KR19980078993A - How to record DVD system - Google Patents

Abstract

The present invention provides a method for recording new data onto an optical disc in which data is partially stored, and disc information for a data section in which the data is recorded and a non-signal section in which the data is not recorded in the UTOC area. A recording method of a DVDR system, comprising: a first step of detecting disc information of a data section and a no-signal section recorded in the UTOC region; A second step of displaying the data section and the no signal section detected in the first step; A third step of recording new data from the recording start position when a recording start position of a new disk is selected among the sections output to the OSD screen in the second step; The recording is completed in the third step, and the fourth step of recording the recording start position and the recording end position of the section in which the new data is recorded in the UTOC area is provided. There is an effect that can prevent the loss of important information recorded in the and to improve the recording efficiency of the DVDR.

Description

How to record DVD system

In the present invention, a digital video disc recorder (DVDR) system capable of recording, erasing, and playback, particularly when recording new data on a disc in which data is partially recorded, displays a signal-free period in which no data is recorded. The present invention relates to a recording method of a DVDR system in which a section for recording new data can be selected and recorded with reference thereto.

In general, optical discs are CD-only CDs, CD-ROMs, video discs, etc., which can be read only by the user. Information can be recorded once, and the recorded information can be read several times, but cannot be erased or rewritten. It can be divided into a recording type and an erasing rewriting type that can repeatedly record, erase, and reproduce information.

The DVDR system is one of the above-described erasing and rewritable systems, and the DVDR disc is large enough to contain information of one movie, MPEG (Motion Picture Expert Group) -2 video compression, and AC-3 stereo surround sound. Function is the key.

In such a DVDR system, the operation of recording information data, in particular, on a disc will be described as follows.

Fig. 1 shows a detailed block diagram of the recording apparatus of the DVDR system.

In FIG. 1, the MPEG encoder 110 compresses an input video / audio signal based on a Motion Picture Expert Group (MPEG) compression scheme, converts the video / audio signal into a data stream, and provides the converted data stream to the data format unit 120. . The data formatter 120 subdivides the data stream input from the MPEG encoder 110 into sectors, adds a sector header to each sector, and performs reed-solomon error correction encoding. After the EFM plus modulation is provided to the optical pickup unit (130).

The optical pickup unit 130 records the data provided from the data format unit 120 on the disc D under the control of the system controller 140.

At this time, in the DVDR disc D, address signals for determining a predetermined position on the disc are recorded as FM (Frequency Modulation) signals by wobbling. Therefore, the address detecting unit 160 detects an address signal from the signal output from the optical pickup unit 130 during the recording operation of the DVDR system, and provides the address signal to the system control unit 140 and the servo unit 150, respectively.

The system controller 140 determines the current recording position on the disc D with reference to the address signal provided from the address detector 160. In addition, by detecting the input time difference between the address signal that was input immediately before and the address signal that is currently input, whether the disk D is rotating at a constant liner velocity (CLV), or the optical pickup unit 130 is connected to the disk D. Monitors the correct trace of a track.

The servo unit 150 controls the disk D to rotate in a constant liner velocity (CLV) under the control of the system controller 140, while the optical pickup unit 130 controls the track (land) of the disk D. Perform tracking servo to accurately trace) / groove). The spindle motor M rotates the disk D to CLV under the control of the servo unit 150.

Using a recording device of a DVDR system operating in this manner, conventionally, a consumer directly connects a DVDR system with an external device (for example, a VCR or TV), and then records information data provided from the external device in a predetermined section of the disc. Could.

On the other hand, in the recording method of the conventional DVDR system in which predetermined data is recorded on the optical disc by using the above-described recording apparatus, there is no distinction between a data section in which data is already recorded and a no-signal section in which data is not recorded. The data was recorded at the recording position selected by the user.

However, in such a conventional method, new data may be overwritten in a data section in which important information is stored, and there is a problem in that data which may contain important information may be lost.

