KR20040067578A - Method for managing an additive information of optical disc drive - Google Patents

Abstract

PURPOSE: A method for managing additional information of an optical disk drive is provided to enable an optical disk drive to maintain/manage additional information related to plural optical disks and contents recorded on the optical disks, so that a user can effectively manage information on the user's optical disk. CONSTITUTION: A system obtains additional information on disk identification symbols for an accessed optical disk, and information on contents recorded on the optical disk(S502). The system stores the obtained additional information in a nonvolatile memory according to each disk identification code(S504). A user refers to the additional information recorded in the nonvolatile memory(S506). The system supplies an on-screen menu for permitting the user to refer to the recorded additional information.

Description

Method for managing an additive information of optical disc drive

The present invention relates to an optical disc drive, and more particularly, to an additional information management method of an optical disc drive capable of efficiently managing additional information on a plurality of optical discs and contents recorded thereon.

As is well known, optical discs, such as recording storage media, have been developed and disseminated, including commercially available CDs and DVDs, which store a large amount of information as compared to CDs.

Such optical discs are classified into non-recordable reproduction-only and rewritable recordings. In the former case, there are CD-ROMs and DVD-ROMs. It is divided into WORM (Write Once Read Many) type such as R, and Random Access Memory (RAM) type such as CD-RW and DVD-RAM which can be repeatedly recorded.

As is known, basic information (list information) about the contents recorded on the optical disc is recorded in the lead-in area. The list information includes the recording start position and the recording end position of the content.

When the optical disc is mounted, the optical disc drive reads list information recorded in the lead-in area of the optical disc, for example, a table of contents (TOC) of the compact disc, and stores it in the memory. Thereafter, the optical disk drive refers to the list information stored in the memory and performs playback, recording, and the like. Meanwhile, the list information stored in the memory is erased when the power of the optical disc drive is turned off, and replaced with the new list information when a new optical disc is mounted.

In the case of recording content on a recordable optical disc, the optical disc drive records the list information in the file system at the beginning of the data area (31000 in the case of DVD-RAM) after the recording is completed. This list information is read when the optical disc is mounted in the drive, stored in the memory, and referenced.

In the current optical disc, the list information is defined to accommodate only information necessary for track search of the optical disc drive, such as a recording start position and a recording end position. Other Additional Information For example, the name of the content, the recording time, the recording capacity, the recording mode, and the like are recorded in the header portion of the content. When the additional information is required, the optical disc drive accesses the location where the corresponding content is recorded, reads the additional information included in the header information, and provides the same to the user. Therefore, it is inconvenient that a user must access each content in order to know these additional information.

On the other hand, the user may have a plurality of optical disks. However, there is a problem in that when the user plays the optical disc that has been used before, the user needs to refer to the additional information through the above-described operation.

On the other hand, a user may maintain a separate list of additional information on a plurality of optical discs held by the user for the purpose of facilitating indexing of the optical discs. However, a new optical disc may be acquired or changed in the contents of the optical disc. It is inconvenient to use because you have to maintain the list every time.

An object of the present invention is to provide an additional information management method of an optical disk drive which can efficiently manage additional information related to a plurality of optical disks and contents recorded in the optical disk drive. .

1 is a block diagram showing the configuration of a conventional optical disc drive.

2 shows a schematic structure of a disc according to the DVD-RAM standard.

3 is a block diagram showing the configuration of an optical disk drive to which the additional information management method according to the present invention is applied.

FIG. 4 shows the data format of the additional information memory shown in FIG.

5 is a flowchart illustrating a method of managing additional information according to the present invention.

6 shows an example of the configuration of a menu for managing additional information in the additional information management method according to the present invention.

The additional information management method of the optical disk drive according to the present invention for achieving the above object is

In the control method of an optical disk drive having a nonvolatile memory,

Obtaining disc identification symbols for the accessed optical disc and additional information about the contents recorded thereon;

Storing the obtained additional information in the nonvolatile memory for each disc identification symbol; And

And allowing a user to refer to the additional information recorded in the nonvolatile memory.

