Optical disk drive having a low-emission high-bandwidth laser dr

Details Optical disk drive having a low-emission high-bandwidth laser dr Optical disk drive having a low-emission high-bandwidth laser dr

1992-07-17

1994-04-26

Dzierzynski, Paul M.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369116, 372 29, 372 31, 372 28, 372 25, G11B 712

Patent

active

053073371

ABSTRACT:
An optical recording system having a laser for generating a light beam to write data to and read data from a storage medium, an RF modulator for modulating the laser to improve its stability, and an apparatus for driving the laser. The apparatus is comprised of a transistor coupled to the laser for supplying current to the laser. An amplifier is implemented to drive the base of the transistor according to a microprocessor. Thereby, the microprocessor effectively controls the power level of the laser. The transistor and the RF modulator are enclosed within shielding to contain the RF energy being generated by the modulator. In addition, the collector-base separation of the transistor reduces the RF energy being transmitted through the line driving the base of the transistor.

REFERENCES:
patent: 3798548 (1974-03-01), White et al.
patent: 4238679 (1980-12-01), Macmillan et al.
patent: 4635265 (1987-01-01), O'Harra
patent: 4675872 (1987-06-01), Popek et al.
patent: 4817102 (1989-03-01), Maurer et al.
patent: 4924470 (1990-05-01), Ries
patent: 4924473 (1990-05-01), Burgyan et al.
patent: 4974229 (1990-11-01), Egawa
patent: 5036519 (1991-07-01), Ema et al.

Affiliated with

Also associated with

Rating

Optical disk drive having a low-emission high-bandwidth laser dr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical disk drive having a low-emission high-bandwidth laser dr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disk drive having a low-emission high-bandwidth laser dr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1717327