Equalizer used for a VTR

Details Equalizer used for a VTR Equalizer used for a VTR

1996-05-23

1997-05-20

Tran, Thai Q.

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

386113, 360 65, H04N 591, H04N 700, G11B 5035

Patent

active

056319975

ABSTRACT:
A video signal is read from a magnetic tape, and amplified by a head amplifier. The video signal then passes separately through first and second BPFs, the BPFs having respective passband characteristics so as to be applied to a first adding circuit. A first coefficient circuit multiplies the output from the first BPF by a positive coefficient while a second coefficient circuit multiplies the output from the second BPF by a negative coefficient. A second adding circuit adds all three signals, namely, signals from the first adding circuit and from the first and second coefficient circuits, and outputs the added signal to a trap circuit. The frequency characteristic of the equalizer can be adjusted by changing the coefficients in the first and second coefficients circuits. A change of the coefficients does not affect the level of the carrier component of a luminance signal.

REFERENCES:
patent: 4459554 (1984-07-01), Mattisson
patent: 4484237 (1984-11-01), Muto
patent: 4635143 (1987-01-01), Suzuki et al.
patent: 4686561 (1987-08-01), Harwood et al.
patent: 4723175 (1988-02-01), Ichinoi et al.
patent: 4758903 (1988-07-01), Noguchi et al.
patent: 4786989 (1988-11-01), Okamura et al.
patent: 5105275 (1992-04-01), Iizuka et al.
patent: 5121266 (1992-06-01), Ito et al.
patent: 5124850 (1992-06-01), Kizu
patent: 5258879 (1993-11-01), Shimotashiro et al.
patent: 5287385 (1994-02-01), Sugawara et al.
patent: 5311306 (1994-05-01), Tanaka et al.
patent: 5349444 (1994-09-01), Amano et al.
patent: 5519676 (1996-05-01), Kitahara

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