Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1983-09-09
1986-09-16
Richardson, Robert L.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358328, H04N 576, H04N 9493
Patent
active
046125850
ABSTRACT:
A chrominance signal recording and reproducing circuit for a video tape recorder in which a frequency-modulated luminance signal and a low-frequency converted chrominance signal are mixed to be recorded and reproduced. A sideband emphasis type dynamic emphasis circuit composed of a diode limiter circuitry and an LC trap circuitry is provided in a recording system for recording the chrominance signal, while a sideband deemphasis circuit composed of at least a diode limiter circuitry and an LC trap circuitry is provided in a chrominance signal reproducing system. A circuit configuration is adopted in which the functions of the emphasis circuit and the deemphasis circuit are exchangeably performed by a common circuit.
REFERENCES:
patent: 4303952 (1981-12-01), Yamamitsu et al.
patent: 4524380 (1985-06-01), Shibata et al.
Kuroyanagi Tomomitsu
Takase Osamu
Hitachi , Ltd.
Richardson Robert L.
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