JPH11203679A - Recording and reproducing system and recording and reproducing device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the management on a disk type medium of prerecorded information and newly recorded information and the simultaneous reproduction of both information by preliminarily writing prerecorded information becoming guide information for recording a new information in a semconductor recording medium being in a recording and reproducing device and reading out the prerecording information from the semiconductor recording medium at the time of recording the new information. SOLUTION: Before the additional recording of a voice information is started, video information which are to be made guide information are reproduced from a disk type recording medium 101 with a medium recording and reproducing means 106 to be stored in a semiconductor recording medium 102 via a recording and reproducing processing means 103. Thereafter, the video information becoming the guide information are reproduced from the medium 102 to be outputted from a video information output means 108. Voice information is inputted by making this video information a guide. The voice information are recorded on the medium 101 via a voice information input means 105 and the recording and reproducing processing means 103. At this time, the reproducing of the video information is performed from the medium 102 and the medium recording and reproducing means 106 and the mediuim 101 become occupyable to the recording operation of the voice information.

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 which uses a disk-type recording medium, performs both information recording operation and information reproducing operation by one means, and performs recording and reproducing operations independently. In the case of additionally recording new information for the purpose of simultaneous reproduction with the already recorded information already recorded on the disc type recording medium, Playback of recorded information that serves as guide information for recording the new information without simultaneously causing a recording operation and a playback operation,
It is another object of the present invention to simultaneously record new information on the disk-type recording medium.

[0002]

2. Description of the Related Art A conventional recording / reproducing apparatus using a disk-type recording medium aims at merely recording or reproducing information. In addition, a conventional recording / reproducing apparatus using a disk-type recording medium differs from a tape apparatus using a tape as a recording medium having a recording unit and a reproducing unit separately, in which an information recording operation and an information reproducing operation are performed in a single operation. Thus, the recording operation and the reproduction operation can be performed only independently. Due to such a configuration, reproduction of information from the disk-type recording medium and recording of information on the disk-type recording medium cannot be performed at the same time. Therefore, when new information for simultaneous reproduction with recorded information already recorded on a recording medium realized by an apparatus using a tape as a recording medium is additionally recorded on the recording medium, the new information is used as guidance information of the new information. An operation such as reproducing recorded information cannot be realized, and simultaneous execution of such a recording operation and a reproducing operation has not been considered. Furthermore, the recorded information after the recording of the new information, the recording management of the newly recorded information on the disk-type recording medium, and the simultaneous reproduction operation method have not been considered.

[0003]

The problem to be solved by the present invention is as follows.
In a recording / reproducing apparatus which performs a recording operation and a reproduction operation on the disk-type recording medium by the same means, and performs the recording operation and the reproduction operation independently, using the disk-type recording medium When performing additional recording of new information for the purpose of simultaneous reproduction with already recorded information recorded on a medium, the new information is recorded without simultaneously performing a recording operation and a reproduction operation on the disk-type recording medium. Reproduction of the recorded information to provide guidance information for
Recording of the new information on the disk-type recording medium at the same time, and furthermore, recording management of the already-recorded information and new-recorded information on the disk-type recording medium after recording the new information, and simultaneous reproduction operation Is simply realized.

[0004]

In order to solve the above-mentioned problems, the present recording / reproducing apparatus uses a disk-type recording medium as a first recording medium, and performs the same recording operation and reproduction operation on the disk-type recording medium. Performed by means, and, in a recording and reproducing apparatus that performs a recording operation and a reproducing operation independently, when performing additional recording of new information for the purpose of simultaneous reproduction with already recorded information recorded on the disk-type recording medium, When the recorded information serving as guide information for recording the new information is previously written in a semiconductor recording medium, which is a second recording medium provided in the recording / reproducing apparatus, when the new information is actually recorded. By reading the recorded information from the semiconductor recording medium, it is possible to reproduce the recorded information and record the new information without simultaneously performing the recording operation and the reproducing operation on the disk-type recording medium. To achieve at the same time.

Further, the new information is converted into medium recording information by recording / reproducing processing means provided in the recording / reproducing apparatus.
Writing in advance on a semiconductor recording medium as a second recording medium,
After being stored to some extent, it is read from the semiconductor recording medium and recorded at a predetermined position on the disk-type recording medium. The recording area of the new information recorded on the disk-type recording medium is provided at the time when the already-recorded information is recorded in advance, and the recorded information is defined as an information structure recorded on the disk-type recording medium. Place in continuous positions. As a result, the recorded information and the newly recorded information can be easily managed on the disk-type medium, and the simultaneous reproduction of the recorded information and the new recorded information can be easily performed.

