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US 12,111,215 B2Granted
Imaging device and calibration method
AssigneeSony Semiconductor Solutions Corporation
InventorsTakuro Kosaka, Naoki Kawazu, Takumi Oka
Life of this patent
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Abstract
An imaging device (1) according to the present disclosure includes a pixel array unit (10) that includes a pixel, an analog signal generation unit, an A/D conversion unit (23), and a switch. The analog signal generation unit generates an analog signal based on a temperature around the pixel array unit (10). The A/D conversion unit (23) converts the analog signal into a digital signal. The switch cuts off the analog signal to be supplied to the A/D conversion unit.
Claims8
An imaging device, comprising:
- a pixel array unit including pixels;
- an analog signal generation unit configured to generate an analog signal based on a temperature around the pixel array unit;
- an analog to digital (A/D) conversion unit configured to convert the analog signal into a digital signal;
- a switch configured to cut off the analog signal to be supplied to the A/D conversion unit;
- and
- a correction unit configured to calculate a parameter of a correction calculation expression for correction of the digital signal based on a first digital signal obtained through A/D conversion from the analog signal cut off by the switch and based on a second digital signal obtained through the A/D conversion from the analog signal generated by the analog signal generation unit.
3 more elements
A calibration method, comprising:
- cutting off an analog signal generated based on a temperature;
- converting the cutoff analog signal into a first digital signal;
- outputting the analog signal;
- converting the analog signal into a second digital signal;
- and
- calculating a parameter of a correction calculation expression for correcting a digital signal obtained through analog to digital (A/D) conversion from the analog signal generated based on the temperature around a pixel array unit,
- wherein the calculation of the parameter of the correction calculation expression for the correction of the digital signal is based on the first digital signal and the second digital signal.
4 more elements
Dependencies are inferred from the claim text.