JPH07154740A - Recording medium, recording method, recording device and editing method - Google Patents

Abstract

PURPOSE:To provide a recording medium, recording method, recording device and editing method for reducing labor and time required for editing. CONSTITUTION:Index information PS1-PS60 for relevant video information AR1-AR60 provided by reducing the information quantity of the relevant video information AR1-AR60 is recorded in a first recording medium 3 together with the video information AR1-AR60. Then, only the index information PS1-PS60 in the first recording medium 3 is copied on a second recording medium 40 and based on the index information PS1-PS60 copied on the second recording medium 40, the editing data of the video information AR1-AR60 recorded in the first recording medium 3 are prepared so as to shorten the time required for editing.

Description

Detailed Description of the Invention

[0001]

[Table of Contents] The present invention will be described in the following order. Field of Industrial Application Conventional Technology Problems to be Solved by the Invention Means for Solving the Problems (FIGS. 1 to 9) Action (FIGS. 1 to 9) Example (1) Overall Configuration (FIGS. 1 and 2) ) (2) Recording format (Fig. 3) (3) Creation of editing disk (Figs. 4 and 5) (4) Creation of editing data (Figs. 6 to 8) (5) Effects of the embodiment (Fig. 4) (6) Other Examples (FIG. 9) Effects of the Invention

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium, a recording method, a recording device, and an editing method, and more particularly, to a recording medium, a recording method, a recording device, and an editing method capable of remarkably reducing labor and time required for editing. Suggest a method.

[0003]

2. Description of the Related Art Conventionally, there is offline editing as a method for editing video information recorded on a predetermined recording medium. In offline editing, the video information recorded on the original tape at the shooting site is temporarily re-recorded on another recording tape (hereinafter referred to as the editing tape), and editing data such as editing points is created on the editing tape. , A master tape is created based on this edited data. As a result, in offline editing, a desired master tape can be reliably created without accidentally erasing or rewriting important recording information on the original tape.

[0004]

However, in the offline editing, there is a problem that it takes time and labor to re-record the information on the original tape on the editing tape.
In addition, pre-roll is indispensable when creating edit data using an editing tape, and it takes time to create the edit data because it takes time to access the target edit point. It was unavoidable.

As one method for solving such a problem,
There is a method in which the information on the original tape is once copied to a recordable disk-shaped recording medium, and the edit data is created using the copy information on the disk-shaped recording medium. In this way, since the editing point can be accessed in a short time, the editing time can be shortened.

However, in order to record all the information on the original tape onto the disk-shaped recording medium, a considerable recording capacity is required as the disk-shaped recording medium, and it is practically difficult to realize a disk-shaped recording medium satisfying this recording capacity. There is a problem. Even when using a disk-shaped recording medium,
It was unavoidable that copying from the original tape to the disk-shaped recording medium took a considerable time as in the case of using the editing tape.

The present invention has been made in consideration of the above points, and proposes a recording medium, a recording method, a recording apparatus, and an editing method which can reduce the labor and time required for editing. .

[0008]

In order to solve such a problem, in the present invention, first recording areas AR1 and AR in which video and / or audio information is compressed and recorded in the time axis direction are recorded.
Second, the index information obtained by reducing the amount of video and / or audio information is recorded.
, And the second recording areas PS1, PS2, ... Are the first recording areas AR obtained by compressing and recording video and / or audio information.
1 and AR2, and so on, in an empty area adjacent to the area.

In the present invention, the first areas AR1, AR2, ... Of the predetermined recording mediums 3, 63, 73, ...
Video and / or audio information is compressed and recorded in the time axis direction,
An index of video and / or audio information obtained by reducing the information amount of the video and / or audio information in an empty area adjacent to the first recording areas AR1, AR2, ... Obtained by compressing and recording the video and / or audio information. Make sure to record the information.

Further, in the present invention, in the recording device 1 for recording the video and / or audio information on the predetermined recording medium 3, 63, 73, the video and / or audio information is reduced by reducing the information amount of the video and / or audio information. Index information forming means 6 and 11 for forming the index information, recording means 17 for recording the video and / or audio information and the index information on the recording media 3, 63 and 73, and the video and / or audio information and the index information. The storage means 14 outputs the video and / or audio information and the index information to the recording means 17 in a predetermined order by storing them for a predetermined period.

