Patents by Inventor Euan Christopher Smith
Euan Christopher Smith has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11825222Abstract: A method of chromatically-corrected image demosaicing for a sensor with a colour filter array (CFA) such as a Bayer filter array. The demosaicing makes use of local chromatic aberration correction data to determine chromatically-corrected pixel positions for spatial interpolation. In implementations a chromatically-corrected quadratic adjustment is also applied.Type: GrantFiled: June 26, 2020Date of Patent: November 21, 2023Assignee: Plantronics, Inc.Inventors: Gareth John McCaughan, Euan Christopher Smith
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Patent number: 11729165Abstract: A method of distributed authorization of one or more client applications to one or more connected devices. The method comprises: receiving at a connected device, from a browser executing a client application, a client token and an access request.Type: GrantFiled: November 19, 2018Date of Patent: August 15, 2023Assignee: Plantronics, Inc.Inventors: Euan Christopher Smith, Julian Hall
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Patent number: 11494882Abstract: An image capture system comprises a camera configured to capture an image of a whiteboard, or similar, viewed from an acute angle. A linear polarizer has a surface substantially perpendicular to a plane of the board and an axis of polarization substantially perpendicular to the plane of the board or within 30° of the perpendicular to the plane of the board. The camera is configured to capture the image of the board through the polarizer. A normal to the polarizer is directed in a different direction to a direction defined by an optic axis of the camera.Type: GrantFiled: December 10, 2019Date of Patent: November 8, 2022Assignee: Poly Communications International Unlimited CompanyInventors: Raul Benet Ballester, Eyal Katz, Barak Maoz, Adrian James Cable, Euan Christopher Smith, Gareth John McCaughan, Shane Thornton
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Publication number: 20220247987Abstract: A method of chromatically-corrected image demosaicing for a sensor with a colour filter array (CFA) such as a Bayer filter array. The demosaicing makes use of local chromatic aberration correction data to determine chromatically-corrected pixel positions for spatial interpolation. In implementations a chromatically-corrected quadratic adjustment is also applied.Type: ApplicationFiled: June 26, 2020Publication date: August 4, 2022Inventors: Gareth John MCCAUGHAN, Euan Christopher SMITH
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Publication number: 20210176247Abstract: A method of distributed authorization of one or more client applications to one or more connected devices. The method comprises: receiving at a connected device, from a browser executing a client application, a client token and an access request.Type: ApplicationFiled: November 19, 2018Publication date: June 10, 2021Inventors: Euan Christopher SMITH, Julian HALL
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Patent number: 10839494Abstract: Various approaches related to capturing content of erasable boards are discussed herein.Type: GrantFiled: December 4, 2017Date of Patent: November 17, 2020Assignee: Light Blue Optics LtdInventors: Gareth John McCaughan, Euan Christopher Smith, Raul John Benet Ballester, Nicholas John Hollinghurst
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Publication number: 20200134788Abstract: An image capture system comprises a camera configured to capture an image of a whiteboard, or similar, viewed from an acute angle. A linear polarizer has a surface substantially perpendicular to a plane of the board and an axis of polarization substantially perpendicular to the plane of the board or within 30° of the perpendicular to the plane of the board. The camera is configured to capture the image of the board through the polarizer. A normal to the polarizer is directed in a different direction to a direction defined by an optic axis of the camera.Type: ApplicationFiled: December 10, 2019Publication date: April 30, 2020Inventors: Raul BENET BALLESTER, Eyal KATZ, Barak MAOZ, Adrian James CABLE, Euan Christopher SMITH, Gareth John MCCAUGHAN, Shane THORNTON
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Patent number: 10540755Abstract: A method of capturing writing or drawing on a whiteboard comprises inputting camera data for a succession of image frames of the whiteboard, and processing data from said image frames to remove parts of the image frames corresponding to parts of a user or user pen writing or drawing on the whiteboard. The processing involves filtering to distinguish between i) motion of the user/user pen parts in the image frames, and ii) writing/drawing image information in the image frames which appears or changes during said writing or drawing but which is thereafter substantially unchanging. The filtered data defines captured writing or drawing from the whiteboard.Type: GrantFiled: February 12, 2016Date of Patent: January 21, 2020Assignee: Light Blue Optics Ltd.Inventors: Raul Benet Ballester, Eyal Katz, Barak Maoz, Adrian James Cable, Euan Christopher Smith, Gareth John McCaughan, Shane Thornton
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Patent number: 10303305Abstract: Various approaches to touch sensing systems are disclosed As an example, a touch sensing system is disclosed that includes: an optical beam source to provide an optical beam; a pair of controllable beam deflectors comprising at least first and second beam deflectors, wherein the first beam deflector is configured to deflect the optical beam through a first angle towards a touch sensing region, and wherein the second beam deflector is configured to deflect scattered light from an object in the touch sensing region through a second angle; a detector, in particular a detector array; and an imaging system to image the deflected scattered light from the second beam deflector onto the detector array. The first and second beam deflectors are controlled in tandem to scan the touch sensing region.Type: GrantFiled: August 13, 2013Date of Patent: May 28, 2019Assignee: Light Blue Optics Ltd.Inventors: Adrian James Cable, Paul Richard Routley, Euan Christopher Smith, Gareth John McCaughan, Peter William Tudor Mash
