JPH06197306A - Recording/reproducing device and reproducing device - Google Patents

Abstract

PURPOSE:To enhance the operability while effectively utilizing a recording area by setting the state automatically that the initial recording is reproduced and displayed just after application of power or when a storage medium is loaded in the standby state. CONSTITUTION:With a power switch closed, the presence of a memory pack 88 is checked by an output of a detection circuit 92. When the memory pack 88 is loaded, the connected memory pack 88 is activated to read a content of an index table and an ID table and the processing is released in the case of the standby mode. Then a pointer representing a storage position of the index table is initialized and an ID number stored in the index table pointed out by the pointer is stored in an area for variables. Then an address in a data area stored in an ID of the ID table is retrieved and set to a prescribed area of a memory 86. Thus, just after application of power or when the memory pack 88 is newly loaded, the state is set to a ready state in which the initial storage information is at first reproduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus and a reproducing apparatus for recording or reproducing video and audio on a recording medium.

[0002]

2. Description of the Related Art As a recording system for recording moving images and sounds, a video tape recorder using a 1/2 inch or 8 mm wide magnetic tape is well known. In this recording system, fast-forwarding using a cue index signal and high-speed reproduction are used to convey the magnetic tape to a desired video recording position. After all, magnetic tape can only be accessed sequentially, so searching takes time.

[0003]

On the other hand, by improving the image compression technique, the data amount is reduced to 1/20 to 1/200.
Even if compressed to 1/2 inch VTR, the image quality can be maintained.
A disk device and a solid-state memory such as a flash memory have come to be considered as candidates for a moving image recording medium due to their increased capacity. Since these basically have random access capability, they have an advantage that they can reach a desired information recording location earlier than a magnetic tape. In particular, solid-state memory has the advantages of high access speed and no moving parts, and is less likely to be damaged or destroyed by impact, but it has a smaller capacity than hard disk devices, optical disks, and magneto-optical disks. There is.

It is an object of the present invention to provide a recording / reproducing apparatus and a reproducing apparatus with improved operability while effectively utilizing the recording area of a recording medium.

[0005]

For the above object, the first
The recording / reproducing apparatus according to the invention is a recording / reproducing apparatus for recording video and audio into a data block at predetermined time intervals and recording the data on a removable recording medium, the recording medium in a power-on operation and a standby state. The address setting is performed at the beginning of the free area of the data area of the recording medium in accordance with the mounting operation of.

A recording / reproducing apparatus according to a second aspect of the invention is a recording / reproducing apparatus for recording video and audio into a data block at predetermined time intervals and recording them on a removable recording medium. When the erroneous erasure prevention flag is set according to the mounting operation of the recording medium and the erroneous erasure prevention flag, the address is set at the head of the data area of the recording medium, and the erroneous erasure prevention flag is not set. At this time, the address is set at the beginning of the free area of the data area of the recording medium.

A recording / reproducing apparatus according to a third aspect of the present invention is a recording / reproducing apparatus for converting video and audio into data blocks at predetermined time intervals and recording them on a removable recording medium. An address is set at the beginning of the data area of the recording medium, and an address is set at the beginning of the free area of the data area of the recording medium according to the setting of the recording mode.

A recording / reproducing apparatus according to a fourth aspect of the present invention is a recording / reproducing apparatus for recording video and audio into a data block at predetermined time intervals and recording them on a removable recording medium, and comprising a continue button and a plurality of addresses. Equipped with a pointer,
If you switch to recording mode after operating the continue button, recording will start from the last address recorded, and if you switch to playback mode after operating the continue button, the data will be stored in the designated one of the address pointers. It is characterized by starting reproduction from the address.

A reproducing apparatus according to a fifth aspect of the present invention is a reproducing apparatus for reproducing information recorded on a recording medium, wherein a plurality of pieces of information regarding reproduction stop positions are stored in a predetermined storage area in response to a predetermined reproduction stop signal. It is characterized by storing.