Alternatively, a recording area for new information to be recorded on the disk-type recording medium is not provided when previously recorded information is recorded in advance, but is provided when additional recording of new information is performed. However, even in this case, since the recorded information is recorded at a continuous position on the information structure recorded on the disc-type recording medium, the recorded information is the recorded information on the disc-type medium together with the new recording information. Re-recorded with overwriting on top. However, since the amount of information is larger by the amount of new information than the already recorded information, the amount of information recorded on the disk-type recording medium is larger. Alternatively, the recorded information is compressed, and the compressed recorded information and the newly recorded information are re-recorded while overwriting the recorded information on the disk type medium. In this case, the amount of information is larger by the amount of new information than that of the already recorded information, but since the already recorded information is compressed, the amount of information recorded on the disk-type recording medium is equal, or depending on the quality of the information. It may be even smaller. Alternatively, new information is recorded by synthesizing or rewriting a part of previously recorded information. According to the above configuration, the recorded information and the newly recorded information can be easily managed on the disk-type medium, and the simultaneous reproduction of the recorded information and the newly recorded information can be easily performed. Further, since the information amount does not change even when the additional recording is performed, the additional recording is facilitated even on a disk-type recording medium in which a large number of files are continuously recorded. Also, since only the recorded information for recording the new information is rewritten, it is not necessary to provide a recording area for the new information when the recorded information is recorded in advance.
The recording efficiency of the disk type recording medium is improved.

[0007]

FIG. 1 shows a configuration of a recording / reproducing apparatus 100 according to the present invention.

In FIG. 1, 101 is a disk-type recording medium as a first recording medium, 102 is a semiconductor recording medium as a second recording medium, 103 is recording / reproducing processing means, 104 is video information input means, and 105 is video information input means. Audio information input means, 106 is a medium recording / reproducing means, 107 is a recording / reproducing timing adjusting means, 108 is a video information output means, 109 is an audio information output means, 110 is a disk drive means, and 111 is a disk constituted by a system control means. Using a type recording medium,
This is a recording / reproducing apparatus that performs a recording operation and a reproducing operation on a disk-type recording medium by the same means, and independently performs a recording operation and a reproducing operation. Hereinafter, each block shown in FIG. 1 will be described. Disc type recording medium 1 which is a first recording medium
01 records audio information and video information. optical disk,
This is a disk-shaped large-capacity recording medium such as a magnetic disk. Therefore, the information transfer speed increases as the number of rotations of the disk increases, so that the transfer speed during continuous recording and reproduction is high. However, information recorded at another discontinuous position on the disk is reproduced or recorded at another position. In this case, the semiconductor recording medium 102 as the second recording medium up to that position is a recording medium for temporarily storing audio information and video information. Therefore, although the capacity is smaller than the first recording medium, the information transfer speed is very high.

The medium recording / reproducing means 106 independently records information on or reproduces information from the disk-type recording medium 101. If the disk type recording medium 101 is an optical disk, it is an optical pickup, and if it is a magnetic disk, it is a magnetic head.

In the case of recording, the recording / reproducing processing means 103 compresses the recording information sent from the video information input means 104 and the audio information input means 104, adds an error correction code,
Processing such as modulation is sent to the medium recording / reproducing means 106. In the case of reproduction, the information reproduced from the disk type recording medium 101 by the medium recording / reproducing means 106 is demodulated,
It performs processing such as error detection, error correction, and decompression, and generates playback information to be output to the outside of the recording / playback apparatus. It is realized by a dedicated LSI or DSP.

The video information input means 104 receives video recording information input from outside the recording / reproducing apparatus. CC
This is realized by a D / A / D converter and the like.

The audio information input means 105 receives audio recording information input from outside the recording / reproducing apparatus. It is realized by a microphone, an amplifier, an A / D converter, and the like.

The recording / reproducing timing adjusting means 107 controls recording and reproducing timings and recording and reproducing transfer speeds, and is realized by a reference clock, a delay circuit and the like.

The video information output means 108 outputs the reproduced video information stored in the semiconductor recording medium 102 to the outside of the recording / reproducing apparatus. This is realized by a D / A converter, an amplifier, and a monitor.

The audio information output means 109 outputs the reproduced audio information stored in the semiconductor recording medium 102 to the outside of the recording / reproducing apparatus. This is realized by a D / A converter, an amplifier, and a speaker.

