Abstract: In order to provide a photoelectric conversion apparatus, which is an apparatus excellent in reading speed, high S/N, high tone level, and low cost, the photoelectric conversion apparatus has a photoelectric conversion circuit section comprising a plurality of photoelectric conversion elements, switching elements, matrix signal wires, and gate drive wires arranged on a same substrate in order to output parallel signals, a driving circuit section for applying a driving signal to the gate drive wire, and a reading circuit section for converting the parallel signals transferred through the matrix signal wires to serial signals to output them, wherein the reading circuit section comprises at least one analog operational amplifier connected with each of the matrix signal wires, transfer switches for transferring output signals from the respective matrix signal wires, output through each amplifier, reading capacitors, and reading switches for successively reading the signals out of the reading capacitors in the for

Abstract: A single flat panel detector provides radiation images which can correspond with various radiographic modes. In a radiation imaging apparatus including a flat panel detector which derives a radiation image according to incident radiation, a holding unit which holds the flat panel detector and a connecting mechanism capable of performing a connecting and a disconnecting between the holding unit and the flat panel detector, the flat panel detector can be controlled so that the maximum number of radiation images that the flat panel detector can derive when the flat panel detector is disengaged from the holding unit is smaller than the maximum number of radiation images that the flat panel detector can derive when the flat panel detector is held by the holding unit.

Abstract: A radiation imaging apparatus comprises a first diving circuit unit to drive a first switching element connected to a conversion element, wherein the conversion element converting radiation into charges, a second diving circuit unit to drive a second switching element connected to the conversion element, and a control unit to control the first diving circuit and the second diving circuit independently at different timing.

Abstract: As a radiation imaging apparatus which can easily and effectively correct line noise, there is provided a radiation imaging apparatus having: a conversion unit having a pixel region in which a plurality of pixels each having a conversion element (202) for converting a radiation into an electric charge and a switching element (201) for outputting an electric signal based on the electric charge are arranged in a matrix; a capacitor element (301) arranged outside of the pixel region; a reading out circuit unit (108) for reading out the electric signals from the pixels row by row and reading out, in parallel, a signal from the capacitor element and the electric signal from the pixel; and a correction unit for correcting the electric signal based on the signal from the capacitor element.

Abstract: As a radiation imaging apparatus which can easily and effectively correct line noise, there is provided a radiation imaging apparatus having: a conversion unit having a pixel region in which a plurality of pixels each having a conversion element (202) for converting radiation into an electric charge and a switching element (201) for outputting an electric signal based on the electric charge are arranged in a matrix; a capacitor element (301) arranged outside the pixel region; a reading out circuit unit (108) for reading out the electric signals from the pixels row by row and reading out, in parallel, a signal from the capacitor element and the electric signal from the pixel; and a correction unit for correcting the electric signal based on the signal from the capacitor element.

Abstract: In order to provide a photoelectric conversion apparatus, which is an apparatus excellent in reading speed, high S/N, high tone level, and low cost, the photoelectric conversion apparatus has a photoelectric conversion circuit section comprising a plurality of photoelectric conversion elements, switching elements, matrix signal wires, and gate drive wires arranged on a same substrate in order to output parallel signals, a driving circuit section for applying a driving signal to the gate drive wire, and a reading circuit section for converting the parallel signals transferred through the matrix signal wires to serial signals to output them, wherein the reading circuit section comprises at least one analog operational amplifier connected with each of the matrix signal wires, transfer switches for transferring output signals from the respective matrix signal wires, output through each amplifier, reading capacitors, and reading switches for successively reading the signals out of the reading capacitors in the for

Abstract: A radiation imaging apparatus having high frame rate and picture quality by offset correction has: a sensor array having matrix-shaped pixels each including a converting element and a TFT; a driver for supplying signals to control terminals of the TFTs row by row; a reader for holding a signal into a first or second sampling/holding (S/H) circuit and outputting an image signal; and a controller for controlling the driver and reader. Until the image signal is output after the irradiation of pulsating radiation, the TFT of a pixel is driven so as to output a first signal, the TFT of the pixel to which the first signal has been output is driven so as to output a second electric signal, and the reader outputs the image signal of the signal showing a difference between the first and second signals held in the first and second S/H circuits.

Abstract: A photoelectric converter includes a plurality of substrates, which are located adjacent to each other and on which a plurality of photoelectric conversion devices are two-dimensionally arranged, and either scan circuits or detection circuits that are arranged on two opposing sides of the photoelectric converter, whereby scanning directions either from the scan circuits or from the detection circuits, which are arranged on the two opposing sides, are capable of being set so as to be performed in like directions.

Abstract: A single flat panel detector provides radiation images which can correspond with various radiographic modes. In a radiation imaging apparatus including a flat panel detector which derives a radiation image according to incident radiation, a holding unit which holds the flat panel detector and a connecting mechanism capable of performing a connecting and a disconnecting between the holding unit and the flat panel detector, the flat panel detector can be controlled so that the maximum number of radiation images that the flat panel detector can derive when the flat panel detector is disengaged from the holding unit is smaller than the maximum number of radiation images that the flat panel detector can derive when the flat panel detector is held by the holding unit.

Abstract: To provide a radiation imaging apparatus capable of restraining the change of image qualities due to the change of sensitivities of an MIS-type photoelectric conversion element and its control method. Therefore, an MIS-type photoelectric conversion element 217 is set to a saturation state before performing radiation imaging. As means for realizing the above mentioned, a light source 601, power supply 603 for making the light source 601 emit light, and switch 605 are provided. The light source 601 can use a light source capable of discharging the light having a wavelength which can be detected by a photoelectric conversion layer 209 at optional timing. For example, it is possible to use a light source in which a plurality of LEDs or cold cathode ray tubes are arranged, a light guide plate is combined with an LED or cold cathode ray tube, or an EL device.

