Voltage recorder, image processing apparatus, and voltage recording method
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United States of America Patent
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Jul 20, 2010
Grant Date -
Jul 31, 2008
app pub date -
Oct 3, 2007
filing date -
Jan 26, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A voltage recorder includes: a receiver that receives a signal from an apparatus operating on power supplied from a power supply circuit, notifying an operational status of the apparatus; a first memory that stores sampling periods in association with an operational status of the apparatus; a sampling period determining unit that determines, with reference to the first memory, a sampling period on the basis of the operational status of the apparatus notified by the signal received from the apparatus; a voltage data generating unit that samples a voltage supplied from the power supply circuit in the determined sampling periods, and generates measured voltage data indicative of the sampled voltage; an abnormality notification unit that compares the voltage indicated by the generated measured voltage data and a predetermined threshold, and determines whether to send an abnormality notification signal depending on a result of the comparison.
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