KR20110082219A

KR20110082219A - Apparatus and method for controlling session of optical disc

Info

Publication number: KR20110082219A
Application number: KR1020100002099A
Authority: KR
Inventors: 김정우
Original assignee: 주식회사 히타치엘지 데이터 스토리지 코리아
Priority date: 2010-01-11
Filing date: 2010-01-11
Publication date: 2011-07-19

Abstract

PURPOSE: A method and device for controlling an optical disk session are provided to shorten a recording time by preventing the same program from being repeated again from the start. CONSTITUTION: A recording unit(14) records a program to an optical disk. A storing unit(18) stores recording information about the program. If re-recording is requested after abnormal stop of the recording operation, a control unit(16) compares a rewrite program and the stopped program by referring recording information. The control unit selects the only data which is not recorded previously among the re-recording program from the stopped recording location to record the data continuously and closes the data into one session.

Description

Apparatus and method for controlling session of optical disc}

The present invention relates to an optical disc session applied to various types of optical disc drives (ODDs) for recording or reproducing data, for example, on optical discs such as CDs, DVDs, and BDs. A control apparatus and method are provided.

In general, various types of optical disc drives (ODDs) for recording or reproducing data on optical discs such as CDs, DVDs, and BDs are widely used.

On the other hand, in the optical disc drive, various types of titles or programs such as movies are recorded on an optical disc such as a CD-R or a CD-RW in units of sessions.

For example, as shown in FIG. 1, the optical disc such as the CD-R or CD-RW includes a PCA (PCA) area, a PMA (Program Memory Area) area, and a program. (Program) areas and the like are separately allocated.

In addition, at least one session may be logically allocated to the program area. For example, if a session close operation is performed after the first program is normally recorded, the session close operation may be performed. At the front / rear end of the area where the first program is recorded, a lead-in area (LI) and a lead-out area (LO) are allocated.

Then, file system information (File System Info.) For the first program is recorded in the head section of the region in which the first program is recorded, and recording of the first program is started in the PMA region. First program information (Program 1_Info.) Indicating a position (Start Position) or the like is recorded.

In addition, in the state where the first program is recorded in the first session as described above, when a session close operation is performed after a new second program (Program 2) is normally recorded, the area in which the second program is recorded At the front and rear ends of, the lead-in area LI and the lead-out area LO are allocated.

In the head section of the region in which the second program is recorded, file system information about the second program is recorded, and in the PMA region, a second indicating a recording start position of the second program, and the like. Program information (Program 2_Info.) Is additionally recorded.

On the other hand, as shown in FIG. 2, if the recording operation is abnormally stopped due to an external shock or the like during recording of the first program, the session closing is not performed. Therefore, before and after the first program, An open session state is prevented from allocating the lead-in area and the lead-out area.

In the case of re-recording the first program in the open session state as described above, for example, as shown in FIG. 2, when the first program is rewritten from start to end, the same first program is used. Since this results in almost repeated recording, there is a problem that the recording time of the first program becomes inefficiently long.

For example, as shown in FIG. 3, if the first program is rewritten from another recording position to the beginning to the end, and a session is allocated, the same first program is recorded again from the beginning. In addition, there is a problem in that the program area of the optical disc is wasted inefficiently.

The present invention saves and manages recording information on a program that is currently being recorded, and prepares a program to be rewritten later if the recording operation is abnormally stopped due to, for example, an external shock. In the case of a program suspended by the present invention, the present invention provides an apparatus and method for controlling an optical disk session for selecting and recording only unrecorded data and then recording the data continuously.

An optical disc session control method according to the present invention comprises the steps of: storing and managing recording information on a corresponding program while performing a program recording operation; Determining whether a program to be rewritten is the same as the stopped program, by referring to the recording information after the recording operation is abnormally stopped; And if it is the same as the result of the determination, three steps of selectively recording only data not previously recorded among the programs to be rewritten from the stopped recording position, and then closing the data in one session.

The recording information may be stored and managed in a nonvolatile memory as open session information including any one or more of a program name, sample data, recording start and end position information.

In the second step, if the program name and the sample data included in the record information coincide with the program name and the sample data of the program to be rewritten, it is determined that the same program is used.

