Circuit for modifying the if response of a television receiver

Details Circuit for modifying the if response of a television receiver Circuit for modifying the if response of a television receiver

H - Electricity

04

N

350/94

H04N 5/44 (2006.01) H04N 5/21 (2006.01)

Patent

CA 1139430

CIRCUIT FOR MODIFYING THE IF RESPONSE OF A TELEVISION RECEIVER ABSTRACT OF THE DISCLOSURE A "walking circuit" for modifying the IF frequency response of a television receiver is disclosed. The walk- ing circuit includes an amplifier having a pair of select- able gain-degeneration impedances, one such impedance pro- viding the amplifier with a wide band frequency response and the other providing the amplifier with a frequency sensitive response whose peak is centered at the IF fre- quency of the picture carrier. A current-steering circuit, responsive to the level of the signal received by the receiver, selects the wide band degeneration impedance by steering current through it when high level signals are received so that the amplifier does not modify the IF frequency response. When low level signals are received, current is steered through the frequency sensitive degeneration impedance for modifying the IF frequency response such that maximum gain occurs at or near the IF frequency of the picture carrier.

356714

Affiliated with

Also associated with

Rating

Circuit for modifying the if response of a television receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit for modifying the if response of a television receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for modifying the if response of a television receiver will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1105222