Digital signal separation filters

H - Electricity – 03 – H

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328/0.6

H03H 17/02 (2006.01) H03H 17/06 (2006.01) H04N 9/64 (2006.01)

Patent

CA 1173916

RCA 77,211 Abstract of the Disclosure A digital filter is provided which produces two output signals exhibiting different output characteristics in response to an input signal. The digital filter includes delaying means comprising a shift register having a plurality of signal taps and a given time delay between its input and output. The delaying means also produces the input signal delayed by at least half the time delay of the shift register. The filter also includes signal coupling means, coupled to the taps of the shift register, for weighting signals passing through it. Circuitry is provided for producing a sum of tap-weighted signals, and is coupled to the signal coupling means and cooperates with the shift register. Two combining means are also included. The first produces a combination in one sense of the tap-weighted signal sum and the delayed input signal at one output. The other produces a combination in the other sense of the tap-weighted signal sum and the delayed input signal at the other output.

414902

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