Further, in the present invention, the storage means 14 is
The video and / or audio information is output at a transmission rate higher than that of the actual data D1, and the recording unit 17 has video and / or audio at a recording density corresponding to the transmission rate of the video and / or audio information output from the storage unit 14. Information is recorded, and the index information is recorded in the empty areas of the recording media 3, 63, 73 obtained as a result.

Further, in the present invention, video and / or audio information and index information obtained by reducing the information amount of the video and / or audio information are recorded on a predetermined recording medium 3, 63, 73, and the index information is recorded as the index information. Based on this, edit data of video and / or audio information is created.

Further, in the present invention, the video and / or audio information and the index information are stored in the first recording mediums 3, 63 and 7.
No. 3, and only the index information recorded on the first recording mediums 3, 63, 73 is copied to the second recording medium 40, and the video and the video are recorded based on the index information copied on the second recording medium 40. Alternatively, edit data of voice information is created.

Further, in the present invention, the first recording media 3, 63, 73 are tape-shaped recording media and the second recording media are
The recording medium 40 is a disc-shaped recording medium, and when the index information of the first recording mediums 3, 63, 73 is copied to the second recording medium 40, the first recording mediums 3, 63, 7
The video and / or audio information recorded in No. 3 is skipped, only the index information is reproduced and copied to the second recording medium 40.

[0015]

In the first invention, the first recording area AR
1, AR2, ... And the second recording areas PS1, PS2 ,.
Since the recording area including ... becomes equal to the recording area required when the video and / or audio information is not compressed and recorded, the video and / or audio information and the index information of the video and / or audio information are stored in the predetermined recording area. When the editing work is performed based on the index information recorded on the recording medium, the contents of the video information can be quickly and accurately known only by listing the screen of the monitor 53. The time required for editing can be shortened.

Similarly, in the second invention, the first recording areas AR1, AR2, ... And the second recording areas PS1, P2.
The recording area including S2, ... Is equal to the recording area required when the video and / or audio information is not compressed and recorded, so that the video and / or audio information and the video and / or audio information are stored in the predetermined recording area. The index information can be recorded, and the time required for editing can be shortened if the editing operation is performed based on the index information of the recording mediums 3, 63, 73 created by this method.

In the third invention, the video and / or audio information and the index information are recorded on the recording mediums 3, 63 and 7.
3 can be recorded in a predetermined area, and as a result, edit data is created using the index information, the time required for editing can be shortened.

In the fourth invention, the recording medium 3,
Video and / or audio information and index information can be recorded in a predetermined recording area of 63, 73, and if editing work is performed based on the index information of this recording medium 3, 63, 73, the time required for editing can be shortened. can do.

In the fifth aspect of the invention, if the edit data of the video and / or audio information is created based on the index information, the edit data can be created quickly and easily.

In the sixth invention, of the video and / or audio information and index information recorded on the first recording medium 3, 63, 73, only the index information is the second information.
By copying the data on the recording medium 40, the time required for copying can be shortened, and the time required for editing can be further reduced.

Further, in the seventh aspect of the invention, since the second recording medium 40 is a disk-shaped recording medium, the access to the editing point at the time of creating the editing data becomes faster, so that the time required for editing is further reduced. It can be shortened.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

(1) Overall Configuration In FIGS. 1 and 2, reference numeral 1 generally indicates a recording / reproducing system used in a video editing system according to the present invention, and a video signal S1 imaged by an imaging section (not shown). And the audio signal S2 and the index information of the video signal S1 and the audio signal S2 are recorded on the magnetic tape 3 via the recording system 2.

The video signal S1 picked up by the image pickup section is input to the analog digital conversion circuit (A / D) 5. The digital video signal D1 digitally converted by the analog digital conversion circuit 5 is sent to the index image creation processing circuit 6 and the frame memory 7, respectively. The frame memory 7 performs a field-to-frame image conversion process for intra-frame recording on the digital video signal D1 and a blocking process for compression. The index image creation processing circuit 6 performs a thinning process on the digital video signal D1 for each predetermined pixel and for each predetermined line to obtain 1/8 of the digital video signal D1.
The index image data D2 having the data amount is created.

