KR20050060150A - Method for recording digital data on rewritable medium - Google Patents

Abstract

The present invention relates to a method for recording data on a rewritable recording medium, and in particular, to provide a digital data recording method on a rewritable recording medium that can use space of the recording medium usefully. To this end, when the at least one title stored on the recording medium is deleted, the present invention comprises the steps of: recording in a predetermined area of the recording medium with the starting address and the EOF of the deleted titles as the reference starting address and the EOF, and data on the recording medium. After retrieving the reference starting address and the EOF from the predetermined area of the recording medium in accordance with the recording request, data is recorded at a position corresponding to the retrieved reference starting address and the EOF, and at the position of the recording medium corresponding to the retrieved reference EOF. If there is data to be recorded until it is reached, recording the data in an empty space of the recording medium, and after completing the data recording, the reference starting address, the reference EOF, and the end of the data recording are recorded. And recording on the recording medium as the starting address, the intermediate address, and the EOF.

Description

How to record digital data on a rewritable recording medium {METHOD FOR RECORDING DIGITAL DATA ON REWRITABLE MEDIUM}

The present invention relates to a method of recording data on a rewritable recording medium, and more particularly, to a method of recording data on a recording medium after deleting the data recorded on the recording medium.

Recording media, such as CDs (CDs) that can record and store data with high quality digital audio, are the most widely used digital audio recording media. CDs are capable of permanently recording high-quality digital audio data, and recently, digital versatile discs (DVDs), which are optical discs capable of recording and storing high-definition video data or high-quality audio data, have been widely used. DVD types include a playback-only DVD-ROM, a write once DVD-R, and a rewritable DVD-RAM or DVD-RW.

Rewritable DVD, a large rewritable recording medium, is currently in the process of standardizing the recording format.

Such a rewritable recording medium, i.e., DVD-RW, has the advantage of being able to edit data.

In general, as shown in FIG. 1, a DVD-RW is divided into a first area 10 in which titles of 1, 2, 3, and 4 are recorded, and a second area 20, which is empty space. Information about the title, that is, the start information and the EOF of the title are recorded in a predetermined area of the DVD-RW. If any of the titles stored in the DVD-RW is deleted, the start information and the EOF corresponding to the deleted title at the same time are deleted. Is deleted.

That is, when the user arbitrarily deletes the titles 1 and 3, the start addresses and the EOF of the titles 1 and 3 recorded in the predetermined area of the DVD-RW are deleted. For this reason, an optical disc device that records data on a DVD-RW does not recognize spaces 1 and 3 as free spaces unless the DVD-RW is formatted, and only recognizes the second area 20 as free spaces. Therefore, since data is recorded only in the second area 20 when data is recorded, there is a problem of causing a waste of space.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, by recording a start address and an EOF of a deleted title in a predetermined area of a recording medium, and then recording data using information stored in the predetermined area during data recording. In addition, the present invention provides a method of recording digital data in a rewritable recording medium in which space of the recording medium can be usefully used.

In order to achieve the above object, the present invention provides a method of recording data on a rewritable recording medium on which at least two titles are recorded, wherein the deleted titles are deleted when at least one title stored on the recording medium is deleted. Recording the start address and the EOF as a reference start address and an EOF in a predetermined area of the recording medium, and retrieving the reference starting address and the EOF in the predetermined area of the recording medium according to a data recording request to the recording medium. Data is recorded at a position corresponding to the searched start address for reference and EOF, and data to be recorded remains until the position of the recording medium corresponding to the searched reference EOF is reached. Recording the data; and after completing the recording of the data, the reference start address, the reference EOF, and image. To the location where data recording starts with the end address, the middle address, EOF for the record data and a step of recording on the recording medium.

Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings. Fig. 2 is a block diagram showing an optical disc apparatus for recording and reproducing digital data on a rewritable recording medium to be applied to the present invention.

Referring to FIG. 2, the optical disk apparatus includes an optical pickup unit 102 that reads a signal recorded on the rewritable recording medium 100 or records data processed by the recording signal on the rewritable recording medium 100, and an optical pickup. A reproduction signal processing unit 112 for reproducing a signal read out from the unit 102, a decoder 114 for decoding and outputting a reproduction signal, and recording data, which is an analog signal input from the outside, is converted into a digital signal A sampler 107 for outputting, an encoder 106 for encoding a converted digital signal in an MPEG, LPCM, or AC-3 system, and the encoded digital data. The recording signal processing unit 104 converts and converts the signal into a form suitable for recording, and the system control unit 108 for controlling the operation of such means in response to a user request, and the operation of the system control unit 108. A memory 110, a buffer memory 109 to re-perform acts as a buffer when arranging the data stored in the recording medium 100 for storing data.

The reproduction signal processing unit 114 receives the start address and EOF for the deleted title from the optical pickup unit 102 and transmits it to the system controller 108 when any one or more titles stored in the recording medium 100 are deleted. to provide.

