JPH0417478A - Recording and reproducing device - Google Patents

Abstract

PURPOSE:To utilize a large capacity video memory and a recording medium effectively by inputting and outputting between a 2nd track and the video memory and inputting and outputting directly digital information between the video memory and an external device. CONSTITUTION:An audio processor 16 is connected to a video memory 10 via a buffer 14 to access the video memory 10 and to fetch prescribed information. The audio processor 16 is connected to a system controller 25 and how to use a digital audio information channel is instructed from a control signal inputted via a signal line 13. According to the instruction, when the digital audio information channel has a capacity of four audio channels, the audio processor 16 records audio information onto two channels of an audio track of a recording medium 11 and records still picture information on two remaining channels.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a recording and reproducing device that records and reproduces video information and other information, such as digital audio information, using the same recording medium. .

(Prior Art) A technique for recording and reproducing video information and digital audio information using the same recording medium has been put to practical use in VTRs, video disc devices, and the like. In such conventional recording and reproducing devices, the video information channel and the digital audio information channel are completely independent.

Therefore, even if a video information channel has a large capacity video memory, that video memory is only used to process the video information recorded and played back via the video information channel, and the hardware is not used effectively. Not utilized.

On the other hand, digital audio information channels are provided so that four or more channels of audio information can be recorded and reproduced simultaneously, but two channels are often sufficient depending on the application of the device. In such a case,
The remaining digital audio information channels were not being utilized effectively.

(Problems to be Solved by the Invention) As mentioned above, in the conventional technology, the large-capacity video memory provided for the video information channel is not effectively utilized. There is also a problem in the voice information channels that, when fewer channels are needed, the remaining channels are not utilized effectively.

SUMMARY OF THE INVENTION An object of the present invention is to provide a recording and reproducing apparatus that can effectively utilize a large capacity video memory and a digital audio channel and expand its uses.

[Structure of the Invention] (Means for Solving the Problems) A recording and reproducing device of the present invention includes a video memory having a capacity for at least one frame, and recording video information on a first track of a recording medium via the video memory. a first recording circuit that reproduces video information recorded on a first track of a recording medium via a video memory; and a first playback circuit that reproduces video information recorded on a first track of a recording medium via a video memory; a second recording circuit that records at least one of still image information formed by the read moving image information in a plurality of channels of a second track of a recording medium; and a second recording circuit that reproduces information recorded in a plurality of channels of the second track. , a recording and reproducing apparatus that includes a second reproducing circuit that outputs a reproducing signal, and a circuit that writes the reproducing signal from the second track of the recording medium into a video memory.

(Function) According to the present invention, a recording and reproducing apparatus records and reproduces video information on a first track of a recording medium via a video memory, and records and reproduces, for example, digital audio information on a second track. By inputting and outputting information between the N2 track and the video memory, and by directly inputting and outputting digital information between the video memory and the outside, it is possible to input and output digital information to multiple second channels, which are digital audio channels. can record not only audio information input from the outside via the input terminal, but also information such as still image information created via the video memory. Therefore, for example, if the digital audio information channel has the capacity for 4 audio channels, it is possible to record digital audio information on 2 channels and record other information such as still images on the remaining 2 channels, resulting in a large capacity Effective use of video memory and recording media has been achieved,
The uses of the device are expanded.

Further, the second channel used as a digital audio information channel, for example, can record not only audio information input from the outside via an input terminal, but also information such as still image information created via a video memory. Furthermore, since digital information can be input and output directly to and from the video memory, digital still image information and other information provided from the outside can also be recorded and reproduced. in this case,
Since the contents of the video memory can be output as video information, the contents can also be checked.

(Example) In FIG. 1, video input terminal 1 to which a video signal is input
is connected to the video processor 2. The video processor 2 processes the input video signal and exchanges it for a signal suitable for recording on the recording medium 11.

