DVD reproduction processing mode. Then, after confirming the input instruction data and displaying the number or the like corresponding to the instruction data on the display unit 16, the memory control is executed to reproduce the instruction data (S117).

As a result, one of the AV data corresponding to the DVD format reproduced from the memory cartridge 1 is output to the switch circuit 4 → switch circuit 3 → reception / transmission buffer 22a → ADSL adapter 21 → communication line 20, and the other one. Is output to the switch circuit 4 → reproduction decoder 8 → switch circuit 23 → signal processing unit 11 → output analog circuit 12 → display 12b (S11).
8).

Further, thereafter, the reproduction procedure for each chapter from the memory cartridge 1 is the same as in the case of the CD format, and the CPU 17 displays the image of the reproduction chapter or the content of the music which is instructed and input from the operation unit 15. Meanwhile, each chapter is reproduced (S119).

On the other hand, in the above-mentioned procedure for determining whether or not it is the DVD format, if it is not the DVD format (for example, if it is the CD-ROM format), or in step S16 MPEG
If it is not data, the CPU 1 that has received the notification
7 indicates that reproduction is impossible on the display unit 16.

When transmission of all AV data is completed, C
The PU 17 causes the display unit 16 to display the end of reproduction, and sends a signal to the other station indicating the end of data transmission to A
A data transmission stop request is sent through the control channel of the communication line 20 via the DSL adapter 21. After the other station confirms it, disconnect this connection (S12
0). In this way, the portable AV apparatus C can execute (1) memory reproduction mode, (2) reception / reproduction mode, (3) memory recording mode, (4) reception / recording mode, and (5) memory reproduction / transmission mode. .

[0095]

