KR100540652B1 - Optical disc drive having a function for managing an additional information and controlling method therefor - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc drive, and more particularly, to an optical disc drive capable of efficiently managing additional information on an optical disc and contents recorded thereon, and a control method suitable thereto.

An optical disc drive according to the present invention comprises: an optical pickup unit for recording data on an optical disc or reading data recorded on an optical disc; A digital signal processing unit for reproducing data recorded on the optical disc from the reproduction signal provided from the optical pickup unit; An additional information memory for storing additional information about the optical disc and the contents recorded therein; And reading the disc identification symbol recorded on the optical disc by controlling the optical pickup unit and the digital signal processing unit when the optical disc is mounted, and additional information related to the recorded content when the content is recorded on the optical disc together with the disc identification symbol. And a control unit for controlling to store in the additional information memory.

The optical disc drive according to the present invention has an effect of easily managing the additional information related to the optical disc and the content by storing and managing the additional information related to the content recorded on the optical disc in a separate additional information memory installed in the optical disc drive.

Description

Optical disc drive having a function for managing an additional information and controlling method therefor}

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 a configuration of an optical disk drive according to the present invention.

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

FIG. 5 is a flowchart illustrating a control method for managing additional information in the window shown in FIG. 3.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc drive, and more particularly, to an optical disc drive capable of efficiently managing additional information on an optical disc and contents recorded thereon, and a control method suitable thereto.

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, the 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 writes the list information to 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.

Expanding the recording area in the recordable optical disc to accommodate such additional information, for example, setting an area for recording additional information other than the list information allowed on the optical disc, and adding additional information related to each content to this additional information recording area. How to record can be taken. In this case, the optical disc drive is programmed to access additional information along with the list information when the optical disc is mounted. However, this method is unique and lacks compatibility.

An object of the present invention is to provide an optical disc drive capable of efficiently managing additional information while maintaining the compatibility of the optical disc.

Another object of the present invention is to provide a control method suitable for the above optical disk drive.

An optical disk drive according to the present invention for achieving the above object

An optical pickup unit for recording data on or reading data recorded on the optical disc;

A digital signal processing unit for reproducing data recorded on the optical disc from the reproduction signal provided from the optical pickup unit;

An additional information memory for storing additional information about the optical disc and the contents recorded therein; And

When the optical disc is mounted, the optical pickup unit and the digital signal processing unit are controlled to read the disc identification symbol recorded on the optical disc, and when the content is recorded on the optical disc, additional information related to the recorded content is added together with the disc identification symbol. And a control unit for controlling to store the information in the information memory.

The control method of the optical disk drive according to the present invention to achieve the above another object is

An optical pickup unit for recording data on or reading data recorded on an optical disc, a digital signal processing unit for reproducing data recorded on an optical disc from a reproduction signal provided from the optical pickup unit, for the optical disc and contents recorded thereon A control method of an optical disc drive including an additional information memory for storing additional information, and a control unit for controlling the members.

If the optical disc is mounted, controlling the optical pickup unit and the digital signal processing unit to read the disc identification symbol recorded on the optical disc;

Determining whether additional information corresponding to the disc identification symbol read from the mounted optical disc is recorded in the additional information memory;

Reading additional information stored in the additional information memory and presenting the additional information stored in the additional information memory when the additional information corresponding to the disc identification symbol read from the mounted optical disc is recorded; And

And if the additional information corresponding to the disc identification symbol read from the mounted optical disc is not recorded in the additional information memory, recording the disc identification symbol read from the mounted optical disc into the additional information memory. do.

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 processor 116 generates a recording pulse corresponding to the NRZI signal and provides it to the optical pickup device 104. The recording pulse drives a laser diode (not shown) provided in the optical pickup device 104 to generate a laser signal, and data is recorded on the disc 100 by the laser signal. The optical pickup device 104 records data on the disc 100, 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 optical pickup device 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, of the optical pickup device 104 in accordance with the servo error signals provided from the reproduction signal processing unit 106 Control the slide servo and so on.

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 120.

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 optical pickup device 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 optical pickup device 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, and locates the optical pickup device 104 at the recording start position through a track search operation. Read the header 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 can be used to test the guard track zone, which plays a buffer role again, the disc test zone used by the disc manufacturer to evaluate the disc, and the recording and playback characteristics of the drive in the recording / reproducing apparatus. A drive test zone for recording data, a data control area for recording list information related to the contents recorded on the disk in a disc identification zone in which a disc's identification symbol is recorded, and a defect management information. It is divided into defect management information areas (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 disc recognition area.

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 Recording date and time 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 and the recording time are obtained by referring to a timer (not shown), and the recording mode is obtained by referring to the user set through the operation panel or the ozone clean 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 a configuration of an optical disk drive according to the present invention. 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 Recording date and time 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, the disc identification number is unique to each disc and may be a number or a name. 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. As shown in Fig. 4, an example of an additional information memory capable of storing additional information for ten disks is shown.

FIG. 5 is a flowchart illustrating a control method for managing additional information in the window shown in FIG. 3.

First, when the optical disc is mounted, the disc identification symbol recorded in the disc identification area of the lead-in area is read out (S502).