[0010]

With the above-described means, the operation feeling is improved because the first recording is automatically set to a state in which it can be reproduced and displayed immediately after the power is turned on or when the recording medium is mounted in the standby state. Further, it is set to an appropriate address according to the erroneous erasure prevention flag. Furthermore, since an appropriate address is selected according to the setting of the recording mode or the reproduction mode, it is possible to quickly shift to the next operation, which also contributes to the improvement of the operation feeling.

Further, the continue button and at least one address pointer can specify the recording start position and the reproduction start position by an easy operation, and the operability is improved.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

First, an outline of a video / audio recording system to which the present invention is applied will be described. FIG. 1 shows a schematic block diagram thereof.

In FIG. 1, the input terminals 10 and 12 are connected to
The L channel and the R channel of the stereo audio signal are input, respectively, and converted into digital signals by the A / D converters 14 and 16. The voice processing circuits 18 and 20 are A /
The output data of the D converters 14 and 16 are subjected to general audio signal processing such as noise removal and dynamic range limitation.

The voice compression circuit 22 includes a voice processing circuit 18,
The L-channel and R-channel audio data output from 20 is compression-encoded. For example, vector coding with 2-channel mixing using L / R correlation, or MP
EG (Moving Picture Expert)
Adaptive Transform Coding (ATA) under discussion in Group
C, ASPEC, etc.) and band division coding (MUSICA)
M, SB / ADPCM, etc.) can be used.

On the other hand, a video signal is input to the input terminal 24, converted into a digital signal by the A / D converter 26 and applied to the video processing circuit 28. Video processing circuit 28
Similarly to the audio processing circuits 18 and 20, performs general processing such as noise removal and restriction of dynamic range and supplies it to the video compression circuit 30.

The video compression circuit 30 receives the video data from the video processing circuit 28 from 1/20 to 1/200 in data amount.
Compression encoding. For example, MP proposed by MPEG
It uses a compression algorithm called EG-I. This is an appropriate combination of inter-frame correlation, motion vector compensation, and bi-directional prediction inter-frame compression.
The standard image quality of a 2-inch VTR can be maintained.

The audio compression circuit 22 supplies the compressed audio data to the data synthesizing circuit 32 and the information about the sound quality mode and the audio data length to the ID generating circuit 34. The video compression circuit 30 supplies the compressed video data to the data synthesis circuit 32 and the information about the image quality mode and the video data length to the ID generation circuit 34. As will be described in detail later, the data synthesizing circuit 34 collects the compressed video data and the compressed audio data for each constant time To (for example, 1 second, that is, 30 frames),
ID data from the ID generation circuit 34 is added to this and applied to the mass memory 36. The mass memory 36 is a large-capacity solid-state memory circuit including flash memory, DRAM, SRAM, and the like.

The memory control circuit 38 controls writing and reading of data in the mass memory 36, and the system control circuit 40 responds to the operation of the operation keys 42.
8. Control others. The system control circuit 40 also
The display device 44 displays various information such as the operating state and the date and time.

In video and audio recording, two time codes are usually used. Firstly, the elapsed time from the beginning of the recording medium or the video / audio program and the accumulated time of camera photographing, and secondly, the date and time information at the time of recording or photographing. The system control circuit 40 uses the former time code as S
It is generated in MPTE format and applied to the ID generation circuit 34.
The calendar clock 46 generates the latter time code,
It is supplied to the ID generation circuit 34.

The address information generation circuit 48 generates information relating to the data amount of the recording information and the head address from the address information from the memory control circuit 38, and the ID generation circuit 3
Supply to 4.

The ID generation circuit 34 includes circuits 22, 30, 4
The information from 0, 46 and 48 is formed into a predetermined format and applied to the data synthesizing circuit 32. Data synthesis circuit 3
2 is to synthesize compressed audio and video data generated by the audio compression circuit 22 and the video compression circuit 30 within a certain time To (for example, 1 second), add ID data from the ID generation circuit 34, and set 1 One data block.

