Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1977-04-04
1980-03-18
Curtis, Marshall M.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340756, 340789, 340 52F, G06F 314
Patent
active
041941993
ABSTRACT:
A display apparatus for displaying a plurality of physical parameters has a plurality of electrically-operable display regions which are to be operated in accordance with respective physical parameters. The display regions each comprise a plurality of display sections disposed in spaced array, an electrode which is common to all display sections in that display region, and a plurality of individual electrodes associated with individual and respective ones of the display sections in that display region. The electrodes of the said plurality of individual electrodes associated with one display region are coupled to respective ones of the said plurality of individual electrodes associated with another display region to form respective groups of electrodes. The display apparatus includes electric circuit means for operating the display regions in accordance with the values of the respective physical parameters, the circuit means being arranged sequentially to energize the said groups of electrodes and simultaneously to energize the said common electrodes in accordance with the values of the respective physical parameters.
REFERENCES:
patent: 3898642 (1975-08-01), Dorey et al.
patent: 3914758 (1975-10-01), Ingle
patent: 3918041 (1975-11-01), Mao
patent: 3934241 (1976-01-01), Weigert
patent: 3950743 (1976-04-01), Hatano et al.
patent: 3987617 (1976-10-01), Slob
Shepherd Brian
Thomas Richard N.
Curtis Marshall M.
Smiths Industries Limited
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