Patents by Inventor David Powell
David Powell 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: 10845508Abstract: An optical system comprises an optical sensor configured to receive light within one or more bandwidths of interest and an optical stack placed optically in front of the optical sensor. The optical stack comprises a polymeric layer optically transparent to at least the one or more bandwidths of interest, and a matching index layer positioned optically in front of the polymeric layer, the matching index layer and polymeric layer having refractive indexes within a threshold similarity. The optical stack further includes a bumpy diffuse surface embedded between the polymeric layer and the matching index layer, and a partially reflective layer positioned in between the bumpy diffuse surface and the matching index layer, the partially reflective layer configured to at least partially reflect at least some wavelengths outside the one or more bandwidths of interest.Type: GrantFiled: May 31, 2018Date of Patent: November 24, 2020Assignee: Microsoft Technology Licensing, LLCInventor: Karlton David Powell
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Patent number: 10728164Abstract: This application describes client devices that control network transmission based on a power state. The client device determines a power state of the computing device and a priority of an application executing on the computing device. The client device determines whether to permit the application to communicate with a remote network accessible device via the network communication hardware based at least on the priority of the application and the power state of the computing device. Also described is a power state service that selects a client device to be provided with a notification based on power states of the client devices.Type: GrantFiled: February 12, 2016Date of Patent: July 28, 2020Assignee: Microsoft Technology Licensing, LLCInventors: Harish Srinivasan, Chris C. Gray, Javier N. Flores Assad, Benjamin M. Schultz, David Powell, Alvin K. Tan, Jean Khawand
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Patent number: 10725643Abstract: An accessory for a touch-sensitive display includes an image transfer structure and a capacitive marker. The image transfer structure is configured to relay or transfer, above the touch-sensitive display, an optical display plane of an image displayed by the touch-sensitive display. Further, the capacitive marker is capacitively-recognizable by the touch-sensitive display such that the touch-sensitive display visually presents the image in alignment with the image transfer structure.Type: GrantFiled: August 23, 2019Date of Patent: July 28, 2020Assignee: Microsoft Technology Licensing, LLCInventors: Karlton David Powell, Pablo Luis Sala
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Publication number: 20200191650Abstract: A spectrometer for detecting one or more wavelength components of sample radiation is disclosed. The spectrometer includes: a detector comprising a two-dimensional rectilinear array of pixels for generating signals representing an image based on collected sample radiation; one or more optical components arranged to form a spatial pattern based on spectral features of the sample radiation the spatial pattern including a plurality of aligned substantially parallel fringes oriented at a non-zero skew angle to the two-dimensional rectilinear array; and an analyser arranged to receive the signals and provide an output related to the one or more wavelengths. The spectrometer suppresses column/row noise in the detector. Also disclosed is a method of suppressing noise when signals are extracted and processed from detector arrays.Type: ApplicationFiled: June 21, 2018Publication date: June 18, 2020Applicant: Keit LimitedInventors: James Paul Sobol, James David Powell, Jolyon Richard Tidmarsh, David James Edmonds Denny
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Publication number: 20190377486Abstract: An accessory for a touch-sensitive display includes an image transfer structure and a capacitive marker. The image transfer structure is configured to relay or transfer, above the touch-sensitive display, an optical display plane of an image displayed by the touch-sensitive display. Further, the capacitive marker is capacitively-recognizable by the touch-sensitive display such that the touch-sensitive display visually presents the image in alignment with the image transfer structure.Type: ApplicationFiled: August 23, 2019Publication date: December 12, 2019Applicant: Microsoft Technology Licensing, LLCInventors: Karlton David Powell, Pablo Luis Sala
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Publication number: 20190369306Abstract: An optical system comprises an optical sensor configured to receive light within one or more bandwidths of interest and an optical stack placed optically in front of the optical sensor. The optical stack comprises a polymeric layer optically transparent to at least the one or more bandwidths of interest, and a matching index layer positioned optically in front of the polymeric layer, the matching index layer and polymeric layer having refractive indexes within a threshold similarity. The optical stack further includes a bumpy diffuse surface embedded between the polymeric layer and the matching index layer, and a partially reflective layer positioned in between the bumpy diffuse surface and the matching index layer, the partially reflective layer configured to at least partially reflect at least some wavelengths outside the one or more bandwidths of interest.Type: ApplicationFiled: May 31, 2018Publication date: December 5, 2019Applicant: Microsoft Technology Licensing, LLCInventor: Karlton David POWELL