The video data D2 and D3 generated by the index picture creation processing circuit 6 and the frame memory 7 are input to the selector 8, which selects the video data D3.
One frame of index image data D2 is periodically output for each frame. By the way, one frame of the index image data D2 output here is the video data D
A reduced image of 16 fields (8 frames) of 3 is included.

At this time, the selector 8 is adapted to increase the transmission rate of the output data D4 by 9/8 times the transmission rate of the input data D2 and D3. As a result, the recording system 2
In the above, the video data D2 and D3 are compressed in the time axis direction and recorded on the magnetic tape 3. In other words, the recording system 2 is adapted to record the index image data D2 in the free space in the longitudinal direction of the magnetic tape 3 obtained by compressing and recording the video data D3 in the time axis direction. The video data D4 output from the selector 8 is input to the subsequent compression encoding block 9 where it is compressed into a predetermined data amount recordable on the magnetic tape 3.

On the other hand, the input audio signal S2 is converted into a digital audio signal D6 by the analog digital conversion circuit 10.
And the digital audio signal D6 is sent to the audio compression coding block 11 and the selector 12, respectively. The voice compression coding block 11 performs 1/8 compression coding processing on the digital voice signal D6 and sends it to the selector 12. The selector 12 is the selector 8 described above.
Similarly, an error correction code adding circuit 1 is provided which periodically follows the input digital audio signal D6 and compressed audio data D7.
Send to 3.

The error correction code adding circuit 13 adds an error code to the video data D5 and the audio data D8, and sends this data D9 to the subsequent temporary recording medium 14. The temporary recording medium 14 is a RAM (Random Access Memor).
y) The configuration is different from normal video data and audio data (hereinafter referred to as main recording information) and video data and audio data compressed to 1/8 (hereinafter referred to as index information). Temporarily stored in the area,
It is designed to be buffered.

Here, writing and reading to and from the temporary recording medium 14 are controlled by the memory controller 15. The timing of writing and reading is performed in synchronization with the control signal S3 sent from the system controller 16 to the recording / reproducing unit 17. That is, in the recording system 2, by reading the data stored in the temporary recording medium 14 and driving the recording / reproducing unit 17 so as to be synchronized with the transmission rate at this time, the above-mentioned main recording information and index are recorded on the magnetic tape 3. Record the information. In the case of the embodiment, the main recording information corresponding to one minute in real time and the index information corresponding thereto are alternately read from the temporary recording medium 14. The system controller 16 is controlled by the operation signal S4 sent from the user interface 18.

The recording signal D10 read from the temporary recording medium 14 is sent to the channel coding circuit 19,
Here, after recording coding for recording on the magnetic tape 3, it is converted into a signal recordable on the magnetic tape 3 in the recording / reproducing unit 17 in the recording amplifier 20.

In practice, in the recording system 1, in addition to the normal main recording information, the index information compressed to 1/8 of this main recording information is recorded on the magnetic tape 3. Therefore, the recording information is recorded on the magnetic tape 3 at a transmission rate 9/8 times that of the standard recording system.

The recording information thus recorded on the magnetic tape 3 is reproduced by the reproducing system 4. That is, the reproduction system 4 amplifies the reproduction data obtained by the magnetic head (not shown) of the recording / reproducing unit 17 by the reproduction amplifier 21. The amplified reproduction data is sent to the data extraction circuit 22. The data extraction circuit 22 generates a data reproduction clock from the reproduction data, extracts predetermined data from the reproduction data based on the data reproduction clock, and sends this data to the channel decoding circuit 23. The channel decoding circuit 23 restores the data encoded in the channel coding circuit 19 to the digital data before the channel coding, and buffers the data D11 in the temporary recording medium 14.

The data written in the temporary recording medium 14 is main recording information and index information periodically inserted between the main recording information, and each of these pieces of information depends on the operation mode of the recording / reproducing system 1. It is selectively read based on the address signal sent from the memory controller 15.

