Method and apparatus for providing hot plugging protection for l

Details Method and apparatus for providing hot plugging protection for l Method and apparatus for providing hot plugging protection for l

1998-03-25

2000-07-18

Scott, Jr., Leon

Coherent light generators

Particular component circuitry

Optical pumping

H01S 300

Patent

active

060917504

ABSTRACT:
A method and apparatus for providing hot plugging protection for a laser optoelectronic device in a laser driver and fault detection circuit are provided. The power supply voltage is compared with a defined threshold potential utilizing a power on reset (POR) circuit. Responsive to detecting a power supply voltage potential below the defined threshold potential, an output control signal is generated. A current interrupt laser driver control signal is generated responsive to the output control signal to interrupt the laser driver current. A clear fault control signal is simultaneously generated responsive to the output control signal.

REFERENCES:
patent: 4262366 (1981-04-01), Eumurian
patent: 4685097 (1987-08-01), van der Put
patent: 4713819 (1987-12-01), Yoshikawa
patent: 5296695 (1994-03-01), Bardos et al.
patent: 5666045 (1997-09-01), Grodevant
IBM Technical Disclosure Bulletin, vol. 33, No. 3B, Aug. 1990, pp. 90 and 91, and entitled Laser Fault Detection.

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