Information recording and reproducing apparatus for updating...

Details Information recording and reproducing apparatus for updating... Information recording and reproducing apparatus for updating...

2005-10-11

2005-10-11

Patel, Gautam R. (Department: 2655)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Control of information signal processing channel

C369S047190, C369S047510

Reexamination Certificate

active

06954410

ABSTRACT:
A laser waveform generation function is provided in a laser driving waveform generator2near a laser3. A recording clock generator9is included in the laser driving waveform generator2to generate a clock with a frequency higher than that of a synchronizing clock202. This allows a recording laser current (waveform) to be generated without transmission of a high frequency signal from the modulator6.Further, because the synchronizing clock202is stopped upon a reproduction operation including reproduction operation in an ID unit, undesired effects on a reproduction operation such as ID reproduction can be reduced. Because the response speed of the recording clock generator9can be changed, a high precision clock can be generated. Thus, a high-precision recording laser current (waveform) can be generated.

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