Patents Assigned to Oy Ajat LTD
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Publication number: 20220018978Abstract: Some embodiments include an imaging system comprising a detector substrate, at least one detector circuit comprising a capacitor coupled with the detector substrate, the capacitor arranged to collect an electrical charge from the detector substrate, and the imaging system further comprises at least one programmable current source, arranged to provide a neutralizing charge to the capacitor, and the imaging system is configured to select a value for the neutralizing charge in dependence of a frame number.Type: ApplicationFiled: November 28, 2019Publication date: January 20, 2022Applicant: OY AJAT LTD.Inventors: Tuomas Pantsar, Jouni Pyyhtiä, Dimitrios Chatzistratis, Gerasimos Theodoratos, Yannis Glikiotis, Teemu Pitkänen
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Patent number: 9772410Abstract: A high pixel density intraoral x-ray imaging sensor includes a direct conversion, fully depleted silicon detector bump bonded to a readout CMOS substrate by cu-pillar bump bonds.Type: GrantFiled: February 26, 2016Date of Patent: September 26, 2017Assignee: OY AJAT LTD.Inventors: Konstantinos Spartiotis, Henri Tapio Nykanen, Limin Lin, Tuomas Heikki Elmeri Lahtinen, Pasi Juhani Laukka
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Patent number: 9332950Abstract: A radiation imaging device includes plural individual detectors defining an irregular rectangular active area responsive to x-rays and with different widths along a length of the active area. The individual detectors may be of different rectangular shapes and mounted on a motherboard. The motherboard may be formed of a first module mounting a first of two individual detectors and a second module detachable connected to the first module and mounting a second of two individual detectors.Type: GrantFiled: January 26, 2015Date of Patent: May 10, 2016Assignee: OY AJAT LTD.Inventors: Konstantinos Spartiotis, Tom Schulman, Tuomas Pantsar
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Patent number: 9329284Abstract: A high pixel density intraoral x-ray imaging sensor includes a direct conversion, fully depleted silicon detector bump bonded to a readout CMOS substrate by cu-pillar bump bonds.Type: GrantFiled: March 24, 2015Date of Patent: May 3, 2016Assignee: OY AJAT LTD.Inventors: Konstantinos Spartiotis, Henri Tapio Nykanen, Limin Lin, Tuomas Heikki Elmeri Lahtinen, Pasi Juhani Laukka
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Patent number: 9310495Abstract: An photon (energy) identifying radiation imaging device, for imaging x-ray, gamma ray and charged radiation in medical, dental and industrial applications. The imaging device includes a detector substrate and a readout substrate. The detector substrate has a plurality of detector pixels and the readout substrate has a plurality of corresponding pixel readout circuits. Each pixel readout circuit has circuitry for processing an input analog signal and also has one or more buffers for temporarily storing values corresponding to the signal of at least two individual incoming radiation events. The readout substrate includes a digital controller having digital processing units for carrying out off-pixel digital signal processing and data/rate reduction prior to readout.Type: GrantFiled: January 3, 2012Date of Patent: April 12, 2016Assignee: OY AJAT LTD.Inventors: Konstantinos Spartiotis, Tuomas Pantsar, Charalampos Lampropoulos, Theofanis Orfanoudakis
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Patent number: 9050039Abstract: A radiation imaging device includes plural individual detectors defining an irregular rectangular active area responsive to x-rays and with different widths along a length of the active area. The individual detectors may be of different rectangular shapes and mounted on a motherboard. The motherboard may be formed of a first module mounting a first of two individual detectors and a second module detachable connected to the first module and mounting a second of two individual detectors.Type: GrantFiled: September 11, 2012Date of Patent: June 9, 2015Assignee: OY AJAT LTD.Inventors: Konstantinos Spartiotis, Tom Schulman, Tuomas Pantsar
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Patent number: 8850697Abstract: An automatic or semiautomatic method of assembly of radiation digital imaging tiles to form a one or two dimensional imaging panel whereby the imaging tiles are provided with alignment mark(s), inherent or specific, and a mother board or substrate is also provide with alignment mark(s) and the imaging tiles are mounted on the mother board by means of mechanical pick and place mechanism, whereby the distances of corresponding alignment mark are set to predetermined values, programmed in the automatic machine.Type: GrantFiled: December 23, 2011Date of Patent: October 7, 2014Assignee: Oy AJAT LtdInventors: Konstantinos Spartiotis, Pasi Laukka
