Video receiver with DC offset cancellation

Details Video receiver with DC offset cancellation Video receiver with DC offset cancellation

2008-03-06

2011-12-13

Lee, Michael (Department: 2422)

Television

Receiver circuitry

C348S726000

Reexamination Certificate

active

08077262

ABSTRACT:
An analog video receiver implemented in an integrated circuit device. The analog video receiver includes a mixing circuit to mix an analog video signal with a sinusoid to generate a frequency-shifted analog video signal, and an offset cancellation circuit to obtain a sample of the frequency-shifted analog video signal during a first time interval and, based on the sample, generate an offset cancellation signal that, when summed with the frequency-shifted analog video signal, reduces a substantially time-invariant offset in the frequency-shifted analog video signal.

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