Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1989-09-06
1991-05-07
Issing, Gregory C.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
315368, 315371, G09G 104, H01J 2970, H01J 2951
Patent
active
050139789
ABSTRACT:
A compensation arrangement for a display system that adaptively compensates the display parameters thereof for each pixel position to provide a precise display image that automatically adapts to the scan rate and aspect ratio of its sweep circuit. The sweep signals are sensed directly to define the actual instantaneous scan position. The sweep position is used to generate a compensation parameter for compensating the display signals. In a preferred embodiment, a lookup table is used to store compensation parameters, a compensation parameter is accessed from the table in response to the sweep signals, and the accessed compensation parameter is used to compensate the display signals.
REFERENCES:
patent: 4598234 (1986-07-01), McKibben
patent: 4687973 (1987-08-01), Holmes et al.
patent: 4799000 (1989-01-01), Close
Denson-Low Wanda K.
Hughes Aircraft Company
Issing Gregory C.
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