Imaging apparatus, current/voltage conversion circuit, and imaging method
AssigneeSony Corporation
InventorsTakahiro Sonoda, Atsushi Suzuki
Life of this patent
Estimating the term…
Abstract
An imaging apparatus includes an image sensor configured to convert an incident electromagnetic wave into current; a current/voltage conversion circuit that is configured to convert the current input from the image sensor into voltage and includes an operational amplifier configured to output voltage corresponding to the current input from the image sensor; and a sampling circuit that is configured to sample output of the operation amplifier and is provided between input/output terminals of the operational amplifier.
Claims20
An imaging apparatus, comprising:
- an image sensor configured to convert an incident electromagnetic wave into current;
- a current/voltage conversion circuit that is configured to convert the current input from the image sensor into voltage, and includes an operational amplifier that is configured to output voltage corresponding to the current input from the image sensor and includes a first input unit, a second input unit, and an output unit;
- and
- a sampling circuit that is configured to sample output of the operation amplifier, is provided between the second input unit and the output unit of the operational amplifier, and includes a first sampling unit and a second sampling unit respectively disposed between a predetermined voltage source and the output unit.
A current/voltage conversion circuit that converts current input from an image sensor into voltage, comprising:
- an operational amplifier that is configured to output voltage depending on the current input from the image sensor and includes a first input unit, a second input unit, and an output unit;
- and
- a sampling circuit that is configured to sample output of the operation amplifier, is provided between the second input unit and the output unit of the operation amplifier, and includes a first sampling unit and a second sampling unit respectively disposed between a predetermined voltage source and the output unit, the image sensor being configured to convert an incident electromagnetic wave into the current.
An imaging method of converting current input from an image sensor into voltage, comprising:
- sampling switch on-resistance noise of a switch circuit configured to reset an integration capacity of an operational amplifier that includes a first input unit, a second input unit, and an output unit;
- sampling the voltage output from the operation amplifier depending on current input from the image sensor via a first sampling unit and a second sampling unit respectively disposed between a predetermined voltage source and the output unit;
- and
- reducing the switch on-resistance noise from the voltage to output the voltage, the operational amplifier being configured to output voltage depending on the current input from the image sensor, the image sensor being configured to convert an incident electromagnetic wave into the current.
Dependencies are inferred from the claim text.