Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1999-07-06
2000-08-15
Wu, Daniel J.
Communications: electrical
Condition responsive indicating system
Specific condition
324 731, 324 7611, 324522, 361 31, 455 674, 455 677, G08B 2100
Patent
active
061043044
ABSTRACT:
An internal self-test and status reporting system for an electrical device with a plurality of components, a power supply and a microcontroller or microprocessor. The self-test system powers on and off each component one at a time and measures an amount of current drawn by the component with an internal current sensor. The self-test system compares the measured amount of current drawn by the component with an expected, predetermined current value or range. The self-test system then reports whether the measured amount of current drawn by the component matches the expected, predetermined current value or is within the expected, predetermined current range. The self-test system reports the results of the self-test by generating a pattern of signals on a general purpose input/output (GPIO) line, displaying a message on a display of the device, or generating a sound with a speaker of the device.
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Clark Ricke W.
Cox Earl C.
O'Leary Sean
Shaheen David M.
Conexant Systems Inc.
Pham Toan
Wu Daniel J.
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