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Patent number: 8693624Abstract: An extra-oral digital panoramic dental x-ray imaging system for multi-layer panoramic and transverse X-ray imaging providing with an X-ray source and a digital imaging device providing real time frame mode output and autofocusing. The X-ray source and imaging device are mounted in a mechanical manipulator defining the trajectory of a predetermined image layer. The imaging device communicates with a processor that generates a frames memory from which an image reconstruction mechanism composes the final images.Type: GrantFiled: August 12, 2013Date of Patent: April 8, 2014Assignee: Oy AJAT Ltd.Inventors: Konstantinos Spartiotis, Tuomas Pantsar
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Publication number: 20130329854Abstract: An extra-oral digital panoramic dental x-ray imaging system for multi-layer panoramic and transverse X-ray imaging providing with an X-ray source and a digital imaging device providing real time frame mode output and autofocusing. The X-ray source and imaging device are mounted in a mechanical manipulator defining the trajectory of a predetermined image layer. The imaging device communicates with a processor that generates a frames memory from which an image reconstruction mechanism composes the final images.Type: ApplicationFiled: August 12, 2013Publication date: December 12, 2013Applicant: OY AJAT, LTD.Inventors: KONSTANTINOS SPARTIOTIS, TUOMAS PANTSAR
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Patent number: 8530850Abstract: A calibrated real-time, high energy X-ray imaging system is disclosed which incorporates a direct radiation conversion, X-ray imaging camera and a high speed image processing module. The high energy imaging camera utilizes a Cd—Te or a Cd—Zn—Te direct conversion detector substrate. The image processor includes a software driven calibration module that uses an algorithm to analyze time dependent raw digital pixel data to provide a time related series of correction factors for each pixel in an image frame. Additionally, the image processor includes a high speed image frame processing module capable of generating image frames at frame readout rates of greater than ten frames per second to over 100 frames per second. The image processor can provide normalized image frames in real-time or can accumulate static frame data for substantially very long periods of time without the typical concomitant degradation of the signal-to-noise ratio.Type: GrantFiled: September 14, 2005Date of Patent: September 10, 2013Assignee: Oy AJAT LtdInventors: Konstantinos Spartiotis, Tuomas Pantsar
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Patent number: 8532254Abstract: An extra-oral digital panoramic dental x-ray imaging system for multi-layer panoramic and transverse X-ray imaging providing with an X-ray source and a digital imaging device providing real time frame mode output and autofocusing. The X-ray source and imaging device are mounted in a mechanical manipulator defining the trajectory of a predetermined image layer. The imaging device communicates with a processor that generates a frames memory from which an image reconstruction mechanism composes the final images.Type: GrantFiled: April 28, 2010Date of Patent: September 10, 2013Assignee: Oy AJAT LtdInventors: Tuomas Pantsar, Konstantinos Spartiotis
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Publication number: 20130003921Abstract: A radiation imaging device includes plural individual detectors defining an irregular rectangular active area responsive to x-rays and with different widths along a length of the active area. The individual detectors may be of different rectangular shapes and mounted on a motherboard. The motherboard may be formed of a first module mounting a first of two individual detectors and a second module detachable connected to the first module and mounting a second of two individual detectors.Type: ApplicationFiled: September 11, 2012Publication date: January 3, 2013Applicant: OY AJAT LTD.Inventors: KONSTANTINOS SPARTIOTIS, TOM SCHULMAN, TUOMAS PANTSAR
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Publication number: 20120280131Abstract: An photon (energy) identifying radiation imaging device, for imaging x-ray, gamma ray and charged radiation in medical, dental and industrial applications. The imaging device includes a detector substrate and a readout substrate. The detector substrate has a plurality of detector pixels and the readout substrate has a plurality of corresponding pixel readout circuits. Each pixel readout circuit has circuitry for processing an input analog signal and also has one or more buffers for temporarily storing values corresponding to the signal of at least two individual incoming radiation events. The readout substrate includes a digital controller having digital processing units for carrying out off-pixel digital signal processing and data/rate reduction prior to readout.Type: ApplicationFiled: January 3, 2012Publication date: November 8, 2012Applicant: OY AJAT LTD.Inventors: Konstantinos SPARTIOTIS, Tuomas PANTSAR, Charalampos LAMBROPOULOS, Theofanis ORPHANOUDAKIS
