Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1978-09-11
1980-10-28
Trafton, David L.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340756, 340811, G09G 314
Patent
active
042310334
ABSTRACT:
Logic level shifting circuits are described in which integrated circuits process binary logic input signals of logic levels different from the input logic levels of said integrated circuits but within the ranges of tolerance and safety of said integrated circuits. Such logic level shifting techniques are used as a simple but effective method to cut down power consumption in luminous displays using seven-segment LED's or the like which may be placed in series as a result of logic level shifting between the respective counters and decoders which control them.
REFERENCES:
patent: 3717867 (1973-02-01), Rosenzweig
patent: 3969672 (1976-07-01), Wallander et al.
patent: 4009566 (1977-03-01), Ho
patent: 4017847 (1977-04-01), Burford et al.
patent: 4085352 (1978-04-01), Hilton
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