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

1 is a block diagram showing the configuration of a conventional optical disc drive. In the apparatus shown in FIG. 1, the write modulator 118 modulates and outputs data to be recorded in a non-return to zero (NRZI) manner. The recording signal processing unit 116 generates a recording pulse corresponding to the NRZI signal and provides it to the pickup unit 104. The recording pulse drives a laser diode (not shown) provided in the pickup section 104 to generate a laser signal, and data is recorded on the disc 100 by the laser signal. The pickup unit 104 records data on the disc 100 and reads the data recorded on the disc 100 and provides the data to the reproduction signal processing unit 106. The reproduction signal processing unit 106 amplifies and outputs the reproduction signal provided from the pickup unit 104 with a predetermined amplification, and detects error signals from each other for various servo control from the reproduction signal. On the other hand, the spindle motor 102 rotates the disk 100, the servo unit 114 is a tracking servo, focus servo, slide of the pickup unit 104 in accordance with the servo error signals provided from the reproduction signal processing unit 106 To control the servo.

The controller 112 controls the overall operation of the apparatus shown in FIG. 1. The controller 112 is implemented as a microprocessor, and a program for controlling the microprocessor is stored in the ROM 420.

The list information and additional information reproduction operation in the apparatus shown in FIG. 1 will be described in detail.

When the optical disc is mounted, the controller 112 controls the servo unit 114 to rotate the optical disc 100, while moving the pickup unit 104 to the lead-in area of the optical disc 100 to read the list information. The list information includes information such as a recording start position, a recording end position, and the like. The RF signal detected by the pickup unit 104 is waveform-formed into digital data through the reproduction signal processing unit 106, and the original list information is restored through the digital signal processing unit 110.

The list information reproduced by the digital signal processing unit 110 is stored in the RAM 122. The controller 112 reads the list information stored in the RAM 122 and displays it through the display device so that the user can check and select the list information.

When the user selects the content to be played back through the key input unit 114 or the on-screen menu, the control unit 112 obtains the recording start position of the selected content from the list information recorded in the RAM 122, and selects the selected content. Control to play the content. The list reproducing and storing operation is performed every time the optical disc 100 is mounted, and the list information stored in the RAM 122 is replaced with the list information of the new optical disc.

If the additional information is required, the optical disc drive obtains a recording start position of the corresponding content by referring to the list information stored in the RAM 122, places the optical pickup 104 at the recording start position through a track search operation, and then stores the header of the corresponding content. Read the information. The additional information is obtained from the header information and presented to the user.

Therefore, in the conventional optical disc drive, there is a problem that it is difficult to know additional information unless the user checks each content one by one.

2 shows a schematic structure of a disc according to the DVD-RAM standard. DVD-RAM discs are largely divided into a lead-in area, a lead-out area and a data area. In addition, a rewritable data zone capable of recording according to physical characteristics, an embossed data zone in which recording is not possible and the data is in the shape of a pit, and a mirror area that serves to connect the two areas It can be divided into (Mirror zone).

The lead-in area is divided into an embossed data area, a mirror area, and a rewritable area according to physical properties, and information on the physical properties of the disc is recorded in the embossed area. In addition, the rewritable area is a guard track zone that acts as a buffer again, a disc test zone used by a disc manufacturer to evaluate a disc, and a recording / playback characteristic of a drive in a recording / reproducing apparatus. The drive test zone is divided into a drive test zone, a disc identification zone in which disc identification symbols are recorded, and a defect management information zone in which defect management information is recorded (DMA1 & DMA2).

The lead-out area is composed of a rewritable area in a 2.6 GB (giga byte) DVD-RAM disc, which is a rewritable area of the lead-in area arranged in reverse order. That is, the defect management information area, the disc recognition area, the guard track area, the drive test area, the disc test area, and the guard track area are in this order.

Table 1 shows an example of the list information recorded in the file system. The file system is located at the beginning of the data area, and information such as a recording start position and a recording end position is recorded.

Content number Recording start position Recording end position One 03/00/00 03/20/00 2 03/20/01 03/50/00

On the other hand, the additional information is included in the header information of each content, and examples of the additional information are shown in Table 2.

