Apparatus for controlling monitor photo diode in optical...

Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal gain processing

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C369S059110, C369S059130

Reexamination Certificate

active

10687994

ABSTRACT:
An apparatus for controlling a monitor photo diode (PD) of an optical pickup system monitors an optical power signal output for writing data on or reading data from a disk. The apparatus includes a comparator which compares a voltage signal corresponding to the optical power signal output from the LD with a predetermined reference voltage signal, and a gain selector which selectively issues a gain output from the comparator depending on the type of the optical power signal output from the LD.

REFERENCES:
patent: 5197059 (1993-03-01), Minami et al.
patent: 5742566 (1998-04-01), Imai
patent: 7057990 (2006-06-01), Seo
patent: 7068933 (2006-06-01), Seong et al.
patent: 2002/0101808 (2002-08-01), Seo
patent: 8249701 (1996-09-01), None
patent: 1020010077597 (2002-08-01), None
Korean Office Action.

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

Apparatus for controlling monitor photo diode in optical... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for controlling monitor photo diode in optical..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for controlling monitor photo diode in optical... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3935471

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