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Publication number: 20180108121Abstract: Various approaches related to capturing content of erasable boards are discussed herein.Type: ApplicationFiled: December 4, 2017Publication date: April 19, 2018Inventors: Gareth John McCaughan, Euan Christopher Smith, Raul John Benet Ballester, Nicholas John Hollinghurst
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Publication number: 20180040111Abstract: We describe a method of capturing writing or drawing on a whiteboard. The method comprises: inputting camera data for a succession of image frames, wherein the camera data is from a camera directed towards the whiteboard and the image frames comprise successive images of the whiteboard from the camera; and user filter processing data from said image frames to remove parts of said image frames corresponding to parts of a user or user pen writing or drawing on said whiteboard. The user-filter processing comprises filtering to distinguish between motion of the user/user pen parts in the image frames and writing/drawing image information in the image frames which appears or changes during said writing or drawing but which is thereafter substantially unchanging. The method outputs writing/drawing data from the user filter-processing, this defining captured writing or drawing from the whiteboard.Type: ApplicationFiled: February 12, 2016Publication date: February 8, 2018Applicant: Light Blue Optics Ltd.Inventors: Raul BENET BALLESTER, Eyal KATZ, Barak MAOZ, Adrian James CABLE, Euan Christopher SMITH, Gareth John MCCAUGHAN, Shane Thornton
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Patent number: 9886105Abstract: We describe a touch sensing system projecting light defining a touch sheet above a surface and a camera to capture a touch image of light scattered by a pen intersecting the touch sheet. A signal processor identifies a lateral location of the pen. The pen includes a light source to provide a light signal, and the system also includes two photodiodes to detect the signal from the pen. The touch detection is augmented by modelling the signals received at the photodiodes, dependent on the distance and angle of a pen, and using this to derive a probability of the observed received signals given the pen location determined from the touch sheet. This information can be used, for example, to allocate identities to the pens.Type: GrantFiled: December 19, 2014Date of Patent: February 6, 2018Assignee: Promethean LimitedInventors: Gareth John McCaughan, Paul Richard Routley, Euan Christopher Smith, Lilian Lacoste, Julian Hall, Adrian James Cable
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Patent number: 9524061Abstract: We describe a touch sensitive image display device including: an image projector to project a displayed image onto a surface; a touch sensor light source to project a plane of light above the displayed image; a camera to capture a touch sense image from light scattered from the plane of light by an approaching object; and a signal processor to process the touch sense image to identify a location of the object. The touch sensor light source is amplitude modulated, and signal processor is further configured to process a plurality of the touch sense images captured when the touch sensor light source is off to compensate for ambient light in a touch sense image captured when the touch sensor light source is on.Type: GrantFiled: June 15, 2012Date of Patent: December 20, 2016Assignee: Promethean LimitedInventors: Gareth John McCaughan, Paul Richard Routley, John Andrew, Euan Christopher Smith, Peter William Tudor Mash
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Patent number: 9298320Abstract: A touch sensitive device, the device comprising: a touch sensor light source to project a plane of light above a surface; a camera directed to capture a touch sense image from a region including at least a portion of said plane of light, said touch sense image comprising light scattered from said plane of light by a plurality of said objects simultaneously approaching or touching said surface; a signal processor coupled to said camera, to process a said touch sense image from said camera to identify a lateral location of each of said objects; and an output object position output, to provide output object positions for said plurality of objects; and wherein said signal processor is further configured to: input a succession of said touch sense images; process each said touch sense image to identify a plurality of candidate object touch positions; and filter said candidate object touch positions from said successive touch sense images to link said candidate object touch positions to previously identified outputType: GrantFiled: June 15, 2012Date of Patent: March 29, 2016Assignee: Promethean LimitedInventors: Gareth John McCaughan, Paul Richard Routley, John Andrew, Euan Christopher Smith, Adrian J. Cable
