Multicolor display system

Details Multicolor display system Multicolor display system

1989-11-06

1992-07-28

Weldon, Ulysses

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

360703, 360762, 360782, G09G 128

Patent

active

051343878

ABSTRACT:
A multicolor display system comprised of a matrix of light-emitting diodes (LEDs). Each display dot or pixel is comprised of one red LED and one green LED. The display data is stored in a selected one or more discrete locations of a random access memory as a bit map, depending upon the desired display color. Each memory location is associated with a particular primary color "field" (e.g., red or green). The bit map indicates which of the LEDs is ON and which is OFF in order to display selected data. The data associated with each field is displayed sequentially during a display cycle so that the relative mixture of red fields and green fields determines the resulting display color. The duty cycle of each LED is therefore controlled in software, which reduces the need for complex hardware such as voltage drivers and counters needed in prior art multicolor display systems.

REFERENCES:
patent: 3740570 (1973-06-01), Kaelin et al.
patent: 3909788 (1975-09-01), Kaelin et al.
patent: 4367464 (1983-01-01), Kurahashi et al.
patent: 4686575 (1987-08-01), Shimada et al.
patent: 4687340 (1987-08-01), Havel
patent: 4707141 (1987-11-01), Havel
patent: 4755807 (1988-07-01), Guennou
patent: 4794383 (1988-12-01), Havel
patent: 4845481 (1989-07-01), Havel
patent: 4967373 (1990-10-01), Ginsburg

Affiliated with

Also associated with

Rating

Multicolor display system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multicolor display system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multicolor display system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1689197