Display device having an expanded display range in a limited ana

Details Display device having an expanded display range in a limited ana Display device having an expanded display range in a limited ana

1997-05-19

1999-11-30

Chow, Dennis-Doon

Computer graphics processing and selective visual display system

Plural physical display element control system

345 31, G09G 300

Patent

active

059950684

ABSTRACT:
A display device to indicate positive and negative display values by increasing or decreasing a number of lit display elements to provide a display device that allows an expansion of the display range in the limited analog display area of a display section. The display device includes a first display element group that is lit to indicate display values; a second display element group located near the first display element group that is lit to indicate an origin corresponding to the display value; and a control device to control, lighting of a display value by the first display element according to a position of the origin.

REFERENCES:
patent: 4297018 (1981-10-01), Murakami et al.
patent: 4544254 (1985-10-01), Egawa et al.
patent: 4754296 (1988-06-01), Neely
patent: 5113217 (1992-05-01), Izumi et al.
patent: 5386300 (1995-01-01), Kitawaki
patent: 5682558 (1997-10-01), Kirigaya et al.
patent: 5745101 (1998-04-01), Yamamotto et al.

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