Method and apparatus for controlling the display of a video imag

Details Method and apparatus for controlling the display of a video imag Method and apparatus for controlling the display of a video imag

1997-07-08

1999-12-21

Westin, Edward P.

Television

Synchronization

Automatic phase or frequency control

348521, 348546, 348547, 345213, 345 10, 315370, 315398, H04N 512, G09G 100

Patent

active

060056347

ABSTRACT:
A control circuit (100) which receives horizontal synchronising pulses (265) and generates a horizontal drive output signal (455) for a cathode ray tube (CRT) display. The horizontal control circuit (100) generates two ramp signals. A first ramp signal (410) for horizontal position adjustment of an image on the CRT display, and a second ramp signal (440) for propagation delay compensation of a deflection circuit (155) coupled to the CRT display. The control circuit (100) also provides digital of control of the duty cycle of the horizontal drive signal (455).

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patent: 4351001 (1982-09-01), McGinn et al.
patent: 4802009 (1989-01-01), Hartmeier
patent: 5117290 (1992-05-01), Heerkens
patent: 5121086 (1992-06-01), Srivastava
patent: 5179321 (1993-01-01), Smith et al.
patent: 5619276 (1997-04-01), Christopher et al.
patent: 5760839 (1998-06-01), Sumiyoshi

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