Light receiving device and method for controlling same, and electronic apparatus comprising dual comparison circuits with supplied zero reset signals

A method for controlling a light receiving device,

• wherein the light receiving device includes:
• a pixel including
• a first tap configured to detect a charge photoelectrically converted by a photoelectric conversion unit;
• and
• a second tap configured to detect a charge photoelectrically converted by the photoelectric conversion unit;
• and
• a first comparison circuit configured to compare a first detection signal detected by the first tap and a reference signal;
• and
• a second comparison circuit configured to compare a second detection signal detected by the second tap and the reference signal;
• wherein the method comprises:
• generating a first zero reset signal and supplying the first zero reset signal to the first comparison circuit when the first comparison circuit performs an auto zero operation, and
• generating a second zero reset signal and supplying the second zero reset signal to the second comparison circuit when the second comparison circuit performs an auto zero operation.

An electronic apparatus comprising:

• a light receiving device including:
• a pixel including:
• a first tap configured to detect a charge photoelectrically converted by a photoelectric conversion unit;
• and
• a second tap configured to detect a charge photoelectrically converted by the photoelectric conversion unit;
• and
• a first comparison circuit configured to compare a first detection signal detected by the first tap and a reference signal;
• and
• a second comparison circuit configured to compare a second detection signal detected by the second tap and the reference signal;
• and
• a first zero reset signal generation circuit configured to generate a first zero reset signal that is supplied to the first comparison circuit when the first comparison circuit performs an auto zero operation;
• and
• a second zero reset signal generation circuit configured to generate a second zero reset signal that is supplied to the second comparison circuit when the second comparison circuit performs an auto zero operation.

A light receiving device comprising:

• a pixel including:
• a first tap configured to detect a charge photoelectrically converted by a photoelectric conversion unit;
• and
• a second tap configured to detect a charge photoelectrically converted by the photoelectric conversion unit;
• and
• a first comparison circuit configured to compare a first detection signal detected by the first tap and a reference signal;
• a second comparison circuit configured to compare a second detection signal detected by the second tap and the reference signal;
• a first vertical signal line configured to transmit the first detection signal of the pixel to the first comparison circuit;
• a second vertical signal line configured to transmit the second detection signal of the pixel to the second comparison circuit;
• a first zero reset signal generation circuit connected to the first vertical signal line;
• and
• a second zero reset signal generation circuit connected to the second vertical signal line,
• wherein the first zero reset signal generation circuit and the second zero reset signal generation circuit are connected to a same control line, and
• a depth value corresponding to a distance to a subject is calculated in accordance with a difference between the first detection signal and the second detection signal.