Patent ID: 9742941
Date: 2017-08-22
CPC Classifications: H04N

Claim:
1. An information processing apparatus comprising: a scanner unit which reads an original; a signal output circuit which outputs a pulse signal; a light emitting element which outputs a light if the pulse signal is in a first state and does not output the light if the pulse signal is in a second state; a light receiving element which outputs a light reception signal based on receiving the light from the light emitting element, the light output from the light emitting element is blocked or transmitted by setting the original to be read by the scanner unit; a processor, which includes a predetermined port and is able to be put into a first processor state and a second processor state, shifts from the second processor state to the first processor state when a predetermined voltage signal is input to the predetermined port, wherein the first processor state is a state in which power supply to the scanner unit is controllable, and the second processor state is a state in which power supply to the scanner unit is uncontrollable; and a detection signal output circuit which receives the pulse signal and the light reception signal and outputs, based on the pulse signal and the light reception signal, a detection signal which is the predetermined voltage signal, wherein, in response to an input of the detection signal to the predetermined port from the detection signal output circuit, the processor shifts from the second power state to the first power state and controls the power supply to the scanner unit to enable the scanner unit to operate.