The video processor 2 is connected to one terminal of the bach arrow via an address bus 3, a control bus 4, and a data bus 5. The other terminal of the Bacharo is connected to the video memory 1 via an address bus 7, a control bus 8 and a data bus 9.
Connected to 0. This video memory 10 appropriately distributes the pixels constituting the video information from the Bacharo on a two-dimensional planar recording medium such as a tape or disk, and suppresses the disturbance of the video information due to media defects. Read/read information.

The video processor 2 will be explained in detail with reference to FIG.

A video input terminal 1 is connected to an A/D converter 101 for converting an input video signal into digital video information.

The output terminal of A/D converter Lot is Bacher 102.11
4, the data bus 5 is connected to the video memory 10 via the buffer 6 and data bus 9 shown in FIG. Video memory 10
The video information read from the is taken into the video processor 2 via the data bus 9 and the buffer 6, and the video information read from the buffer 1
14, is input to the D/A converter 104 via the buffer 103.

D/A converter 104 converts digital video information into an analog video signal. This analog video signal is transmitted to the modulation circuit 1
05, is input to the recording head (40) via the amplifier 10B and the signal line 12, and is recorded on the video information channel (first channel) on the recording medium 11, for example, on the video track shown in FIG. At this time, the buffer 6 is rendered conductive by a control signal input from the system controller 25 via the signal line 13, and the buffer 14 is rendered non-conductive.

The memory controller 113 connects the video memory 1 via the address bus 3, control bus 4, and buffer 6.
It is provided to supply address data and various control signals to 0.

The audio input terminal 15 is connected to the audio processor 16 and inputs the input audio signal to the audio processor 16. The audio processor 16 processes the input audio signal, converts it into a signal suitable for recording on the recording medium 11, and sends this converted signal to the digital audio information channel (second channel) of the recording medium 11 via the recording head. For example, the PC shown in Figure 4
Record on the M audio track.

The audio processor 16 will be described in detail with reference to FIG.

Audio input terminal 15 is connected to A/D converter 201 to convert input audio information into a digital signal. The output terminal of A/D converter 201 is connected to multiplexer 205 via buffers 202 and 203 for combining the digital audio signal with subcode data from subcode processing circuit 204.

The subcode data is additional information including data indicating whether the manually input data is video or audio.

The output terminal of the multiplexer 205 is the error correction encoder 2.
06, a modulation circuit 207, and an amplifier 208. The error correction encoder 208 converts the composite signal into Reed-Solomon code data, for example.

Modulation circuit 207 modulates the code data and outputs a modulated signal to amplifier 208. The modulated signal amplified by the amplifier 208 is recorded on the audio information channel on the recording medium 11 via the signal line 17.

In the above configuration, the video information stored in the video memory IO can be recorded as still image information on a part of the digital information channel of the recording medium 11 in the following manner.

System controller 25 is connected to buffers 6 and 14 via signal line 13 and outputs control signals to these buffers 6 and 14. The control signal causes the buffer 6 to be rendered non-conductive and the buffer 14 to be rendered conductive at a predetermined timing.

The audio processor 16 is connected to the video memory 10 via an address bus 18, a control bus 19, a data bus 20, a buffer 14, an address bus 7, a control bus 8, and a data bus 9, and accesses this video memory 1O and stores data in this memory. Import predetermined information from. The audio processor 16 is connected to a system controller 25 from which it also receives instructions on how to use the digital audio information channel by means of control signals input via signal line 13. According to this instruction, for example, if the digital audio information channel has a capacity for four audio channels, the audio processor 16 records audio information on two channels of the audio track of the recording medium 11, and records the audio information on the remaining two channels. Record image information.

Still image information read from the video memory 1 (l) is taken in to the audio processor 16 shown in FIG. 3 via the data bus 9, buffer 14, and data bus 20. and 217 are connected.Therefore, the captured still image information is input to the multiplexer 205 via the buffers 21B and 203, and is combined with the subcode data from the subcode processing circuit 204 as in the case of digital audio information. After that, the still image information is sent to an error correction encoder 206,
The signal is outputted to the signal line 17 via the modulation circuit 207 and the amplifier 208, and recorded on the remaining two channels of the digital audio information channels on the recording medium 11 that are not used for recording audio information.