The output data format of the ID generation circuit 34 is shown in FIG. As shown in FIG. 2, the ID generation circuit 3
The composite data string or data block according to 4 comprises a fixed length ID data area, a variable length audio data area, and a variable length video data area.

The ID data area includes an ID (number), time code, image quality mode, video data length, video start address,
It consists of a sound quality mode, audio data length, audio start address, and deleted flag. The deleted flag is used to logically erase a record without physically erasing the record.
As shown in FIG. 3, the ID (number) starts from an initial value 0, for example, and is incremented every fixed time To (for example, 1 second). This will be referred to as I in FIG. 3 and the following description.
Expressed with a 2-digit number following D.

The audio data area is composed of compressed data of an audio signal for one second, and more specifically, initial information (reset data) of the L channel and the R channel, followed by variable length encoded compressed data. Consists of. The video data area is composed of compressed data of a video signal for 1 second, that is, 30 frames, and specifically, for example, initial information (reset data) by intra-frame coding and the like, followed by variable length coding. It consists of compressed data.

The reproduction system will be briefly described. Mass memory 3
The data read from 6 is applied to the data distribution circuit 50. The data distribution circuit 50 uses the data shown in FIG.
The data of each area is separated from the block structure, the ID data is sent to the search information reproducing circuit 52, the compressed video data of the video data area is sent to the video expanding circuit 56, and the compressed audio data of the audio data area is sent to the audio expanding circuit 58. Apply.

The search information reproducing circuit 52 reproduces the basic information contained in the ID data and outputs it to the display information generating circuit 54. The display information generation circuit 54 generates information to be displayed as an image, for example, an image signal for a time code. The video decompression circuit 56 decompresses the compressed video data to restore the video data, and the audio decompression circuit 58 restores the compressed audio data to restore the audio data.

The data selection circuit 60 is a video expansion circuit 56.
The video data supplied from the audio output circuit 62 is output to the adder 62 and the video output terminal 64, and the audio data supplied from the audio expansion circuit 58 is output to the D / A converter 66 and the audio output terminal 68. The adder 62 superimposes the video signal from the display information generation circuit 54 on the restored video data, and outputs it to the D / A converter 70. The D / A converter 66 converts audio data into an analog audio signal, and the D / A converter 70 converts video data into an analog video signal. The analog audio signal is applied to the audio monitor (eg, speaker) 72, and the analog video signal is applied to the video monitor 74. Thereby, the recorded video and recorded audio can be viewed.

The memory space of the mass memory 36 is shown in FIG. In this system, the memory space of the mass memory 36 is basically divided into three areas. The first is a table of contents table that registers the ID number of the first recorded data of each shooting scene, the second is an ID table that stores the top recording address of the data block of each continuous ID number, and the third is the data. This is a data area to be stored. Further, a pointer SP for storing a numerical value indicating a position for starting the next recording on the table of contents and a memory counter CC for storing an ID number at the time of starting the next recording are provided at predetermined locations in the memory space.

In FIG. 4, the first scene # 1 is designated as ID0-I.
Recorded over D19, then ID the second scene # 2
20 to ID44, and record the third scene # 3 at ID45
It will be recorded later. In each storage position TC (n) of the table of contents table, the head ID in that order for each recorded scene
The number is recorded, and each storage location ID (n) in the ID table
The beginning addresses X and Y of the data area in which the data block having the ID number n is recorded are recorded in the area, and the data blocks having the structure shown in FIG. 2 are sequentially recorded in the empty area in the data area. When the data block with the ID number n is completely recorded in the data area, ID (n + 1)
In advance, the address of the data area at the time of starting recording next is stored in advance.

Incidentally, the data area is logically (X,
Although Y) is expressed in two dimensions, it goes without saying that it may be expressed in one dimension.

S for recording of scenes # 1, # 2 and # 3
P, CC, table of contents CT (n) and ID table I
The change in D (n) is shown as a table in FIG. In the recording pause state before the first recording, SP = 0 and CC = 0, and I
In D (0), the start address (X0, Y
0) is set.

