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AssigneeSimage Oy
InventorsRisto Olavi Orava, Jouni Ilari Pyyhtia, Tom Gunnar Schulman, Miltiadis Evangelos Sarakinos, Konstantinos Evangelos Spartiotis
Estimating the term…
An imaging device comprises a semiconductor substrate including an array of pixel cells. Each pixel cell comprising an individually addressable pixel circuit for accumulating charge resulting from radiation incident on a pixel detector. The pixel circuit and the pixel detector can either be implemented on a single substrate, or on two substrates bonded together. The charge storage device can be a transistor, for example one of a pair of FET transistors connected as a cascade amplification stage. An imaging plane can be made up of one imaging device or a plurality of imaging devices tiled to form a mosaic. The imaging devices may be configured as a slot for certain applications, the slit or slot being scanned over the imaging plane. Control electronics can include addressing logic for addressing individual pixel circuits for reading accumulated charge from the pixel circuits. Imaging optimization can be achieved by determining maximum and minimum charge values for pixels for display, assigning extreme grey scale or colour values to the maximum and minimum charge values and allocating grey scale or colour values to an individual pixel according to a sliding scale between the extreme values. Scattered radiation can be detected and discarded by comparing the detected pixel value to a threshold value related to a minimum detected charge value expected for directly incident radiation and discarding detected pixel values less than said threshold value.
A high-energy radiation imaging system comprising a plurality of high-energy radiation, direct-conversion imaging devices arranged in a plurality of columns, said plurality of columns being tiled together to form a mosaic, with imaging devices in adjacent columns being offset from one another in a columnar direction, each imaging device in the plurality of direct conversion imaging devices comprising a two-dimensional array of pixels that are integrally formed on each imaging device in the plurality of imaging devices.
A high-energy radiation imaging system comprising a plurality of semiconductor high-energy radiation, direct-conversion imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising an array of pixel cells including a two-dimensional array of pixel detectors which are integrally formed on each of said plurality of imaging devices, and directly generate charge in response to incident high-energy radiation, and a corresponding array of individually addressable pixel circuits, each pixel circuit being associated with a respective pixel detector for reading out charge directly resulting from radiation incident on said pixel detector and comprising:
A high-energy radiation imaging system comprising a plurality of semiconductor high-energy radiation, direct-conversion imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising an array of pixel cells including a two-dimensional array of pixel detectors which are integrally formed on each of said plurality of imaging devices, and directly generate charge in response to incident high-energy radiation, and a corresponding array of individually addressable pixel circuits, each pixel circuit being associated with a respective pixel detector for reading out charge directly resulting from radiation incident on said pixel detector and comprising charge read out circuitry connected to said respective pixel detector for reading out charge directly resulting from radiation incident on said respective pixel detector, said pixel circuit outputting said charge as a current value.
A method for imaging charge values corresponding to respective pixel positions of a high-energy imaging system including a plurality of high-energy radiation, direct conversion imaging devices arranged in a plurality of columns, the plurality of columns being tiled together to form a mosaic, each of the imaging devices in the plurality of imaging devices comprising a two-dimensional array of pixels integrally formed on each imaging device in the plurality of imaging devices, with imaging devices in adjacent columns being offset from one another in a columnar direction, said method comprising the steps of:
A method for imaging charge values corresponding to respective pixel positions of an imaging system including a plurality of high-energy radiation, direct conversion imaging devices arranged in a plurality of columns, each imaging device in the plurality of imaging devices comprising a two-dimensional array of pixels integrally formed on each imaging device in the plurality of imaging devices, the plurality of columns being tiled together to form a mosaic, with imaging devices in adjacent columns being offset from one another in a columnar direction, said method comprising the steps of:
A high-energy radiation imaging system comprising a plurality of high-energy radiation, direct conversion imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising an array of pixel cells including a two-dimensional array of pixel detectors which are integrally formed on each of said plurality of imaging devices, and directly generate charge in response to incident high-energy radiation, and a corresponding array of individually addressable pixel circuits, each pixel circuit being associated with a respective pixel detector for reading out charge directly resulting from radiation incident on said pixel detector and comprising charge read out circuitry connected to said respective pixel detector, each of said plurality of imaging devices further comprising an image output coupled to a common multiplexer having an output coupled to an analog-to-digital converter.
A method of performing real-time imaging of an object using an imaging system including a plurality of high-energy radiation, direct conversion imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising an array of pixel cells including a two-dimensional array of pixel detectors integrally formed on each of said plurality of imaging devices which directly generate charge in response to incident radiation and a corresponding array of individually addressable pixel circuits, each pixel circuit being associated with a respective pixel detector for reading out charge directly resulting from radiation incident on said pixel detector and having charge read out circuitry connected to said respective pixel detector, and each of said plurality of imaging devices further comprising an image output coupled to a common multiplexer having an output coupled to an analog-to-digital converter, said method comprising the steps of:
A high-energy radiation imaging system comprising a plurality of high-energy radiation, direct conversion imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising an array of pixel cells and an image output, said array of pixel cells including a two-dimensional array of pixel detectors, which are integrally formed on each of said plurality of imaging devices, and directly generate charge in response to incident high-energy radiation, and a corresponding array of individually addressable pixel circuits, each of said pixel circuits being associated with a respective pixel detector for reading out charge directly resulting from radiation incident on said pixel detector and comprising charge read out circuitry connected to said respective pixel detector, said image outputs being daisy-chained to a common analog-to-digital converter.
