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US 2024/0192328 A1Published application
Photodetection device and distance measurement device
AssigneeKabushiki Kaisha Toshiba
InventorsToshiki SUGIMOTO, Tuan Thanh TA, Akihide SAI
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Abstract
A photodetection device has a photodetection element, a reset circuit that sets one end of the photodetection element to a predetermined initialization voltage, a firing detection circuit that detects firing of the photodetection element by comparing a voltage at the one end of the photodetection element or a current flowing through the one end with a threshold, a monitor circuit that monitors an output signal of the firing detection circuit, and a threshold control circuit that controls the threshold based on a monitor output of the monitor circuit.
Claims20
A photodetection device comprising:
- a photodetection element;
- an reset circuit that sets one end of the photodetection element to a predetermined initialization voltage;
- a firing detection circuit that detects firing of the photodetection element by comparing a voltage at the one end of the photodetection element or a current flowing through the one end with a threshold;
- a monitor circuit that monitors an output signal of the firing detection circuit;
- and
- a threshold control circuit that controls the threshold based on a monitor output of the monitor circuit.
3 more elements
Dependencies are inferred from the claim text.