Usually, a digital audio information channel can record ID data, subcode data, etc. in addition to original information. Therefore, during recording, the usage of the digital audio information channel can be recorded as one of the subcode data. By using this data during playback,
The content of a digital audio information channel can be accurately identified.

Although the recording system has been described above, the reproduction system will now be described.

The video signal recorded on the video information channel of the recording medium 11 is reproduced by a reproduction head (not shown). An output terminal of this reproducing head is connected to an input terminal of an amplifier 107 via a signal line 21. The output terminal of the amplifier 107 is connected to a demodulation circuit 108 , an A/D converter 109 , a buffer 110 .
It is connected to the data bus 5 via 115. Therefore, the reproduced signal from the video information channel of the recording medium 11 is amplified by the amplifier 107 in FIG. 2 via the signal line 21, demodulated by the demodulation circuit 10g, and then
/D converter 109 converts the image into digital video information. This digital video information is stored in buffers 110.11
5 to the data bus 5, and written to the video memory 10 via the buffer 6 and data bus 9 in FIG.

The video information written in the video memory 10 as described above is read out and taken in again to the video processor 2 via the data bus 9, buffer 6, and data bus 5, and is then transferred to the video processor 2 via the buffers 115 and 111 in FIG. D/A converter 112
The analog signal is inputted into the input terminal 22 and converted back into an analog signal, and this analog signal is outputted to the video output terminal 22 as video information. In this case, a control signal input from the system controller 25 via the signal line 13 causes the buffer 6 to be in a conductive state and the buffer 14 to be in a non-conductive state.

On the other hand, the reproduced signal from the digital audio information channel of the recording medium 11 is input to the audio processor 16 shown in FIG. 3 via the signal line 23. In the audio processor 16, the input terminal of an amplifier 209 is connected to the signal line 23, and the reproduced signal is amplified by the amplifier 209. Amplifier 2
The output terminal of 09 is connected to the input terminal of demodulation circuit 210, and demodulates the amplified reproduction signal. The output terminal of the demodulation circuit 210 is connected to an error correction decoder 211, and the demodulated signal is decoded by the error correction decoder 211. The decoded signal is input to the subcode processing circuit 204 to decode the content of the subcode data in the reproduced signal, and according to the decoding result, the subcode processing circuit 204 separates the audio information and still image information in the reproduced signal. do. Among these pieces of information, audio information is input to the D/A converter 214 via buffers 212 and 213, converted back to an analog signal, and then output as audio information via the audio output terminal 24. The still image information is output via the buffer 217 and the data bus 20, and is sent to the video memory 10 via the buffer 14 in FIG.
is supplied to

At this time, the result of decoding the subcode data obtained by the subcode processing circuit 204 from the audio processor 16 in FIG. 3 is outputted via the signal line 26 and supplied to the system controller 25 in FIG.

Based on the above decoding result and instructions from outside the device, the system controller 25 connects the memory controller 113 in the video processor 2 and the audio processor 16 via the signal line 13.
The memory controller 215 and buffer 6.14 within the memory controller 215 control the operation of the buffer 6.14. Specifically, this control is performed at the video output terminal 2.
The process is performed as follows depending on the video information to be output from 2.

When information on the video information channel is selected: Buffer 6
. . . Conductive state Buffer 14 . When a digital audio information channel is selected, information is read from the audio processor 16.Buffer 6... non-conducting state.Buffer 14...conducting state. Outputting still image information.Buffer 6...conducting state.Buffer 14. ...Non-conducting state -Memory controller 215...The contents of the video memory 10 are not rewritten.In the above manner, a part of the digital audio information channel can also be used for recording and reproducing information other than audio information, such as still image information. can be used.