The control unit 112 controls the servo unit 114 to rotate the optical disc 100, while moving the optical pickup device 104 to the lead-in area of the optical disc 100 to display the disc identification symbol recorded in the disc identification area. Read out.

It is discriminated whether or not it is a new optical disk. (S504) Specifically, the control unit 112 checks whether additional information corresponding to the disk identification symbol read out from the mounted disk is already recorded in the additional information memory 302.

If it is determined in step S504 that the loaded disc is not a new optical disc, that is, additional information corresponding to the read disc identification symbol is already recorded in the list information memory 302, the additional information of the corresponding optical disc from the additional information memory 302. The present invention reads and presents the information to be queried by the user (S506). For example, the read additional information is displayed through the display device.

If it is determined in step S504 that the mounted optical disc is a new optical disc, that is, additional information corresponding to the read disc identification symbol is not recorded in the additional information memory 302, the data for the new optical disc is stored in the additional information memory 302. The area is set and the disc identification symbol is recorded. (S508) If the disc identification symbol is not recorded on the optical disc, the optical disc player guides the user to input the disc identification symbol, and the user inputs the key identifier 114 from the user. The input disc identification symbol is recorded in the disc identification symbol area of the lead-in area on the additional information memory 302 and the optical disc.

Thereafter, the controller 112 accesses the contents of the optical disc, reads additional information related to the contents, and stores the additional information related to the contents in the additional information memory 302.

When content is recorded in advance on a new optical disc, additional information of the recorded content may be obtained and recorded through a batch read operation, or may be obtained and recorded each time each content is accessed.

When recording new content on the mounted optical disc, the title of the content is first input (S510).

When the recording is finished, the title, recording date and time, recording time, recording mode, and the like of the content are stored in the additional information memory 302 (S512).

The optical disc drive according to the present invention stores and manages additional information related to contents recorded on the optical disc in a separate additional information memory installed in the optical disc drive. Whenever content is recorded on the optical disc, the corresponding information is added to the additional information memory. In addition, when the optical disc is mounted, the optical disc drive refers to the additional information memory to inquire whether the additional information about the corresponding disc is recorded, and if the additional information is recorded, reads it and presents it to the user. Therefore, even if the user does not access the contents one by one, it is possible to easily identify additional information related to the disc and the contents.

In addition, the optical disc drive according to the present invention stores the additional information in the memory installed in the optical disc drive rather than recording the additional information, thereby efficiently managing the additional information without compromising the compatibility of the optical disc.

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

In other words, it should be noted that the optical disc drive of the present invention has an additional information memory for storing additional information on the optical disc and the contents recorded therein, and the spirit thereof should be understood by the appended claims. .

As described above, the optical disc drive according to the present invention stores and manages additional information related to contents recorded on the optical disc in a separate additional information memory installed in the optical disc drive, so that the additional information related to the optical disc and contents can be easily managed. Has an effect.

In addition, the optical disk drive according to the present invention has the advantage that the additional information is stored in the memory installed in the optical disk drive rather than the optical disk to efficiently manage the additional information without compromising the compatibility of the optical disk.

Claims (8)

An optical pickup unit for recording data on or reading data recorded on the optical disc; A digital signal processing unit for reproducing data recorded on the optical disc from the reproduction signal provided from the optical pickup unit; An additional information memory for storing additional information about the optical disc and the contents recorded therein; And When the optical disc is mounted, the optical pickup unit and the digital signal processing unit are controlled to read the disc identification symbol recorded on the optical disc, and when the content is recorded on the optical disc, additional information related to the recorded content is added together with the disc identification symbol. An optical disk drive including a control unit for controlling to store in the information memory. The optical disc drive of claim 1, wherein the additional information memory is a rewritable nonvolatile memory. The optical disc drive according to claim 2, wherein the additional information memory has a plurality of recording areas divided by disc identification symbols. An optical pickup unit for recording data on or reading data recorded on an optical disc, a digital signal processing unit for reproducing data recorded on an optical disc from a reproduction signal provided from the optical pickup unit, for the optical disc and contents recorded thereon A control method of an optical disc drive including an additional information memory for storing additional information, and a control unit for controlling the members. If the optical disc is mounted, controlling the optical pickup unit and the digital signal processing unit to read the disc identification symbol recorded on the optical disc; Determining whether additional information corresponding to the disc identification symbol read from the mounted optical disc is recorded in the additional information memory; Reading additional information stored in the additional information memory and presenting the additional information stored in the additional information memory when the additional information corresponding to the disc identification symbol read from the mounted optical disc is recorded; And And if the additional information corresponding to the disc identification symbol read from the mounted optical disc is not recorded in the additional information memory, recording the disc identification symbol read from the mounted optical disc into the additional information memory. Control method. The method of claim 4, further comprising: generating a disc identification symbol if the disc identification symbol is not recorded on the mounted optical disc, and recording the disc identification symbol generated by controlling the optical pickup unit on the mounted optical disc. The control method of the optical disk drive, characterized in that. 6. The method of claim 5, wherein the disc identification symbol is a series of numbers. The method of claim 5, wherein the disc identification symbol is a letter symbol input by a user. The method of claim 4, wherein Acquiring additional information related to the content when content is recorded on the optical disc; And And recording the additional information in the additional information memory for each disc identification symbol.

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