Patent Number: 7,821,890

Title: Apparatus for writing a data to an optical storage media and servo control unit and laser diode driver unit thereof

Abstract: An apparatus for writing data to an optical storage media and a servo control unit and a laser diode driver unit thereof. The apparatus making a laser diode emit light includes a servo control unit and a laser diode driver unit. The servo control unit includes a control unit for controlling a burning procedure and a modulation unit for outputting an encoded signal. The laser diode driver unit receives the encoded signal and includes a PLL unit, a write strategy generation unit and a lock/unlock detection unit. The PLL unit outputs at least one of a second clock signal and a second data signal according to the encoded signal. The write strategy generation unit outputs a control signal to control the laser diode according to the second clock signal and the second data signal. The lock/unlock detection unit outputs a lock indicator or an unlock indicator to the control unit.

Inventors: Liu; Yuan-Chin (Hsinchu, TW), Wu; Wen-Yi (Jhubei, TW)

Assignee: Mediatek Incorporation

International Classification: G11B 7/00 (20060101)

Expiration Date: 2018-10-26 0:00:00