KR19990050073A - How to Edit Data on a Recordable Optical Disc System - Google Patents

Abstract

The present invention relates to a data editing method of a recordable optical disc system having a memory for recording and reproducing program data on a disc, wherein only selected program data among the reproduced program data while reproducing program data of the disc is reproduced. Storing in; Recording program data stored in the memory at a predetermined position on the disk; And recording data indicating a predetermined position on the disk on which the program data is recorded in the UTOC area on the disk.

Description

How to Edit Data on a Recordable Optical Disc System

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data editing method in which a recordable optical disc system can read back program data recorded on a disk, and then rewrite the data onto a disk after an editing process.

In general, a recordable optical disc system is a system capable of recording program data input from an external source on a track of a disc, and there may be several sources for providing program data for recording. After receiving data, there is a settop box that detects and outputs only program data of a selected channel.

1 shows a block diagram of an optical disk system for recording program data of a predetermined channel.

In FIG. 1, a recordable optical disc system is composed of a set top box 10, a recording unit 20, a disc 30, a reproducing unit 40, a host computer 50, and a key input terminal 60. As shown in FIG.

When the user provides the host computer 50 with the recording key signal and the channel key signal for selecting a predetermined channel through the key input terminal 60, the host computer 50 detects only the channel key selected in the set-top box 10. While providing a control signal to control, the recording unit 20 is controlled to operate.

The set-top box 10 receives program data of a plurality of channels input from the outside under the control of the host computer 50, and then detects only the program data of the selected channel and provides it to the recording unit 20.

The recording unit 20 compresses program data of a predetermined channel input from the set-top box 10 based on a Motion Picture Expert Group (MPEG) compression method, and then, on the track of the disc 30 through error correction encoding and recording modulation. Record it.

In the reproduction mode, the host computer 50 causes the operation of the recording unit 20 to be stopped while controlling the reproduction unit 40 to be operated. The reproduction unit 40 demodulates and error corrects and decodes the program data recorded on the disc 30 under the control of the host computer 50, and decompresses and outputs the data according to the MPEG decoding method.

Such a recordable optical disc system can be used to edit the program data recorded on the disc. Conventionally, an editing system for such an editing operation is provided separately.

That is, conventionally, the entire program data recorded on the disc is reproduced and provided to the editing system, and then the editing system partially selects only predetermined program data from the input program data and provides it to the optical disc system again. By sequentially writing the program data input from the disk back to the disk, program data editing was completed.

However, such a prior art has a very troublesome problem because there must be an editing system even for editing a very small amount of program data.

Accordingly, an object of the present invention is to provide a data editing method in which a high capacity memory is provided inside a recordable optical disc system so that a small amount of program data can be edited in the optical disc system itself.

In order to achieve the above object, the present invention provides a data editing method for recording and reproducing program data on a disc, wherein the program data is recorded while reproducing program data of the disc. Storing only selected program data in the memory; Recording program data stored in the memory at a predetermined position on the disk; And recording a predetermined position on the disk on which the program data is recorded in the UTOC area on the disk.

1 is a general configuration diagram of a recordable optical disc system;

2 is a hardware configuration diagram for performing a data editing method of the present invention;

3 is a detailed flowchart showing a preferred embodiment of the data editing method of the present invention.

<Description of the symbols for the main parts of the drawings>

100; Disk 110; Register

120; Playback section 130; Host computer

140; Switching unit 150; Memory

160; Key input section

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

In general, a disc may contain program data of one movie, but there may be a disc in which various programs are stored, such as a music video disc or a learning disc.

Here, in the case of a disc containing several music video programs, the logo screen of each music video program is displayed at the place where each music video program starts, and in the case of a study disc divided by the paragraph, the place where each paragraph starts There is a screen corresponding to the contents of the paragraph.

Since such logo screens or screens corresponding to the contents of paragraphs are listed at the beginning of each program, the editing process can be viewed at a time so that the entire logo screen or screens corresponding to the contents of the entire paragraph can be viewed at once. Must go through.

By the way, although the entire logo screen of each program is actually a very small amount of data, it was possible to edit only by using an editor in the past. Therefore, the present invention is characterized in that the memory is mounted inside the optical disc system so that a small amount of data can be edited as described above, and the data can be easily edited using the mounted memory.