The system control unit 108 stores the start address and the EOF for the deleted title as the reference start address and the EOF in the predetermined area of the recording medium 100 through the recording signal processing unit 104 and the optical pickup unit 102. Then, when the user requests data recording, data is recorded in the reference start information recorded in the predetermined area of the recording medium 100 and in the area of the recording medium 100 corresponding to the EOF. In this case, when the recording data is not entirely recorded in the area of the recording medium 100 corresponding to the start information for reference and EOF, the system controller 108 searches for the empty space in the recording medium 100 and then stores the data in the retrieved empty space. After the recording is completed, the start address, the intermediate address, and the EOF for the recording data are recorded in a predetermined area of the recording medium 100. Here, the intermediate address is the reference EOF, the start address is the reference start address, and the EOF is the position of the recording medium 100 where data recording is completed.

In addition, the system control unit 108 may store only the start address and the EOF for the recording data in the recording medium 100 when the recording data is sufficiently recorded in the area of the recording medium 100 corresponding to the start information for reference and the EOF. Record it. That is, the start address for the recording data becomes the reference start address, and the EOF for the recording data is the position of the recording medium 100 where data recording is completed.

A data recording method using the disk device having the above configuration will be described with reference to FIG. 3 is a flowchart illustrating a process of recording digital data on a rewritable recording medium according to a preferred embodiment of the present invention, and FIG. 4 is a diagram illustrating a structure of a recording medium for explaining the present invention.

First, as shown in FIG. 4, the recording medium 100 includes a first area 400 in which A, B, C, and D titles are stored, a second area 410 which is a blank space, and a reference for use in the present invention. The third area 420 stores the start information and the EOF. In this case, the data is recorded after the title A of the title stored in the first area 400 is deleted.

As shown in FIG. 3, when a title A among the titles stored in the first area 400 is deleted, the system controller 108 records the start information and the EOF of the deleted A title as reference start information and EOF. The third area 420 of the medium 100 is recorded (S300, S302).

Subsequently, in response to a user's request for data recording, the system controller 108 reads the reference start information and the EOF recorded in the third area 420 and records the data using the reference start information as the start address of the recording data. Start (S304, S306, S308). That is, the system controller 108 starts data recording from the position of the recording medium 100 corresponding to the reference start address.

The system controller 108 determines whether the position of the recording medium 100 has reached the reference EOF while recording the data (S310).

As a result of the determination in step S310, when the position of the recording medium 100 reaches the reference EOF, the system control unit 108 moves the optical pickup unit 102 to the start position of the second area 410 of the recording medium 100. That is, the data is recorded by moving to the start position of the empty space. When the data recording is completed, the start address, the intermediate address, and the EOF for the recorded data are recorded in the third area 420 (S312 and S314).

At this time, the start address for the recording data becomes the reference start address, the intermediate address becomes the reference EOF, and the EOF becomes the position of the recording medium 100 where the data has been recorded.

As a result of the determination in step S310, when data recording is completed before the position of the recording medium 100 reaches the reference EOF, the system controller 108 records the start address and the EOF for the recording data in the third area 420. (S316).

At this time, the start address for the recording data becomes the reference start address, and the EOF is the position of the recording medium 100 where the data has been recorded.

When the recording medium 100 on which data is recorded by the method as described above is inserted into another optical disk device, the reproduction method will be described with reference to FIGS. 5A to 5B.

As shown in FIG. 5A, when a title is divided into a1 and a2 and recorded in the recording medium 100, the system controller 108 moves the b and c titles forward using the buffer memory 109. The data of a1 is moved to the front of the a2 data to rearrange the titles so that they can be reproduced in other optical disc reproducing apparatus as shown in FIG. 5B.

As described above, the present invention records the start address and the EOF of a deleted title in a predetermined area of the recording medium, and records data using information stored in the predetermined area during data recording, thereby making the space of the recording medium useful. Can be.

1 is a view for explaining the problems of the prior art,

2 is a block diagram showing an optical disk apparatus for recording and reproducing digital data on a rewritable recording medium to be applied to the present invention;

3 is a flowchart illustrating a digital data recording method on a rewritable recording medium according to a preferred embodiment of the present invention.

4 is a diagram showing the structure of a recording medium for explaining the present invention;

5 is a view for explaining a process of rearranging data recorded on the recording medium in the present invention.

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

100: recording medium 102: optical pickup unit

104: recording signal processing unit 106: encoder

107: sampler 108: system control unit

109: buffer memory 110: memory

112: playback signal processor 114: decoder

Claims (2)

A method of recording data on a rewritable recording medium having at least two titles recorded thereon, the method comprising: Recording at least one title stored on the recording medium in a predetermined area of the recording medium using the starting addresses and EOFs of the deleted titles as reference reference addresses and EOFs; After retrieving a reference start address and an EOF from a predetermined area of the recording medium according to a data recording request to the recording medium, data is recorded at a position corresponding to the retrieved reference start address and the EOF, and the data is stored in the retrieved reference EOF. Recording data in an empty space of the recording medium when data to be recorded remains until a corresponding recording medium is reached; After the recording of the data is completed, recording the reference start address, the reference EOF, and the end position of the data as the start address, the intermediate address, and the EOF to the recording medium. Digital data recording method on a rewritable recording medium comprising a. The method of claim 1, When all data is recorded before reaching the position of the recording medium corresponding to the reference EOF, the reference starting address and the end of data recording are set to the recording medium with the starting address and the EOF of the recording data. A digital data recording method on a rewritable recording medium, characterized in that for recording.