Patent ID: 6954410

Claim:
An information recording and reproducing apparatus comprising: a laser driving waveform generator comprising: a laser drive component to drive a laser to selectively effect writing and reading of an information recording medium; and a waveform generator configured to provide a waveform to the laser drive component based on recording data, a synchronizing clock, and an operational setting; a control processing component comprising: a position detector to produce position information indicative of a position of the laser relative to the information recording medium; a plurality of setting registers, each storing content that can be transmitted to the waveform generator, the operational setting being determined by the content of one of the setting registers; and control circuitry coupled to the position detector to detect a predetermined position of the laser, the control circuitry configured to transmit the content of one of the setting registers to the laser driving waveform generator based on the position information, thereby determining the operational setting, wherein the waveform generator comprises a plurality of second registers, wherein the content of one of the setting registers comprises address information indicative of one of the second registers and data information to be stored in one of the second registers.