Apparatus and method for detecting synchronization of...

Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Control of information signal processing channel

Reexamination Certificate

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C369S053340, C369S047280, C369S047310, C369S047480

Reexamination Certificate

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10771502

ABSTRACT:
An apparatus and method detecting synchronization of address in pre-groove (ADIP), allowing an optical storage device to write data to an accurate location of a disc includes a bit synchronization detecting unit and a word synchronization detecting unit. The bit synchronization detecting unit determines synchronization of bits of the ADIP to be in a bit synchronization locked state when synchronization of raw bits is detected within a bit synchronization window having a first predetermined period a first predetermined number of consecutive times. The word synchronization detecting unit determines synchronization of words of the ADIP to be in a word synchronization locked state when synchronization of raw words is detected within a word synchronization window having a second predetermined period the first predetermined number of consecutive times.

REFERENCES:
patent: 5661708 (1997-08-01), Yamawaki
patent: 6172947 (2001-01-01), Senshu
patent: 6536011 (2003-03-01), Jang et al.
patent: 6538982 (2003-03-01), Van Vlerken et al.
patent: 6952381 (2005-10-01), Schep et al.
patent: 2003/0128640 (2003-07-01), Schep et al.

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