Intermediate-frequency circuit having flat group delay...

Details Intermediate-frequency circuit having flat group delay... Intermediate-frequency circuit having flat group delay...

2007-04-24

2007-04-24

Natnael, Paulos (Department: 2622)

Television

Receiver circuitry

Tuning

C455S197200

Reexamination Certificate

active

10833421

ABSTRACT:
An intermediate-frequency circuit includes a mixer for converting a received TV signal to an intermediate-frequency signal; an intermediate-frequency amplifier for amplifying the intermediate-frequency signal; an intermediate-frequency tuning circuit for tuning to the intermediate-frequency signal, the intermediate-frequency tuning circuit being interposed between the mixer and the intermediate-frequency amplifier; and a trap circuit interposed between the mixer and the intermediate-frequency tuning circuit or between the intermediate-frequency tuning circuit and the intermediate-frequency amplifier, wherein a trap frequency of the trap circuit can be changed in a region outside a video intermediate frequency.

REFERENCES:
patent: 3590143 (1971-06-01), Narita et al.
patent: 4263619 (1981-04-01), Theriault
patent: 4795990 (1989-01-01), Ishikawa et al.
patent: 6342928 (2002-01-01), Ohira
patent: 6795128 (2004-09-01), Yamamoto
patent: 6876402 (2005-04-01), Sasaki
patent: 7030937 (2006-04-01), Yamamoto
patent: 2002-281401 (2002-09-01), None

Affiliated with

Also associated with

Rating

Intermediate-frequency circuit having flat group delay... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Intermediate-frequency circuit having flat group delay..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intermediate-frequency circuit having flat group delay... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3759523