According to the first aspect of the present invention, the compressed and transmitted AV data distributed from the communication line and the other external device (for example, the output side of the video camera, and the uncompressed AV from here) are used. A device that reproduces (transmits) data from here by connecting to an external device that outputs data
It is possible to selectively reproduce V data and AV data stored in a memory (for example, a memory cartridge) which is detachably attached to the main body of the apparatus or reproduces AV data distributed through a communication line. It is possible to reproduce by giving priority to the reproduction of this memory or an external device, and further, if this memory is a solid-state memory, it can be made into a thin card-like structure, so that it is integrated with the main body of the device (for example, built-in). , Which can be detachably stored in the main body of the device), and can provide a lightweight and compact portable AV device, and further, receive AV data transmitted from the other station via the communication line. However, since the built-in hardware is shared in the normal memory playback mode and the reception playback mode, the received AV data can be played back. It is possible to realize a network construction of such users can enjoy a wide range of AV software by a simple operation while utilizing E A resource efficiently. According to the present invention as set forth in claim 2, compressed and transmitted AV data distributed from a communication line, other external devices (for example, an output side of a video camera, and uncompressed AV from here)
AV data which is reproduced (transmitted) from here by being connected to an external device to which data is output, for example, is removable from the device main body or selectively recordable in a built-in memory (for example, a memory cartridge). Also, it is possible to record AV data distributed through a communication line by interrupting the recording of this memory or an external device, and further, if this memory is a solid-state memory, it is a thin card-like one. Since it can be integrated with the device body (for example, built-in, can be detachably accommodated in the device body), it is possible to provide a lightweight and small portable AV device. Receives AV data transmitted from the other station via, and receives it while sharing the built-in hardware in normal memory recording mode and reception recording mode. The AV data because it can be played back was,
It is possible to efficiently use hardware resources and realize a network construction in which a user can enjoy a wide range of AV software with a simple operation. According to the present invention of claim 3, in addition to the above-described effect of the invention of claim 2, the free recording capacity of the memory can be detected prior to the recording of the AV data in the memory.
You can detect the lack of recording capacity when recording data,
It is possible to prevent a failure when recording AV data in the memory. The present invention according to claim 4 provides, in addition to the above-described effects of the inventions according to claim 1, claim 2 and claim 3, for example, in addition to a signal processing unit 11 for compression / expansion by MPEG. The recording encoder 10 includes a reproduction decoder 8 and a recording encoder 10, and at the time of recording, the recording encoder 10 performs Huffman coding, lossless compression such as variable rate recording, or compression by a special method that allows a slight deterioration (double compression). Compression, for example, by performing compression limited to the size of the LCD display 12b (horizontal / vertical direction of the reproduced image) and a method specialized for color reproducibility, thereby reducing the amount of data to be recorded without deterioration of information. It is possible to make it much smaller (the memory capacity can be reduced to about 1/2 compared to the conventional single compression type), and the playback decoding In H.8, AV data reproduced by Huffman decoding, lossless expansion such as variable rate reproduction, or a process (double expansion) complementary to the recording of expansion by a special method that allows a slight deterioration. Conventional (single) without degrading
Compared to decompression / compression processing, for example, the data capacity is about 1 /
Since it can be set to 2, there is an effect that it is possible to record and reproduce AV data that is twice as large as the conventional one if the memories have the same capacity. The present invention according to claim 5 receives AV data transmitted from a partner station via a communication line, and
The AV data to be reproduced from the memory can be transmitted through a communication line, and at the time of this reception / transmission, a new function (transmission / reproduction) can be obtained by partially modifying the circuit configuration used for reception. Mode can be installed, AV data can be transmitted and received via a communication line without causing a significant increase in cost, which makes efficient use of hardware resources and simplifies user operation. You can build a network where you can enjoy a wide range of AV software. Further, in the transmission / reproduction mode, since the AV data can be transmitted to the partner station by confirming the contents of the memory and designating the data to be transmitted in advance, the communication path can be effectively utilized and the recorded data can be quickly and accurately recorded. There is an effect that various transmissions can be easily performed. According to a sixth aspect of the present invention, when the reception recording mode is selected, the reception AV data is switched and output to the memory without passing through the encoder, and when the transmission reproduction mode is selected, the compressed AV data read from the memory is output. Since the switching means for switching and outputting to the communication means is provided without going through the decoder, in addition to the above-described effect of the invention of claim 5, when the reception reproduction mode is selected, for example, the transmission AV data is transmitted. Since even so-called duplex compressed AV data can be transmitted without being duplex expanded, the amount of communication can be significantly reduced as compared with data that is duplex expanded and transmitted.
It is possible to perform quick and accurate high-density AV transmission of transmitted AV data. According to the invention of claim 7, in addition to the effect of the invention of claim 6, AV data to be transmitted can be monitored when the transmission / reproduction mode is selected, so that any inconvenience during transmission can be immediately discovered. If an inconvenience occurs, this transmission can be immediately stopped and the AV data can be transmitted again, so that the reliability of the sender at the time of transmission can be secured.

[Brief description of drawings]

FIG. 1 is an overall block diagram of a first embodiment of a portable AV device of the present invention.

FIG. 2 is a diagram showing a frame structure of a Q channel of TOC information.

FIG. 3 is a flowchart showing an operation procedure in a memory reproduction mode.

FIG. 4 is a flowchart showing an operation procedure in a reception / reproduction mode.

FIG. 5 is a flowchart showing an operation procedure in a reception recording mode.

FIG. 6 is an overall block diagram of a second embodiment of the portable AV device of the present invention.

FIG. 7 is a flowchart showing an operation procedure in a transmission / reproduction mode.

FIG. 8 is an overall block diagram of a third embodiment of the portable AV device of the present invention.

FIG. 9 is a flowchart showing an operation procedure in a reception recording mode.

FIG. 10 is a flowchart showing an operation procedure in a transmission / reproduction mode.

[Explanation of symbols]

 1 Memory Cartridge (Memory) 2, 3, 4, 23, 24 Switch Circuit (Switching Means) 6 Memory Control Circuit 8 Reproduction Decoder (Decoder) 10 Recording Encoder (Encoder) 11 Signal Processor 12 Output Analog Circuit 12b Display 13 input analog system circuit 14, 17 CPU 15 operation unit 17 CPU 20 communication line 21, 21a ADSL adapter 22 reception buffer (reception AV data output means) 22a reception transmission buffer A, B, C portable AV device

Claims (7)

