Satelite broadcast tuner capable of processing both QPSK modulat

Details Satelite broadcast tuner capable of processing both QPSK modulat Satelite broadcast tuner capable of processing both QPSK modulat

1996-11-27

1999-09-07

Flynn, Nathan

Telecommunications

Wireless distribution system

348725, H04N 546

Patent

active

059501120

ABSTRACT:
There is provided a low-cost satellite broadcast tuner capable of receiving and processing both a QPSK modulation signal and an FM signal while assuring simple connection of an LNB (low noise block) to the tuner. A single front-end section including an RF stage, a mixer, a local oscillator circuit, an IF stage, an AGC loop is used for both an FM detector and an I/Q quadrature detector, so that both the FM signal and the QPSK modulation signal are received and processed in the single front-end section. In the above case, power supplied to the FM detector for detecting the FM signal, and power supplied to a local oscillator circuit required for detecting the QPSK modulation signal is turned off when receiving the FM signal.

REFERENCES:
patent: 5463675 (1995-10-01), Hayashi et al.
patent: 5666170 (1997-09-01), Stewart

Affiliated with

Also associated with

Rating

Satelite broadcast tuner capable of processing both QPSK modulat does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Satelite broadcast tuner capable of processing both QPSK modulat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Satelite broadcast tuner capable of processing both QPSK modulat will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1814933