Title of the content Date and time of recording Recording time Recording mode news 10/10/2002 20 minutes SP Drama_1 2001/10/3 30 minutes SP

In Table 2, the recording mode indicates the type of recording mode, for example, SP (Short Play), LP (Long Play), or the like. In the recording operation, the recording date and time are obtained by referring to a timer (not shown), and the recording mode is obtained by referring to what the user has set through the operation panel or the on-screen menu.

In the conventional optical disc drive, there is a problem that it is difficult to know the additional information as shown in Table 2 unless the user checks each content one by one.

3 is a block diagram showing the configuration of an optical disk drive to which the additional information management method according to the present invention is applied. In FIG. 2, the same reference numerals are added to those performing the same operation as the member shown in FIG. 1, and descriptions thereof will be omitted.

The apparatus shown in FIG. 3 is characterized by including an additional information memory 302. The additional information memory 302 stores additional information about the optical disc and the contents recorded thereon. Each time content is recorded on the optical disc, additional information about the content is added to the additional information memory 302. The additional information memory 302 records additional information for each optical disc and for each content, and the contents recorded therein are referred to every time the optical disc is mounted. The additional information memory 302 may be implemented as a rewritable nonvolatile memory, for example, a Flash ROM, an EEPROM, or the like.

Table 3 shows an example of additional information recorded in the list information memory 302 shown in FIG.

Disk identification number Content number Content title Date and time of recording Recording time Recording mode MBC_1 One news 2002/10/02 20 minutes SP MBC_1 2 Drama_1 2002/10/03 30 minutes LP KBS_1 One news 2002/10/04 20 minutes SP KBS_1 2 Drama_1 2002/10/05 40 minutes LP

In Table 3, disc identification numbers are unique to each disc and can be numbers or names. When the disc identification symbol is named, the user can more easily recognize the contents of the content recorded on the disc. For example, as shown in Table 3, the disc identification number 'MBC_1' can easily indicate that the disc is the first of the optical discs recording the programs of the MBC broadcast.

The disc identification number may be automatically assigned by the optical disc drive or directly by the user. In order to allow the user to assign a disc identification code, the optical disc drive is programmed to guide the user in entering the disc identification number after the new optical disc is mounted.

Similarly, in order to allow the title of the content to be given by the user, the optical disc drive is programmed to guide the user to enter the title of the content before or after the recording operation is performed.

FIG. 4 shows the data format of the additional information memory shown in FIG. In the additional information memory 302, an area allocated for each disk may have a certain size. 4 shows an example of an additional information memory capable of storing additional information for ten discs.

5 is a flowchart illustrating a method of managing additional information according to the present invention.

First, the disc identification symbol for the optical disc to be accessed and additional information about the contents recorded therein are obtained (s502).

When the optical disc is mounted, the control unit 112 controls the servo unit 114 to rotate the optical disc 100, while moving the pickup unit 104 to the lead-in area of the optical disc 100 and recorded in the disc identification area. Read the disc identifier.

The control unit 112 checks whether the additional information corresponding to the disc identification symbol read out from the loaded disc is already recorded in the additional information memory 302. If the mounted optical disc is a new optical disc, that is, no additional information corresponding to the read disc identification symbol is recorded in the additional information memory 302, the disc identification symbol is set. To this end, the optical disc player guides the user to input the disc identification symbol, and records the disc identification symbol input from the user through the key input unit 114 in the disc identification symbol area of the lead-in area. On the other hand, in the additional information memory 302, a disc identification symbol set for a new optical disc is recorded, and a data area for recording additional information for a new optical disc is set.

In addition, each time the content recorded on the optical disc is accessed, the control unit 112 obtains additional information related to the content.

The obtained additional information is stored in the additional information memory for each disc identification symbol (s504).

The control unit 112 records additional information about the content in the additional information memory 302 for each disc identification symbol.

The contents recorded in the additional information memory are provided to the user (s506). An on-screen menu is provided for managing additional information by the user. The user can perform inquiry of additional information for the entire optical disk, registration of additional information for a new optical disk, and correction and deletion of registered additional information through the on-screen menu.

