Control apparatus, control method, program, and electronic device system that provide low power consumption

A control method for an image sensor, comprising:

• operating in a sleep state when detected illuminance is less than a threshold value;
• setting an operation mode of the image sensor directly from the sleep state to a low power consumption mode when the detected illuminance is equal to or greater than the threshold value;
• and
• setting the operation mode of the image sensor from the low power consumption mode to a normal mode based on detection of a predetermined subject in an image obtained by the image sensor in the low power consumption mode.

A non-transitory computer readable medium storing instructions that, when executed by processing circuitry, perform a control method for an image sensor, comprising:

• operating in a sleep state when detected illuminance is less than a threshold value;
• setting an operation mode of the image sensor directly from the sleep state to a low power consumption mode when the detected illuminance is equal to or greater than the threshold value;
• and
• setting the operation mode of the image sensor from the low power consumption mode to a normal mode based on detection of a predetermined subject in an image obtained by the image sensor in the low power consumption mode.

An electronic device system comprising:

• an image sensor;
• and
• a control unit that controls the image sensor,
• the control unit including processing circuitry configured to:
• operate in a sleep state when detected illuminance is less than a threshold value;
• set an operation mode of the image sensor directly from the sleep state to a low power consumption mode when the detected illuminance is equal to or greater than the threshold value;
• and
• set the operation mode of the image sensor from the low power consumption mode to a normal mode based on detection of a predetermined subject in an image obtained by the image sensor in the low power consumption mode.