Electronic device, power control method and storage medium storing program thereof

Abstract

In an electronic device, a first sensor detects a detection target on a first region. A second sensor detects a detection target on a second region. A third sensor detects a detection target on a third region. A power control unit turns on the second sensor in a case where the first sensor detects the detection target on the first region. The power control unit turns on the third sensor and turns off the first sensor in a case where the second sensor detects the detection target on the second region.

1 - 7 . (canceled) 
     
     
         8 . An electronic device comprising:
 a first sensor for detecting a detection target in a first region;   a second sensor for detecting a detection target in a second region;   a third sensor for detecting a detection target in a third region; and   a power controller configured to turn on the second sensor in a case where the first sensor detects the detection target in the first region, and turn on the third sensor and turn off the first sensor in a case where the second sensor detects the detection target in the second region.   
     
     
         9 . The device according to  claim 8 , wherein the power controller controls the electronic device to transit to a normal operation mode from a power saving mode in a case where the second sensor detects the detection target in the second region. 
     
     
         10 . The device according to  claim 8 , wherein the power controller turns off the second sensor, in a case where the first sensor detects the detection target in the first region after the second sensor detects the detection target in the second region. 
     
     
         11 . The device according to  claim 10 , wherein the power controller controls the electronic device to transit to a power saving mode from a normal operation mode, in a case where the first sensor detects the detection target in the first region after the second sensor detects the detection target in the second region. 
     
     
         12 . The device according to  claim 8 , wherein the power controller comprises a switch which is connected to the second sensor and is for turning on or off the second sensor, and
 the switch is configured to open or close a power supply line to the second sensor using a detection signal line of the first sensor.   
     
     
         13 . A power control method for an electronic device that includes a first sensor for detecting a detection target in a first region, a second sensor for detecting a detection target in a second region, and a third sensor for detecting a detection target in a third region, the method comprising:
 turning on the second sensor in a case where the first sensor detects the detection target in the first region, and   turning on the third sensor and turning off the first sensor in a case where the second sensor detects the detection target in the second region.   
     
     
         14 . A non-transitory computer-readable storage medium storing a program for controlling an electronic device that includes a first sensor for detecting a detection target in a first region, a second sensor for detecting a detection target in a second region, and a third sensor for detecting a detection target in a third region, the program causing a computer to:
 turn on the second sensor in a case where the first sensor detects the detection target in the first region, and   turn on the third sensor and turn off the first sensor in a case where the second sensor detects the detection target in the second region.