Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal
Reexamination Certificate
2006-09-26
2006-09-26
Edun, Muhammad (Department: 2627)
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Mechanism control by the control signal
C369S047280, C369S059100, C369S059200
Reexamination Certificate
active
07113463
ABSTRACT:
An optical disk device that records and reproduces information on/from a recordable optical disk is provided. The optical disk device comprises a reference clock signal generating unit generating a data-writing reference clock signal used to obtain a data-writing timing upon recording data to the optical disk, a synchronizing signal generating unit generating a predetermined sector synchronizing signal from the data-writing reference clock signal, a data demodulating unit reading address information indicating a position on the optical disk from data recorded on the optical disk so as to demodulate the address information into a predetermined synchronizing signal, a displacement detecting unit detecting a displacement between a phase of the sector synchronizing signal and a phase of the synchronizing signal; and a data-writing control unit controlling a data-writing upon performing an additional recording to the optical disk by controlling a revolution of the optical disk dynamically according to the displacement.
REFERENCES:
patent: 5526339 (1996-06-01), Shimada
patent: 6529456 (2003-03-01), Kuodo et al.
patent: 10049990 (1998-02-01), None
Cooper & Dunham LLP
Edun Muhammad
Ricoh & Company, Ltd.
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