According to the above embodiment, in a recording/reproducing apparatus such as a VTR having a plurality of digital information channels on a recording medium,
When a part of the digital information channel is not used, a part of the digital audio information channel can be used for recording and reproducing information other than digital audio information such as still image information defined by the video memory in the device. . Therefore, it is possible to expand the functions and uses of the device while suppressing an increase in the hardware scale, which has a great practical effect.

Next, another embodiment will be described with reference to FIG.

This embodiment basically has the same configuration as the previous embodiment, but according to this embodiment, a buffer 27 is connected between the system controller 25 and the video memory 10. Further, connected to this buffer 27 are a digital information input terminal 28 for receiving digital information from the outside, and a digital information output terminal 29 for outputting digital information to the outside.

According to the embodiment shown in FIG. 5, the video information stored in the video memory 10 in the following manner can be recorded as still image information on the digital audio information channel on the recording medium 11.

(1) In the process of recording and reproducing video information, the control bus input from the system controller 25 via the signal line 13 causes the buffers 6 and 27 to be rendered non-conductive and the buffer 14 to be rendered conductive at a predetermined timing. The audio processor 16 accesses the video memory 10 via the address bus 18, control bus 19, data bus 20, buffer 14, address bus 7, control bus 8, and data bus 9, and takes in predetermined information.

(2) Digital video information is input to the buffer 27 via the terminal 28. At this time, the system controller 25
At a predetermined timing, the buffer 27 is made conductive and the buffer 6.14 is made non-conductive at a predetermined timing by a control signal inputted from the buffer 27 through the signal line 13. System controller 25 controls video memory 10 via address bus 30.7 and control bus 31.8,
The digital video is transferred to the video memory 10 via the data bus 9.
write to. The method of transferring data from the video memory 10 to the audio processor 1B is the same as (1) above. In this case, by outputting the contents of the video memory 10 to the video output terminal 22 via the video processor 2, the digital video information input to the video memory 10 can be confirmed on a display device or the like.

The contents of the video memory 10 are read out from the video memory 10 by address data (bus 30.7) and various control signals (bus 31.8) input from the system controller 25 to the video memory 10 via the buffer 27. It can be outputted via the bus 9, buffer 27, and digital information output terminal 29.

As described above, part or all of the digital audio information channel can also be used for recording and reproducing information other than audio information, such as still image information.

According to the present invention, in a recording/playback device such as a VTR that has a digital audio information channel on a recording medium in addition to a video information channel, part or all of the digital audio information channel is stored in the video memory inside or outside the device. It can also be used to record and reproduce information other than digital audio information such as still image information. Therefore, it is possible to expand the functions and uses of the device while suppressing an increase in hardware scale, which has a great practical effect.

Next, operations in various modes will be explained with reference to FIGS. 6 and 7. In FIGS. 6 and 7, video and audio signals are digitally recorded. This is an example of a digital VTR.

First, a first recording mode in which a part of a recorded moving image is recorded as a still image on an audio channel will be explained with reference to FIG.

When executing the first recording mode, first, the first mode is selected by operating a switch on a control panel (not shown). At this time, the moving image signal v1 is converted into a digital video signal by the A/D converter 51, and the buffer 5
2 is stored in the frame memory 53 as video information. The video information read from the frame memory 53 is encoded by an error correction encoder 54 and then sent to a multiplexer 56. At this time, the video information read from the frame memory 53 is selectively transferred to the buffer 53.
5 and stored in the frame memory 5B. That is, part of the moving image is stored in the frame memory 56 as a still image. The still picture information read from the frame memory 5B is input to the error correction encoder 58 via the selector 57. At this time, the A/D converter 64 is connected to the selector 57.
When the two-channel audio information converted into a digital signal is input, still image information and audio information are selectively input to the error correction encoder 58. Error correction encoder 58 encodes still image information and audio information, and outputs the encoded still image information and audio information to multiplexer 5B. At this time, an ID code for identifying whether the information is audio information or still image information is added to the audio information and still image information in the error correction encoder 58.

