Receiver adaptively operable for multiple signal transmission sy

Details Receiver adaptively operable for multiple signal transmission sy Receiver adaptively operable for multiple signal transmission sy

1993-06-14

1995-05-23

Chin, Stephen

Pulse or digital communications

Apparatus convertible to analog

375321, 375344, 455142, H04L 2700

Patent

active

054188156

ABSTRACT:
A receiver for selectively receiving high frequency signals from analog modulated signals and digital modulated signals. The receiver has an intermediate frequency signal circuit for selecting a desired channel of the high frequency signals and for frequency-converting the high frequency signal of the selected channel into an intermediate frequency signal, a demodulator for demodulating the intermediate frequency signal, which is adapted to be capable of demodulating modulated signals in a variety of modulation systems, the demodulator including at least a digital section, and a controller for controlling the demodulator to be able to discriminate between the analog modulated signals and the digital modulated signals, based on a demodulated signal output from the digital section of the demodulator and to be switched into a demodulation mode suited for modulation system of the selected channel of the high frequency signals.

REFERENCES:
patent: 4750214 (1988-06-01), Hart et al.
patent: 4852086 (1989-07-01), Eastmond et al.
patent: 4882725 (1989-11-01), Noda et al.
patent: 5063445 (1991-11-01), Nishizawa et al.
patent: 5072297 (1991-12-01), Kanazawa et al.
patent: 5163159 (1992-11-01), Rich et al.
patent: 5251232 (1993-10-01), Nonami

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