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Detecting system and method for identifying optic storage medium recording area

A technology for storage media and discrimination methods, applied in optical recording/reproduction/erasing methods, optical record carriers, recording/reproduction with optical methods, etc., can solve problems such as tracking deviation and easy vibration of the optical head, and avoid The effect of discriminant error

Inactive Publication Date: 2006-06-07
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This situation occurs most often when the optical head moves from the header area to the data recording area, because the optical head is prone to vibration at this time, which makes the tracking deviation

Method used

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  • Detecting system and method for identifying optic storage medium recording area
  • Detecting system and method for identifying optic storage medium recording area
  • Detecting system and method for identifying optic storage medium recording area

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Embodiment Construction

[0036] The object of the present invention is to provide an optical judging system for judging different recording areas on an optical storage medium. The optical storage medium includes at least one land storage track and at least one groove storage track, and each track can be divided into a central part and two peripheral parts. The optical storage medium can be a rewritable digital versatile disc (DVD-RAM).

[0037] Such as figure 1 A storage track 13 shown can be divided into a central portion 16 and peripheral portions 16 on both sides. A plurality of storage areas (sectors) 10 are disposed on the storage track 13 , and each storage area 10 can be divided into a central portion 15 and a peripheral portion 16 . Each storage area 10 includes a data recording area (data area) 12 for recording a digital audio-video data, and a header recording area (header) 11 for recording an address information. The digital data is stored in the central portion 15 of the data recording ...

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PUM

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Abstract

The present invention relates to optical system for distinguishing different record areas in optical storing medium. The optical system includes one optical head, one signal adder and one comparator. The optical head has one light source to provide one incoming light beam to the data record area and header label record area of the optical storing medium and generate one corresponding reflected light beam; and one right detecting module and one left detecting module to detect the reflected light beam and to generate one right detection signal and one left detection signal. The signal adder adds the amplitude of the right detection signal and that of the left detection signal to produce one sum signal. The comparator compares the sum signal with one preset reference signal to obtain one output signal, which is used in determining whether the detected reflected light beam is from the data record area or the header label record area.

Description

[0001] This application is a divisional application of the application No. 02145872.3 titled "Detection System and Method for Discriminating Recording Areas of Optical Storage Media" filed with China Patent Office on October 16, 2002. technical field [0002] The invention relates to an optical distinguishing system for distinguishing different recording areas on an optical storage medium. Background technique [0003] See figure 1 , figure 1 It is a schematic diagram of the structure of the storage area of ​​the optical disc. A generally known rewritable digital audio-visual disc (DVD-RAM) uses two storage tracks 13 to record various data, which are respectively a land storage track and a groove storage track. , both tracks can be used to store data, and no matter what kind of track, it can be divided into a central part 15 and peripheral parts 16 on both sides, and each piece of complete data is classified as a storage area (sector) 10, each A storage area 10 can be fur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/00G11B7/004G11B7/007G11B7/09G11B7/13G11B20/18
Inventor 林永裕
Owner MEDIATEK INC
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