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Publication number: 20190324285Abstract: Examples are disclosed that relate to optical systems. One example provides a display device comprising an image source including a plurality of encoded regions from which encoded image light is output, and a lens array. The lens array may be positioned to receive the encoded image light and output decoded image light that forms a floating image viewable from a plurality of different vantage points, wherein from a first vantage point decoded image light forming a portion of the floating image originates from a first encoded region, and wherein from a second vantage point decoded image light forming the portion originates from a second encoded region, different than the first encoded region.Type: ApplicationFiled: July 3, 2019Publication date: October 24, 2019Applicant: Microsoft Technology Licensing, LLCInventor: Karlton David Powell
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Publication number: 20190323419Abstract: Disclosed is a piston ported two-stroke compression ignition internal combustion engine comprising: a cylinder having a fixed closed end, and a piston for reciprocation within the cylinder, wherein the closed end of the cylinder and the piston together define a combustion chamber therebetween; at least one heater to heat the combustion chamber; and a controller to control the heater to heat the combustion chamber when the controller determines that a temperature of the combustion chamber has fallen below a threshold temperature during reciprocation of the piston within the cylinder.Type: ApplicationFiled: June 27, 2019Publication date: October 24, 2019Inventors: Christian Edward BUCKSEY, Huw David POWELL
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Patent number: 10453563Abstract: A computer-implemented method includes generating a matching rule defined by a user, where the matching rule is a clear text rule, and receiving a transaction message that includes patient data from one or more health care facilities, where the patient data includes one or more patient health care events. A custom extension to a relational database is generated based on the received patient data, and the generated matching rules is applied to the received patient data at the custom extension to the relational database. Related patient event records within the custom extension to the relational database are identified and the related patient event records are configured based on the applied matching rule.Type: GrantFiled: November 14, 2014Date of Patent: October 22, 2019Assignee: IMS Health Technology Services LimitedInventor: David Powell
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Patent number: 10409470Abstract: An accessory for a touch-sensitive display includes an image transfer structure and a capacitive marker. The image transfer structure is configured to relay or transfer, above the touch-sensitive display, an optical display plane of an image displayed by the touch-sensitive display. Further, the capacitive marker is capacitively-recognizable by the touch-sensitive display such that the touch-sensitive display visually presents the image in alignment with the image transfer structure.Type: GrantFiled: September 14, 2016Date of Patent: September 10, 2019Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: Karlton David Powell, Pablo Luis Sala
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Patent number: 10359640Abstract: Examples are disclosed that relate to optical systems. One example provides a display device comprising an image source including a plurality of encoded regions from which encoded image light is output, and a Fourier transform array. The Fourier transform array may be positioned to receive the encoded image light and output decoded image light that forms a floating image viewable from a plurality of different vantage points, wherein from a first vantage point decoded image light forming a portion of the floating image originates from a first encoded region, and wherein from a second vantage point decoded image light forming the portion originates from a second encoded region, different than the first encoded region.Type: GrantFiled: February 9, 2017Date of Patent: July 23, 2019Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventor: Karlton David Powell
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Publication number: 20190157962Abstract: A magnetically geared apparatus comprising: a first rotor; and a stator comprising windings and a first plurality of permanent magnets, the first plurality of permanent magnets being located between the windings and the first rotor; the stator comprising un-magnetised magnetisable material between circumferentially juxtaposed permanent magnets of the first plurality of permanent magnets.Type: ApplicationFiled: January 5, 2017Publication date: May 23, 2019Inventors: David Powell, Gregg Wilson, Ferran Garcia, Radu-Stefan Dragan
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Patent number: 10223952Abstract: An electronic display comprises a display matrix and an image-correcting layer. The display matrix includes a flat face portion, a curved corner portion, a light-releasing surface, and a series of pixels extending across the flat face portion and around the curved corner portion. Coupled to the light-releasing surface of the display matrix, the image-correcting layer is configured to transmit light released from the flat face portion of the display matrix and to reorient light released from the curved corner portion of the display matrix such that the transmitted light and the reoriented light exit the image-correcting layer substantially in parallel, forming an apparent plane image of the series of pixels.Type: GrantFiled: October 26, 2016Date of Patent: March 5, 2019Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: Karlton David Powell, Ying Zheng
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Publication number: 20190028015Abstract: A magnetically geared apparatus comprising a rotor, the rotor comprising: a ring structure; and at least one pole piece mounted relative to the ring structure; wherein at least a portion of the ring structure forms a continuous ring radially inner to the at least one pole piece, wherein the at least one pole piece is received in a pole piece-receiving portion, the pole piece receiving portion being open at a radially outer end.Type: ApplicationFiled: January 5, 2017Publication date: January 24, 2019Applicant: Magnomatics LimitedInventors: David Powell, Ferran Garcia, Gregg Wilson, Robert Barrett