The disk drive means 110 performs control for performing stable recording and reproduction operations on the disk-type recording medium 101. This is realized by a spindle motor, actuator, and servo mechanism.

The system control means 111 manages the entire recording / reproducing apparatus. It is realized by a microcomputer.

An embodiment of the present invention will be described with reference to FIG.
First, a case will be described in which video information is recorded on the disc-type recording medium 101 shown in FIG. 1 and audio information for simultaneous reproduction with the video information is additionally recorded.

At the time of reproduction, in order to synchronize the video information already recorded on the disk-type recording medium with the audio information to be additionally recorded, the audio information recorded on the disk-type recording medium is additionally recorded when the audio information is additionally recorded. Video information must be reproduced as guidance information. This means that the recording operation and the reproduction operation are performed simultaneously. Since the conventional recording / reproducing apparatus can only perform the recording operation and the reproducing operation independently, it is necessary to realize the additional recording of the audio information for the purpose of simultaneously reproducing the video information recorded on the disk-type recording medium. Was impossible.

On the other hand, in the recording / reproducing apparatus shown in FIG. 1 according to the present invention, before the additional recording of audio information is started, video information reproduction and recording / reproduction from the disk type recording medium 101 to the medium recording / reproducing means 106 as guide information. Processing means 103
Is stored in the semiconductor recording medium 102 via the.

Thereafter, video information serving as guide information is reproduced from the semiconductor recording medium 102 and output by the video information output means 108. The output of the video information is used as a guide to input the audio information.

