Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1995-07-21
1998-04-07
Hofsass, Jeffery
Communications: electrical
Condition responsive indicating system
Specific condition
340641, 36455101, 2503361, 250369, G08B 2100
Patent
active
057369305
ABSTRACT:
An apparatus for warning a user that a radiation source is likely to fail in the near future comprises a radiation source, having a radiance; a detector, responsive to the radiance; a memory, having a radiance measurement unit for collecting radiance data and a failure prediction unit for determining that the radiation source end of life is near; and a processing unit, coupled to the detector and the memory. A method for warning a user that a radiation source is likely to fail in the near future comprises the steps of collecting radiance data from the radiation source; determining if the radiation source's end of life is near; and warning a user if the radiation source's end of life is near.
REFERENCES:
patent: 4172226 (1979-10-01), Rubin
patent: 4217497 (1980-08-01), Daniels et al.
patent: 4642463 (1987-02-01), Thoms
patent: 4862004 (1989-08-01), Koike et al.
Apple Computer Inc.
Hofsass Jeffery
Woods Davetta
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