Apparatus that detects person by using sonic sensor, method, electronic apparatus that includes the detection apparatus, and storage medium

A method of controlling an information processing apparatus, wherein the information processing apparatus includes:

• a sonic sensor that outputs a sonic wave and receives a sonic wave, and outputs a signal corresponding to the received sonic wave;
• a storage unit that stores a background data indicating objects or people previously located in front of the information processing apparatus;
• and
• a control unit,
• the method comprising:
• the control unit periodically comparing the background data and a frame data including a plurality of signals output from the sonic sensor during a predetermined measurement time and saving a difference between both the background data and the frame data;
• and
• the control unit shifting a power state of the information processing apparatus to a first power state from a second power state in which power consumption is lower than power consumption in the first power state based on a plurality of the difference.

A non-transitory computer readable storage medium storing a program for causing a computer processor to perform a control method of an information processing apparatus, wherein

• the information processing apparatus includes:
• a sonic sensor that outputs a sonic wave and receives a sonic wave, and outputs a signal corresponding to the received sonic wave;
• a storage unit that stores a background data indicating objects or people previously located in front of the information processing apparatus;
• and
• a control unit,
• the program comprising:
• code for the control unit to periodically compare the background data and a frame data including a plurality of signals output from the sonic sensor during a predetermined measurement time and save a difference between both the background data and the frame data;
• and
• code for the control unit to shift a power state of the information processing apparatus to a first power state from a second power state in which power consumption is lower than power consumption in the first power state based on a plurality of the difference.