Canon Kabushiki Kaisha

Yuichi Naito

Takashi Yamazaki

Kazumasa Matsumoto

Kanako Dowaki

Hidehiko Saito

Keigo Yokoyama

Daisuke Kobayashi

Hideyuki Okada

Eriko Sato

Akira Tsukuda

Shigeo Kobayashi

Tomoya Suzuki

Hiroki Asai

Yukio Araoka

Hiroaki Niwa

Kai Suzuki

A radiation imaging apparatus for use in a radiation imaging system including a radiation source and a camera includes one or more controllers that acquire state information of the radiation imaging apparatus and perform, in response to acquisition of state information corresponding to an abnormality of the radiation imaging apparatus, communication to cause the camera to perform image capturing on a range including the radiation imaging apparatus.

Radiation imaging apparatus, radiation imaging system, method, and non-transitory storage medium

A setting unit configured to set a reference orientation for calculating the orientation of a radiation detector and a reference orientation for calculating the orientation of the radiation generator sets the reference orientations of the radiation detector and the radiation generator in response to determining that a mobile radiography unit equipped with the radiation generator stands still, with the radiation detector housed, to determine whether the radiation generator and the radiation detector are arranged according to the imaging procedure.

Radiation imaging apparatus, radiation detector, method and apparatus for controlling radiation imaging apparatus, and program for the same

A radiation imaging apparatus is provided. The apparatus comprises pixels configured to detect radiation with a first sensitivity and a second sensitivity lower than the first sensitivity. Each of the pixels starts an operation for accumulating a signal with the first sensitivity in accordance with a start of irradiation of the radiation imaging apparatus with radiation, samples an accumulated signal as a first signal after lapse of a first time shorter than a period of irradiation with radiation since a start of an operation for accumulating a signal, switches to the second sensitivity, and accumulates a signal, samples an accumulated signal as a second signal in accordance with an end of irradiation of the radiation imaging apparatus with radiation, and outputs the first signal and the second signal to generate a radiation image based on the first signal and the second signal.

Radiation imaging apparatus, radiation imaging system, drive method for radiation imaging apparatus, and non-transitory computer-readable storage medium

A radiation imaging apparatus, comprising a sensor array in which a plurality of sensors capable of detecting radiation are arrayed, and a readout unit configured to read out image data from the sensor array, wherein the sensor array has, as an operation mode, a binning mode in which signals of not less than two sensors are collectively output, and the readout unit includes a correcting unit configured to correct image data read out from the sensor array irradiated with radiation, based on image data read out in the binning mode from the sensor array not irradiated with radiation.

Radiation imaging apparatus, method of driving the same, and radiation imaging system

An image sensor driving apparatus extracts an image signal from an image sensor including a plurality of photoelectric conversion elements two-dimensionally arrayed, and includes a conversion unit which converts the image signal into digital data by performing offset correction for the image signal. The apparatus obtains digital data corresponding to a first sampling count by causing the conversion unit to process a reference voltage signal in accordance with a synchronization signal which determines an imaging frame rate, and obtains digital data corresponding to a second sampling count by causing the conversion unit to process a reference voltage signal every time extracting an image signal from a photoelectric conversion element group obtained by dividing a plurality of photoelectric conversion elements. The apparatus generates a correction value used for offset correction based on the obtained digital data corresponding to the first and second sampling counts.

Image sensor driving apparatus, method and radiation imaging apparatus

A radiation image sensing apparatus includes an image sensor configured to sense a plurality of radiation images at a frame rate according to a synchronization signal, and a controller configured to control the image sensor. In a case in which the frame rate is lower than a predetermined frame rate, the controller causes the image sensor to perform a temperature controlling operation of generating additional heat other than heat generated by an image sensing operation in addition to the image sensing operation so as to reduce a change in a temperature of the image sensor.

Radiation image sensing apparatus and radiation image sensing system

An imaging apparatus determines, based on a frame interval associated with imaging of the object, the number of output values to be measured, and inputs electric signals of a given value to amplifiers to measure the determined number of output values during a time after a readout circuit performs a readout operation for the photoelectric conversion elements of one line and before the readout circuit performs a readout operation for the photoelectric conversion elements of the next one line, calculates a difference between the measured output value and a predetermined reference value, and corrects a measurement value of one line of the object by increasing or decreasing the measurement value by the difference.

Imaging apparatus, control method therefor, and storage medium

A radiation imaging apparatus including an accumulation unit to accumulate electrical charge in accordance with radiation for each pixel circuit of a plurality of pixel circuits. An output unit outputs an analog signal for each pixel circuit by sampling and holding an electrical signal in accordance with a voltage of an accumulation unit for each pixel circuit. The output unit stops the output during a reset operation of the accumulation unit. A selection unit selects pixel circuits that output the analog signals. The selection unit stops the selection during a reset operation of the accumulation unit. A determination unit determines whether a total time of an exposure time and an output time required to output the analog signals corresponding to all the pixel circuits is longer than an imaging interval that is based on a synchronization signal representing a radiation generation timing input from an external apparatus.

Radiation imaging apparatus, control method for radiation imaging apparatus, and storage medium

A photoelectric conversion system is configured to correct a difference in offset component of signals to be outputted per photoelectric conversion device.

Photoelectric conversion system

An imaging apparatus including: a plurality of pixels including a photoelectric conversion element and a sample hold circuit; a plurality of signal lines configured to read from the plurality of pixels an electric signal held in the sample hold circuit therein; a imaging control unit configured to perform a first control for applying the held electric signal to the plurality of signal lines, and a second control for sequentially applying to the signal lines the electric signal obtained corresponding to light received by each of the plurality of pixels and reading the electric signal, after the first control has been performed; and a generation unit configured not to create image data based on the electric signal applied to the signal line by the first control but to create the image data based on the electric signal read via the signal line by the second control.

Imaging apparatus, radiation imaging system, and control method of image sensor

In an optical information recording-reproducing apparatus, a spot for recording and a plurality of spots for reproduction irradiate, from an optical head, an information recording medium having a plurality of tracks and having address information recorded at the head of each track. The plurality of light spots are caused to scan the plurality of information tracks of the recording medium at one time to thereby record information or reproduce recorded information. Further, in the apparatus, such determination is made, on the basis of the address information reproduced by a predetermined preceding one of the plurality of spots for reproduction, as to whether the track on which the spot for recording or the spots for reproduction are positioned is a target track.

Optical information recording-reproducing apparatus for effecting

In an information recording/reproducing apparatus in which recording of information is effected by scanning an information track of an information recording medium with a recording light spot an verification is effected simultaneously with recording by scanning with a verifying light spot, there are provided a memory for storing the recording data released from the memory, and a second resister for temporarily storing reproduction data obtained for verification. The data transfer is performed in such a manner that the recording data from the memory are held in succession by a predetermined unit of data in the first register and the reproduction data are held in succession by predetermined unit of data in the second register.

Optical information recording/reproducing apparatus incorporating memory

An optical information reproduction apparatus has a section which scans with an optical beam an optical information recording medium in which information is recorded. The optical beam is modulated according to the information. From this modulated optical beam, the corresponding reproduction signal is generated, then binary-converted. A sampling clock synchronized with this binary-converted reproduction signal is generated. The binary-converted reproduction signal is sampled with the synchronized sampling clock to reproduce the information. The response of the sampling-clock generating section can be switched. This optical information reproduction apparatus enables reliable information reproduction.

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Yokohama, Japan

Yuichi Naito