Optical Disk Recording Apparatus, Laser Diode Driving Apparatus and Recording Signal Generating Apparatus

Abstract

The optical disk recording apparatus has the function of correcting the timing shift of the write strategy signal caused by the change in the operating environment of the digital signal processing circuit including the write strategy generating circuit, the laser drive circuit for driving the laser at the time of recording and the flexible printed board for electrical connection between the digital signal processing circuit and the laser drive circuit. Upon determination that the timing shift correction is required, the timing shift is reduced by operating the timing shift correcting function.

1 . A recording signal generating apparatus for generating and outputting a laser light emission control signal to modulate a laser beam used for an optical disk recording apparatus capable of recording information by radiation of a modulated laser beam on an optical disk,
 wherein the recording signal generating apparatus includes a mode control means for switching between the normal operation mode for normal laser light emission and the timing shift correction mode for detecting and correcting the timing shift of the laser light emission control signal,   wherein, in the timing shift correction mode, the recording signal generating apparatus outputs timing shift detection signals from at least two signal output terminals to output a laser light emission control signal, the timing shift detection signals changing their levels at substantially the same time.