The multiplexer 56 multiplexes the moving image information sent from the moving image system and the still image information and audio information sent from the still image system, and outputs the multiplexed image information to the modulation circuit 59. Modulation image information is provided by amplifier 80S rotating transformer 61 and amplifier 6
1 to the recording head 63. Recording head 6
3 records the input video information on video track V,
Record audio information on 2 channels of audio track A,
Still image information is recorded on the remaining two channels of audio track A.

In the above manner, the audio information is transferred to audio track A 2.
At the same time, part of the moving image is recorded as a still image on the remaining channels of audio track A. That is, the first recording mode is executed.

Next, a second recording mode in which a still image input from the outside is recorded on audio track A will be explained.

In this second recording mode, the still image signal V2 is converted into a digital image signal by the A/D converter 65, and this digital image signal is sent to the frame memory 5 via the buffer 66.
6 as still image information.

Thereafter, as in the first mode, the externally input still image information read from the frame memory 56 is input to the error correction encoder 58 via the selector 57 and encoded. It is recorded along with the ID code on the remaining two channels of audio track A of the recording medium 11 via the amplifier 60, rotary transformer 61, amplifier 62, and recording head 83.

Next, a third recording mode in which a part of the reproduced moving image is recorded on the audio track as a still image will be explained.

In this third recording mode, as shown in FIG. 7, reproduction information reproduced from the recording medium 11 by the reproduction head 71 is input to the demultiplexer 76 via the amplifier 72, the rotary transformer 73, the amplifier 74, and the demodulator 75. Ru. The demultiplexer 76 demultiplexes the playback information,
Buffer 77 the video information played from the video track
Output to. The video information in the buffer 77 is sent to an error correction decoder 78 and is decoded by the error correction decoder 78.

The decoded video information is stored in the frame memory 79, and the video information read from the frame memory 79 is stored in the buffer 80.
The signal is input to the D/A converter 81 via the D/A converter 81. The D/A converter 81 converts the reproduced moving image information into an analog image signal, and outputs the reproduced image signal to the A/D converter 51 of the recording system shown in FIG. In the circuit shown in Figure 6, the reproduced signal is in mode 1.
A part of the reproduced image information is recorded in the remaining channels of the audio track as still image information. That is, part of the moving image information reproduced from the video track of the recording medium is recorded on the audio track A as a still image.

Note that the third recording mode may be realized as follows.

That is, in the above description, the video information read from the frame memory 79 is selectively stored in the frame memory 84 via the buffer 89. That is, part of the moving image is stored in the frame memory 84 as a still image. The still image information read from the frame memory 84 is transmitted to the signal line A.
The signal is inputted to the selector 57 in FIG. 6 via. Processing after the selector 57 is performed in the same manner as in the first recording mode described above, and a portion of the reproduced image information is recorded as still image information in the remaining channels of the audio track. That is, part of the moving image information reproduced from the video track of the recording medium is recorded on the audio track A as a still image.

Next, a fourth recording mode in which still image information reproduced from audio track A is recorded on the audio track again will be described.

In this fourth recording mode, in the circuit shown in FIG. 7, reproduction information reproduced from the recording medium 11 by the reproduction head 71 is input to the demultiplexer 7B via the amplifier 72, the rotary transformer 73, the amplifier 74, and the demodulator 75. be done.

The demultiplexer 76 demultiplexes the reproduction information, separates the reproduction information from the video track V and the reproduction information from the audio track A, and outputs the reproduction information of the audio track A to the error correction decoder 82. The error correction decoder 82 identifies audio information and still image information according to the ID code, and inputs reproduced still image information to the frame memory 84 via the buffer 83. The reproduced still image information read from the frame memory 84 is input to the D/A converter 86 via the buffer 85, converted into an analog still image signal, and input to the A/D converter 65 shown in FIG.

