Patent ID: 7680008

Claim:
A recording apparatus for an optical disk drive, comprising: a driver being capable of controlling a rotation speed of the optical disk drive; a temperature sensor connected to an optical pickup head of the optical disk drive for generating a temperature signal of the optical disk drive; a servo signal generation unit for generating a level of a focusing error signal, a level of a tracking error signal and a wobble synchronization pattern loss; a microprocessor, comprising: a detection mechanism for detecting an error rate of a demodulated wobble signal and a frequency of buffer under-run occurrence; a recording termination control mechanism for ceasing recording if an output of the detection mechanism or the servo signal generation unit exceeds a preset threshold value and recording is underway; a recording speed adjustment mechanism for setting parameters with a lower rotation speed if the output of the detection mechanism or the servo signal generation unit exceeds a preset threshold value and recording is ceased by the recording termination control mechanism; and a maximal write power estimation mechanism for checking a maximum value of write power during a recoding according to a result of optimal power calibration (OPC); and a digital signal processor for converting the parameters with the lower rotation speed into a driving signal that instructs the driver to decrease the rotation speed of the optical disk drive.