Canon Kabushiki Kaisha

Mitsubishi Electric Corporation

Yuki Iwabuchi

Tomoyuki Yagi

Yoshiaki Ishii

Yutaka Ishinari

Kai Suzuki

Toshikazu Tamura

Kazunari Morita

Hiroki Hikosaka

A radiation imaging apparatus includes a radiation detector and one or more controllers being configured to acquire first output information and then acquire second output information being information about a charge accumulated in a plurality of pixels without radiation irradiation on the radiation detector, the first output information being information about the charge accumulated in the plurality of pixels with radiation irradiation on the radiation detector, wherein the first output information and the second output information are information for acquiring a corrected radiation image, and wherein an output value of a predetermined row that is included in the first output information is an output value of the charge accumulated over a first period, and an output value of the predetermined row that is included in the second output information is an output value of the charge accumulated over a second period, the second period being longer than the first period.

Radiation imaging apparatus, radiation imaging system, and method for controlling radiation imaging apparatus

A radiation imaging apparatus is provided. The radiation imaging apparatus comprises a plurality of pixels used to acquire a radiation image, and a readout circuit configured to read out a signal from each of the plurality of pixels. Correction image data used for performing offset correction is acquired from the plurality of pixels in an acquisition mode associated with an estimated value of the signal and system noise generated when the readout circuit reads out the signal, the estimated value and the system noise being set according to an imaging mode by a user.

Radiation imaging apparatus, radiation imaging system, control method of radiation imaging apparatus, and non-transitory computer-readable storage medium

A radiation imaging apparatus comprising a pixel array and a readout circuit is provided. The readout circuit includes an integrating amplifier configured to read out a signal from the pixel, a sample-and-hold circuit configured to sample an output from the integrating amplifier, and an A/D convertor configured to perform analog/digital conversion on an output from the sample-and-hold circuit and output the converted output. The apparatus performs first control and second control in parallel in an accumulation period for accumulating the signal in the pixel array. In the first control, the A/D convertor performs an analog/digital conversion operation, and in the second control, the integrating amplifier outputs a reference potential and the A/D convertor is electrically connected to a node configured to output the reference potential of the integrating amplifier.

Radiation imaging apparatus, radiation imaging system, method of controlling radiation imaging apparatus, and non-transitory computer-readable storage medium

A radiation imaging apparatus includes a pixel array including n pixel rows, where n&#x2265;3, and a driving circuit configured to scan the pixel array from a first row toward an nrow, counting from one end of the pixel array. In a case where a region of interest is included in a partial region composed of pixel rows from an irow to a jrow, where 1&#x3c;i&#x2264;j&#x3c;n, the driving circuit starts scanning of the pixel array from the first row, and starts scanning of the pixel array from the first row again during scanning of pixel rows from a (j+1)row to the nrow.

Radiation imaging apparatus, control method for the same, and radiation imaging system

A radiation imaging apparatus includes a pixel array arranged with a plurality of pixels including conversion units configured to convert radiation into charges and accumulate the charges, a bias line connected to the conversion units of the plurality of pixels, a bias circuit configured to supply a bias potential to the bias line and detect a current flowing in the bias line, a noise reduction circuit configured to reduce, separately from the bias circuit, noise included in the bias potential from the bias circuit, and a switch configured to connect the noise reduction circuit to the bias line.

Radiation imaging apparatus and radiation imaging system

The present invention is a power supply control apparatus that controls pulse discharge occurring in a machining gap in an electric discharge machine. The power supply control apparatus includes: a voltage level detecting device that detects the voltage level of a discharge voltage generated in the machining gap; a voltage level comparator hat compares the voltage level with a voltage level reference value, and outputs a comparison result; and a determining unit that, on the basis of the comparison result, determines whether a discharge pulse is abnormal in a designated one of a plurality of determination modes. The determination method can be designated during machining.

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Kawasaki, Japan

Yuki Iwabuchi