In the third step, if the determination result is the same, a user selection menu for selecting whether to continuously record is displayed, and when the continuous recording is selected, the program is to be rewritten from the stopped recording position. After selecting and recording only the unrecorded data continuously, it is characterized in that the closing in one session,

In addition, the optical disc session control apparatus according to the present invention comprises: a recording unit for recording a program on the optical disc; A storage unit for storing record information about the program; And if the rewriting is requested after the recording operation is abnormally stopped, referring to the recording information, it is determined whether the program to be rewritten is the same as the stopped program, and from the stopped recording position, the rewriting is performed. It is characterized in that it is configured to include a control unit for closing the continuous recording after selecting and recording only data that has not been previously recorded in the program,

The recording information may include open session information including one or more of a program name, sample data, recording start and end position information of the recorded program, and the storage unit may be a nonvolatile memory.

The control unit may determine that the program name and the sample data included in the record information are the same program if the program name and the sample data of the program to be rewritten are identical.

In addition, the determination result, if the same, further comprises a generation unit for generating a user selection menu for selecting whether or not continuous recording, the control unit, if the continuous recording is selected through the user selection menu, the stop From the recorded recording position, only the data not previously recorded among the programs to be rewritten are selected and continuously recorded, and then closed in one session.

The apparatus and method for controlling an optical disc session according to the present invention includes, for example, recording a program such as a movie on various types of optical discs, such as a CD-R or a CD-RW, while recording a program name, sample data, and recording of a corresponding program. If recording information such as start and end position information is stored and managed, and the recording operation is abnormally stopped due to an external shock or the like, and rewriting is requested, the program to be rewritten is referred to the recording information. In addition, the determination result, if the same, and if the same, from the stopped recording position, only the data not previously recorded among the program to be rewritten is selected and continuously recorded, and then the same program is closed by closing one session. By preventing repeated recording from the beginning, the recording time can be shortened. In addition, it is possible to prevent the program area of the optical disc from being wasted inefficiently.

1 to 3 illustrate embodiments of a general optical disc session closing process,
4 shows a configuration of an embodiment of an optical disk drive to which the present invention is applied;
5 is a flowchart illustrating an embodiment of an optical disc session control method according to the present invention;
6 illustrates an embodiment of open session information stored and managed according to the present invention;
7 illustrates an embodiment of a user selection menu displayed according to the present invention.
8 illustrates an embodiment in which a continuous write operation is performed according to the present invention.

Hereinafter, a preferred embodiment of the apparatus and method for controlling an optical disc session according to the present invention will be described in detail with reference to the accompanying drawings.

Apparatus and method for controlling an optical disk session according to the present invention may be applied to, for example, an optical disk drive (ODD) used to be connected to a host, such as a personal computer, or various types used independently of the host. It can be applied to the optical disk drive of.

4 shows a configuration of an embodiment of an optical disk drive to which the present invention is applied. For example, the optical disk drive 100 includes an optical disk 10, an optical pickup 11, a spindle motor 12, Sled motor 13, playback / recorder 14, codec 15, controller 16, motor driver 17, memory 18, OSD generator 19, interface 20, etc. This consists of including.

In addition, the controller 16 is connected to a host such as a personal computer through the interface unit 20. In the controller 16, for example, when an optical disc 10 such as a CD-R or a CD-RW is inserted, An initial servo operation is performed by controlling the motor driver 17, the optical pickup 11, and the like.

In addition, the controller 16 performs a data recording operation through an interface with the host 200. For example, while recording a program such as a movie, the recording operation is abnormal due to an external shock. In case of stopping, the program name, the sample data, and the start and end position information of the program are recorded, for example, open session information. Information) is stored and managed in the memory 18.

As described above with reference to FIG. 1, when the program write operation is normally performed, the session close operation is performed. If the recording is abnormally stopped and an open session is performed, the memory is subsequently executed. The open session information stored in (18) is searched to compare and determine whether the program to be rewritten is a previously stopped program.

On the other hand, as a result of the determination, if the program has been previously stopped recording, by referring to the open session information, only the data of the remaining part except the data of the already recorded part of the program to be rewritten is selected, and the recording position previously stopped. By performing continuous recording from, and performing a session close operation, it is possible to prevent repeated recording of the same program inefficiently, which will be described in detail below.

5 is a flowchart illustrating an embodiment of the method for controlling an optical disc session according to the present invention. As described above, the controller 16 performs an initial servo operation with the host 200. Through the interface operation, a series of program recording operations for recording a program such as a movie or the like onto an optical disc such as a CD-R or CD-RW is started (S10).

In addition, the controller 16 corresponds to a program name for identifying the program and a start of the program in preparation for a case in which a program recording operation is abnormally stopped due to an external shock or the like. As shown in FIG. 6, sample data, Sample data, and start position information on which the program is recorded, and end position information changed in real time, are displayed in the memory 18. In the memory 18, a nonvolatile memory such as a flash memory or EPI ROM is used.

