Photoelectric conversion apparatus, photoelectric conversion system and equipment
AssigneeCanon Kabushiki Kaisha
InventorsHideo Kobayashi, Kazuo Yamazaki
Life of this patent
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Abstract
A photoelectric conversion apparatus includes a pixel which includes a photoelectric conversion element; a signal line connected with the pixel; a voltage-current conversion unit configured to convert a voltage signal of the signal line into current; and a conversion unit that includes an oversampling type analog-to-digital conversion circuit that converts the current outputted from the voltage-current conversion unit into digital signals. The voltage-current conversion unit converts the voltage signal of the signal line into the current without sampling and holding and outputs the converted current to the conversion unit.
Claims19
A photoelectric conversion apparatus comprising:
- a pixel which includes a photoelectric conversion element;
- a signal line connected with the pixel;
- a voltage-current conversion unit configured to convert a voltage signal of the signal line into current;
- and
- a conversion unit that includes an oversampling type analog-to-digital conversion circuit that converts the current outputted from the voltage-current conversion unit into digital signals,
- wherein an output node of the signal line connects an input node of the voltage-current conversion unit,
- wherein an input node of the conversion unit connects an output node of the voltage-current conversion unit, and
- wherein a sample-and-hold unit does not exist between the output node of the signal line and the input node of the conversion unit.
A photoelectric conversion apparatus comprising:
- a pixel which includes a photoelectric conversion element;
- a signal line connected with the pixel;
- a voltage-current conversion unit configured to convert a voltage signal of the signal line into current;
- and
- a conversion unit that includes an oversampling type analog-to-digital conversion circuit that converts the current outputted from the voltage-current conversion unit into digital signals,
- wherein an output node of the signal line connects an input node of the voltage-current conversion unit,
- wherein an input node of the conversion unit connects an output node of the voltage-current conversion unit, and
- wherein a signal path from the output node of the signal line to the input node of the conversion unit includes a path where a sample-and-hold unit does not exist.
A photoelectric conversion apparatus comprising:
- a pixel which includes a photoelectric conversion element;
- a signal line connected with the pixel;
- a voltage-current conversion unit configured to convert a voltage signal of the signal line into current;
- and
- a conversion unit that includes an oversampling type analog-to-digital conversion circuit that converts the current outputted from the voltage-current conversion unit into digital signals,
- wherein an output node of the signal line connects an input node of the voltage-current conversion unit,
- wherein an input node of the conversion unit connects an output node of the voltage-current conversion unit, and
- wherein the voltage-current conversion unit is configured to enable to output the current, which was converted from the voltage signal of the signal line without sampling and holding, from the output node of the voltage-current conversion unit to the input node of the conversion unit.
Dependencies are inferred from the claim text.