On the other hand, the audio information is outputted to the A/D converter 64 in FIG. 6 via the buffer 87 and the D/A converter 88.

The reproduced still image signal input to the A/D converter 65 is converted into digital reproduced still image information, and is input to the selector 57 via the buffer 66 and frame memory 56. The reproduced still image information via the selector 57 is sent to the error correction encoder 5.
8, multiplexer 56, modulation circuit 5
9, an amplifier 60, a rotary transformer 61, and an amplifier 62 to supply the recording head 63. The recording head 63 records the reproduced still image information on an audio track that is the same as or different from the audio track that reproduced the reproduced still image information. That is, in this fourth recording mode, still image information reproduced from a predetermined audio track is recorded on the original or other audio track.

Note that the fourth recording mode may be realized as follows.

That is, in the above description, the reproduced still image information read from the frame memory 84 is input to the selector 57 in FIG. 6 via the signal line A. Processing after the selector 57 is performed in the same manner as in the first recording mode described above, and reproduced still image information is recorded on the audio track. That is, still image information reproduced from a predetermined audio track of the recording medium is recorded on audio track A.

Next, a fifth recording mode in which only still images are recorded and no moving images are recorded will be described.

In this fifth recording mode, the still image information stored in the frame memory 53 or the still image information input from the outside and stored in the frame memory 56 is transmitted to the selector 57, error correction encoder 58, multiplexer 56, modulation circuit 59. ,
The still image information is input to a recording head 63 via an amplifier 60, a rotary transformer 61, and an amplifier 2, and the recording head 63 records the still image information on an audio track A of the recording medium 11.

Next, a sixth recording mode for recording a moving image will be explained. According to this sixth recording mode, the moving image video signal V1 is converted into a digital video signal by the A/D converter 51, and is stored in the frame memory 53 via the buffer 52 as video information. The video information read from the frame memory 53 is encoded by an error correction encoder 54 and then sent to a multiplexer 56. Multiplexer 56 outputs video information to modulation circuit 59. Modulated moving image information is input to a recording head 63 via an amplifier 60, a rotary transformer 61, and an amplifier 62. The recording head 63 records the input moving image information on the video track V.

Next, a seventh recording mode for recording audio information will be explained.

In this recording mode, the audio signal A is converted into digital audio information by the A/D converter 64, and the selector 5
7 is input. The audio information passed through the selector 57 is input to an error correction encoder 58 and encoded. At this time, ID information indicating that the audio information is audio information is added to the audio information. The encoded audio information is sent to a multiplexer 56,
The signal is input to the recording head 63 via a modulation circuit 59, an amplifier 60, a rotary transformer 61, and an amplifier 62. The recording head 63 records the input audio information on the audio track of the recording medium 11.

The recording mode has been explained above, but the playback mode will now be explained.

First, a first reproduction mode in which only still image information recorded on the audio track of the recording medium II is reproduced will be explained.

In this first reproduction mode, still image information reproduced from the audio track of the recording medium 11 by the reproduction head 71 is input to the demultiplexer 76 via the amplifier 72, the rotary transformer 73, the amplifier 74, and the demodulator 75. The still image information via the demultiplexer 7B is input to the error correction decoder 82 and is decoded by the error correction decoder 82. The decoded still image information is input to a frame memory 84 via a buffer 83.

Still image information read from the frame memory 84 is input to a D/A converter 86 via a buffer 85 and converted into an analog still image signal.

In the manner described above, the still image information recorded on the audio track is reproduced, and the reproduced information is supplied to and displayed on, for example, a display.

Next, a second device that plays a mixture of still image information and video information
Explain playback mode.