On the other hand, in the controller 16, in a state in which the recording operation is abnormally stopped due to an external shock or the like (S12), if the recording resume is requested later (S13), the open session information and the rewrite request is requested. If the program is to be compared (S14), for example, if the program to be re-recorded and the program to be rewritten are the same program (S15), the OSD generation unit 19 is operated to control the OSD of the user selection menu. (OSD) An image is displayed (S16).

For example, as shown in FIG. 7, the program name previously recorded and the program name to be rewritten are the same as 'Skyblue', and sample data corresponding to the beginning of each program (for example, for 3 seconds immediately after the start of the program). Video data) is the same, the program name is guided and the OSD image of the user selection menu for selecting whether to continuously record is displayed.

When the user selects continuous recording through the user selection menu (S17), the controller 16 searches for end position information of the open session information and accesses the corresponding recording position. A continuous recording operation for selecting and recording unrecorded data among the programs to be rewritten is performed (S18).

On the other hand, if the program to be rewritten is not the same program or if the user does not select continuous recording, the controller 16 performs a normal program recording operation (S19).

For example, as shown in FIG. 8, in a state where an open session is made due to abnormal recording interruption while recording the first program, when re-recording of the first program is subsequently requested, recording is stopped previously. After accessing the end position, only the remaining unrecorded data is selected and continuously recorded, and closed in one session.

As a result, the same program can be prevented from being repeatedly recorded from the beginning again, the recording time can be shortened, and the program area of the optical disc can be prevented from being wasted inefficiently.

For reference, the open session information may be recorded in a specific area (for example, PMA) of the optical disc at a time when the recording operation is abnormally stopped, and the open session information may include a program name, sample data, start of recording and Various information other than the end position information may be additionally recorded.

If the recording end position information is not included in the open session information, the recording start position is accessed with reference to the recording start position information, and then a data scan operation is performed in the circumferential direction of the optical disc. Thus, the end position at which data was last recorded may be searched for.

Or more, preferred embodiments of the present invention described above, for the purpose of illustration, those skilled in the art, within the technical spirit and the technical scope of the present invention disclosed in the appended claims below, to further improve various other embodiments Changes, substitutions or additions will be possible.

100: optical disc drive 200: solid state drive
300: controller 10: optical disk
11: optical pickup 12: sled motor
13: spindle motor 14: play / record
15 digital signal processing unit 16 interface unit
17 controller 18 motor driver
19: memory 20: flash memory array
21: memory interface 22: controller
23: interface unit

Claims

A step 1 of storing and managing recording information on a corresponding program while performing a program recording operation;
Determining whether a program to be rewritten is the same as the stopped program, by referring to the recording information after the recording operation is abnormally stopped; And
If the determination result is the same, an optical disc session comprising three steps of selecting and continuously recording only data not previously recorded among the programs to be rewritten from the stopped recording position and then closing the data into one session. Control method.

The method of claim 1,
And the recording information is stored and managed in a nonvolatile memory as open session information including one or more of program name, sample data, recording start and end position information.

The method of claim 2,
And the step 2, if the program name and sample data included in the record information coincide with the program name and sample data of the program to be rewritten, determine the same program.

The method of claim 1,
In step 3, if the determination result is the same, a user selection menu for selecting whether to continuously record is displayed, and if the continuous recording is selected, the program is not previously recorded among the programs to be rewritten from the stopped recording position. An optical disc session control method, characterized in that only the data that has not been selected and recorded continuously and then closed in one session.

A recording unit for recording a program on the optical disk;
A storage unit for storing record information about the program;
If rewriting is requested after the recording operation is abnormally stopped, the recording information is referred to to determine whether the program to be rewritten is the same as the stopped program.
And a controller for selecting and continuously recording only data not previously recorded among the programs to be rewritten from the stopped recording position, and then closing the recorded data into one session.

6. The method of claim 5,
The recording information is open session information including any one or more of a program name, sample data, recording start and end position information of the recorded program, and the storage unit is a non-volatile memory, characterized in that the non-volatile memory .

The method of claim 6,
And if the program name and sample data included in the record information coincide with the program name and sample data of the program to be rewritten, the controller determines the same program as the same program.

6. The method of claim 5,
The determination result, if the same, further comprises a generation unit for generating a user selection menu for selecting whether or not continuous recording,
When the continuous recording is selected through the user selection menu, the control unit selects and continuously records only data not previously recorded among the programs to be rewritten from the stopped recording position, and then closes one session. Optical disk session control device.