The audio information is input from the audio information input means 105, passes through the recording / reproduction processing means 103, and is recorded on the disk type recording medium 101 by the medium recording / reproduction means 106. At this time, since the reproduction of the video information is performed from the semiconductor recording medium 102, the medium recording / reproducing means 106 and the disk-type recording medium 101 are allowed to occupy the recording operation of the audio information. The timing of recording and reproduction on the disk type recording medium 101 and the semiconductor recording medium 102 for realizing additional recording of audio information for simultaneous reproduction with video information by the above method will be described with reference to FIGS. I do. The horizontal axis in FIG. 2 represents time, and the start is a case where video 1 to 4 of video information recorded on a disk-type recording medium as the first recording medium are reproduced and audio information is additionally recorded thereon. Is shown. The above-mentioned images 1 to 4 indicate a certain image information unit. For example, when a certain shooting scene for several minutes is recorded as one file on the first recording medium, a plurality of image information units and audio information are included in the file. Units are included. Although the images 1 to 4 are shown in the figure, this does not indicate one file, and a shooting scene of several minutes includes more image information units. Here, images 1 to 4 are shown for the sake of explanation, but thereafter, the above is repeated until the reproduction of the information of the file is completed. First, time periods 1 to 4 in FIG. 2 will be described. At time 1, the video recording 1 on the disk-type recording medium 102 is reproduced by the medium recording / reproducing means 106. The reproduced video 1 is recorded / reproduced by the recording / reproduction processing means 10.
3, a semiconductor recording medium 102 as a second recording medium.
Will be recorded. At this time, the information of the video 1 is divided into a plurality of video information recording areas (or referred to as recorded areas of recorded information) divided and mapped in a semiconductor recording medium, and a plurality of audio information recording areas (or additional recorded information). Recording area) is recorded in a certain video information recording area. The information transfer speed for reproducing or recording the information of the video 1 is set higher than the information transfer speed at the time of reproducing the video information. In FIG. 2, the reproduction from the disk-type recording medium and the recording on the semiconductor recording medium are shown almost at the same time. However, actually, the recording on the semiconductor recording medium is slightly delayed due to the recording / reproducing processing time, the interface transfer time, and the like. However, it is ignored in FIG. Next, the video 1 recorded on the semiconductor recording medium 102 from time 2 to time 4
Is reproduced through the video information output means 108. At this time, the transfer speed of the reproduction is set to the information transfer speed at the time of reproducing the video information, so that the reproduction time is longer than the recording time as described above. At time 4, before the reproduction of the information of the video 1 ends, the reproduction of the information of the video 2 from the disk-type recording medium starts, and almost simultaneously with this, the recording to the semiconductor recording medium starts. In FIG. 2, the semiconductor recording medium 10
There is a period in which the recording of video 2 and the reproduction of video 1 are performed at the same time on the second, but this is done by using a plurality of video information recording areas mapped and divided in the semiconductor recording medium 102 as described above. While recording in a certain recording area,
Control is performed so that reproduction is performed in another recording area. This control uses the system control means 111 and the recording / reproduction processing means 103
Is done through Almost simultaneously with the reproduction of the video 1, the audio information 1, which is additional recording information, is subjected to recording processing by the audio information input means 105 and the recording / reproduction processing means 103 in FIG. It is recorded in one of the recording areas. On the other hand, in the disk-type recording medium 101, the medium recording / reproducing means 106 scans around the recording position of the video 2 without any particular operation during the time 2 to 3. Next, time 5 to 7 will be described. From time 5 to 7, the information of the video 2 recorded on the semiconductor recording medium 102 is reproduced through the video information output means 108. Since the reproduction transfer speed at this time is set to the information transfer speed at the time of reproducing the video information, the reproduction time is longer than the recording time as described above. Further, before the reproduction of the information of the video 2 ends at time 7, the reproduction of the information of the video 3 from the disk-type recording medium starts, and almost simultaneously with this, the recording to the semiconductor recording medium starts. Playback of video 2 and video 3
Is simultaneously performed using a plurality of video information recording areas that are mapped and divided in the semiconductor recording medium 102 in the same manner as described above, but since the recording and reproduction of the video 1 has already been completed,
The recording of the video 3 may use the recording area where the video 1 was recorded. Thereby, the memory use efficiency of the semiconductor recording medium is increased, and the memory capacity can be reduced. Further, almost at the same time as the reproduction of the video 2, the audio information 2, which is the additional recording information, is transmitted from the audio information input means 105 of FIG.
After performing the recording process at 03, the audio information is recorded in a recording area other than the audio information recording area where the audio information 1 is recorded, among the plurality of audio information recording areas of the semiconductor recording medium 102. On the other hand, in the disk-type recording medium 101, the medium recording / reproducing means 106 records the audio information 1 on the disk-type recording medium 101 between times 5 and 6. At this time,
Since the audio information 1 is recorded at a predetermined position on a predetermined disk-type recording medium, after reproducing the video 2, the medium recording / reproducing means 106 moves on the disk to the predetermined position. Hereinafter, this operation is referred to as head seek. After the head seek is completed, the audio information 1 is reproduced from the semiconductor recording medium 102, and almost simultaneously with this, the audio information 1 is recorded on the disk type medium. Since the amount of audio information is smaller than that of video information, the reproduction and recording are completed in a short time. After the recording is completed, the recording / reproducing means 106
Performs head seek again to reproduce the video 3, moves on the disk to the recording position of the video 3, and reproduces the video 3. Next, time 8 to 10 will be described. From time 8 to 10, the information of the video 3 recorded on the semiconductor recording medium 102 is reproduced through the video information output means 108. Since the reproduction transfer speed at this time is set to the information transfer speed at the time of reproducing the video information, the reproduction time is longer than the recording time as described above. At time 10, before the reproduction of the information of the video 3 ends, the reproduction of the information of the video 4 from the disk-type recording medium starts, and almost simultaneously with this, the recording to the semiconductor recording medium starts. The reproduction of the video 3 and the recording of the video 4 are performed simultaneously by using a plurality of video information recording areas mapped and divided in the semiconductor recording medium 102 in the same manner as described above. The recording 4 may use the recording area where the video 2 is recorded. Further, audio information 3 as additional recording information is recorded on the semiconductor recording medium 102 almost simultaneously with the reproduction of the video 3. Recording of the audio information 3 and reproduction of the audio information 2 are performed at the same time using a plurality of audio information recording areas divided and mapped in the semiconductor recording medium 102 in the same manner as described above. Since the recording and reproduction of the audio information 1 have been completed, the recording of the audio information 3 may use the recording area where the audio information 1 is recorded. On the other hand, in the disc type recording medium 101, the medium recording / reproducing means 106
During the period, the audio information 2 is recorded on the disk-type recording medium 101. At this time, similarly to the above, the head seek is performed after the reproduction of the video 3, and the audio information 2 is recorded on the disk type medium. Recording / reproducing means 10 after recording is completed
Numeral 6 performs head seeking again to reproduce the video 4, moves on the disk to the recording position of the video 4, and reproduces the video 4. Thereafter, the above is repeated until the file information is completed. The recording and playback timing, and playback,
The control of the recording information transfer speed and the like are performed by the system control unit 111 and the recording / reproduction timing adjustment unit 107 in FIG.

