Sampled data filtering system, including a crossbar switch matri

Details Sampled data filtering system, including a crossbar switch matri Sampled data filtering system, including a crossbar switch matri

1986-10-16

1988-02-23

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358905, 364724, 455307, H04N 5213

Patent

active

047274247

ABSTRACT:
A sampled data filter used in a television automatic ghost cancellation system employs a single chain of cascaded delay elements and a crossbar switch matrix to implement the several different delayed sequences of samples that are used by the system to cancel several ghost signals. The rows of switch elements in the crossbar switch matrix are coupled to the individual delay elements, and the columns of the matrix are coupled to sample scaling circuitry. The scaled samples are summed to develop a psuedo-ghost signal which is combined with the input signal to cancel the ghost signal components.

REFERENCES:
patent: 4127874 (1978-11-01), Iwasawa
patent: 4314277 (1982-02-01), Pritchard et al.
patent: 4344089 (1982-08-01), Utsunomiya et al.
patent: 4388693 (1983-06-01), Bajatana
patent: 4458267 (1984-07-01), Dolazza
patent: 4489342 (1984-12-01), Gollinger et al.
patent: 4542408 (1985-09-01), Lewis, Jr.
patent: 4584659 (1986-04-01), Stikvoort

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