In response to a user's instruction to start recording of scene # 1, the system control circuit 40 causes the ID generation circuit 34 to operate.
An ID number (0 here) corresponding to the CC value is generated. This ID number is incremented every 1 second. The data blocks sequentially output by the data synthesis circuit 32 are
The address of the data area indicated by ID (0), that is, (X
0, Y0) are sequentially written.

Incidentally, in response to the writing of the data block in the data area, the head storage address of the next data block is written in the ID table at the storage position corresponding to the ID number. That is, after writing the data block of ID (n), ID (n + 1) in the ID table
The write start address of the next data block is written in.

In this way, it is assumed that the shooting (recording) of scene # 1 ends with ID 19 and a recording pause is entered.
At this point, SP is incremented to 1 and C
The next ID number, 20, is set in C. When recording the next scene, it starts from the ID number indicated by CC, sets the ID number in the table of contents table TC (SP) indicated by SP, and sets the ID indicated by CC in the ID table.
Record the data block from the address stored in the storage location corresponding to the number.

That is, when the next scene # 2 is started, S
Since P = 1 and CC = 20, TC in the table of contents table
The ID number (20 here) indicated by the CC is set in (1). The ID generation circuit 34 starts from 20, and generates an ID number that increments every 1 second. Data from the storage position of the ID number indicated by CC in the ID table
The recording start address of the block is known, and the data blocks synthesized by the data synthesis circuit 32 are stored in the data area in order from that address. Similar to scene # 1, the head storage address of each ID is set in the ID table.

If the shooting (recording) of scene # 2 ends with ID44, SP is incremented to 2 at this point, and the next ID number, 45, is set in CC.

In this system, only the storage start address of the data block of each ID is recorded in the ID table because it is premised that a series of data blocks are continuously recorded in the data area. If the address of the data area occupied by one data block is recorded in the ID table or the like, as seen in various file management systems in the auxiliary storage device of a computer, such a premise is not necessary. Is clear.

The table of contents table TC (n) may include not only the ID number but also control information indicating whether erasing is possible, whether reproduction is possible or not, as shown in FIG. One bit is assigned to each, and a total of 3 bits may be assigned. "1" indicates that deletion, reproduction, or copying is not possible, and "
"0" indicates permission of erasing, reproducing or copying.

The ID number recorded in the table of contents is the ID number at the beginning of each scene at the time of shooting, but in the case of video and audio information from video software, the ID number at the beginning of the capture to be classified. You can do this.

Next, a description will be given of the operation when the mass memory 36 has a memory pack structure which can be detached from the main body of the apparatus and the memory pack is mounted when the power is turned on or in the power-on state. FIG. 7 shows a schematic block diagram of the configuration.

In FIG. 7, reference numeral 80 is a power supply, 82 is a central processing unit (CPU) for controlling the whole, 84 is a power-up / clear circuit for detecting the rising and falling of the output voltage of the power supply 80 and notifying the CPU 82, 86 is the CPU 82
Memory for storing programs, variables and constants required for the operation of the memory, 88 has a mass memory 36 inside, and is a removable memory pack, 90 is an interface of the memory pack 88, and 92 is the mounting of the memory pack 88. The detection circuit 94 for detection includes, in addition to the power switch, operation keys necessary for recording, reproduction, stop, forward feed and reverse feed recording / reproduction, and a state at the time of exiting the operation mode when returning to the same operation mode. Operation keys equipped with a continue button etc. for instructing whether to continue operation from
Reference numeral 96 is a monitor for displaying a reproduced image and an operation mode.

The memory 86 is constantly supplied with the required power from the power supply 80, and can store and hold the necessary data even when the power is turned off. The memory 86 has a table of contents and IDs of the mass memories in the attached memory pack 88.
It is preferable to keep exactly the same data as the table, SP and CC, ie a copy. When the data in the memory pack 88 is updated, the data in the memory 86 is also updated at the same time.

