Back-porch clamp

Television – Image signal processing circuitry specific to television – Dc insertion

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C348S689000, C348S691000, C348S696000, C348S697000, C348S698000

Reexamination Certificate

active

07126645

ABSTRACT:
The invention teaches a method, means and apparatus for clamping a back porch interval of a video signal including clamping a sync-tip level of said video signal to a variable reference voltage, comparing a back-porch voltage level of the sync-tip clamped video signal to a predetermined reference voltage, generating an error signal representative of the difference between the back-porch voltage level and the predetermined reference voltage, and adjusting the variable reference voltage in response to the error signal such that the error signal is minimized.

REFERENCES:
patent: 5798802 (1998-08-01), Elmis et al.
patent: 5841488 (1998-11-01), Rumreich
patent: 6028642 (2000-02-01), Rinaldi et al.
patent: 6154256 (2000-11-01), Bruins
patent: 6195133 (2001-02-01), Bae
patent: 6529248 (2003-03-01), Tsyrganovich
patent: 6580465 (2003-06-01), Sato
patent: 6587139 (2003-07-01), Hirao
patent: 6967691 (2005-11-01), Keen
patent: 4215668 (1993-11-01), None
patent: 0944246 (1999-09-01), None
Copy of Search Report dated May 31, 2002.

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

Back-porch clamp does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Back-porch clamp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Back-porch clamp will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3643358

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