Front-end for digital video receiver and method for...

Pulse or digital communications – Receivers – Automatic gain control

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C455S234100, C455S240100, C455S245100, C327S306000, C327S332000

Reexamination Certificate

active

07978794

ABSTRACT:
A method for automatic gain control of a front-end for a digital video receiver is provided. The method includes the following steps. First, a radio frequency signal is received and converted to an intermediate frequency signal. Then, the IF signal is amplified according to a gain. Next, the amplified IF signal is demodulated into a base-band signal, and the base-band signal is encoded into a transport stream. After that, a DC level of a pulse width modulation signal is controlled by at least one variable resistor to adjust the gain, the PWM signal being related to a setting of the gain. Afterwards, a BER measurement at each potential setting of the gain and the variable resistor under one or more power levels of the RF signal is read, and an optimum setting of the gain and the variable resistor is selected according to the BER measurements.

REFERENCES:
patent: 6160443 (2000-12-01), Maalej et al.
patent: 6369857 (2002-04-01), Balaban et al.
patent: 6459458 (2002-10-01), Balaban
patent: 6728524 (2004-04-01), Yamanaka et al.
patent: 6965656 (2005-11-01), Koizumi
patent: 7054395 (2006-05-01), Azakami et al.
patent: 7715886 (2010-05-01), Kanno et al.
patent: 530491 (2003-05-01), None

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

Front-end for digital video receiver and method for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Front-end for digital video receiver and method for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Front-end for digital video receiver and method for... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2655276

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