FIG. 8 shows a flowchart of a first operation example of the initialization operation when the power switch is turned on in the apparatus shown in FIG. When the power switch is turned on (S1), the presence or absence of the memory pack 88 is checked by the output 92 of the detection circuit (S2). When the memory pack 88 is not installed,
Wait for mounting (S2). When a predetermined time has not passed yet, the standby mode with low power consumption is set (S3).
When the memory pack 88 is installed (S2), the connected memory pack 88 is energized to turn on the table of contents, S
The contents of the P, CC and ID tables are read, and if it is in the standby mode, the standby mode is released (S4).

Pointer p indicating the storage position of the table of contents
Is initialized to 0 (S5), and the ID number stored in the table of contents table TC (p) indicated by the pointer p is stored in the variable idno (S6). Then, the ID of the ID table (idn
search the XY address of the data area stored in
It is set at a predetermined location in the memory 86 (S7).

As a result, immediately after the power is turned on, or when the memory
When the pack 88 is newly mounted, the first stored information is set to be ready to be reproduced first.
This is useful in the case where some video and audio information is recorded in the connected memory pack 88 and it is ignored, and recording is started from the beginning of the data area.

FIG. 9 shows a second flowchart of the initialization operation when the power switch is turned on. When the power switch is turned on (S101), the presence or absence of the memory pack 88 is checked by the output 92 of the detection circuit (S102).
If the memory pack 88 is not installed, wait for installation (S
102). When a predetermined time has not passed yet, the standby mode with low power consumption is set (S103). When the memory pack 88 is attached (S102), the connected memory pack 88 is energized to turn on the table of contents, SP,
Read the contents of CC and ID table,
If it is in the mode, the standby mode is released (S104).

A pointer p indicating the storage position of the table of contents table
SP, that is, the index position of the next recording is set (S10
5), the CC indicating the ID number of the next record is stored in the variable idno (S106), and the ID (idno) of the ID table is stored.
The XY address of the data area stored in the memory is read and set in a predetermined location of the memory 86 (S107). As a result, it is set to an address suitable for the next recording.

Even when the replacement and mounting of the memory pack 88 are detected in the standby mode for some reason, the operation is performed as shown in and after S104.

Next, an operation example of changing the initial state according to the erase flag will be described with reference to FIG. When the power switch is turned on (S11), the presence / absence of the memory pack 88 is checked by the output 92 of the detection circuit (S12). If the memory pack 88 is not installed, it waits for installation (S1
2). When a predetermined time has not passed yet, the standby mode with low power consumption is set (S13). When the memory pack 88 is attached (S12), the connected memory pack 88 is energized to read the contents of the table of contents table, SP, CC and ID table, and if it is in the standby mode, the standby mode is set. Cancel (S1
4).

Check the erasure prohibition flag in the table of contents (S
15) If it cannot be erased, the pointer p indicating the storage position of the table of contents table is initialized to 0 (S16), the ID number stored in the table of contents table TC (p) is stored in the variable idno (S17), The XY address of the data area stored in the ID (idno) of the ID table is searched and set in a predetermined location of the memory 86 (S18).

If the erasure prohibition flag permits erasure (S15), the pointer p is initialized to SP-1, that is, the index position of the last recorded scene (S1).
9), the ID number stored in the table of contents table TC (p) is stored in the variable idno (S20), and the ID of the ID table is stored.
The XY address of the data area stored in (idno) is searched and set in a predetermined location of the memory 86 (S2
1).

Also in this case, when the replacement and mounting of the memory pack 88 are detected while in the standby mode for some reason, the operation as shown in S14 and thereafter is performed.

In summary of FIG. 10, when the erasure is prevented, the address of the first recorded information is set, and when the erasure is not prevented, it is set to the address suitable for the next recording. It

As shown in FIG. 11, when the recording mode is selected while the power is on and the memory pack 88 is attached, the head address of the open area of the data area of the mass memory 36 is set as the recording start address. When the reproduction mode is selected, the first address (X0, Y0) of the data area is set as the reproduction start address. It is needless to say that once the reproduction mode is entered, the reproduction can be started from the desired scene or capture by the forward or reverse feed.

