Density control method and device in display device

Details Density control method and device in display device Density control method and device in display device

1994-12-22

1996-05-07

Hjerpe, Richard

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

359 86, G09G 336

Patent

active

055150748

ABSTRACT:
A density control device including a control section connected to a display device, for controlling a display density in a screen of the display device; a main memory connected to the control section for storing an updated density data for the screen; a data memory connected to the control section and preliminarily storing proper density data corresponding to temperatures; a temperature sensor connected to the data memory for detecting an environmental temperature of the display device during its use; and a data input-output device for performing input/output of density data to/from the main memory. When a power supply of the display device is turned on, the control section controls the display density in the screen according to either the updated density data stored in the main memory or the density data stored in the data memory corresponding to the environmental temperature detected by the temperature sensor, thus setting a desired display density. Accordingly, the display density in the screen can be automatically adjusted to a desired density.

REFERENCES:
patent: 4687956 (1987-08-01), Itoh et al.
patent: 4825201 (1989-04-01), Watanabe et al.
patent: 4888599 (1989-12-01), Harwood
patent: 5024982 (1991-07-01), Nash
patent: 5088806 (1992-02-01), McCartney et al.

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