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PROBLEM TO BE SOLVED: To detect precisely the BCA data even when the number of disk revolution are shifted from a prescribed value, and a track servo is turned off. SOLUTION: An analog signal 2 is binarized by an RF binarization means 3 of a system digital controlling a slice level, and a detection...

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Bibliographic Details
Main Authors SUGANO HIROYUKI, MIYAZAWA TAKAO, IWASHITA TAKAHIRO
Format Patent
LanguageEnglish
Published 30.11.1999
Edition6
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To detect precisely the BCA data even when the number of disk revolution are shifted from a prescribed value, and a track servo is turned off. SOLUTION: An analog signal 2 is binarized by an RF binarization means 3 of a system digital controlling a slice level, and a detection pulse 8 is generated by a detection pulse generation means 50 when the digital pulse width of the regenerative pulse 4 of the output of the binarization means 3 is a prescribed length or above is detected, and the BCA data are reproduced with the BCA detection pulse by a demodulation decoding means 9.
Bibliography:Application Number: JP19990067169