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AssigneeGuangzhou Tyrafos Semiconductor Technologies Co., LTD
InventorsPing-Hung Yin, Jia-Shyang Wang
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A light sensor and its calibration method are provided. The light sensor includes a light source, a sensing sub-pixel, and a control circuit. The light source emits a sensing light beam. The sensing sub-pixel includes a diode, a quenching resistor, and a time-to-digital converter. The diode has a first terminal coupled to an operation voltage. The quenching resistor is coupled between a second terminal of the diode and a ground voltage. The time-to-digital converter is coupled to the second terminal of the diode. The control circuit is coupled to the sensing sub-pixel and calibrates a sensing sensitivity of the sensing sub-pixel according to at least one of a photon detection probability, an internal gain value, and a resistance value of the quenching resistor corresponding to the diode of the sensing sub-pixel, so that the sensing sub-pixel generates a single-photon avalanche diode sensing signal only when receiving the sensing light beam.
A light sensor, comprising:
A calibration method, adapted to a light sensor, wherein the light sensor comprises a light source, a sensing sub-pixel, and a control circuit, and the sensing sub-pixel comprises a diode, a quenching resistor, and a time-to-digital converter, the calibration method comprising:
Dependencies are inferred from the claim text.