Light emitting element driving circuit, communication device...

Coherent light generators – Particular beam control device – Modulation

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C372S034000, C372S029011, C372S038070, C372S038020, C315S291000, C315S224000, C315S169300

Reexamination Certificate

active

07154921

ABSTRACT:
A light emitting element driving circuit drives a surface-emitting element, and the light emitting element driving circuit is equipped with a bias current driving circuit that supplies a generally constant bias current to the surface-emitting element, a modulation current driving circuit that supplies to the surface-emitting element a modulation current superimposed on the bias current, and a temperature detection circuit that detects the temperature of the surface-emitting element, wherein the modulation current driving circuit decreases the current amount of the modulation current, when the temperature detected rises. The bias current driving circuit may preferably supply the bias current to the surface-emitting element through a coil, and the modulation current driving circuit may preferably supply the modulation current to the surface-emitting element through a capacitor.

REFERENCES:
patent: 5907569 (1999-05-01), Glance et al.
patent: 6272160 (2001-08-01), Stronczer
patent: 6532245 (2003-03-01), Paschal et al.
patent: 6822987 (2004-11-01), Diaz et al.
patent: 6922423 (2005-07-01), Thornton
patent: 6975658 (2005-12-01), Roach
patent: 7049759 (2006-05-01), Roach
patent: A 11-330609 (1999-11-01), None
patent: A 2002-261389 (2002-09-01), None
“3.0V to 5.5V, 2-5Gbps VCSEL and Laser Driver,” Maxim Integrated Products, Searched on May 11, 2004, Internet <URL: http://pdfserv.maxim.ic.com/en/ds/MAX3996.pdf,> pp. 1-16.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Light emitting element driving circuit, communication device... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Light emitting element driving circuit, communication device..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light emitting element driving circuit, communication device... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3662667

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.