Patent Number: 7,133,348

Title: Phase lock loop for a controller in an optical disk system and methods therefor

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.

Inventors: Hsu; Tse-hsiang (Hsinchu, TW), Chen; Chih-cheng (Hsinchu, TW), Tsai; Chao Long (Chang Hwa Hsien, TW)

Assignee: Mediatek Inc.

International Classification: G11B 5/09 (20060101)

Expiration Date: 2019-11-07 0:00:00