In this mode, reproduction information reproduced from the recording medium 11 by the reproduction head 71 is input to the demultiplexer 76 via the amplifier 72, the rotary transformer 73, the amplifier 74, and the demodulator 75. This demultiplexer 7B
demultiplexes the playback information and creates the video track V
The reproduced moving image information from the audio track A and the reproduced information from the audio track A are separated, and the reproduced still image information from the audio track A is outputted to the error correction decoder 82. The error correction decoder 82 identifies audio information and still image information according to the ID code,
The reproduced still image information is input to the frame memory 84 via the buffer 83. The reproduced still image information read from the frame memory 84 is stored in the frame memory 79 via the buffer 89 at a predetermined timing.

On the other hand, the video information via the demultiplexer 76 is input to the buffer 77. The video information in the buffer 77 is sent to an error correction decoder 78 and is decoded by the error correction decoder 78. The decoded video information is stored in frame memory 79. Note that storage of the decoded video information in the frame memory 79 is prohibited at the timing when the reproduced still image information should be stored. At this time, still image information and moving image information are combined in the time direction in this frame memory 79.

Therefore, the information read from the frame memory 79 is a mixture of still image information and moving image information, and such mixed information is outputted as playback information via the buffer 80 and the D/A converter 81.

Next, if no video information is recorded on the recording medium 11,
A third reproduction mode in which still image information is output to a moving image system will be explained.

According to this third playback mode, the still image information read out by the playback head 71 from the audio track of the recording medium 11 is transmitted through the amplifier 72, the rotary transformer 73, the amplifier 74, the demodulator 75, and the demultiplexer 76 to cause errors. The signal is input to the correction decoder 82 and decoded by the error correction decoder 82 . The decoded still image information is stored in the frame memory 79 via a buffer 83 and a moving image buffer 89. Still image information read from the frame memory 79 is input to a D/A converter 81 via a buffer 80, converted into an analog still image signal, and displayed as a still image on, for example, a monitor (not shown). That is, in this third playback mode, still image information recorded on an audio track is processed through a moving image circuit and displayed as a still image on a moving image monitor.

Next, a fourth playback mode for playing back a moving image will be explained.

The video information read from the video track of the recording medium 11 is sent to a buffer 77 via an amplifier 72, a rotary transformer 73, an amplifier and demodulator 75, and a demultiplexer 76.
is input. The video information output from buffer 77 is sent to error correction decoder 78, decoded, and then stored in frame memory 79. The decoded video information stored in the frame memory 79 is input to a D/A converter 81 via a buffer 80, converted into an analog video signal, and displayed as a video on a video monitor.

Next, a fifth reproduction mode for reproducing audio will be explained.

The audio information read out by the RAD 71 from the audio track of the recording medium 11 is input to the error correction decoder 82 via the amplifier 72, rotary transformer 73, amplifier 74, demodulator 75, and demultiplexer 76, and is subjected to error correction. It is decoded by the decoder 82. The decoded audio information is input to a D/A converter 88 via a buffer 87 and converted into an analog audio signal. This audio signal is input to an audio device and output as audio.

It should be noted that the present invention can be implemented with various modifications without departing from the scope of the invention.

[Effects of the Invention] According to the present invention, in a recording and reproducing apparatus such as a VTR having a plurality of digital information channels on a recording medium, when some of the digital information channels are not used, some of the digital audio information channels are can be used for recording and reproducing information other than digital audio information such as still image information defined by the video memory in the device.

Therefore, it is possible to expand the functions and uses of the device while suppressing an increase in the hardware scale, which has a great practical effect.

[Brief explanation of drawings]

FIG. 1 is a block circuit diagram of a recording/reproducing apparatus according to an embodiment of the present invention, FIG. 2 is a block circuit diagram of a video processor in FIG. 1, and FIG. 3 is a block circuit diagram of an audio processor in FIG. 1. FIG. 4 is a diagram showing a recording medium, FIG. 5 is a block circuit diagram of a recording/reproducing apparatus according to another embodiment,
FIG. 6 is a block circuit diagram of a recording circuit section of a recording/reproducing apparatus according to another embodiment, and FIG. 7 is a block circuit diagram of a reproducing circuit section corresponding to the recording circuit section of FIG. 6. Figure 1