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Patent number: 10185064Abstract: An electronic display comprises a display matrix, an image-correcting layer, and a luminance-correcting layer. The display matrix includes a flat face portion, a curved corner portion, a light-releasing surface, and a series of pixels extending across the flat face portion and around the curved corner portion. Coupled to the light-releasing surface of the display matrix, the image-correcting layer is configured to transmit light released from the flat face portion of the display matrix and to reorient light released from the curved corner portion of the display matrix such that the transmitted light and the reoriented light exit the image-correcting layer substantially in parallel, forming an apparent plane image of the series of pixels. Arranged between the light-releasing display surface and the image-correcting layer, the luminance-correcting layer is configured to deflect the light released from the curved corner portion into an acceptance profile of the image-correcting layer.Type: GrantFiled: January 31, 2017Date of Patent: January 22, 2019Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: Karlton David Powell, John Michael Lutian
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Patent number: 10055544Abstract: A method includes accessing data related to a series of patient events, and determining whether the data accessed is related to a specific condition. Care pathway data for the condition is generated in response to determining that the accessed data is related to the specific condition. The care pathways data for the condition is stored at a custom extension to a relational database.Type: GrantFiled: June 20, 2014Date of Patent: August 21, 2018Assignee: IMS Health Technology Services LimitedInventor: David Powell
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Patent number: 10049272Abstract: Examples are disclosed herein that relate to user authentication. One example provides a biometric identification system comprising an iris illuminator, an image sensor configured to capture light reflected from irises of a user as a result of those irises being illuminated by the iris illuminator, a drive circuit configured to drive the iris illuminator in a first mode and a second mode that each cause the irises to be illuminated differently, the first and second modes thereby yielding a first mode output at the image sensor and a second mode output at the image sensor, respectively, and a processor configured to process at least one of the first mode output and the second mode output and, in response to such processing, select one of the first mode and the second mode for use in performing an iris authentication on the user.Type: GrantFiled: September 24, 2015Date of Patent: August 14, 2018Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: Mudit Agrawal, Karlton David Powell, Christopher Maurice Mei
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Patent number: 10015378Abstract: An electronic device comprising a split camera in front and back portions, and a retaining member. The front portion of the camera includes a set of front mounting features and a light-collecting unit configured to collect light from a subject. The back portion of the camera is reversibly separable from the front portion; it includes a set of back mounting features and an imaging unit configured to image the light. The set of back mounting features is configured to contact the set of front mounting features as the front and back portions are drawn together, forming, cooperatively, a kinematic mount to hold the light-collecting and imaging units in a state of alignment. The retaining member is configured to couple the front portion to the back portion when the front and back portions are drawn together and also when the front and back portions are separated.Type: GrantFiled: September 15, 2016Date of Patent: July 3, 2018Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventor: Karlton David Powell
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Patent number: 10001845Abstract: A 3D silhouette sensing system is described which comprises a stereo camera and a light source. In an embodiment, a 3D sensing module triggers the capture of pairs of images by the stereo camera at the same time that the light source illuminates the scene. A series of pairs of images may be captured at a predefined frame rate. Each pair of images is then analyzed to track both a retroreflector in the scene, which can be moved relative to the stereo camera, and an object which is between the retroreflector and the stereo camera and therefore partially occludes the retroreflector. In processing the image pairs, silhouettes are extracted for each of the retroreflector and the object and these are used to generate a 3D contour for each of the retroreflector and object.Type: GrantFiled: June 14, 2017Date of Patent: June 19, 2018Assignee: Microsoft Technology Licensing, LLCInventors: David Kim, Shahram Izadi, Vivek Pradeep, Steven Bathiche, Timothy Andrew Large, Karlton David Powell
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Publication number: 20180114474Abstract: An electronic display comprises a display matrix and an image-correcting layer. The display matrix includes a flat face portion, a curved corner portion, a light-releasing surface, and a series of pixels extending across the flat face portion and around the curved corner portion. Coupled to the light-releasing surface of the display matrix, the image-correcting layer is configured to transmit light released from the flat face portion of the display matrix and to reorient light released from the curved corner portion of the display matrix such that the transmitted light and the reoriented light exit the image-correcting layer substantially in parallel, forming an apparent plane image of the series of pixels.Type: ApplicationFiled: October 26, 2016Publication date: April 26, 2018Applicant: Microsoft Technology Licensing, LLCInventors: Karlton David Powell, Ying Zheng