A method of performing real-time imaging of an object using an imaging system including a plurality of imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising an array of pixel cells and an image output, said array of pixel cells including a two-dimensional array of pixel detectors which are integrally formed on each of said plurality of imaging devices, and directly generate charge in response to incident high-energy radiation, and a corresponding array of individually addressable pixel circuits, each pixel circuit being associated with a respective pixel detector for reading out charge directly resulting from radiation incident on said pixel detector and comprises charge read out circuitry connected to said respective pixel detector, and said image outputs being daisy-chained to a common analog-to-digital converter, said method comprising the steps of:
A high-energy radiation imaging system comprising a plurality of high-energy radiation, direct-conversion semiconductor radiation imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising:
A high-energy radiation imaging system comprising a plurality of semiconductor high-energy radiation, direct-conversion imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising an array of pixel cells including a two-dimensional array of pixel detectors which are integrally formed on each of said plurality of imaging devices, and directly generate charge in response to incident high-energy radiations and a corresponding array of individually addressable pixel circuits, each pixel circuit being associated with a respective pixel detector for accumulating charge directly resulting from radiation incident on said pixel detector and comprising:
A high-energy radiation imaging system comprising a plurality of semiconductor high-energy radiation, direct-conversion imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising an array of pixel cells including a two-dimensional array of pixel detectors which are integrally formed on each of said plurality of imaging devices, and directly generate charge in response to incident high-energy radiations and a corresponding array of individually addressable pixel circuits, each pixel circuit being associated with a respective pixel detector for accumulating charge directly resulting from radiation incident on said pixel detector and comprising charge accumulation circuitry connected to said respective pixel detector for accumulating charge directly resulting from radiation incident on said respective pixel detector, said pixel circuit outputting said accumulated charge as a current value.
A method for imaging accumulated charge values corresponding to respective pixel positions of a high-energy imaging system including a plurality of high-energy radiation, direct conversion imaging devices arranged in a plurality of columns, the plurality of columns being tiled together to form a mosaic, each of the imaging devices in the plurality of imaging devices comprising a two-dimensional array of pixels integrally formed on each imaging device in the plurality of imaging devices, with imaging devices in adjacent columns being offset from one another in a columnar direction, said method comprising the steps of:
A method for imaging accumulated charge values corresponding to respective pixel positions of an imaging system including a plurality of high-energy radiation, direct conversion imaging devices arranged in a plurality of columns, each imaging device in the plurality of imaging devices comprising a two-dimensional array of pixels integrally formed on each imaging device in the plurality of imaging devices, the plurality of columns being tiled together to form a mosaic, with imaging devices in adjacent columns being offset from one another in a columnar direction, said method comprising the steps of:
A high-energy radiation imaging system comprising a plurality of high-energy radiation, direct conversion imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising an array of pixel cells including a two-dimensional array of pixel detectors which are integrally formed on each of said plurality of imaging devices, and directly generate charge in response to incident high-energy radiation, and a corresponding array of individually addressable pixel circuits, each pixel circuit being associated with a respective pixel detector for accumulating charge directly resulting from radiation incident on said pixel detector and comprising charge accumulation circuitry connected to said respective pixel detector, each of said plurality of imaging devices further comprising an image output coupled to a common multiplexer having an output coupled to an analog-to-digital converter.
A method of performing real-time imaging of an object using an imaging system including a plurality of high-energy radiation, direct conversion imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising an array of pixel cells including a two-dimensional array of pixel detectors integrally formed on each of said plurality of imaging devices which directly generate charge in response to incident radiation and a corresponding array of individually addressable pixel circuits, each pixel circuit being associated with a respective pixel detector for accumulating charge directly resulting from radiation incident on said pixel detector and having charge accumulation circuitry connected to said respective pixel detector, and each of said plurality of imaging devices further comprising an image output coupled to a common multiplexer having an output coupled to an analog-to-digital converter, said method comprising the steps of:
A high-energy radiation imaging system comprising a plurality of high-energy radiation, direct conversion imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising an array of pixel cells and an image output, said array of pixel cells including a two-dimensional array of pixel detectors, which are integrally formed on each of said plurality of imaging devices, and directly generate charge in response to incident high-energy radiation, and a corresponding array of individually addressable pixel circuits, each of said pixel circuits being associated with a respective pixel detector for accumulating charge directly resulting from radiation incident on said pixel detector and comprising charge accumulation circuitry connected to said respective pixel detector, said image outputs being daisy-chained to a common analog-to-digital converter.
