Adaptive television ghost cancellation system including filter c

Details Adaptive television ghost cancellation system including filter c Adaptive television ghost cancellation system including filter c

1988-02-08

1989-09-05

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 36, 358905, H04N 521, H04N 514

Patent

active

048644030

ABSTRACT:
A television signal ghost cancellation system is described in which a microprocessor is used to develop a mathematical model of the transmission channel which produced a ghosted video signal. The microprocessor determines the coefficient values and delay values for a digital IIR filter from this model. The system uses the IIR filter to cancel ghost signals from the ghosted video signal. The IIR filter includes circuitry for interpolating between successively delayed sample values to cancel ghost signals which are delayed by a non-integer number of sample periods.

REFERENCES:
patent: 4127874 (1978-11-01), Iwasawa et al.
patent: 4285006 (1981-08-01), Kurahashi et al.
patent: 4328772 (1980-12-01), von Gierke et al.
patent: 4359778 (1982-11-01), Lee
patent: 4393397 (1983-07-01), Holmes
patent: 4404600 (1983-09-01), Murakani
patent: 4413282 (1983-11-01), Wargo
patent: 4458269 (1984-07-01), Schroeder
patent: 4542408 (1985-09-01), Lewis, Jr.
patent: 4564862 (1986-01-01), Cohen
patent: 4583120 (1986-04-01), Murakami et al.
patent: 4694414 (1987-09-01), Christopher
patent: 4698680 (1987-10-01), Lewis, Jr. et al.
patent: 4703357 (1987-10-01), Ng et al.
patent: 4727424 (1988-02-01), Chao
Ciciora, W. et al., "A Tutorial on Ghost Cancelling in Television Systems", IEEE Transactions on Consumer Electronics, Feb. 1979, pp. 9-44.
H. Thedick, "Adaptive Multipath Equalization for T.V. Broadcasting", IEEE Transactions on Consumer Electronics, May 1977, pp. 175-181.
Murakami, J. et al., "Ghost Clean System", IEEE Transactions on Consumer Electronics, Aug. 1983, pp. 129-133.
Goyal, S. et al., "Performance Evaluations of Selected Automatic Deghosting Systems for Television", IEEE Transactions on Consumer Electronics, Feb. 1980, pp. 100-120.

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