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Patent number: 8306181Abstract: A multi-functional dental extra-oral x-ray imaging system includes a conventional x-ray source and manipulator to control the movement of the x-ray source by translating and rotating, a real time multiple frame producing x-ray imaging device and at least two different exposure profile programs, whereas one of such profiles produces a standard panoramic image and a second of such profiles produces an angled or transverse slice to a the panoramic image. A third exposure profile program produces a substantially linear projection of the human skull by combining two linear projections, one for the right and one for the left part of the head. The sensor is a linear direct conversion operating preferably in the frame mode and producing more than 100 fps.Type: GrantFiled: July 28, 2009Date of Patent: November 6, 2012Assignee: Oy AJAT LtdInventors: Konstantinos Spartiotis, Tuomas Pantsar, Henrik Viking Lohman
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Patent number: 8295432Abstract: A radiation imaging device includes plural individual detectors defining an irregular rectangular active area responsive to x-rays and with different widths along a length of the active area. The individual detectors may be of different rectangular shapes and mounted on a motherboard. The motherboard may be formed of a first module mounting a first of two individual detectors and a second module detachable connected to the first module and mounting a second of two individual detectors.Type: GrantFiled: May 3, 2010Date of Patent: October 23, 2012Assignee: Oy AJAT LtdInventors: Konstantinos Spartiotis, Tom Schulman, Tuomas Pantsar
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Publication number: 20120090171Abstract: An automatic or semiautomatic method of assembly of radiation digital imaging tiles to form a one or two dimensional imaging panel whereby the imaging tiles are provided with alignment mark(s), inherent or specific, and a mother board or substrate is also provide with alignment mark(s) and the imaging tiles are mounted on the mother board by means of mechanical pick and place mechanism, whereby the distances of corresponding alignment mark are set to predetermined values, programmed in the automatic machine.Type: ApplicationFiled: December 23, 2011Publication date: April 19, 2012Applicant: OY AJAT, LTDInventors: Konstantinos SPARTIOTIS, Pasi LAUKKA
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Patent number: 8117741Abstract: An automatic or semiautomatic method of assembly of radiation digital imaging tiles to form a one or two dimensional imaging panel whereby the imaging tiles are provided with alignment mark(s), inherent or specific, and a mother board or substrate is also provide with alignment mark(s) and the imaging tiles are mounted on the mother board by means of mechanical pick and place mechanism, whereby the distances of corresponding alignment mark are set to predetermined values, programmed in the automatic machine.Type: GrantFiled: April 7, 2009Date of Patent: February 21, 2012Assignee: Oy AJAT LtdInventors: Konstantinos Spartiotis, Pasi Laukka
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Patent number: 7916833Abstract: An extra-oral digital panoramic dental x-ray imaging system for multi-layer panoramic and transverse X-ray imaging provided with an X-ray source and a digital imaging device providing real time frame mode output and autofocusing. The X-ray source and imaging device are mounted in a mechanical manipulator defining the trajectory of a predetermined image layer. The imaging device communicates with a processor that generates a frames memory from which an image reconstruction mechanism composes the final images.Type: GrantFiled: November 6, 2009Date of Patent: March 29, 2011Assignee: Oy Ajat Ltd.Inventors: Tuomas Pantsar, Konstantinos Spartiotis
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Publication number: 20100246761Abstract: An extra-oral digital panoramic dental x-ray imaging system for multi-layer panoramic and transverse X-ray imaging providing with an X-ray source and a digital imaging device providing real time frame mode output and autofocusing. The X-ray source and imaging device are mounted in a mechanical manipulator defining the trajectory of a predetermined image layer. The imaging device communicates with a processor that generates a frames memory from which an image reconstruction mechanism composes the final images.Type: ApplicationFiled: April 28, 2010Publication date: September 30, 2010Applicant: OY AJAT, LTD.Inventors: TUOMAS PANTSAR, KONSTANTINOS SPARTIOTIS
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Publication number: 20100208866Abstract: A radiation imaging device includes plural individual detectors defining an irregular rectangular active area responsive to x-rays and with different widths along a length of the active area. The individual detectors may be of different rectangular shapes and mounted on a motherboard. The motherboard may be formed of a first module mounting a first of two individual detectors and a second module detachable connected to the first module and mounting a second of two individual detectors.Type: ApplicationFiled: May 3, 2010Publication date: August 19, 2010Applicant: OY AJAT LTD.Inventors: Konstantinos Spartiotis, Tom Schulman, Tuomas Pantsar