Laser diode driving apparatus using attenuated waveform

Details Laser diode driving apparatus using attenuated waveform Laser diode driving apparatus using attenuated waveform

1997-08-29

1999-09-21

Bovernick, Rodney

Coherent light generators

Particular component circuitry

Optical pumping

372 30, 372 33, 369115, 36518901, 36518907, G11B 7125

Patent

active

059563575

ABSTRACT:
A laser diode driving apparatus produces a simple write signal having an attenuated waveform to drive the laser diode. A laser diode emits laser light on an optical disk according to a write signal to record data thereon. A laser diode driver outputs a predetermined, plurality of write power values each being different from each other. A write control signal generator calculates widths of a kick pulse and a brake pulse corresponding to the pulse width of the received NRZI signal, and generates write control signals in a predetermined order for controlling write power values corresponding to the calculated widths of the kick pulse and the brake pulse. A write signal generator supplies a write signal to the laser diode using a plurality of the write power values according to the write control signals generated by the write control signal generator. Accordingly, a write domain can be made to be close to a distinct oval. Furthermore, distortion or swing of the reproduced signal can be minimized and a carrier-to-noise ratio can be improved. The laser diode driving apparatus can be easily constructed so that the cost of the set does not increase.

REFERENCES:
patent: 4945516 (1990-07-01), Kashiyama

Affiliated with

Also associated with

Rating

Laser diode driving apparatus using attenuated waveform does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Laser diode driving apparatus using attenuated waveform, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser diode driving apparatus using attenuated waveform will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-87221