KR100598279B1 - Apparatus and method for searching burst cutting area in optical disc device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a BC area search apparatus and method in an optical disc apparatus. For example, in an optical disc apparatus such as a DVD-Recorder or the like, a DVD-R or a rewritable DVD ( In the case of performing a search operation on a DVD-RW, it is checked whether the search is to the BCCA area, and when searching to the BC area, the intermediate position of the BC area is set as the target position. After performing the long jump operation, the bar code type information is recorded by quickly searching and reading the bar code type information recorded in the BC area without the fine search operation. It is a very useful invention that can shorten the time required to search BC region more efficiently.

Write once DVD-R, Rewritable DVD-RW, BCA area, DVD recorder, Long jump, Fine search, Bar code

Description

Apparatus and method for searching burst cutting area in optical disc device}             

1 shows some components of a general optical disc device,

2 illustrates a BCA area of a typical DVD-R / RW,

3 shows a disc structure of a DVD-R / RW to which the present invention is applied;

4 illustrates a configuration of an optical disk device to which the present invention is applied.

5 is a flowchart illustrating an operation of a BC area search method in the optical disk device according to the present invention.

※ Explanation of code for main part of drawing

10,20: optical disk 11,21: optical pickup

12,22: Spindle Motor 13,23: Sled Motor

24: motor driver 25: servo controller

26: RF processing unit 27: digital signal processing unit

28: micom

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a BC area search apparatus and method in an optical disc apparatus. In the case of performing a search operation in a BCA area of a DVD-RW, the present invention relates to a BC area search apparatus and method in an optical disc device for more efficiently reducing the time required for the search operation.

In general, optical discs capable of recording and storing high-definition video data and high-quality audio data for a long time, such as write-once DVD-R and rewritable DVD-RW, have been widely available and commercialized. In addition, optical disc devices such as DVD-Recorders have been developed and released and are commercially available.

Meanwhile, as shown in FIG. 1, the DVD recorder includes an optical pickup 11, a spindle motor 12, a sled motor 13, and the like. The spindle motor 12 includes an optical disc. 10 rotates at high speed, and the sled motor 13 moves the optical pickup 11 in a horizontal square.

In addition, in the DVD recorder, when performing a search operation according to a user's request, the sled motor 13 is rotated after searching and calculating the current position Current_Position and the target position Target_Position. The long jump operation for moving the recording position accessed by the optical pickup 11 is performed.

After confirming that the recording position accessed by the optical pickup 11 is the target position by the long jump operation, the optical pickup 11 is finely moved to search a target position in a series of fine search operations. By doing this, the target position is accurately searched.

However, in a general DVD recorder, as shown in FIG. As described above, since the long jump operation and the fine search operation are performed after searching and calculating the current position and the target position, the bar code type information is read out while the disc is rotated at any position in the radial direction of the disc. There is a problem that it takes a lot of time unnecessarily to search this possible BC area.

Therefore, the present invention was created to solve the above problems, for example, in the case of performing a search operation in the BCA area in an optical disc device such as a DVD-Recorder, etc. Set the middle position of the area as the target position, perform a long jump operation, and then quickly search for information in the form of a bar code recorded in the BC area without a fine search operation. SUMMARY OF THE INVENTION An object of the present invention is to provide a BC area search apparatus and method in an optical disk device for shipping.

The BC area search method of the optical disk device according to the present invention for achieving the above object comprises the steps of: checking whether the search to the BCA area when performing a search operation on the optical disk; And performing a long jump operation when searching for the BC area, and performing two steps of searching and reading information in a bar code form.

In addition, the BC area search apparatus in the optical disk apparatus according to the present invention comprises: an optical pickup for reading or recording data of the optical disk; Servo means for variably moving the recording position accessed by the optical pickup; And a search means for searching for and reading information in a bar code form by performing a long jump operation when searching for a BCA area of the optical disc.

Hereinafter, a preferred embodiment of a BC area search apparatus and method in an optical disk device according to the present invention will be described in detail with reference to the accompanying drawings.

First, in an optical disk to which the present invention is applied, for example, a DVD-R or a DVD-RW, a BCA (Burst Cutting Area) is previously used based on a lead-in area as shown in FIG. 3. ) Area, recording management area (RMA) area, and power calibration area (PCA) area are allocated to a predetermined recording size.

