Phase lock loop for a controller in an optical disk system...

Details Phase lock loop for a controller in an optical disk system... Phase lock loop for a controller in an optical disk system...

2006-11-07

2006-11-07

Edun, Muhammad (Department: 2627)

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal detecting using a clock signal

C369S047480, C369S047280, C369S059100

Reexamination Certificate

active

07133348

ABSTRACT:
The invention provides a phase lock loop (PLL) in a controller of an optical disk system and methods therefor. According to a preferred embodiment of the invention, the PLL comprises a write phase detector, a read phase detector, and a common read/write module shared by the write and read phase detectors. Further according to the invention, the common read/write module comprises a read/write mode selector coupled to the write and read phase detectors, a charge pump coupled to the mode selector, a loop filter coupled to the charge pump, and a voltage control oscillator (VCO) coupled to the loop filter.

REFERENCES:
patent: 6909678 (2005-06-01), Morishima
patent: 2002/0181362 (2002-12-01), Koide
patent: 2002/0186633 (2002-12-01), Kai et al.

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