IMAGE FORMING APPARATUS AND POWER CONTROL METHOD FOR IMAGE FORMING APPARATUS
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United States of America Patent
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Issued Date -
Jan 25, 2018
app pub date -
Jul 12, 2017
filing date -
Jul 22, 2016
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Abstract
A control apparatus configured to control power of a device that communicates with a host system via a communication interface which complies with a predetermined standard includes a reception unit configured to receive a signal indicating that the host system transitions to a predetermined power state and a determination unit configured to determine, according to reception of the signal indicating that the host system transitions to the predetermined power state, a power state of each of the device and a physical layer of the communication interface used by the device from a plurality of power states, based on a power state of the host system, a power state of the device, and a power state of the physical layer of the communication interface included in the device and complying with the predetermined standard.
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