Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1978-10-04
1980-04-22
Cook, Daryl W.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 4, 360 37, H04N 579, H04N 578
Patent
active
041997794
ABSTRACT:
A VIR-signal processing circuitry for a VTR (video tape recorder) having a comb filter for obtaining a correct operation of the VIR circuit incorporated in a television receivers, comprises a comb filter stopping means for preventing the VITS (vertical interval test signal) on the 18th line from polluting the VIRS (vertical interval reference signal), a phase transfer means for transferring the phase information of the transmitted VIRS to the reference subcarrier after elimination of the crosstalks by integrating the VIRS, an amplitude transfer means for transferring the amplitude information of the transmitted VIRS to the output signal of said phase transfer means after elimination of the crosstalks by integrating the VIRS, and a VIRS replacing means for replacing the transmitted VIRS by the newly developed chrominance reference using the output signal of said amplitude transfer means.
REFERENCES:
patent: Re29975 (1979-04-01), Ishigaki et al.
patent: 3918085 (1975-11-01), Numakura et al.
patent: 3996610 (1976-12-01), Kawamoto
patent: 4007484 (1977-02-01), Amari
patent: 4010490 (1977-03-01), Ota
patent: 4134126 (1979-01-01), Hirai
Kobayashi Masa-aki
Nagaoka Yoshitomi
Cook Daryl W.
Matsushita Electric - Industrial Co., Ltd.
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