Canon Kabushiki Kaisha

Kanako Sato

Katsuro Takenaka

Kazumasa Matsumoto

A radiation imaging apparatus includes an imaging unit having sensors configured to detect radiation, and configured to output an analog signal from each sensor, an AD converter configured to, in each AD conversion period corresponding to a frame, convert the analog signals from the imaging unit into digital signals and output the digital signals as a serial data string of bits, a serial-parallel conversion unit configured to convert, into parallel data, the serial data string of the bits from the AD converter, and an alignment unit configured to perform alignment for the serial-parallel conversion unit to identify the serial data string. The alignment unit performs the alignment in at least a period between one AD conversion period and another analog-to-digital conversion period, in addition to performing the alignment before a first AD conversion period.

Radiation imaging apparatus, control method of radiation imaging apparatus, and radiation imaging system

An image pickup apparatus includes a pixel array including a plurality of pixels arranged in a two-dimensional pattern, each of which includes a conversion unit, an amplification unit, a first holding unit configured to hold a first signal obtained by the amplification unit amplifying an electric charge converted by the conversion unit having a first sensitivity, a second holding unit configured to hold a second signal obtained by the amplification unit amplifying the electric charge converted by the conversion unit having a second sensitivity different from the first sensitivity, and a third holding unit configured to hold an offset signal of the amplification unit, and a correction unit configured to correct the first signal using a second output signal output from the second holding unit or a first output signal output from the first holding unit, and a third output signal output from the third holding unit.

Image pickup apparatus and radiation image pickup system

A radiation imaging apparatus includes a pixel array including a plurality of pixels, each including a conversion unit, a holding unit, an output unit, and a reset unit, a control unit configured to control the pixel array to perform a reset operation for concurrently performing resetting on the plurality of pixels and a holding operation for concurrently performing holding on the plurality of pixels, based on a control signal indicating timing of generation of radiation, and a selection unit configured to perform a selection operation for sequentially selecting a pixel. The selection unit selects at least part of the plurality of pixels in a period from when the control unit performs the reset operation to when the control unit performs the holding operation based on a first control signal among a plurality of the control signals.

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Yokohama, Japan

Kanako Sato