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Method and apparatus for detecting plat form preset pit address information recorded on CD

By using components such as window generation circuits and data detection circuits in DVD-RW discs, the problem of difficulty in LPP data detection is solved, accurate detection of address information and synchronization signals on the disc is achieved, and the quality and efficiency of recording equipment are improved. .

Inactive Publication Date: 2006-04-05
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] According to DVD-RW technical requirements, since the recording position of LPP data is determined during the burning process, it is difficult to accurately detect LPP data

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] figure 1 and 2 is a reference diagram showing recordable discs.

[0035] refer to figure 1 , a recordable optical disc includes a spiral track. refer to figure 2 , to record a moiré signal on a track divided into a land track and a groove track. Here, user data is recorded only on the groove track, and address information is recorded on the land pre-pits. Here, the address information recorded on the land pre-pit is referred to as land pre-pit (LPP) data. The LPP signal is recorded during the burn process to report the on-disk physical address to be passed to the pickup.

[0036] Figures 3 to 5 is a reference diagram showing the method of recording LPP data.

[0037] refer to image 3 and 4 , one error correction code (ECC) block is composed of 16 sectors, and one sector consists of 26 frames. In addition, one frame includes 8 cycles of the ripple signal. If a period of the ripple signal is called a ripple, then every other frame, corresponding to the first ...

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Abstract

An apparatus and a method for detecting address information are provided. The apparatus for detecting address information from an optical disc on which a plurality of sectors are arranged and pre-pit data are recorded on each sector, includes: a window generation circuit for generating a detection window for detecting the pre-pit data; a data detection circuit for detecting the pre-pit data based on the generated detection window; a latch for latching the data detected by the data detection circuit to a larger number of bits than a pre-allotted number of bits; a synch information extraction circuit for generating synch information informing a time to refer to the latched data; and an address information extraction circuit for detecting address information by reading the latched data based on the generated synch information. Therefore, the address information recorded on an optical recording medium as land pre-pit (LPP) data can be efficiently detected.

Description

[0001] CROSS REFERENCE TO RELATED APPLICATIONS [0002] This application is based on and claims the benefit of priority from Korean Patent Application No. 01-76234 filed on Dec. 4, 2001, which is hereby incorporated by reference. Technical Field [0003] The present invention relates to an optical disc recording medium, and more particularly to a method and device for detecting land pre-pit address information recorded on an optical disc recording medium having a wobble track. Background Art [0004] Recordable optical discs, such as DVD-R (Digital Video Disc Write Once), DVD-RAM (Digital Video Disc Random Access), DVD+RW (Digital Video Disc Read and Write), and DVD-RW (Digital Video Disc Read and Write), contain spiral tracks on which ripple signals are recorded. In the case of DVD-RAM, user data is recorded on the land track and the groove track, and address information is recorded in a separate header area. However, in the case of DVD-RW / DVD+RW, specific user data is recor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/007G11B19/12G11B20/12G11B20/10G11B7/005G11B27/19G11B27/24
CPCG11B27/24G11B7/0053G11B7/00745G11B2220/216G11B2220/2562G11B20/10
Owner SAMSUNG ELECTRONICS CO LTD