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Optical disc apparatus and method for reading information from an optical disk having tracks and spaces between the tracks on which address information is recorded
Optical disc apparatus and method for reading information from an optical disk having tracks and spaces between the tracks on which address information is recorded
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机译：光盘设备和用于从光盘读取信息的方法，该光盘具有磁道以及磁道之间的间隔，其上记录了地址信息
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摘要
An optical disc apparatus reads the address information from an optical disc which has tracks and track spaces formed between tracks. The apparatus has an optical head which irradiates the disc with light and includes tracking detectors, divided into a first detector and a second detector in a track direction, detecting the light reflected from the disc and outputting detection signals, an adjusting circuit which adjusts amplitudes of the first and second detection signals and outputs the signals at a position where the address information is recorded, a differential amplifying circuit which outputs the differential signal which is the difference between the adjusted first and second detection signals, and an address detecting circuit which detects the address information based on the differential signal. As a result, the optical disc apparatus accurately detects whether information is being recorded on a correct track and improves the reliability during recording.
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