The reproduced data D12 read from the temporary storage medium 14 is subjected to error correction processing in the error correction processing circuit 24, and of the error-corrected reproduced data obtained thereby, the video data D13 is compressed and decoded. It is sent to block 25. On the other hand, of the audio data after error correction, the normal audio data D14 is output as the audio signal S5 via the digital-analog conversion circuit 26, and the compressed audio data compressed to 1/8 is audio compression decoded. It is compression-decoded via the conversion block 27 and output as index image audio data D _AUD .

The video data D13 input to the compression / decoding block 25 is compression-decoded by the compression / decoding block 25, and then input to the subsequent frame memory 28. Here, deblocking of the compression / decoding data is performed. Is done. Video data D output from the frame memory 28
15 is sent to the digital analog conversion circuit 29 and the index image output processing circuit 30, and the digital analog conversion circuit 29 analog-converts the video data D15 and outputs the video signal S6. The index image output processing circuit 30 converts the video data D15 into a data format for a computer and outputs it as index image data D _VD .

As a result, the index image can be viewed on an external monitor through the digital analog conversion circuit 29, and can be output to the external computer through the index image output processing circuit 30.

In the case of the embodiment, the index image data D _VD and the index image audio data D _AUD output from the index image output processing circuit 30 and the audio compression / decoding block 27 are integrated into a computer (not shown). And recorded on the hard disk by the computer.

(2) Recording Format Thus, the recording / reproducing system 1 is adapted to record the main recording information and the index information on the magnetic tape 3 by the format as shown in FIG. That is, recording / reproducing system 1
Is the main recording information recording area AR, as shown in FIG.
1, 1800 frames of main record information is recorded, and then the main record information record area A is recorded in the subsequent index information record area PS1.
Index information corresponding to 1800 frames of main record information recorded in R1 is recorded. Here, the index information has a data amount 1/8 that of the main record information,
8 frames of main record information can be recorded in 1 frame, and as a result, as shown in FIG. 3B, the index information corresponding to 1800 frames of main record information can be recorded.
It can be recorded within 25 frames. Here, 16 fields (8 frames) of index images are recorded in one frame of the index information recording area PS. Incidentally, in the recording / reproducing system 1, one frame of main recording information is recorded on two recording tracks by the helical scan.

In practice, in the recording / reproducing system 1, 1800 frames of main record information are recorded in each of the recording areas AR1, AR2, AR3, ... In one minute, and then the corresponding index information is recorded in the recording area. PS1, PS2,
Record in 7.5 seconds on PS3 and so on. Here, in each unit recording area of the index information recording area PS, as shown in FIG.
As shown in (C), one field of index image data VD _IND and the corresponding compressed audio data AUD
_{The INDs} are recorded so that they are adjacent to each other.

(3) Creation of Editing Disc Here, when performing the off-line editing, as shown in FIG. 4, the recording information is recorded in the index information recording areas PS1 to PS60 of the recording information on the magnetic tape 3 which is an original tape. Only the created index information is copied to the hard disk 40. At this time, the recording / reproducing system 1
As shown in FIG. 5, by skipping the main recording information recording area AR (AR1, AR2, ...) Of the magnetic tape 3 and reproducing only the index information recording area PS (PS1, PS2 ,. A high-speed copy process for copying only information to the hard disk 40 is performed. As a result, in the recording / reproducing system 1, the index information of the magnetic tape 3 can be copied to the hard disk 40 in a short time, and as a result, the time required for editing can be shortened.

In the recording / reproducing system 1 of the embodiment, by accessing between the index information recording areas PS in 5 seconds and reproducing the index information recording area PS in 7.5 seconds, the main recording on the original tape is performed as in the conventional case. It is possible to create the hard disk 40 for editing in about 1/5 (≈13 / 60) of the time as compared with the case of copying the information to the recording medium for editing in real time.

(4) Creation of Editing Data FIG. 6 shows the configuration of the editing system according to the embodiment.
The master tape is prepared by loading the magnetic tape 3 obtained by 0 into the reproducing device 51 and copying only the desired information from the main recording information of the magnetic tape 3 by the editing device 52 having a recording function. Has been done.