A method of performing real-time imaging of an object using an imaging system including a plurality of imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising an array of pixel cells and an image output, said array of pixel cells including a two-dimensional array of pixel detectors which are integrally formed on each of said plurality of imaging devices, and directly generate charge in response to incident high-energy radiation, and a corresponding array of individually addressable pixel circuits, each pixel circuit being associated with a respective pixel detector for accumulating charge directly resulting from radiation incident on said pixel detector and comprises charge accumulation circuitry connected to said respective pixel detector, and said image outputs being daisy-chained to a common analog-to-digital converter, said method comprising the steps of:
A high-energy radiation imaging system comprising a plurality of high-energy radiation, direct-conversion semiconductor radiation imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising:
A high-energy radiation imaging system comprising a plurality of semiconductor high-energy radiation, direct-conversion imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising an array of pixel cells including a two-dimensional array of pixel detectors which are integrally formed on each of said plurality of imaging devices, and directly generate charge in response to incident high-energy radiation, and a corresponding array of individually addressable pixel circuits, each pixel circuit being associated with a respective pixel detector for processing charge directly resulting from radiation incident on said pixel detector and comprising:
A high-energy radiation imaging system comprising a plurality of semiconductor high-energy radiation, direct-conversion imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising an array of pixel cells including a two-dimensional array of pixel detectors which are integrally formed on each of said plurality of imaging devices, and directly generate charge in response to incident high-energy radiation, and a corresponding array of individually addressable pixel circuits, each pixel circuit being associated with a respective pixel detector for processing charge directly resulting from radiation incident on said pixel detector and comprising charge processing circuitry connected to said respective pixel detector for processing charge directly resulting from radiation incident on said respective pixel detector, said pixel circuit outputting said processed charge as a current value.
A method for imaging charge values corresponding to respective pixel positions of a high-energy imaging system including a plurality of high-energy radiation, direct conversion imaging devices arranged in a plurality of columns, the plurality of columns being tiled together to form a mosaic, each of the imaging devices in the plurality of imaging devices comprising a two-dimensional array of pixels integrally formed on each imaging device in the plurality of imaging devices, with imaging devices in adjacent columns being offset from one another in a columnar direction, said method comprising the steps of:
A method for imaging charge values corresponding to respective pixel positions of an imaging system including a plurality of high-energy radiation, direct conversion imaging devices arranged in a plurality of columns, each imaging device in the plurality of imaging devices comprising a two-dimensional array of pixels integrally formed on each imaging device in the plurality of imaging devices, the plurality of columns being tiled together to form a mosaic, with imaging devices in adjacent columns being offset from one another in a columnar direction, said method comprising the steps of:
A high-energy radiation imaging system comprising a plurality of high-energy radiation, direct conversion imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising an array of pixel cells including a two-dimensional array of pixel detectors which are integrally formed on each of said plurality of imaging devices, and directly generate charge in response to incident high-energy radiation, and a corresponding array of individually addressable pixel circuits, each pixel circuit being associated with a respective pixel detector for processing charge directly resulting from radiation incident on said pixel detector and comprising charge processing circuitry connected to said respective pixel detector, each of said plurality of imaging devices further comprising an image output coupled to a common multiplexer having an output coupled to an analog-to-digital converter.
A method of performing real-time imaging of an object using an imaging system including a plurality of high-energy radiation, direct conversion imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising an array of pixel cells including a two-dimensional array of pixel detectors integrally formed on each of said plurality of imaging devices which directly generate charge in response to incident radiation and a corresponding array of individually addressable pixel circuits, each pixel circuit being associated with a respective pixel detector for processing charge directly resulting from radiation incident on said pixel detector and having charge processing circuitry connected to said respective pixel detector, and each of said plurality of imaging devices further comprising an image output coupled to a common multiplexer having an output coupled to an analog-to-digital converter, said method comprising the steps of:
A high-energy radiation imaging system comprising a plurality of high-energy radiation, direct conversion imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising an array of pixel cells and an image output, said array of pixel cells including a two-dimensional array of pixel detectors, which are integrally formed on each of said plurality of imaging devices, and directly generate charge in response to incident high-energy radiation, and a corresponding array of individually addressable pixel circuits, each of said pixel circuits being associated with a respective pixel detector for processing charge directly resulting from radiation incident on said pixel detector and comprising charge processing circuitry connected to said respective pixel detector, said image outputs being daisy-chained to a common analog-to-digital converter.
A method of performing real-time imaging of an object using an imaging system including a plurality of imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising an array of pixel cells and an image output, said array of pixel cells including a two-dimensional array of pixel detectors which are integrally formed on each of said plurality of imaging devices, and directly generate charge in response to incident high-energy radiation, and a corresponding array of individually addressable pixel circuits, each pixel circuit being associated with a respective pixel detector for processing charge directly resulting from radiation incident on said pixel detector and comprises charge processing circuitry connected to said respective pixel detector, and said image outputs being daisy-chained to a common analog-to-digital converter, said method comprising the steps of:
A high-energy radiation imaging system comprising a plurality of high-energy radiation, direct-conversion semiconductor radiation imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising:
Dependencies are inferred from the claim text.