FIG. 3 shows an information recording position on the disk-type recording medium 101 as the first recording medium when audio information is added by the above method. The disk-type recording medium 101 of FIG.
In, information is recorded in a spiral, and the disc rotates in the direction of the arrow. As shown in FIG. 3, the video information and the additionally recorded audio information are continuously recorded, and do not require a seek operation in reproduction. The figure shows an example in which the information is recorded in a spiral, but the information is not limited to this and may be recorded on concentric circles. However, the video information and the additionally recorded audio information are continuously arranged.

FIG. 4 shows an embodiment in which the information structure in a file recorded on a disk-type recording medium as the first recording medium in FIG. 3 is one-dimensionally shown. As described above, for example, when a certain shooting scene for several minutes is recorded as one file on the first recording medium, the file includes a plurality of video information units and audio information units. Therefore, FIG. 4 shows images 1 to 3, but this does not indicate one file, and a shooting scene of several minutes includes more image information units. Here, images 1 to 3 are shown for explanation,
Thereafter, the above is repeated until the reproduction of the file information is completed. Also, CH1 and CH2 in the figure indicate audio recording areas at the time of shooting, and stereo or bilingual recording can be performed. FIG. 4A shows the information structure in the file before the additional recording, and the gray part is the recording area for additional recording, which is for post-recording. FIG. 4B shows the information structure in the file after the additional recording, and the audio information 1 is recorded in the recording area for additional recording. In the above description of FIGS. 1 to 3,
There is no particular description regarding the audio recording at the time of shooting, and the audio recording shows the case where it is performed by additional recording, but it is not limited to this, and the audio is stereo-recorded at the time of shooting and it is set as the background, Audio may be superimposed by additional recording, and so-called post-recording may be performed. However, in any case, the additional recording area is created at the time of file creation at the time of shooting regardless of the presence or absence of additional recording, and new information is recorded in the additional recording area at the time of additional recording.

As described above, according to the above-described embodiment, the recording operation and the reproducing operation for the disk-type recording medium are performed by the same means using the disk-type recording medium, and
When performing additional recording of audio information for the purpose of simultaneous playback with video information already recorded on a disk-type recording medium in a recording / reproducing device that performs recording and reproduction operations independently, the recording operation on the disk-type recording medium is performed. Thus, the reproduction of the video information as the guide information and the recording of the audio information as the new information on the disk-type recording medium can be realized at the same time without simultaneously performing the reproduction operation and the reproduction operation. Further, the new information is converted into medium recording information by recording processing means provided in the recording / reproducing device, and is written in advance on the semiconductor recording medium as the second recording medium by the medium recording / reproducing means. The data is read from the semiconductor recording medium and recorded at a predetermined position on the disk-type recording medium. The recording area of the new information recorded on the disk-type recording medium is provided at the time when the already-recorded information is recorded in advance, and the recorded information is different from the information structure recorded on the disk-type recording medium. Place in continuous positions. As a result, the recorded information and the newly recorded information can be easily managed on the disk-type medium, and the simultaneous reproduction of the recorded information and the new recorded information can be easily performed.

In the above description, the recording area for the additional information is provided when the already recorded information is recorded in advance. For example, even when the additional recording is not performed, it is necessary to secure the recording area, which is wasteful.