At this time, the editing device 52 sequentially displays on the monitor 53 the index images based on the index information recorded on the hard disk 40 as described above. Therefore, the editor edits data such as cut-in points and cut-out points based on the index image displayed on the monitor 53 (for example, EDL (Edit Decision Lis).
t)) is created, and the main recording information on the magnetic tape 3 is edited based on the edited data to create a master tape.

Here, in the editing device 52, as shown in FIG. 7, the desired one of the frames FR1, FR2, ..., FR225 contained in each of the index data PS1, PS2, ..., PS60 recorded on the hard disk 40 is selected. One of them is temporarily stored in the memory and is displayed on the monitor 53.

Accordingly, as shown in FIG. 7C, for example, 16 kinds of index images included in the frame FR1 are displayed on the monitor 53, whereby the editor only needs to list the screens of the monitor 53. , You can know the contents of multiple recorded video information quickly and accurately,
The cut-in point and the cut-out point can be easily selected. Further, by using the hard disk 40 as a recording medium for editing, a desired index image can be accessed in a short time, and the cut-in point and the cut-out point can be selected in a shorter time.

Further, in the editing device 52, FIG.
As shown in FIG. 5, only a specific image of the 16 types of index images can be enlarged and displayed on the monitor 53.

When an editing tape for online editing is created, as shown in FIG. 8, the index information recording area PS is formed from the magnetic tape 3 by using, for example, a memory.
Editing tape 60 composed of only main recording information recording areas AR1, AR2, ... By deleting 1, PS2 ,.
Should be created.

(5) Effects of the Embodiments With the above configuration, the index information is recorded together with the main recording information on the magnetic tape 3 which is an original tape,
By creating the editing disk 40 by copying only the index information of the original tape, the hard disk 40 for creating the editing data can be created in a short time, and the time required for editing can be significantly shortened. You can

(6) Other Embodiments In the above-mentioned embodiment, the magnetic tape 3 has 1800
Although a case has been described in which main recording information for a frame is recorded and index information corresponding to the main recording information is recorded after the main recording information, the present invention is not limited to this. The main record information for the cut may be recorded, and the index information corresponding thereto may be recorded after the main record information for one cut. The point is to correspond to the main record information so as to be adjacent to the main record information. The index information may be recorded.

If the temporary recording medium 14 has a capacity (for example, about 32 MB × 60 = 1.8 GB) capable of recording the index information corresponding to 60 minutes of the main recording information, the main recording information and the index information are used as the respective information. It can be recorded collectively for each.

That is, as shown in FIG. 9A, if the index information is collectively stored in the temporary recording medium 14, the main recording information recording area AR is first formed, and then the magnetic tape 63 is rewound. Main recording information recording area A
The index information recording areas PS1 to PS60 corresponding to the main recording information 60 minutes can be formed at the head of R,
As a result, the main record information and index information can be collectively recorded for each information. Further, as shown in FIG. 9B, a magnetic tape 73 having index information recording areas PS1 to PS60 behind the main recording information recording area AR can be created.

If such a magnetic tape (original tape) 63 or 73 is used, the main recording information recording area AR
Since the index information recording area PS and the index information recording area PS are integrated, it is not necessary to separate the main recording information and the index information at the time of reproduction, and the index information can be copied onto the hard disk 40 by this amount in a shorter time.

If the magnetic tape 63 or 73 is used,
It is also possible to reproduce the index information recording area PS on the magnetic tape 3 as it is and create edit data based on this index information. As a result, creating a recording medium for creating edit data can be omitted. Editing work can be performed more easily and in a shorter time.

Further, in the above-mentioned embodiment, the case where the magnetic tape 3 is used as the original material for recording the main recording information and the index information is described, but the present invention is not limited to this, and the original material is, for example, a magneto-optical material. Various recording media such as a disk can be used.

Further, in the above-described embodiment, the case where the hard disk 40 is used as a recording medium for copying the index information recorded on the magnetic tape 3 has been described, but the recording medium for editing is not limited to the hard disk 40, and for example, It may be a magneto-optical disk or magnetic tape,
Various recording media can be used.

Further, in the above-described embodiment, the case where the index image data D2 is created by performing the thinning-out process in the index image creation processing circuit 6 has been described, but the present invention is not limited to this, and for example, every predetermined pixel. The index image data may be created by taking an average, and the point is that the index image may be created by reducing the data amount of the original image.