2 is a block diagram of an optical disc system for performing the data editing method of the present invention.

In FIG. 2, the optical disc system for performing the data editing method of the present invention includes a disc 100, a recording unit 110, a playback unit 120, a host computer 130, a switching unit 140, a memory 150, a key. It is composed of an input unit 160.

The reproducing unit 120 reproduces the program data recorded on the disc 100, and the recording unit 110 functions to record the program data stored in the memory 150 on the disc 100.

The switching unit 140 connects the reproducing unit 120 and the memory 150 or controls the recording unit 110 and the memory 150 under the control of the host computer 130.

The host computer 130 controls the overall system for editing program data, and the program data to be edited is stored in the memory 150.

3 is a detailed flowchart illustrating a data editing method according to a preferred embodiment of the present invention, wherein the data editing method of FIG. 3 is performed using the hardware of FIG.

Therefore, hereinafter, a data editing method according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 2 and 3.

First, when the disk 100 is mounted in the optical disk system (S1), the host computer 130 controls the playback unit 120 to control the table of contents (TOC) data and the user table of content (UTOC) of the disk 100. Data is reproduced (S2).

The playback unit 120 reproduces the TOC data and the UTOC data contained in the disk 100 under the control of the host computer 130, and provides them to the host computer 130, and the host computer 130 stores them in an internal memory. (S3).

Thereafter, when the user provides the play key signal to the host computer 130 using the key input unit 160 (S4), the host computer 130 controls the play unit 120 to store the program data recorded on the disc 100. The playback unit 120 reproduces the program data recorded on the disc 100 under the control of the host computer 130 (S5).

As described above, when the user provides the edit reproduction key signal to the host computer 130 by using the key input unit 160 (S6) while the program data recorded on the disc 100 is reproduced (S6), the host computer 130 switches the switching unit. The control unit 140 controls the connection unit 120 to the memory 150.

Therefore, the program data reproduced by the reproducing unit 120 is stored in the memory 150 via the switching unit 140 (S7), and the user once again edits the reproducing key signal using the key input unit 160. When provided to the host computer 130 (S8), the host computer 130 controls the switching unit 140 to release the connection between the playback unit 120 and the memory 150 (S9).

As described above, while the optical disk system is operating in the reproducing mode, the above-described steps S6 to S9 are repeatedly performed to sequentially store predetermined program data in the memory, and when the reproduction is completed (S10), the user uses the key input unit 160. The edit record key signal is provided to the host computer 130 (S11).

The host computer 130 controls the recording unit 110 to search for a data recording position on the disc 100, for example, an area where no program data is recorded on the disc 100 (S12), and the disc 100 When the search for the data recording position on the () is completed (S13), the host computer 130 controls the switching unit 140 to allow the recording unit 110 and the memory 150 to be connected, and then operates the recording unit 110. .

Therefore, the recording unit 110 sequentially records the program data provided from the memory 150 at a predetermined recording position on the disc 100 (S14), and when recording of the program data is completed (S15), the data on the disc 100 is completed. The recording position, that is, the data recording start position and the data recording end position, is provided to the host computer 130.

When the data recording position signal is input from the recording unit 110, the host computer 130 releases the connection between the recording unit 110 and the memory 150 and then stores the internal memory based on the data recording position input from the recording unit 110. After modifying the UTOC data stored in (S16), the recording unit 110 is controlled so that the modified UTOC data is recorded in the UTOC area on the disk 100 (S17).

The recording unit 110 records the modified UTOC data in the UTOC area on the disc 100 under the control of the host computer 130.

As described above, the present invention provides a very large memory inside the optical disc system, so that a small amount of program data can be edited in the optical disc system itself, which is very convenient.

Claims (1)

A data editing method for recording and playing back program data on a disc, the memory having a recordable optical disc system comprising: Reproducing program data of the disc, and storing only selected program data of the reproduced program data in the memory; Recording program data stored in the memory at a predetermined position on the disk; And recording a predetermined position on the disk on which the program data is recorded in a UTOC area on the disk.