6 shows an example of the configuration of a menu for managing additional information in the additional information management method according to the present invention.

As shown in FIG. 6, a menu for managing additional information provides functions of 1. displaying an entire disk, 2. registering a new disk, and 3. modifying and deleting a disk.

Each function is activated by the user inputting a number corresponding to each function through the key input unit 114.

7 shows an example displayed on the screen when the entire disk display function is selected. As shown in Fig. 7, a disc identification symbol is displayed in the left column, and contents recorded on the selected optical disc and additional information related thereto are displayed in the right column. The disc identification symbol of the selected optical disc is highlighted in order to be identified with other optical discs.

The user can select the optical disc by manipulating the key input unit 114 and additional information related thereto recorded on the selected optical disc is displayed in the right column.

The control unit 112 refers to the content recorded in the additional information memory 302 in order to display the content as shown in FIG.

FIG. 8 is a flowchart illustrating an operation example when 'new disk registration' is selected in the menu shown in FIG.

First, a guide to insert an optical disc to be registered is performed (s802).

When the optical disc is inserted, the disc identification symbol and additional information related to each content are read. (S804) The control unit 112 obtains a recording start position of each content by referring to the contents recorded in the data control area, and uses the respective contents to obtain a recording start position. Read additional information included in header information of.

If there is no disc identification symbol or title of each content, it is guided to input them (s806).

The disc identification symbol and the additional information are stored in the additional information memory 302 (s808).

FIG. 9 is a flowchart illustrating an operation when the 'edit and delete disk' function is selected in the menu shown in FIG.

First, the additional information of the selected optical disc is read from the additional information memory 302 and displayed on the screen (s902).

Here, it is assumed that the correction function is set by the enter key and the delete function is set by the delete key.

If the enter key is input while the item to be corrected is highlighted, the process proceeds to the correction mode (s904).

(S906) For example, if the enter key is pressed while the content title is highlighted, the title of the content is modified. The new title input by the user is accepted and the additional information memory ( The title of the corresponding content of 302 is replaced.

If the delete key is input while the item to be deleted is highlighted, the process proceeds to the delete mode (s908).

Confirm the deletion (s910).

When it is confirmed that the data is to be deleted, the optical disk is accessed to delete the corresponding content (s912). In addition, the additional information memory 302 also deletes the additional information about the corresponding content.

In the present invention, recording time, recording time, recording mode, and the like have been disclosed as examples of the additional information, but the present invention is not limited thereto. For example, the additional information may be a shooting time, a location, a summary of shooting contents, and the like, and these may vary depending on the application field of the optical disc player.

As described above, the method for managing additional information of the optical disc drive according to the present invention enables the user to efficiently maintain information about the optical disc held by the user by maintaining and managing the additional information related to the plurality of optical discs and the contents recorded thereon in the optical disc drive itself. It has the effect of making it manageable.

Claims (7)

In the control method of an optical disk drive having a nonvolatile memory, Obtaining disc identification symbols for the accessed optical disc and additional information about the contents recorded thereon; Storing the obtained additional information in the nonvolatile memory for each disc identification symbol; And And a step of allowing a user to refer to the additional information recorded in the nonvolatile memory. The method of claim 1, further comprising providing an on-screen menu for allowing a user to refer to the additional information recorded in the nonvolatile memory. 3. The method of claim 2, wherein the menu has a function of displaying at least the additional information recorded in the nonvolatile memory for each disc identification symbol. 4. The additional information management of the optical disc drive according to claim 3, wherein the menu further comprises a function of registering disc identification symbols of the optical disc which are not recorded in the nonvolatile memory and additional information on the contents recorded therein. Way. The method of claim 4, wherein the menu further comprises a function of setting a disc identification symbol when the disc identification symbol is not set in the optical disc to be registered. 4. The method of claim 3, wherein the menu further includes a function of modifying additional information recorded in the nonvolatile memory. 7. The method of claim 6, wherein the menu further includes a function of deleting additional information recorded in the nonvolatile memory.