Television receiver being driven by either analog broadcasting s

Details Television receiver being driven by either analog broadcasting s Television receiver being driven by either analog broadcasting s

1995-10-30

1997-06-17

Burgess, Glenton B.

Television

Receiver circuitry

Demodulator

348731, 348 6, 455 31, 455 61, 371 221, 371 681, H04N 100

Patent

active

056402139

ABSTRACT:
A television receiver having an input section for splitting a reception signal to a first signal and a second signal, first and second mixers for respectively receiving the split reception signals, a local oscillator for outputting first and second local oscillation signals, a 90.degree. phase shifter for providing the first local oscillation signal to another input of the first mixer after phase-shifting by 90.degree., a first output section for directly extracting outputs from the first and the second mixers, and a second output section for outputting a second output obtained by adding a direct output from the first mixer and the output from the second mixer which has passed through another 90.degree. phase shifter.

REFERENCES:
patent: 4573153 (1986-02-01), Nakamura et al.
patent: 4979230 (1990-12-01), Marz
patent: 5293633 (1994-03-01), Robbins

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