# US 10,310,105 B2 · Radiation image capturing apparatus and radiation image capturing system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,310,105 B2 - Document ID: US10310105B2 - Status: Granted - Kind: B2 - Application number: 15/960,823 - Filed: 2018-04-24 - Published: 2018-11-29 - Granted: 2019-06-04 - Earliest claimed: 2017-05-24 - Assignees: Konica Minolta, Inc. - Applicants: Konica Minolta, Inc. - Inventors: Ryouhei Kikuchi - Web page: https://patentgrep.com/patent/US10310105B2 ## CPC - G01T 1/208: Circuits specially adapted for scintillation detectors, e.g. for the photo-multiplier section - H04N 23/30: for generating image signals from X-rays - H04N 25/30: for transforming X-rays into image signals - G01T: MEASUREMENT OF NUCLEAR OR X-RADIATION (radiation analysis of materials, mass spectrometry G01N23/00; tubes for determining the presence, intensity, density or energy of radiation or particles H01J47/00) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A radiation image capturing apparatus includes a plurality of radiation detecting elements; a switch element; a scanning line; a signal line; a bias line; a hardware processor; and a reader which reads image data based on detection of irradiation, the image data based on an amount of charge accumulated in the plurality of radiation detecting elements. The hardware processor samples a signal a plurality of times, the signal based on a current of at least one of the currents flowing in the signal line, the bias line, the scanning line, and the detector line within a predetermined term and the hardware processor obtains a digital signal. The hardware processor calculates the obtained digital signal. The hardware processor determines whether the radiation image capturing apparatus is under a disturbance environment based on a result of calculation. ## Claims ### Claim 1 A radiation image capturing apparatus comprising: a plurality of radiation detecting elements which are positioned two-dimensionally; a switch element which holds charge in the radiation detecting elements; a scanning line which drives the switch element; a signal line which is connected through the switch element; a bias line which is connected to the radiation detecting elements; a hardware processor which detects that radiation is irradiated; and a reader which reads image data based on detection of irradiation of radiation by the hardware processor, the image data being based on an amount of charge accumulated in the plurality of radiation detecting elements, wherein: the hardware processor samples a signal a plurality of times, the signal being based on at least one of currents flowing in the signal line, the bias line, the scanning line, and a detector line within a predetermined term, and the hardware processor obtains a digital signal, the hardware processor calculates the obtained digital signal, and the hardware processor determines whether the radiation image capturing apparatus is under a disturbance environment based on a result of calculation, and the hardware processor starts a detection operation to detect the irradiation of the radiation after determining that the radiation image capturing apparatus is not placed under the disturbance environment. ### Claim 2 (depends on 1) The radiation image capturing apparatus according to claim 1, wherein the hardware processor performs calculation of differentiating the obtained digital signal at least once. ### Claim 3 (depends on 1) The radiation image capturing apparatus according to claim 1, wherein the hardware processor removes an offset component from the obtained digital signal. ### Claim 4 (depends on 3) The radiation image capturing apparatus according to claim 3, wherein the hardware processor performs calculation focusing on a sign on a result of a calculation of the digital signal or a result of removing the offset component from the digital signal. ### Claim 5 (depends on 1) The radiation image capturing apparatus according to claim 1, wherein the hardware processor is able to change a radiation detecting threshold to determine whether the radiation is irradiated according to the calculated result. ### Claim 6 (depends on 1) The radiation image capturing apparatus according to claim 1, wherein: the hardware processor compares a signal value of a calculated result with a predetermined threshold for each predetermined term, the hardware processor discontinues the detection operation when it is determined that at least some of the signal values are equal to or more than the threshold while the detection operation is performed, the hardware processor resumes the detection operation when it is determined that all of the signal values are less than the threshold while the detection operation is discontinued. ### Claim 7 (depends on 6) The radiation image capturing apparatus according to claim 6, wherein the threshold used for comparison with the signal value during the detection operation is larger than the threshold used for comparison with the signal value during the discontinuation of the detection operation. ### Claim 8 (depends on 1) The radiation image capturing apparatus according to claim 1, wherein the hardware processor notifies the user that there is a disturbance source nearby when it is determined that the radiation image capturing apparatus is placed under the disturbance environment. ### Claim 9 (depends on 1) A radiation image capturing system comprising: the radiation image capturing apparatus according to claim 1; and a radiation irradiating apparatus which irradiates radiation to the radiation image capturing apparatus. ### Claim 10 (depends on 1) The radiation image capturing apparatus according to claim 1, wherein the disturbance environment is due to electromagnetic radiation. ### Claim 11 A radiation image capturing apparatus comprising: a plurality of radiation detecting elements which are positioned two-dimensionally; a switch element which holds charge in the radiation detecting elements; a scanning line which drives the switch element; a signal line which is connected through the switch element; a bias line which is connected to the radiation detecting elements; a hardware processor which detects that radiation is irradiated; and a reader which reads image data based on detection of irradiation of radiation by the hardware processor, the image data being based on an amount of charge accumulated in the plurality of radiation detecting elements, wherein: the hardware processor samples a signal a plurality of times, the signal being based on at least one of currents flowing in the signal line, the bias line, the scanning line, and the detector line within a predetermined term, and the hardware processor obtains a digital signal, the hardware processor calculates the obtained digital signal, the hardware processor determines whether the radiation image capturing apparatus is under a disturbance environment based on a result of calculation, the hardware processor performs the detection operation and determines, in parallel, whether the radiation image capturing apparatus is placed under the disturbance environment, and the hardware processor discontinues the detection operation when it is determined that the radiation image capturing apparatus is under the disturbance environment while the detection operation is performed. ### Claim 12 (depends on 11) The radiation image capturing apparatus according to claim 11, wherein the hardware processor performs calculation of differentiating the obtained digital signal at least once. ### Claim 13 (depends on 11) The radiation image capturing apparatus according to claim 11, wherein the hardware processor removes an offset component from the obtained digital signal. ### Claim 14 (depends on 13) The radiation image capturing apparatus according to claim 13, wherein the hardware processor performs calculation focusing on a sign on a result of a calculation of the digital signal or a result of removing the offset component from the digital signal. ### Claim 15 (depends on 11) The radiation image capturing apparatus according to claim 11, wherein the hardware processor is able to change a radiation detecting threshold to determine whether the radiation is irradiated according to the calculated result. ### Claim 16 (depends on 11) The radiation image capturing apparatus according to claim 11, wherein: the hardware processor compares a signal value of a calculated result with a predetermined threshold for each predetermined term, the hardware processor discontinues the detection operation when it is determined that at least some of the signal values are equal to or more than the threshold while the detection operation is performed, the hardware processor resumes the detection operation when it is determined that all of the signal values are less than the threshold while the detection operation is discontinued. ### Claim 17 (depends on 16) The radiation image capturing apparatus according to claim 16, wherein the threshold used for comparison with the signal value during the detection operation is larger than the threshold used for comparison with the signal value during the discontinuation of the detection operation. ### Claim 18 (depends on 11) The radiation image capturing apparatus according to claim 11, wherein the hardware processor notifies the user that there is a disturbance source nearby when it is determined that the radiation image capturing apparatus is placed under the disturbance environment. ### Claim 19 (depends on 11) A radiation image capturing system comprising: the radiation image capturing apparatus according to claim 11; and a radiation irradiating apparatus which irradiates radiation to the radiation image capturing apparatus. ### Claim 20 (depends on 11) The radiation image capturing apparatus according to claim 11, wherein the disturbance environment is due to electromagnetic radiation.