Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1978-07-28
1980-01-29
Trafton, David L.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340365C, G08B 536
Patent
active
041863925
ABSTRACT:
The disclosure is of a display device having a face plate for displaying information and carrying an electrode assembly which is coupled to the face plate of the display device. The electrode assembly includes an insulating support sheet having an inner surface and an outer surface, on each of which an array of rows and columns of conductive areas is formed. On the inner surface, the rows of conductive areas are electrically connected together to output contact pads at a side edge of the sheet, and, on the outer surface, the columns of conductive areas are electrically connected together to output contact pads along the lower edge of the sheet. Each outer conductive area overlies and is capacitively coupled to an inner conductive area. A column conductor which extends from a contact pad at an edge of the outer surface of the sheet is intimately capacitively coupled to each column of outer conductive areas.
The system of the invention includes a microprocessor which drives the columns of conductive areas sequentially and senses the energization of one of these areas to provide display information on the display device.
REFERENCES:
patent: 3482241 (1969-12-01), Johnson
patent: 3757322 (1973-09-01), Barkan et al.
patent: 3778817 (1973-12-01), Silverberg
patent: 3921166 (1975-11-01), Volpe
patent: 4017848 (1977-04-01), Tannas
patent: 4027306 (1977-05-01), Hackmeister
patent: 4037225 (1977-07-01), Duvall
patent: 4078257 (1978-03-01), Bagley
patent: 4110749 (1978-08-01), Janko et al.
Burroughs Corporation
Feeney, Jr. Edward J.
Green Robert A.
Peterson Kevin R.
Trafton David L.
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