Next, a case will be described in which an additional recording area is not provided in the file created at the time of shooting, and an additional recording area is provided on the file later. This will be described with reference to FIGS. The horizontal axis in FIG. 5 represents time, and the start is when video 1 to 4 of video information recorded on the disk type recording medium as the first recording medium is reproduced, and audio information is additionally recorded thereon. Is shown. The above-mentioned images 1 to 4 indicate a certain image information unit. For example, when a certain shooting scene for several minutes is recorded as one file on the first recording medium, a plurality of image information units and audio information are included in the file. Units are included. In the figure, images 1 to 4 are shown,
This does not indicate one file, and a shooting scene of several minutes includes more video information units. Here, images 1 to 4 are shown for the sake of explanation, but thereafter, the above is repeated until the reproduction of the information of the file is completed. First, time periods 1 to 4 in FIG. 2 will be described. Time 1
In the step (1), the medium 1 as recorded information on the disk type recording medium 102 is reproduced by the medium recording / reproducing means 106. The reproduced video 1 is recorded on a semiconductor recording medium 102 as a second recording medium through a recording / reproducing processing unit 103. At this time, the information of the video 1 is recorded in a certain video information recording area among a plurality of video information recording areas mapped and divided in a semiconductor recording medium and a plurality of audio information recording areas. The information transfer speed for reproducing or recording the information of the video 1 is set higher than the information transfer speed at the time of reproducing the video information. Next, from time 2 to 4, the information of the video 1 recorded on the semiconductor recording medium 102 is reproduced through the video information output means 108. At this time, the transfer speed of the reproduction is set to the information transfer speed at the time of reproducing the video information, so that the reproduction time is longer than the recording time as described above.
At time 4, before the reproduction of the information of the video 1 ends, the reproduction of the information of the video 2 from the disk-type recording medium starts, and almost simultaneously with this, the recording to the semiconductor recording medium starts. In FIG. 5, there is a period in which recording of the video 2 and reproduction of the video 1 are performed at the same time on the semiconductor recording medium 102.
Using a plurality of video information recording areas divided and mapped inside, control is performed such that recording is performed in one recording area and reproduction is performed in another recording area. This control is performed through the recording / reproduction processing means 103 using the system control means 111. Further, almost at the same time as the reproduction of the video 1, the audio information 1, which is the additional recording information, is input to the audio information input means 105 of FIG.
After performing the recording processing by the recording / reproducing processing means 103 from
It is recorded in one of a plurality of audio information recording areas of the semiconductor recording medium 102. On the other hand, in the disk-type recording medium 101, the medium recording / reproducing means 106 scans around the recording position of the video 2 without any particular operation during the time 2 to 3. Next, time 5 to 7 will be described. The video 2 recorded on the semiconductor recording medium 102 at times 5 to 7
Is reproduced through the video information output means 108. Since the reproduction transfer speed at this time is set to the information transfer speed at the time of reproducing the video information, the reproduction time is longer than the recording time as described above. At time 7, before the reproduction of the information of the video 2 ends, the reproduction of the information of the video 3 from the disk-type recording medium starts.
Recording to 2 starts. The reproduction of the video 2 and the recording of the video 3 are performed simultaneously by using a plurality of video information recording areas mapped and divided in the semiconductor recording medium 102 as described above, but since the recording and reproduction of the video 1 have already been completed, the video The recording of 3 may use the recording area where the video 1 is recorded. Thereby, the memory use efficiency of the semiconductor recording medium is increased, and the memory capacity can be reduced. Further, almost simultaneously with the reproduction of the video 2, the audio information 2, which is the additional recording information, is shown in FIG.
From the voice information input means 105 to the recording / reproducing processing means 103
After the recording process described above, the audio information is recorded in a recording area other than the audio information recording area where the audio information 1 is recorded, among the plurality of audio information recording areas of the semiconductor recording medium 102.
On the other hand, in the disc-type recording medium 101, the medium recording / reproducing means 106 re-records the video 1 and records the audio information 1 on the disc-type recording medium 101 between times 5 and 6. At this time, the video 1 and the audio information 1 are overwritten on an area including the video 1 which is recorded information. Therefore, after the reproduction of the video 2, the medium recording / reproducing means 106 performs a head seek on the disk to the recording start position of the video 1 which is the recorded information. After the head seek is completed, the reproduction of the video 1 and the reproduction of the audio information 1 are performed from the semiconductor recording medium 102, and the recording of the video 1 and the recording of the audio information 1 on the disk-type medium are performed almost simultaneously. After the recording is completed, the recording / reproducing means 106 performs a head seek again to reproduce the video 3, moves on the disk to the recording position of the video 3, and reproduces the video 3. In the above case, since both video 1 and audio information 1 are recorded, the recording time is long. Therefore, it is necessary to shorten the time required for head seek, and high-speed seek is required. As described above, the reproduction of the video 1 on the semiconductor recording medium is performed twice, and the information transfer speed of the reproduction is also different. Thereafter, the above-mentioned repetition continues from time 8 to time 10 until the end of the file. The recording and reproduction timing and the control of the information transfer speed of reproduction and recording are performed by the system control unit 111 and the recording and reproduction timing adjustment unit 107 in FIG.

FIG. 6 shows an embodiment in which the structure of information recorded on the disk-type recording medium 101 recorded by the method shown in FIG. 5 is shown one-dimensionally. As described above, for example, a shooting scene of several minutes is stored as one file in the first file.
, The file contains a plurality of video information units and audio information units. Therefore, FIG.
Shows images 1 to 3, but this does not indicate one file, and a shooting scene of several minutes includes more image information units. Here, images 1 to 3 are shown for explanation, but thereafter, the above is repeated until the information reproduction of the file is completed.
FIG. 6A shows the information structure in the file before the additional recording, and FIG. 6B shows the information structure in the file after the additional recording. After the additional recording, the amount of information in the file is increased by the amount of audio information. Also, CH1 and CH2 in the figure indicate audio recording areas at the time of shooting, and stereo or bilingual recording can be performed. In the above description, audio recording at the time of photographing is not particularly described, and the case where audio recording is performed by additional recording is shown, but the present invention is not limited to this. May be set as a background, and audio may be superimposed by additional recording, so-called post-recording recording. However, in this case, an additional recording area is created in the file only at the time of additional recording.

