Ghost cancelling system that cancels ghosts from video signals w

Details Ghost cancelling system that cancels ghosts from video signals w Ghost cancelling system that cancels ghosts from video signals w

1990-07-16

1991-11-12

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358167, 358 36, 358 37, H04N 964, H04N 514, H04N 5208, H04N 5213

Patent

active

050652419

ABSTRACT:
A ghost cancelling system which distinguishes whether ghosts have been substantially cancelled from a video signal for finding an equilibrium condition. The system calculates a specified value which depends on the noise signal contained in the video signal. The tap coefficients which are equal or greater than the specified value are then detected, and the system corrects only those tap coefficients after the equilibrium condition exists.

REFERENCES:
patent: 4476491 (1984-10-01), Murata et al.
patent: 4583120 (1986-04-01), Murakami et al.
patent: 4896213 (1990-01-01), Kobo et al.
patent: 4897725 (1990-01-01), Tanaka et al.
Makino et al., "A Novel Automatic Ghost Canceller", IEEE Transaction on Consumer Electronics, vol. CE-26, No. 3, Aug. 1980, pp. 629-637.

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