JP3268630B2 - How to edit recorded data on a disc - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for editing recorded data on a disk.

[0002]

2. Description of the Related Art In a disk data structure of a conventional video disk, as shown in FIG. 4, a video data channel (a channel is also called a stream, but will be described here as a channel) DC11 and an audio data channel DC12 are used. Since only one video and audio data are recorded and reproduced in this video and audio data channel DC11 and DC12 in order, it is necessary to create a signal in which all video and audio have been edited before recording. Must. In FIG. 4, track numbers (hereinafter referred to as TNOs) are arranged in order of TNO1, TNO2,.
Are recorded in the order of the serial numbers.

[0003] However, this editing requires synchronization of all data such as video, audio, title, BGM, etc., and therefore, there is a problem that the work is troublesome and takes a lot of time, and the device becomes complicated. .

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for editing recorded data on a disk which solves the above-mentioned conventional problems and can be easily edited.

[0005]

According to the present invention, there is provided a method for editing recorded data on a disk, comprising the steps of: recording and reproducing a main video data channel and a main audio data channel independently of the main video data channel and the main audio data channel;
Recording data editing method using a disc having at least one sub-video data channel and / or at least one sub-audio data channel that can be erased
The video and audio data before editing are stored in the main video data.
Data channel and the data of the main audio data channel.
When the main video and main audio data recorded in the main video and main audio data channels are edited, the reproduction control information corresponding to the edit data is written in a reproduction control information recording area, and There is a prescribed said
Image and audio data related to the editing data recorded in the data block is aligned with the position of the predetermined data block in the sub-video and sub-audio data channels , respectively .
Is written at the position of the data block .

[0006]

[Function] Writes the original video and audio data to the main video and main audio data channels of the disk, respectively, and controls the reproduction control information according to the edit data specifying the reproduction range, the reproduction order, etc. while reproducing the written disk. Write to the information recording area. Next, while reproducing the disc in accordance with the reproduction control information, the video (title, etc.) and the audio (BGM, etc.) to be inserted are added to the main video and audio data.
Is written into a writable and erasable sub-picture (picture) data channel and a sub-audio data channel independent of the main video and main audio data channels, respectively.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for editing recorded data on a disk according to the present invention will be described below. First, a rewritable digital versatile disk (hereinafter referred to as DVD)
For example, a DVD-RAM is prepared. DVD
As shown in FIG. 2, the data structure of the RAM includes a lead-in area, a main video data channel DC1, a main audio data channel DC2, at least one sub audio data channel DC3, and at least one sub video (picture) data channel. DC4. Here, the sub audio data channel DC3 and the picture data channel DC4 correspond to the main video and main audio data channels DC1.
And writing and erasing independently of DC2. Thus, using the main video data channel and main audio data channel of the DVD-RAM, the original video and audio data are written for each data block of each channel regardless of the reproduction range or order. Next, editing is performed while reproducing the DVD on which the video and audio data are written. That is, the reproduction range is deleted, the order of the reproduction range is specified, etc., for each of the video and audio, and the reproduction control information according to the edited contents is written in the reproduction control information recording area.
Edit the original video and audio data.

Next, when the DVD is reproduced, the original video and audio data are reproduced according to the edit data of the reproduction control information, so that different image data (for example, a title or the like) is added to the original video data. When superimposing is desired, an external video input is written to a data block position of a picture (sub-video) data channel different from the main video data channel, which matches the data block position of the original video data to be inserted. Similarly, when it is desired to insert another audio data (for example, BGM, etc.) into the original audio data, the sub audio data different from the main audio data channel that matches the data block position of the original audio data Write as an external audio input to the channel data block position. Here, since the picture (sub-picture) and sub-sound data channels are independent from the main picture and the main sound data channel, writing and erasing to the data block can be performed independently. However, it can be changed and synchronization is easy.

[0009]

FIG. 1 shows a disc recording / reproducing apparatus for executing a disc recording data editing method according to the present invention.
This will be described with reference to FIGS. FIG. 1 is a schematic block diagram of one embodiment of a disc recording / reproducing apparatus for executing a disc recording data editing method according to the present invention. In FIG. 1, 1 is a DVD, 2 is a motor for rotating so as to read data from DVD1, 3 is a pickup, 4 is a servo circuit, 5 is an external video by processing data from DVD1,
A signal processing circuit for interfacing with external input / output signals and editing so as to output audio and process external video and audio input and write the data to the DVD 1. A microcomputer 6 controls the operation of the entire system.

