Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1978-07-25
1980-10-07
Curtis, Marshall M.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340754, 340811, G06F 314
Patent
active
042271932
ABSTRACT:
A matrix display including an electro-optic display having a layer of display material contained between two spaced substrates carrying m X and n Y electrodes arranged in an array to provide an m x n element matrix. A first series of m different coded waveforms are applied one to each X electrodes simultaneously and a second series of coded waveforms are applied simultaneously to the Y electrode. This second series of waveforms has codes different from one another and from the first series of waveforms. Additionally each code in the second series is related both to the codes on the X electrodes and to the information required to be displayed at each element along its associated Y electrode. As a result selected elements receive an r.m.s. voltage below a display effect threshold while others receive an r.m.s. voltage above threshold to collectively display the required information. The codes may be two or more level codes. Two level codes, binary codes, may be pseudo random series or orderly binary codes. The electro optic display may be a liquid crystal or an electroluminescent display.
REFERENCES:
patent: 4079369 (1978-03-01), Fukumoto
patent: 4085352 (1978-04-01), Hilton
patent: 4087807 (1978-05-01), Miller
patent: 4109241 (1978-08-01), Shanks
patent: 4119367 (1978-10-01), Raynes et al.
patent: 4127848 (1978-11-01), Shanks
Curtis Marshall M.
National Research Development Corporation
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