Also, as described above with reference to Fig. 2, the BCA area has recorded bar code type information (BCA-Code), so that no matter which position is accessed in the radial direction of the disc, the disc is rotated once. Information reading in the form of a bar code is enabled.

On the other hand, in the optical disk device to which the present invention is applied, for example, a DVD recorder, as shown in Fig. 4, the optical disk 20, the optical pickup 21, the spindle motor 22, the sled motor 23, the motor The driver 24, the servo controller 25, the RF processor 26, the digital signal processor 27, the microcomputer 28, and the like are included.

In the DVD recorder, when performing a search operation to the BCA area, an intermediate position of the BCA area, for example, sector numbers 0x0203C0 to 0x22F8F is set as a target position to perform a long jump operation. Thereafter, without a fine search operation, information of a bar code form recorded in the BC area is quickly searched and read.

Fig. 5 shows an operation flowchart of the BC area search method in the optical disk apparatus according to the present invention. For example, in the microcomputer 18, an optical disk 10 such as a DVD-R or a DVD-RW may be used. If the search mode is set in response to a user's request (S11) while reading and reproducing the data recorded at (S10), it is checked whether the search operation is a search operation to the BCA area.

On the other hand, when the search result is not the search operation to the BCA area, the microcomputer 28 detects and calculates the current position Current_Position and the target position Target_Position (S13), and the servo controller 25 ), The long jump operation is performed such that the recording position accessed by the optical pickup 21 is approached to the target position (S14).

In addition, after performing the long jump operation, the microcomputer 28 compares and confirms whether the recording position accessed by the optical pickup is the target position, and finely moves the optical pickup to search for a target position. While performing a series of fine search operations (S15), the target position is searched for (S16).

On the other hand, in the microcomputer 28, in the case of the search operation to the BCA area, after setting the intermediate position of the BCA area, for example, the sector number 0x0203C0 to 0x22F8F as a target position, the long (Long) The jump operation is performed, and without the fine search operation, information of the bar code type recorded in the BC area is quickly searched and read (S17).

Then, using the information read and retrieved as described above, the user requests? Since the operation is performed (S18), any position in the radial direction of the disk can be accessed, which prevents the time required to search the BC area capable of reading bar code information during one rotation of the disk. You can do it.

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.

The BC area search apparatus and method in the optical disk device according to the present invention constituted and constructed as described above can be recorded once in an optical disk device such as a DVD-Recorder or the like. When performing a search operation on a rewritable DVD (RW-RW), it is necessary to confirm whether the search is to the BCA area, and to search for the intermediate location of the BC area when searching to the BCA area. Set the position, perform a long jump operation, and then quickly search for and read information in a bar code form recorded in the BC area without a fine search operation, thereby performing a bar code form. It is a very useful invention that can more efficiently shorten the time required to search a BC area where information is recorded.

Claims (7)

When performing a search operation on the optical disc, checking whether the search is to a BCA area; And And searching for the bar code information by performing a long jump operation when searching the BC area. The method of claim 1, In the second step, after the long jump operation is performed by setting an intermediate position of the BC area as a target position, the bar code type information is searched and read without a fine search operation. BC area search method. The method of claim 1, If the search is not in the BC area, the method further comprises performing a long jump operation to a target position and then performing a fine search operation to search for the target position. BC area search method. Optical pickup for reading or recording data on the optical disk; Servo means for variably moving the recording position accessed by the optical pickup; And In the case of searching for a BCA area of the optical disc, the BC area search of the optical disc device comprises a control means for performing a long jump operation to search for and read information in a bar code form. Device. The method of claim 4, wherein The control means may set the intermediate position of the BC region as a target position, perform a long jump operation, and then search and read bar code information without a fine search operation. BC area search device. The method of claim 4, wherein When the control means does not search for the BC area, the control unit performs a long search operation to a target position and then performs a fine search operation to search for the target position. This area search device. The method of claim 4, wherein The optical disc is a DVD-R or DVD-RW in which a BCA area is divided and assigned between a lead-in area and an RMA area RMA, and the optical disc device is a DVD device. A BC area search apparatus for an optical disc apparatus, characterized by a recorder (DVD-Recorder).

Images