Testing system and method for distinguishing optical storage media recording district

Abstract

The present invention is an optical discriminating system used to discriminate the different recording regions on an optical storing medium. The optical discriminating system comprises an optical head, a signal full-adder and a full-adding comparer. The optical head has a light source to provide an incident beam to a data recording region and a head mark recording region on the optical storing medium and produce a corresponding reflecting beam. The optical head comprises a left detecting module and a right detecting module to detect the received reflecting beam and produce correspondingly a set of left detecting signal and a set of right detecting signal. The signal full-adder is used to full-add the set of left detecting signal and the set of right detecting signal and produce a full-adding signal. The full-adding comparer is used to compare the full-adding signal with a predetermined full-adding reference signal to obtain a full-adding comparing signal so as to determine it according to the full-adding comparing signal that the received reflecting beam comes from the data recording region or from the head mark recording region.

Description

technical field [0001] The invention relates to an optical distinguishing system for distinguishing different recording areas on an optical storage medium. Background technique [0002] 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 further divided into a header recording area (header) 11 for recording address information, and a data recording area (data area) 12 for storing audio and video data. The recording methods of the header recording area 11 and the data recor...

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

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