Communications: electrical – Selective – Having indication or alarm
Patent
1978-03-30
1980-10-07
Yusko, Donald J.
Communications: electrical
Selective
Having indication or alarm
340321, G08B 538, B60Q 126
Patent
active
042271746
ABSTRACT:
An automotive lamp flasher provides a visibly irregular series of flashes to indicate the existence of a distress situation. The flasher also provides a regular series of flashes as is done by existing flashers. Circuitry is provided to generate a nonuniform pulse train and repeatedly apply this pulse train to a lamp activation circuit. Broadly, a multiplexer with a plurality of input terminals is used, each having a logic level thereon. The multiplexer is sequentially stepped to provide an output representative of the sequence of logic levels on the input terminals. Preferred stepping means includes a timer for supplying a continuous sequence of uniformly spaced pulses, and a scaler responsive to these pulses for supplying a sequence of binary codes to the multiplexer.
REFERENCES:
patent: B222188 (1975-01-01), Cauglin et al.
patent: 3027491 (1962-03-01), Seidler
patent: 3226707 (1965-12-01), Newman et al.
patent: 3810150 (1974-05-01), Jacobs
patent: 3965468 (1976-06-01), Bronson
patent: 4105996 (1978-08-01), Shimizu
patent: 4124842 (1978-11-01), Bachelor
Ahumada Gregg D.
Belcher Robert A.
Belcher Robert A.
Yusko Donald J.
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