As shown in FIG. 2, the data structure of the DVD 1 includes a lead-in area, a reproduction control information recording area, a main video data channel DC1, and a main audio data channel DC1.
2, at least one sub audio data channel DC3
And at least one sub-picture (picture) data channel DC4 and a lead-out area. Here, the sub audio data channel DC3 and the picture data channel DC4 can be written and erased independently of the main video and main audio data channels DC1 and DC2.

In the above configuration, data recording and editing work on a DVD will be described with reference to the flowchart of FIG. First, the original video and audio data to be edited are
Arbitrarily without consideration of the reproduction range and the reproduction order, the external video and audio input of the recording / reproducing apparatus are lead-in from the lead-in to the main video and main audio data channels DC1 and DC2 of the DVD1 via the signal processing circuit 5 respectively. (Step S1). Here, the data blocks are named TN1, TN2, TN3,... (This is a data block having a different property from the TNO of the conventional video disc.) Next, when editing the erasure, the reproduction range, the reproduction order, and the like, the DVD 1 on which the original video and audio data are written is reproduced. While, if you want to erase, specify the erasure range, input the "cut" command signal by key input (not shown), etc.
A designated erase range (for example, data block TN2 in FIG. 2)
In the case where the data recorded in the area between TN4 and TN4 is to be erased and reproduced, a reproduction range is designated, and the order of TNO to be reproduced is input by key input or the like (step S2). The original data is edited first by writing the reproduction control information corresponding to the edited contents into the lead-in area in response to a reproduction control information writing command by key input or the like (step S3).

Next, when the DVD 1 is reproduced, the reproduction is performed in accordance with the edit data of the reproduction control information (FIG. 2 shows a case where the data is edited to be reproduced in the order of TN1, TN2, TN3, TN4, for example). Therefore, if there is audio data to be mixed with the edited data (step S4), the audio data from the external audio input is written to the sub audio data channel DC3 via the signal processing circuit 5 at the place where mixing is desired. (Step S5). Furthermore, if there is image data such as a title to be superimposed on the edited data (step S6),
The image data from the external video input is written to the signal processing circuit 5 to the picture data channel DC4 (step S
7). Next, it is determined whether or not to end the editing (step S8), and if not, the process returns to step S1. The sub-audio data channel DC3 and the picture data channel DC4 can be written and erased independently of the other data channels, so they can be changed many times when the timing is desired.

As described above, when the edited DVD 1 is reproduced, the original video and audio data are reproduced in accordance with the reproduction control information, and at the same time, the data recorded in the sub audio data channel DC3 and the picture data channel DC4 are reproduced. Since the data is reproduced, all the edited data can be reproduced synchronously. By adding more audio data channels and / or picture data channels, it is possible to mix any number of audio and picture data. In addition, by adding character input and character editing functions to a disk recording / reproducing apparatus, picture data can be input without using an external device if mixing only characters.

According to the present invention, after all the video and audio data to be edited are written, the reproduction range,
By specifying the order and writing the corresponding reproduction control information, the original data can be freely edited as many times as desired. In addition to the edited video and audio data, additional audio data such as BGM and picture data such as a title can be additionally edited independently. In other words, there is no need to specify the playback range and order of the editing source video and audio data and perform synchronization of all of the added BGM, title and other audio and picture data at the same time, which has been performed before recording. Such time can be reduced, and a device for synchronization is not required. Also, after all editing is completed, additional re-editing is possible by writing new editing source video and audio data.

[0016]

According to the present invention, the editing operation of the data recorded on the disk is facilitated.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram of an embodiment of a disc recording / reproducing apparatus for executing a disc recording data editing method according to the present invention.

FIG. 2 shows an example of a data structure of a disc recorded and reproduced by the apparatus shown in FIG.

FIG. 3 is a flowchart illustrating the operation of FIG. 1;

FIG. 4 shows an example of a data structure of a conventional video disc.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Digital versatile disk 2 Motor 3 Pickup 4 Servo circuit 5 Signal processing circuit 6 Microcomputer

Claims (1)

(57) [Claims] 1. Recordable / reproducible / erasable independently of a main video data channel and a main audio data channel, and the main video data channel and a main audio data channel.
A recording data editing method performed using a disc having at least one sub-video data channel and / or at least one sub-audio data channel, comprising:
The video and audio data before collection is transferred to the main video data channel.
Channel and data block of the main audio data channel
Recorded for each, when editing a main picture and the main audio data recorded in the main image and the main audio data channel, writes the playback control information corresponding to the edit data to the reproduction control information recording area, a said editing data The specified data block
Image and audio data related to the edited data recorded in the sub-video and sub-audio data channels, respectively.
A data block matching the position of the predetermined data block
A recording data editing method for a disc, characterized by writing data at a lock position .