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Publication number: 20150248189Abstract: We describe a touch sensing system comprising a light source to project light defining a touch sheet above a surface; a camera directed to capture a touch sense image from the touch sheet, comprising light scattered by an object; and a signal processor to process the touch sense image to identify a lateral location of the object on the surface. A brightness of the projected light is modulated to define bright, touch detecting intervals and dark intervals. The camera and the light projection are synchronized such that the camera selectively captures scattered light during the touch detecting intervals and rejects ambient light during the dark intervals. The system further comprises a pen. The pen comprises a photodetector to detect the projected light, a first light source detectable by the camera, and a controller coupled to control the first light source such that it is selectively illuminated during touch detecting intervals in synchronism with modulated projected light of the touch sheet.Type: ApplicationFiled: September 12, 2013Publication date: September 3, 2015Applicant: Light Blue Optics Ltd.Inventors: Paul Richard Routley, Euan Christopher Smith, Adrian James Cable
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Publication number: 20150212653Abstract: Various approaches to touch sensing systems are disclosed As an example, a touch sensing system is disclosed that includes: an optical beam source to provide an optical beam; a pair of controllable beam deflectors comprising at least first and second beam deflectors, wherein the first beam deflector is configured to deflect the optical beam through a first angle towards a touch sensing region, and wherein the second beam deflector is configured to deflect scattered light from an object in the touch sensing region through a second angle; a detector, in particular a detector array; and an imaging system to image the deflected scattered light from the second beam deflector onto the detector array. The first and second beam deflectors are controlled in tandem to scan the touch sensing region.Type: ApplicationFiled: August 13, 2013Publication date: July 30, 2015Inventors: Adrian James Cable, Paul Richard, Euan Christopher Smith, Gareth John McCahghan, Peter William Tudor Mash
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Publication number: 20150177861Abstract: We describe a touch sensing system projecting light defining a touch sheet above a surface and a camera to capture a touch image of light scattered by a pen intersecting the touch sheet. A signal processor identifies a lateral location of the pen. The pen includes a light source to provide a light signal, and the system also includes two photodiodes to detect the signal from the pen. The touch detection is augmented by modelling the signals received at the photodiodes, dependent on the distance and angle of a pen, and using this to derive a probability of the observed received signals given the pen location determined from the touch sheet. This information can be used, for example, to allocate identities to the pens.Type: ApplicationFiled: December 19, 2014Publication date: June 25, 2015Inventors: Gareth John McCaughan, Paul Richard Routley, Euan Christopher Smith, Lilian Lacoste, Julian Hall, Adrian James Cable
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Publication number: 20150049063Abstract: A touch sensing system, for sensing the position of at least one object with respect to surface, the system comprising: a first, 2D touch sensing subsystem to detect a first location of said object with respect to a surface and to provide first location data; a second, object position sensing subsystem to detect a second location of said object, wherein said second location of said object is not constrained by said surface, and to provide second location data; a system to associate said first location data and said second location and to determine additional object-related data from said association; and a system to report position data for said object, wherein said position data comprises data dependent on at least one of said first and second locations and on said additional object-related data.Type: ApplicationFiled: March 25, 2013Publication date: February 19, 2015Inventors: Euan Christopher Smith, Paul Richard Routley, Lilian Lacoste
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Publication number: 20140362052Abstract: We describe a touch sensitive image display device. The device comprises: an image projector to project a displayed image onto a surface in front of the device; a touch sensor light source to project light defining a touch sheet above the displayed image; a camera directed to capture a touch sense image comprising light scattered from the touch sheet by an object approaching the displayed image; and a signal processor to process a the touch sense image to identify a location of the object relative to the displayed image. The camera is able to capture an image projected by the image projector, the image projector is configured to project a calibration image, and the device includes a calibration module configured to use a calibration image from the projector, captured by the camera, to calibrate locations in said captured touch sense image with reference to said displayed image.Type: ApplicationFiled: January 17, 2013Publication date: December 11, 2014Inventors: Gareth John McCaughan, Adrian James Cable, Euan Christopher Smith, Paul Richard Routley, Raul Benet Ballester
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Publication number: 20140247249Abstract: Some embodiments of the present invention provide touch sensitive image display devices including: an image projector to project a displayed image onto a surface; a touch sensor light source to project a plane of light above the displayed image; a camera to capture a touch sense image from light scattered from the plane of light by an approaching object; and a signal processor to process the touch sense image to identify a location of the object. The light path to the touch sensor camera includes a keystone-distortion compensating topical element, in particular a convex curved aspherical minor.Type: ApplicationFiled: October 8, 2012Publication date: September 4, 2014Inventors: Euan Christopher Smith, Jonathan Freeman