Abstract: An imaging apparatus according to the present invention includes a transmitting path transmitting the output electric signal, and a read out circuit performing a sampling and holding operation for holding the electric signal read out through the transmitting path, and performing a reset operation for reset of the transmitting path, and includes a control unit for controlling an outputting drive circuit and a read out circuit so as to perform row by row the sampling and holding operation after a start of the output operation, to perform the reset operation after the sampling and holding operation, and to perform a termination of the output operation after the reset operation. This can provide an imaging apparatus and a radiation imaging apparatus that can reduce a frame time without reducing an S/N ratio of an image signal.

Abstract: A radiation imaging apparatus is capable of taking a moving picture by acquisition by a reading circuit of a plurality of radiation image signals on the basis of a plurality of successive times of irradiation of a radiation detector with radiation rays. The radiation detector has a two-dimensional array of pixels. In a period between a start of an n-th time of irradiation with radiation rays and a start of an (n+1)-th time of irradiation with radiation rays, where n is a natural number, a controller switches an operation status of an analog-to-digital converter that converts electric signals read by the reading circuit into digital signals so that power consumption of the analog-to-digital converter is reduced.

Abstract: For reducing extremely conspicuous line noise appearing in a picked up image with a simple configuration without complicating the configuration of an apparatus, an imaging apparatus a first sampling and holding circuit for sampling and holding an electric signal from pixels in one column of the detection unit and a second sampling and holding circuit for sampling and holding and electric signal from pixels in the other column of the detection unit, and a control unit for controlling such that the first and second sampling and holding circuits perform the sampling and holding in mutually different timings.

Abstract: An imaging apparatus includes a sensor array in which a plurality of pixels each including a photoelectric conversion element and a switching element are arrayed in a row direction and a column direction, signal wiring connected to a plurality of the switching elements provided in the column direction, and a reading-circuit unit connected to the signal wiring, where the reading-circuit unit includes a first operational area including a first amplifying circuit and a second operational area including a second amplifying circuit connected to the first operational area, and the first and second amplifying circuits are each arranged to be supplied with power within a range, the maximum of the power-supply voltage range of the first amplifying circuit being larger than the maximum of a power-supply voltage range of the second amplifying circuit.

Abstract: To provide a radiation imaging apparatus which is capable of both connecting state radiographing for radiographing with a C arm connected and non-connecting state radiographing for radiographing with the C arm disconnected, and is convenient and obtains high quality images, the apparatus includes: a flat panel detector; a holding unit for holding at least the flat panel detector; and a control unit for controlling the flat panel detector.

Abstract: A radiation image pickup apparatus or the like which realizes improvement of noise resistance characteristics when adding pixel signals is provided. For this purpose, the radiation image pickup apparatus has a switching unit which is arranged between a signal wiring and an amplifier and can switch electrical connection among a plurality of signal wirings and electrical connection between a predetermined one of the plurality of signal wirings and the amplifier corresponding thereto. In accordance with mode setting, the switching unit switches a first state where the plurality of signal wirings are electrically connected and the predetermined signal wiring and the corresponding amplifier are electrically disconnected and a second state where the plurality of signal wirings are electrically disconnected and the predetermined signal wiring and the corresponding amplifier are electrically connected.

Abstract: A radiation image pickup apparatus or the like which realizes improvement of noise resistance characteristics when adding pixel signals is provided. For this purpose, the radiation image pickup apparatus has a switching unit which is arranged between a signal wiring and an amplifier and can switch electrical connection among a plurality of signal wirings and electrical connection between a predetermined one of the plurality of signal wirings and the amplifier corresponding thereto. In accordance with mode setting, the switching unit switches a first state where the plurality of signal wirings are electrically connected and the predetermined signal wiring and the corresponding amplifier are electrically disconnected and a second state where the plurality of signal wirings are electrically disconnected and the predetermined signal wiring and the corresponding amplifier are electrically connected.

Abstract: An imaging apparatus capable of reducing a line noise artifact in a simple configuration without complicated operations includes: a plurality of pixels arranged in row and column directions and having a photoelectric conversion element and a switch element; a plurality of signal wirings connected to the plurality of switch elements in the column direction; a read-out circuit connected to the plurality of signal wirings; and a power source for supplying a voltage to the photoelectric conversion element. With the configuration, the plurality of pixels are classified into a plurality of groups, and the power sources are independently provided for each of the plurality of groups.

Abstract: A radiation image pickup apparatus which selectively executes a first reading operation driving a detection unit irradiated with the radiation to read a first signal value, a second reading operation driving the detection unit without being irradiated with any radiations before the first reading operation to read a second signal value, and a third reading operation driving the detection unit without being irradiated with any radiations after the first reading operation to read a third signal value, and subtracts a signal value produced by the processing of the second signal value and the third signal value from the first signal value, thereby reducing an offset component and random noises without lowering a frame rate and its control method are provided.

Abstract: For reducing extremely conspicuous line noise appearing in a picked up image with a simple configuration without complicating the configuration of an apparatus, an imaging apparatus a first sampling and holding circuit for sampling and holding an electric signal from pixels in one column of the detection unit and a second sampling and holding circuit for sampling and holding and electric signal from pixels in the other column of the detection unit, and a control unit for controlling such that the first and second sampling and holding circuits perform the sampling and holding in mutually different timings.