Tuner

Details Tuner Tuner

2008-03-11

2008-03-11

Phu, Sanh D. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

C455S142000, C455S176100, C455S180100, C455S190100

Reexamination Certificate

active

10410915

ABSTRACT:
A tuner is provided for selecting, independently of each other, a plurality of radio frequency channels for simultaneous reception. The tuner comprises a plurality of up converters whose outputs are combined in a combiner. Each up converter operates independently of the other up converters to select a channel from a multi channel input signal and to convert the selected channel to a first high intermediate frequency. The intermediate frequencies of the up converters are different from each other. The common signal from the combiner is supplied to a down converter which converts the signals at different high intermediate frequencies to signals at different lower intermediate frequencies. Thus, the signals from the combiner and from the down converter carry all of the selected channels at different intermediate frequencies. The signal from the down converter is subsequently processed to separate the selected channels and demodulate them. This may be achieved by a common demodulation circuit, which processes channels simultaneously.

REFERENCES:
patent: 5784413 (1998-07-01), Chen
patent: 6556807 (2003-04-01), Horie et al.
patent: 6920185 (2005-07-01), Hinson
patent: 2003/0054850 (2003-03-01), Masseroni et al.

Affiliated with

Also associated with

Rating

Tuner does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3926951