FIG. 11 will be described in detail. When the recording mode is selected (S31), SP is set to the pointer p, that is, the index position of the next recording (S32), CC indicating the ID number of the next recording is stored in the variable idno (S33), and the ID table X of the data area stored in ID (idno)
The Y address is searched and set at a predetermined location in the memory 86 (S34). Then, in response to the recording start operation, recording in data block units is started as described above (S35).

Also, by selecting the reproduction mode (S3
6) The pointer p is initialized to 0 (S37), the ID number stored in the table of contents table TC (p) is stored in the variable idno (S38), and the data area stored in the ID (idno) of the ID table is stored. The XY address is searched and set at a predetermined location in the memory 86 (S39). After that, the video and audio of the designated scene or capture are reproduced according to operations such as reproduction start, forward feed, and reverse feed (S4).
0).

In FIG. 11, the start address of each is set when the recording mode or the reproduction mode is selected. Of course, when the power is turned on or the memory pack 88 is mounted, the pointer p relating to the recording for starting the reproduction is set. , ID number i
The dno and the start address of the data area may be stored as a reproduction control variable, and the same control information for the next recording may be stored separately.

Next, an example of operation using the continue button of the operation key 94 will be described. Here, an address pointer AP that stores the address of the data area of the mass memory 36 that was set last in any specified operation state
It is equipped with. The address pointer AP is arranged on the mass memory 36 as shown in FIG.

FIG. 13 shows a flow chart of recording and reproducing operations in response to the operation of the continue button. F
CONT is a flag that stores the operation of the continue button. In other words, if the continue button is on, FCONT = 1, and if it is off, FC
ONT = 0.

In the recording mode (S51), if FCONT is 1 (S52), SP is set to the pointer p, that is, the index position of the next recording is set (S53), and CC indicating the ID number of the next recording is changed. Stored in idno (S54), FC
The ONT is cleared (S55), and the recording mode is executed (S56). At this time, the ID of the ID table (idn
Recording is started from the XY address of the data area stored in o). If FCONT is 0 (S52), recording is started from the XY address indicated by the current address pointer (S56).

That is, when the continue button is operated and then the recording mode is set, new data is recorded after the existing recording regardless of the state immediately before. That is, it is additionally recorded. If you enter the recording mode without operating the continue button, recording will start from the current position.

In the reproduction mode (S51), if FCONT is 1 (S52), the data to be accessed
Address pointer AP is assigned to a variable idno indicating a block
Is substituted (S59) and FCONT is cleared (S6
0), the reproduction mode is executed (S61). If FCONT is 0 (S58), the data block from ID number 0 is reproduced (S61).

That is, if the continue button is operated and then the reproduction mode is set, reproduction is started from the data block registered in the address pointer AP regardless of the state immediately before, and the continue button is not operated. When the playback mode is set, playback is started from the current position.

The current idno value is stored in the address pointer AP when the power is turned off or the reproduction stop operation is performed. Thus, when the reproduction is started next time, the reproduction can be started from the reproduction end point or the reproduction interruption point immediately before.

In the operation example shown in FIG. 13, even when the power is turned off and then turned on, the operation can be performed as if the power was continuously turned on. Also, if a plurality of address pointers AP are provided and assigned to individual users, each person can enjoy reproduction without being affected by the operation state of others.

In the present embodiment, the address
Although the pointer AP is provided, it goes without saying that this address pointer may be stored on another recording medium if the individual recording medium can be identified.

In the present specification, particularly in the claims,
The recording / reproducing apparatus includes a recording-dedicated apparatus, a reproduction-dedicated apparatus, and a recording / reproduction dual-use apparatus, unless it is clearly excluded from others.

Although the embodiment in which the solid-state memory is used as the recording medium or the storage medium has been described, the present invention does not exclude the use of other recording media such as a hard disk device, an optical disk, and a magneto-optical disk.

[0070]

As can be easily understood from the above description, according to the present invention, it is possible to provide a video and audio recording system with better operability.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of a recording / reproducing system to which the present invention is applied.

