Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2008-01-15
2008-01-15
Edun, Muhammad (Department: 2627)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
C369S044270, C369S053120, C369S044320
Reexamination Certificate
active
07319643
ABSTRACT:
An apparatus for recording data on and reproducing data from the disk in which a recording area is divided into sectors, includes a reproducing signal generator for generating a reproducing signal including sum signals V1and V2of radial pairs, a sum signal RF_sum, and a push-pull signal RF_pp from an optical signal reflected from the disk, a header area detector for generating a header area signal including a header area from the reproducing signal, a first synchronous signal level detector for detecting a magnitude Ivfo1of a first synchronous signal in the first header by being synchronized with the header area signal, a second synchronous signal level detector for detecting a magnitude Ivfo3of a second synchronous signal in the second header by being synchronized with the header area signal, and a balance calculator for calculating the balance of the magnitude Ivfo1and the magnitude Ivfo3.
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Chung Chong-sam
Joo Seong-Sin
Ko Jung-wan
Lee Kyung-Geun
Ma Byung-In
Edun Muhammad
Samsung Electronics Co,. Ltd.
Stein, McEwen & Bui LLP
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