[Claims] 1. A portable AV apparatus equipped with a memory for reproducing AV data and suitable for carrying, the communication means receiving at least received AV data transmitted through a communication line, and read from the memory. Playback mode selection means for selecting one of a memory playback mode for outputting a playback signal according to AV data and a reception playback mode for outputting a playback signal according to the received AV data, and a data playback processing speed. In response, the received AV data output means variably outputs the received AV data, and the AV output from the memory when the memory reproduction mode is selected.
And a switching means for switching and outputting a reproduction signal according to the data and for outputting a reproduction signal according to the AV data output from the reception AV data output means when the reception reproduction mode is selected. AV device. 2. A portable AV apparatus equipped with a memory for recording AV data and suitable for carrying, comprising: a communication means for receiving at least received AV data transmitted via a communication line; and a communication means other than this communication means. Recording mode for selecting one of a memory recording mode for recording AV data supplied from the means in the memory and a reception recording mode for recording received AV data transmitted via the communication line in the memory Selection means, reception AV data output means for variably outputting the reception AV data according to the data recording processing speed, and switching of AV data supplied from means other than the communication means to the memory when the memory recording mode is selected. When the reception / reproduction mode is selected, the recording signal corresponding to the AV data output from the reception AV data output means is output to the memory. A portable AV device, comprising: a switching unit for switching output. 3. When the reception recording mode is selected, a first detecting means for detecting an empty recording capacity of the memory, and an AV transmitted based on TOC information transmitted from a partner station prior to communication transmission of AV data. Second detection means for detecting the data amount of data, and notification means for notifying the fact that the data amount detected by the second detection means is larger than the free recording capacity detected by the first detection means are provided. 3. The method according to claim 2, wherein
The portable AV device described. 4. An encoder for compressing at least received AV data to output compressed received AV data, and a decoder for expanding the compressed received AV data to output received AV data, wherein the encoder is used during recording. 3. The compressed reception AV data is recorded in the memory by the above, and the compressed reception AV data output from the memory is output through the decoder during reproduction. Portable AV described in 3.
apparatus. 5. A portable AV device equipped with a memory for recording and reproducing AV data and suitable for carrying, which receives received AV data transmitted via a communication line and is read from the memory. Communication means for transmitting the transmission AV data, which is a signal according to the above, through the communication line, an encoder for compressing the reception AV data and outputting the compressed reception AV data to the memory, and read from the memory. A decoder that decompresses the compressed AV data and outputs a signal corresponding to the compressed AV data, and a signal that corresponds to the compressed AV data output from the decoder when the memory reproduction mode is selected is output to the signal processing unit for transmission. Switching means for switching and outputting a signal corresponding to the compressed AV data output from the decoder to the communication means when the reproduction mode is selected. A portable AV device characterized by being provided. 6. A portable AV apparatus equipped with a memory for recording and reproducing AV data, which is suitable for carrying, and which receives compressed AV data transmitted via a communication line and reads the compressed AV data from the memory. Communication means for transmitting transmission AV data, which is a signal corresponding to the data, via the communication line, an encoder for compressing the reception AV data and outputting the compressed reception AV data to the memory, and a compression read from the memory A decoder that expands AV data and outputs a signal according to the compressed AV data, and, when a reception recording mode is selected, the reception AV data is switched to the memory without the encoder and output, and a transmission reproduction mode is selected. At this time, the compressed AV data read from the memory is switched to the communication means without passing through the decoder. A portable AV device, comprising: a switching unit that applies force. 7. A portable AV apparatus equipped with a memory for recording and reproducing AV data and suitable for carrying, which receives received AV data transmitted via a communication line and is read from the memory. Communication means for transmitting the transmission AV data, which is a signal corresponding to the above, through the communication line, an encoder for compressing the reception AV data and outputting compressed reception AV data to the memory, and a compression AV read from the memory. A decoder that expands data and outputs a signal according to the compressed AV data, and, when a reception recording mode is selected, directly outputs the reception AV data to the memory without passing through the encoder, and also through the decoder. The compressed AV data read out from the memory when the transmission / reproduction mode is selected. And a switching means for switching and outputting the data to the communication means without passing through the decoder.