FIG. 7 shows another embodiment of the structure of information recorded on the disk-type recording medium 101 recorded by the method shown in FIG. 5 one-dimensionally. Fig. 7 (1)
Is the information structure in the file before the additional recording.
(2) is the information structure in the file after the additional recording. After the additional recording, the amount of information in the file increases by the amount of the audio information, but the video information is compressed by the increased amount to make the entire amount of information equal. This compression processing is performed by the recording / reproducing processing means 103 in FIG. In this case, even if the additional recording is performed, the information amount of the file does not change, so that the additional recording is easily performed even on the disk-type recording medium 101 in which a large number of files are continuously recorded. In general, the amount of video information is several tens of times larger than that of audio information. Therefore, even if the amount of additional audio information is compressed, the degradation in image quality due to compression is almost negligible. Also, CH1 and CH2 in the figure indicate audio recording areas at the time of shooting, and stereo or bilingual recording can be performed. In the above description, the audio recording at the time of shooting is not particularly described, and the case where the audio recording is performed by additional recording is shown, but it is not limited thereto.
The sound may be recorded in stereo in advance at the time of shooting, the background may be set as a background, and the sound may be superimposed by additional recording, so-called post-recording.

FIG. 8 shows another embodiment of the structure of information recorded on the disk-type recording medium 101 recorded by the method shown in FIG. 5 in a one-dimensional manner. CH in the figure
1, CH2 indicates an audio recording area at the time of shooting, and stereo or bilingual recording can be performed. FIG. 8A shows the information structure in the file before the additional recording, and FIG. 8B shows the information structure in the file after the additional recording. The audio information after the additional recording is combined with the CH2 audio and recorded in the CH2 audio area. In this case, there is no change in the amount of information in the file. Therefore, even if the additional recording is performed, the information amount of the file does not change, so that the additional recording can be easily performed even on the disk-type recording medium 101 in which a large number of files are continuously recorded. In the above description, the case where the image is combined and recorded with CH2 is shown. However, the present invention is not limited to this, and the image may be combined and recorded with CH1. The synthetic recording is performed by the recording / reproducing processing means 103 in FIG. 1, and synthesizes and records the sound of CH1 or CH2 and the sound of the additional recording. Or CH1 without synthesis
Alternatively, the sound of CH2 may be rewritten.

As described above, in the above description, the recording area of the additional information does not need to be provided when the already recorded information is recorded in advance, and the efficiency of the recording file is improved.

[0032]

According to the present invention, there is provided a recording / reproducing apparatus which performs a recording operation and a reproducing operation on a disk-type recording medium by using the same means, and independently performs the recording operation and the reproducing operation. When performing additional recording of new information for the purpose of simultaneous reproduction with already-recorded information already recorded on the type recording medium, the new information is recorded without simultaneously performing a recording operation and a reproduction operation on the disk type recording medium. At the same time, reproduction of the recorded information serving as guide information and recording of the new information on a disk-type recording medium can be simultaneously realized. A recording area for new information to be recorded on the disk-type recording medium is provided at the time when the already-recorded information is recorded in advance, and the already-recorded information is a continuous area in the information structure recorded on the disk-type recording medium. To the position of. As a result, the recorded information and the newly recorded information can be easily managed on the disk-type medium, and the simultaneous reproduction of the recorded information and the new recorded information can be easily performed. Alternatively, the recording area of the new information recorded on the disc type recording medium is
It is not provided when previously recorded information is recorded in advance, but is provided when new information is additionally recorded. However, in this case as well, the recorded information is recorded at a continuous position on the information structure recorded on the disk-type recording medium,
The already recorded information is re-recorded together with the newly recorded information while overwriting the already recorded information on the disk type medium. However, since the amount of information is larger by the amount of new information than the already recorded information, the amount of information recorded on the disk-type recording medium is larger. Alternatively, the recorded information is compressed, and the compressed recorded information and the newly recorded information are re-recorded while overwriting the recorded information on the disk type medium. In this case, the information amount is larger by the new information than the recorded information,
Since the already-recorded information is compressed, the amount of information recorded on the disk-type recording medium may be equal, or may be smaller depending on the quality of the information. Alternatively, new information is recorded by synthesizing or rewriting a part of previously recorded information. According to the above configuration, the recorded information and the newly recorded information can be easily managed on the disk-type medium, and the simultaneous reproduction of the recorded information and the newly recorded information can be easily performed. Further, since the information amount does not change even when the additional recording is performed, the additional recording is facilitated even on a disk-type recording medium in which a large number of files are continuously recorded. Further, since only the recorded information for recording the new information is rewritten, it is not necessary to provide a recording area for the new information when the recorded information is recorded in advance, and the recording efficiency of the disk-type recording medium is improved.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an embodiment of the present invention, and is a diagram illustrating a system configuration of a recording / reproducing apparatus.