[0057]

As described above, according to the present invention, in the first recording medium, the normal video and / or audio information and the video and / or audio information obtained by reducing the information amount of the video and / or audio information can be obtained. The index information of the audio information is recorded, only the index information of the first recording medium is copied to the second recording medium, and recorded in the first recording medium based on the index information copied on the second recording medium. By creating the edited data of the created video and / or audio information, the labor and time required for editing can be shortened.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a recording apparatus according to the present invention.

FIG. 2 is a block diagram showing an embodiment of a recording apparatus according to the present invention.

FIG. 3 is a schematic diagram showing a recording format of a magnetic tape recorded by a recording / reproducing system 1.

FIG. 4 is a schematic diagram used for explaining creation of an editing disk.

FIG. 5 is a characteristic curve diagram showing an operation state of the recording / reproducing system 1 when only index data is copied from an original tape to a hard disk.

FIG. 6 is a schematic diagram showing a configuration of an editing system according to an embodiment.

FIG. 7 is a schematic diagram for explaining an operation when displaying index data of the hard disk 40 on a monitor.

FIG. 8 is a schematic diagram used to describe the creation of a tape for online editing.

FIG. 9 is a schematic diagram showing a recording form of actual recording data and index data on an original tape according to another embodiment.

[Explanation of symbols]

1 ... Recording / reproducing system, 3, 60, 63, 73 ... Magnetic tape, 6 ... Index image creation processing circuit, 11 ... Audio compression coding block, 14 ... Temporary recording medium, 17 ...
Recording / playback unit, 40 ... Hard disk, AR1 to AR
60 ... Main recording information recording area, PS1 to PS60 ... Index information recording area.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location H04N 5/7826 5/92 7734-5C H04N 5/92 D (72) Inventor Kokubun Kizumi Tokyo 6-735 Kitashinagawa, Shinagawa-ku, Tokyo Sony Corporation

Claims (7)

[Claims] 1. A first recording area in which video and / or audio information is compressed and recorded in the time axis direction, and the video and / or audio obtained by reducing the information amount of the video and / or audio information. A second recording area in which index information of information is recorded, wherein the second recording area is an empty area adjacent to the first recording area obtained by compressing and recording the video and / or audio information. A recording medium comprising: 2. A first area obtained by compressing and recording video and / or audio information in a time axis direction in a first area of a predetermined recording medium, and compressing and recording the video and / or audio information. A recording method for recording index information of the video and / or audio information, which is obtained by reducing the information amount of the video and / or audio information, in an empty area adjacent to the recording area. 3. A recording device for recording video and / or audio information on a predetermined recording medium, wherein index information for forming index information of the video and / or audio information by reducing the amount of information of the video and / or audio information. Forming means, recording means for recording the video and / or audio information and the index information in the recording medium; and storing the video and / or audio information and the index information for a predetermined period of time, respectively. A recording apparatus comprising: a storage unit that outputs audio information and the index information to the recording unit in a predetermined order. 4. The storage means outputs the video and / or audio information at a higher transmission rate than the actual data, and the recording means transmits the video and / or audio information output from the storage means. 4. The recording apparatus according to claim 3, wherein the video and / or audio information is recorded at a recording density corresponding to a rate, and the index information is recorded in a free area of the recording medium obtained as a result. 5. A video and / or audio information and index information of the video information obtained by reducing the information amount of the video and / or audio information are recorded on a predetermined recording medium, and based on the index information, An editing method characterized by creating edit data of video and / or audio information. 6. The video and / or audio information and the index information are recorded on a first recording medium, and only the index information recorded on the first recording medium is copied on a second recording medium, 6. The editing method according to claim 5, wherein edit data of the video and / or audio information is created based on the index information copied to the second recording medium. 7. The first recording medium is a tape-shaped recording medium, and the second recording medium is a disk-shaped recording medium. The index information of the first recording medium is stored in the second recording medium. 7. When copying to, the video and / or audio information recorded on the first recording medium is skipped, only the index information is reproduced, and copied on the second recording medium. Editing method described in.