Vertical deflection waveform generating apparatus

Details Vertical deflection waveform generating apparatus Vertical deflection waveform generating apparatus

1994-01-12

1995-12-05

Issing, Gregory C.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315371, 315403, G09G 104, H01J 2970

Patent

active

054732239

ABSTRACT:
A vertical deflection waveform generating apparatus is provided to have a memory in which a function of a vertical deflection waveform is previously stored. The function is a function with an order of horizontal scanning lines in which linearity of a raster is corrected as a parameter. The vertical deflection waveform generating apparatus generates a vertical deflection waveform by a digital signal processing circuit substituting a scanning order of the next scanning line in the parameter of the function, and sequentially outputting vertical deflection voltage at each time of detection of a horizontal synchronizing signal. Further, in order to reduce raster moire, timing for generating the vertical deflection waveform is offset for each frame.

REFERENCES:
patent: 4870329 (1989-09-01), Ara
patent: 4933769 (1990-06-01), Maas
patent: 5294866 (1994-03-01), Miyazaki et al.
patent: 5298985 (1994-03-01), Tsujihara et al.
patent: 5325025 (1994-06-01), Gawell et al.

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