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Recording header signal and method and apparatus for reproducing header signal

一种记录首标、首标的技术，应用在光学记录/再现/擦除方法、数字记录/再现、记录信息存储等方向，能够解决界限困难、降低首标信息可靠性等问题

Inactive Publication Date: 2005-08-10
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, it is difficult to accurately detect the boundary between the wobble track on which the wobble signal is recorded and the header area 3, thereby reducing the reliability of the detected header information.

Method used

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  • Recording header signal and method and apparatus for reproducing header signal
  • Recording header signal and method and apparatus for reproducing header signal
  • Recording header signal and method and apparatus for reproducing header signal

Examples

Experimental program
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Embodiment Construction

[0033] refer to figure 2 , a spiral wobble track for recording user data is formed on the optical disc. Swing tracks include groove tracks and platform tracks. In addition, the swing orbits may be concentric circles. A wobble signal of a specific frequency is recorded on the wobble track. A plurality of header areas 2 on which header information is recorded are located between adjacent wobble tracks. In this way, the positions of the wobble track and the header area 2 alternate with each other.

[0034] refer to image 3 , a single wobble signal with a single frequency is recorded on the groove and land tracks. A recording layer that can overwrite or record data only once is applied to the groove and land tracks. If user data is recorded, a mark is formed on the recording layer. The tracks are continuously formed on the header area 2 so that they correspond to the groove and land tracks of the user data area. A header signal having header information is recorded on a tr...

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PUM

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Abstract

Provided is an optical recording medium on which a header signal having multi-modulated header information is recorded, an apparatus and method of recording the header signal, and an apparatus and method of reproducing header information from the header signal of the optical recording medium which includes a wobbled track on which user data is recorded, and a header area in which a header signal having multi-modulated header information is recorded. Accordingly, the optical recording medium increases the recording density of header information, thereby providing a wider user data area.

Description

technical field [0001] The present invention relates to optical recording and reproduction, and in particular to an optical recording medium on which a wobble track of user data is recorded, comprising a header area on which a header signal having header information is recorded, for recording the header signal A method and apparatus, and a method and apparatus for reproducing a header signal. Background technique [0002] The optical recording medium has a header area on which header information is recorded and a user data area on which user data is recorded. In 2.6GB or 4.7GB DVD-RAM, 128-byte header information is recorded in the form of pre-pit when the disk base is produced. According to the DVD-RAM specification, the header area on which the pre-pit is formed when the disk base is produced includes a variable frequency oscillator (VFO) area for a phase-locked loop (PLL), a physical authentication area for recording addressing information A dat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/004G11B7/007G11B7/24082G11B20/12
CPCG11B7/007G11B7/00745
Inventor 李坰根朴仁植崔炳浩沈载晟尹斗燮
Owner SAMSUNG ELECTRONICS CO LTD