In addition, even in the non-signal section in which no data is recorded, the unrecorded section of the disk that is suitable for the amount of data to be recorded cannot be selected, and thus there is a problem that the efficiency is lowered when the predetermined data is recorded on the disk.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a data section and data in which data is stored in a UTOC information area that can contain a user's table of content (UTOC) that can be arbitrarily set by a user. The table of contents for the time data of no signal section is not recorded, and then, when recording new data, the data section and the no signal section are displayed on the monitor so that the user can refer to it and record the new data. The present invention provides a recording method of a DVDR system capable of selecting a section to be recorded.

In order to achieve the above object, in the present invention, an optical disc in which data is partially recorded, and disc information for a data section in which the data is recorded and no signal section in which the data is not recorded is recorded in the UTOC area. 10. A recording method of a DVDR system for recording new data on a computer, comprising: a first step of detecting disc information of a data section and a no-signal section recorded in the UTOC region; A second step of displaying the data section and the no signal section detected in the first step; A third step of recording new data from the recording start position when a recording start position of a new disk is selected among the sections output to the OSD screen in the second step; In the third step, recording is completed, and a fourth step of recording a recording start position and a recording end position of the section in which the new data is recorded in the UTOC area is provided.

1 shows a recording apparatus of a DVDR system;

2 is an overall configuration diagram of a DVDR system for carrying out the recording method of the present invention;

3 is a detailed flowchart showing a recording method of a DVDR system according to a preferred embodiment of the present invention.

<Description of the code | symbol about the principal part of drawing>

D: Disc 110: MPEG Decoder

120: data format unit 130: optical pickup unit

140: system control unit 150: servo unit

160: address detection unit 210: RF amplification unit

220: deformatting unit 230: MPEG decoder

240: OSD processing unit 250: Key input unit

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

In the lead-in area of the DVDR disc, as described in the above-described prior art, the position information for the track number, track start point, and track end point for each track of the disc is recorded as a TOC. It is done.

Similarly, in the present invention, in addition to the TOC information stored in the disc lead-in area of the disc, an area (hereinafter referred to as the UTOC information area) in which the user can arbitrarily set UTOC information can be separately allocated to the consumer. After randomly recording data in a predetermined section of the disc, the number of each track and the position information corresponding to the start and end points of the track are reset so that they can be stored in the UTOC information area.

2 shows a DVDR system for carrying out the recording method of the present invention.

FIG. 2 can be said to further include a reproducing apparatus for reproducing data from a disc in the recording apparatus of the DVDR system shown in FIG. 1 described above. Therefore, in FIG. 2, the same constituent members performing substantially the same functions as those of FIG. 1 are shown with the same reference numerals for easy understanding.

In FIG. 2, the reproducing apparatus of the DVDR system includes an RF amplifying unit 210 and a signal output from the RF amplifying unit 210 for amplifying, signal-processing and outputting a radio frequency (RF) signal read by the optical pickup unit 130. Decode the EFM plus, remove the sector header, correct the Reed-Solomon error, and output the data deformatting unit (deformat00) 220, and decompresses and outputs the data output from the data deformatting unit 220. 230, an OSD (On Screen Display) processor 240 for OSD output of predetermined character information. In addition, the DVDR system of FIG. 2 is provided with a key input unit 250 for performing the recording method of the present invention.

3 is a detailed flowchart showing a recording method according to a preferred embodiment of the present invention. The recording A method of FIG. 3 can substantially use the DVDR system shown in FIG. Therefore, hereinafter, the recording method of FIG. 3 will be described with reference to FIG. 2.

First, when the disk D is mounted in the DVDR system by the user, the system control unit 140 controls to chuck the disk D (S 1), and when the disk is chucked, it is allocated to the lead-in area of the disk. The optical pickup unit 130 is controlled to read the TOC information and the UTOC information.

The optical pickup unit 130 reads the UTOC information from the UTOC information area included in the lead-in area of the disk D under the control of the system controller 140 and provides the UTOC information to the RF amplifier 210.

