Electron beam suppression circuit for a television receiver

Details Electron beam suppression circuit for a television receiver Electron beam suppression circuit for a television receiver

1982-10-14

1984-12-11

Martin, John C.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358242, 315381, H04N 530

Patent

active

044881819

ABSTRACT:
The picture tube of a television receiver includes, inter alia, a plurality of electrodes to develop and accelerate an electron beam, and a phosphor screen on which the electron beam impinges. A deflection generator is coupled to a deflection winding for generating scanning current to produce a sweep of the electron beam across the phosphor screen. A remote control circuit develops an on/off command signal for switching the television receiver between normal run and standby modes of operation. A first switch is responsive to the command signal and disables normal generation of the scanning current upon the occurrence of the off-state of the command signal to inhibit normal sweep of the electron beam. A second switch, also responsive to the command signal, applies to one of the electrodes of the picture tube, such as the grid electrode, a blocking potential upon the occurrence of the off-state of the command signal to suppress generation of the electron beam prior to the disablement of scanning current generation.

REFERENCES:
patent: 2913621 (1959-11-01), Luther et al.
patent: 2940004 (1960-06-01), Bonner
patent: 3407330 (1968-10-01), Wilmarth
patent: 3944880 (1976-03-01), Harao et al.
patent: 4056758 (1977-11-01), Schaas
patent: 4218720 (1980-08-01), Kam et al.
patent: 4261006 (1981-04-01), Weintraub et al.
patent: 4282460 (1981-08-01), Luz et al.
patent: 4340910 (1982-07-01), Valdes
patent: 4390817 (1983-06-01), Johnson
Funktechnik, vol. 30, No. 19/1975, pp. 600-611, entitled, "A New Ultrasonic Remote Control for Color Television Receivers".

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