FIG. 2 is a diagram showing a data block structure.

FIG. 3 is an explanatory diagram of an ID number that changes with time.

FIG. 4 is an explanatory diagram of a memory space of the mass memory 36.

FIG. 5 is an explanatory diagram of changes in contents of the memory 36 for a series of recordings.

FIG. 6 is a detailed structural diagram of a table of contents table.

FIG. 7 is a schematic block diagram of an embodiment of the present invention.

FIG. 8 is a flowchart of a first operation example of an initialization operation when the power is turned on and the memory pack is attached.

FIG. 9 is a flowchart of a second operation example of the initialization operation when the power is turned on and when the memory pack is attached.

FIG. 10 is a flowchart of an operation example in which the initial state is changed according to the erase flag when the power is turned on and when the memory pack is attached.

FIG. 11 is a flowchart of an operation for selecting a recording mode and a reproduction mode.

FIG. 12 is an explanatory diagram of a memory space in which an address pointer AP is arranged on the mass memory 36.

FIG. 13 is a flowchart of recording and reproducing operations in response to operation of a continue button.

[Explanation of symbols]

10, 12: Input terminal 14, 16: A / D converter 1
8, 20: Audio processing circuit 22: Audio compression circuit 24:
Input terminal 26: A / D converter 28: Video processing circuit
30: video compression circuit 32: data synthesis circuit 34: I
D generation circuit 36: mass memory 38: memory control circuit 40: system control circuit 42: operation key 44: display device 46: calendar clock 48: address information generation circuit 50: data distribution circuit 52: search information reproduction circuit 5
4: Display information generation circuit 56: Video expansion circuit 58: Audio expansion circuit 60: Data selection circuit 62: Adder 64: Video output terminal 6
6: D / A converter 68: Audio output terminal 70: D / A
Transducer 72: Sound monitor 74: Video monitor 80:
Power supply 82: Central processing unit (CPU) 84: Power-up / clear circuit 86: Memory 88: Memory pack 90: Interface 92: Memory pack detection circuit 94: Operation key 96: Monitor

Claims (6)

[Claims] 1. A recording / reproducing apparatus for recording video and audio into a data block at predetermined time intervals and recording them on a removable recording medium, which is used for power-on operation and mounting operation of the recording medium in a standby state. Accordingly, the recording / reproducing apparatus is characterized in that an address is set at the beginning of an empty area of the data area of the recording medium. 2. A recording / reproducing apparatus for recording video and audio into a data block at predetermined time intervals and recording the data on a detachable recording medium, comprising a power-on operation and a mounting operation of the recording medium in a standby state. According to the erroneous erasure prevention flag, when the erroneous erasure prevention flag is set, an address is set at the beginning of the data area of the recording medium, and when the erroneous erasure prevention flag is not set, the address of the data area of the recording medium is set. A recording / reproducing apparatus characterized in that an address is set at the beginning of an empty area. 3. A recording / reproducing apparatus for recording video and audio into a data block at predetermined time intervals and recording the data on a removable recording medium, wherein the data area is recorded at the beginning of a data area of the recording medium according to the reproduction mode setting. A recording / reproducing apparatus, characterized in that an address is set and an address is set at the beginning of an empty area of a data area of the recording medium according to the setting of a recording mode. 4. A recording / reproducing apparatus for converting video and audio into data blocks at predetermined time intervals and recording them on a removable recording medium, comprising a continue button and at least one address pointer, and a continue button. If you switch to the recording mode after operating, the recording will start following the last address recorded, and if you operate the continue button after switching to the playback mode, playback will start from the address stored in the specified address pointer. Characteristic recording / reproducing device. 5. A reproducing apparatus for reproducing information recorded on a recording medium, wherein a plurality of pieces of information regarding a reproduction stop position are stored in a predetermined storage area in response to a predetermined reproduction stop signal. apparatus. 6. The reproducing apparatus according to claim 5, wherein the predetermined storage area is provided in the recording medium.