The RF amplifier 210 amplifies and signal-processes the UTOC information provided from the optical pickup unit 130 and provides it to the data deformatter 220.

The data deformatter 220 detects the user TOC information provided from the RF amplifier 210 and provides it to the system controller 140, and the system controller 140 stores the input UTOC information in the internal memory (S). 2). At this time, the UTOC information will be the time data or address of the recording start position and the recording end position of each data section in which data is recorded on the disk.

Subsequently, when a recording key signal is applied from the key input unit 250 by a user's key operation (S 3), the system controller 140 controls the OSD processing unit 240 to set a section for recording new data. The screen is output on the monitor (S4). At this time, the time data or address of the data section in which data is recorded and the non-signal section in which no data is recorded will be output.

Therefore, when the user checks the message output from S 4 on the screen and sets a section to record new data by operating the numeric key or the direction key provided in the key input unit 250 (S 5), the key input unit 250 ) Generates a key signal corresponding to a user's key input and provides it to the system controller 140.

The system controller 140 stores the time data or the address of the recording start point corresponding to the key signal provided by the key input unit 250 in the memory inside the system controller 140 (S6).

Thereafter, the system controller 140 controls the servo unit 150 to control the optical pickup unit 130 to jump to the recording start position on the disk D. FIG.

The servo unit 150 searches for the recording start position while moving the optical pickup unit 130 in the direction of the recording start position under the control of the system controller 140 (S7), and the optical pickup unit 130 starts recording. When the position is reached, the search is terminated (S 8). When the optical pickup unit 130 reaches the recording start position, the system control unit 140 controls the system so that recording is performed.

Therefore, the video / audio signal input from the outside will be recorded from the recording start position of the disc D by the optical pickup unit 130 via the MPEG encoder 110 and the data format unit 120 (S 9). . If the recording end key signal is generated from the key input unit 250 by the user's key input while recording the video / audio signal input from the outside in the predetermined section of the disk D by such an operation (S10), The system control unit 140 controls the optical pickup unit 130 to finish recording (S11), and then stores the end point at which recording of new data is finished in the memory inside the system control unit 140 (S12). .

As described above, after the system controller 140 records new data in a predetermined section of the disk D, at S 6 and S 12, the recording start position of the new data stored in the internal memory of the system controller 140, and Rewrite end position of recording with UTOC information.

The system controller 140 then controls the rewritten UTOC information to be included in the UTOC information area in the lead-in area of the disc D.

The rewritten UTOC information is recorded in the UTOC information area included in the lead-in area of the disc D by the optical pickup unit 130 via the data format unit 120 under the control of the system control unit 140 (S 13 ).

Thereafter, when new data is to be recorded in a predetermined section of the disk D in which data is recorded by the above-described process, recording is performed by referring to UTOC information located in the lead-in area of the disk D. FIG.

As described above, the present invention stores the information of the data recording section in which data is recorded on the optical disk and the data unrecorded section in which no data is recorded in the UTOC information area, and then, when recording new data, an unrecorded portion suitable for the size of the data. By selecting and recording, the loss of existing data can be prevented and the recording efficiency of the DVDR can be improved.

Claims (3)

Recording of a DVDR system for recording new data on an optical disc in which data is partially recorded and disc information for a data section in which the data is recorded and a signal-free section in which the data is not recorded in the UTOC area In the method, A first step of detecting disc information about a data section and a no-signal section recorded in the UTOC region; A second step of displaying the data section and the no signal section detected in the first step; A third step of recording new data from the recording start position when a recording start position of a new disk is selected among the sections output to the OSD screen in the second step; Recording in the third step, and a fourth step of recording a recording start position and a recording end position of the section in which the new data is recorded in the UTOC area. The recording method of the DVDR system according to claim 1, wherein the disc information is time data of a recording start position and a recording end position of the data section and the no signal section. The recording method of the DVDR system according to claim 1, wherein the disc information is a data address of a recording start position and a recording end position of the data section and the no signal section.