Photoelectric conversion device, movable apparatus, control method, and storage medium

A movable apparatus comprising:

• a plurality of pixels each including a photoelectric conversion unit that emits pulses corresponding to photons, a counter that counts the number of the pulses, and a memory that stores a count value of the counter;
• one or more memories storing instructions;
• and
• one or more processors executing the instructions to
• generate a signal based on a difference between a count value of the counter at the start of an accumulation period and a count value at the end of the accumulation period,
• perform control so that a signal generated in a first accumulation period is output between the end of the first accumulation period and the end of a second accumulation period, wherein one full frame period includes the first accumulation period and the second accumulation period longer than the first accumulation period,
• perform recognition processing based on an image signal, and
• change a frequency of recognition within the one full frame period based on subject information in the recognition processing, wherein
• an operation of the movable apparatus is controlled based on a recognition result of the recognition processing.

A method of controlling a photoelectric conversion device including a plurality of pixels each including a photoelectric conversion unit that emits pulses corresponding to photons, a counter that counts the number of the pulses, and a memory that stores a count value of the counter, the method comprising:

• generating a signal based on a difference between a count value of the counter at the start of an accumulation period and a count value at the end of the accumulation period;
• performing control so that a signal generated in a first accumulation period is output between the end of the first accumulation period and the end of a second accumulation period, and one full frame period includes the first accumulation period and the second accumulation period longer than the first accumulation period;
• performing recognition processing based on an image signal;
• and
• changing a frequency of recognition within the one full frame period based on subject information.

A non-transitory computer-readable storage medium configured to store a computer program for a photoelectric conversion device comprising instructions for executing following processes,

• wherein the photoelectric conversion device includes a plurality of pixels each including a photoelectric conversion unit that emits pulses corresponding to photons, a counter that counts the number of the pulses, and a memory that stores a count value of the counter;
• the computer program comprising instructions for executing following processes:
• generating a signal based on a difference between a count value of the counter at the start of an accumulation period and a count value at the end of the accumulation period;
• performing control so that a signal generated in a first accumulation period is output between the end of the first accumulation period and the end of a second accumulation period, and one full frame period includes the first accumulation period and the second accumulation period longer than the first accumulation period;
• performing recognition processing based on an image signal;
• and
• changing a frequency of recognition within the one full frame period based on subject information.