Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1995-04-24
1996-01-02
Kuntz, Curtis
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
455 72, 381 2, G10L 302, G10L 900
Patent
active
054816432
ABSTRACT:
A transmitter for transmitting at least two main signal components (L,R) includes a first data compression circuit (BRR1) for performing a data compression of a first of the main signal components, a data expansion circuit (DEQ) for performing a data expansion of the compressed signal component so as to obtain a replica of the first main signal component, and a matrixing circuit for combining the second main signal component with the replica of the first main signal component so as to obtain a combined signal (M'). A second data compression circuit (BRR2) performs a data compression of the combined signal (M') in response to a masking control signal. The output signals of the first and second data compression circuits are combined as a composite signal for transmission via a transmission medium, for example a record carrier. The invention also provide a receiver for such a transmitted composite signal. The transmitter may be adapted to provide for transmission of three individual signal components (L,R,C).
REFERENCES:
patent: 5185800 (1993-02-01), Mahieux
patent: 5241689 (1993-08-01), Schwed et al.
Christensen Karl-Ejner
Sorensen Erik
Ten Kate Warner R. T.
Eason Leroy
Kuntz Curtis
Lee Ping W.
U.S. Philips Corporation
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