Digital deghosting system

Details Digital deghosting system Digital deghosting system

1983-08-31

1985-09-17

Masinick, Michael A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358905, H04N 521

Patent

active

045424080

ABSTRACT:
A deghosting system incorporated in a digital television signal processing system includes a number of channels for producing digital samples of psuedo ghost signals for cancelling digital samples of respective ghost components of a contaminated video signal. Each channel includes a random access memory into which digital video samples are read and later read out of at a time corresponding to the delay between the respective ghost component and the main (desired) component of the ghost contaminated video signal. The resulting delayed digital samples are multiplied with an appropriate coefficient to generate the digital samples of the psuedo ghost signal.

REFERENCES:
patent: 4025772 (1977-05-01), Constant
patent: 4053932 (1977-10-01), Yamaguti et al.
patent: 4314277 (1982-02-01), Pritchard et al.
patent: 4435823 (1984-03-01), Davis et al.
An Article Entitled "A Digitalized Automatic Ghost Canceller" by J. Murakami, K. Ohzeki and K. Ogi Appearing on pp. 555-561 of the "IEEE Transactions on Consumer Electronics", vol. CE-25, Aug. 1979.

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