Blanking voltage generator for a cathode ray tube

Details Blanking voltage generator for a cathode ray tube Blanking voltage generator for a cathode ray tube

1979-03-16

1980-12-02

Richardson, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358165, 358243, H04N 916

Patent

active

042374790

ABSTRACT:
Apparatus is disclosed for generating a blanking voltage for electron guns in cathode ray tubes, as used, for example, in color television displays. Apparatus utilizes circuitry including a video voltage amplifier having a control input. A feedback loop, connected between the junction of the cathode and video voltage amplifier output at one terminal, and the control input at the other, modifies the blanking voltage in response to samples of the cathode current taken when the video signal is zero.

REFERENCES:
patent: 4014038 (1977-03-01), Hwang et al.

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