Claims (11)

[Claims] (1) A recording and reproducing device for recording and reproducing information on a recording medium having an input terminal and having first and second tracks, which includes a video memory having a capacity for at least one frame, and at least a moving image. information receiving means for receiving information;
a first recording means for recording on a track; a first reproduction means for reproducing moving image information recorded on a first track of the recording medium via the video memory; audio information input via the input terminal; a second recording means for recording at least one of still image information formed by moving image information selectively read from the video memory on the second track of the recording medium; A recording/reproducing apparatus comprising: second reproducing means for reproducing and outputting a reproduced signal; and means for writing a reproduced signal from a second track of the recording medium into the video memory. (2) The second recording means includes a buffer means for recording the video information selectively read out from the video memory as still image information, and the still image information read out from the buffer means and the input terminal. 2. The recording and reproducing apparatus according to claim 1, further comprising means for respectively recording audio information inputted through a plurality of channels of said second track. (3) A recording and reproducing apparatus characterized in that the recording and reproducing apparatus according to claim 1 has means for multiplexing video information, still image information, and audio information. (4) The recording/reproducing apparatus according to claim 3, wherein the second recording means includes means for adding ID information indicating still image information and audio information to the still image information and audio information, respectively. (5) The recording/reproducing apparatus according to claim 3, wherein the second recording means includes means for error correction encoding the still image information and the audio information. (6) The first recording means and the second recording means include recording head means for recording video information, still image information, and audio information on the recording medium.
The recording and reproducing device described. (7) a first track and a second track having multiple channels;
A recording and reproducing apparatus that records and reproduces information using a recording medium having tracks, comprising: video memory means having a capacity of at least one frame of video; and first input/output terminal means for receiving video information and transmitting reproduced video information. a first input/output means for inputting and outputting video information between the first input/output terminal means and a first track of the recording medium via the video memory means; a second input/output terminal means for transmitting information; a second input/output means for inputting/outputting information between the second input/output terminal means and a predetermined channel of a second track of the recording medium; third input/output terminal means for receiving still image information and transmitting reproduced still image information; and transmitting the still image information between the input/output terminal means, the video memory means, and another channel of the second track. A recording/reproducing apparatus characterized by having a third input/output means for inputting/outputting. (8) The first input/output means writes video information to the video memory means, reads the written video information, and writes the video information read from the video memory means to a first track of the recording medium. 8. The recording and reproducing apparatus according to claim 7, further comprising a recording means for recording on. (9) The second input/output means includes means for error correction encoding the audio information input from the second input/output terminal means, and a means for error correction encoding the audio information input from the second input/output terminal means, and a second
9. The recording and reproducing apparatus according to claim 8, further comprising means for recording on a track. (10) The third input/output means includes a buffer means for storing still image information inputted from the third input/output terminal means, and means for writing the still image information of the buffer means into the video memory means. 9. The recording/reproducing apparatus according to claim 8, wherein the recording/reproducing apparatus is configured as follows. (11) A recording and reproducing apparatus for recording and reproducing information on and from a recording medium having first and second tracks, comprising: video memory means having a capacity for at least one frame of video; and a first input terminal; a first recording means for recording video information input to a first input terminal on a first track of the recording medium via the video memory; reproducing video information recorded in the video memory via the video memory;
a first output means for outputting the information to the first output terminal; and a second input terminal, the information input to the input terminal and at least one of the information output from the video memory to the recording medium. a second recording means for recording on a second track of the recording medium; a means for reproducing information recorded on the second track of the recording medium; and inputting the information reproduced from the second track of the recording medium into the video memory. means having a second output terminal and outputting information reproduced from a second track of the recording medium to the second output terminal; and a third input terminal, the third input terminal having a second output terminal; A recording characterized in that it has means for inputting digital information input to a terminal into the video memory, and means having a third output terminal and outputting the output of the video memory to the third output terminal. playback device.