FIG. 2 is a diagram showing an operation timing of recording and reproduction according to the embodiment of the present invention.

FIG. 3 is a diagram showing an information recording arrangement on a disk-type recording medium according to an embodiment of the present invention.

FIG. 4 is a diagram showing an in-file information structure according to the embodiment of the present invention.

FIG. 5 is a diagram showing an operation timing of recording and reproduction according to another embodiment of the present invention.

FIG. 6 is a diagram showing an in-file information structure according to another embodiment of the present invention.

FIG. 7 is a diagram showing an in-file information structure according to another embodiment of the present invention.

FIG. 8 is a diagram showing an information structure in a file according to another embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 recording / reproducing device 101 disk-type recording medium 102 semiconductor recording medium 103 recording / reproducing processing unit 104 video information input unit 105 audio information input unit 106 Medium recording / reproducing means 107 ・ ・ ・ Reproduction information storage means 108 ・ ・ ・ Video information output means 109 ・ ・ ・ Audio information output means 110 ・ ・ ・ Disk drive means 111 ・ ・ ・ System control means

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tamotsu Ito 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Yokohama, Japan Inside the Multimedia Systems Development Division of Hitachi, Ltd. (72) Inventor Kenji Sano Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa No.292 Inside Hitachi Multimedia Systems Development Division

Claims (7)

[Claims] 1. A recording / reproducing apparatus which uses a first recording medium, performs a recording operation and a reproducing operation on the first recording medium by the same means, and independently performs a recording operation and a reproducing operation. When performing additional recording of new information for the purpose of simultaneous reproduction with recorded information already recorded on a recording medium, the recorded information serving as guide information for recording the new information is stored in a recording / reproducing apparatus. The first recording medium is recorded in advance on a second recording medium provided, and the recorded information is reproduced from the second recording medium when the new information is actually recorded on the first recording medium. Without simultaneously performing the recording and playback operations on
Means for simultaneously realizing reproduction of the recorded information and recording of the new information, wherein a recording position of the new information is continuous with the recorded information and an information structure to be recorded on the first recording medium. A recording / reproducing method having a means for arranging at a position, and a recording / reproducing apparatus using the same. 2. The method according to claim 1, wherein the new information is recorded in advance on a second recording medium provided in the recording / reproducing apparatus, stored to a certain extent, read out from the second recording medium, and read out from the first recording medium.
2. A recording / reproducing method according to claim 1, further comprising means for recording at a predetermined position on the recording medium. 3. The information transfer rate according to claim 1, wherein information is recorded on a second recording medium provided in the recording / reproducing apparatus, and the information transfer rate is used when information is reproduced from the second recording medium. 2. The recording / reproducing method according to claim 1, wherein the recording / reproducing method is different. 4. The recording medium according to claim 1, wherein a recording area for new information to be recorded on the first recording medium is provided when previously recorded information is recorded in advance. 2. The recording / reproducing system according to claim 1, wherein the recording / reproducing system and the recording / reproducing apparatus using the same are arranged at a continuous position in the information structure to be recorded on the first recording medium and the recorded information. 5. The recording medium according to claim 1, wherein a recording area for new information to be recorded on said first recording medium is provided at a time when said new information is additionally recorded. 2. The recording / reproducing method according to claim 1, wherein the information is re-recorded while overwriting the already recorded information on the first recording medium together with the information. 6. The recording method according to claim 6, wherein the recorded information is compressed, and the compressed recorded information and new recorded information are re-recorded while overwriting the recorded information on the first recording medium. 7. The recording / reproducing method according to claim 6, wherein the recording / reproducing method uses the recording / reproducing method. 7. The method according to claim 6, wherein the new information is re-recorded by overwriting the already recorded information on the first recording medium by combining or rewriting with a part of the already recorded information. A recording / reproducing method according to claim 6, and a recording / reproducing apparatus using the same.