Patents by Inventor Gregory John Ward
Gregory John Ward 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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Publication number: 20210360139Abstract: An auto exposure method for an image sensor includes (a) evaluating variance, for each of a plurality of histograms of the pixel values from a respective plurality of individual exposures of the image sensor at respective exposure 5 time settings, of contribution from individual bins of the histogram to total entropy of the histogram, to determine an optimal exposure time for the image sensor corresponding to a minimum value of the variance, and (b) outputting the optimal exposure time to the image sensor.Type: ApplicationFiled: September 5, 2019Publication date: November 18, 2021Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Jon S. MCELVAIN, Walter C. GISH, Jonathan Robert MILLER, Gregory John WARD, Robin ATKINS
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Publication number: 20210287618Abstract: Apparatus and methods are provided that employ one or more of a variety of techniques for reducing the time required to display high resolution images on a high dynamic range display having a light source layer and a display layer. In one technique, the image resolution is reduced, an effective luminance pattern is determined for the reduced resolution image, and the resolution of the effective luminance pattern is then increased to the resolution of the display layer. In another technique, the light source layer's point spread function is decomposed into a plurality of components, and an effective luminance pattern is determined for each component. The effective luminance patterns are then combined to produce a total effective luminance pattern. Additional image display time reduction techniques are provided.Type: ApplicationFiled: March 29, 2021Publication date: September 16, 2021Applicant: Dolby Laboratories Licensing CorporationInventors: Lorne A. WHITEHEAD, Helge SEETZEN, Gregory John WARD, Wolfgang HEIDRICH
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Publication number: 20210243352Abstract: An auto exposure method for a spatially-multiplexed-exposure (SME) high-dynamic-range (HDR) image sensor includes (a) retrieving raw image data from an exposure of the spatially-multiplexed-exposure high-dynamic-range image sensor, (b) preprocessing long-exposure pixel values and short-exposure pixel values of the raw image data to remove therefrom long-exposure pixel values and short-exposure pixel values failing to meet one or more quality requirements, (c) synthesizing, into an high-dynamic-range histogram, the long-exposure pixel values remaining after the step of preprocessing and the short-exposure pixel values remaining after the step of preprocessing, (d) deriving a goodness metric from the high-dynamic-range histogram, (e) adjusting at least one of the long exposure time and the short exposure time, based at least in part upon the goodness metric, and (f) outputting the at least one of the long exposure time and the short exposure time, as adjusted, to the spatially-multiplexed-exposure high-dynamic-Type: ApplicationFiled: September 5, 2019Publication date: August 5, 2021Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Jon S. MCELVAIN, Walter C. GISH, Jonathan Robert MILLER, Gregory John WARD, Robin ATKINS
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Publication number: 20210198227Abstract: A process for producing ethylene glycol and/or ethylene carbonate, said process comprising contacting at least a portion of a recycle gas stream comprising an alkyl iodide impurity with a guard bed system positioned upstream of an ethylene oxide reactor to produce a treated recycle gas stream, wherein the guard bed system comprises silver on alumina; contacting an epoxidation feed stream comprising an ethylene feed stream, oxygen, chloride moderator, and at least a portion of the treated recycle gas stream with an epoxidation catalyst in the ethylene oxide reactor to produce an epoxidation reaction product comprising ethylene oxide; and contacting at least a portion of the epoxidation reaction product comprising ethylene oxide with a liquid absorbent in the presence of an iodide-containing catalyst in an absorber to produce a product stream comprising ethylene carbonate and/or ethylene glycol and the recycle gas stream comprising the alkyl iodide impurity.Type: ApplicationFiled: December 6, 2018Publication date: July 1, 2021Inventors: Roel Guillaume Hubertus Leonardus BASTINGS, Jesse Raymond BLACK, Vesna BOJOVIC, Wayne Errol EVANS, Gregory John WARD
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Patent number: 11000819Abstract: The invention provides a reaction system for the production of ethylene carbonate and/or ethylene glycol. The reaction system having a guard bed system upstream of a catalytic EO reactor. The guard bed system having a feed line supplying a gaseous feed and an effluent line configured to remove the treated gaseous feed. The guard bed system has two or more guard bed vessels arranged in series in sequential order, each having an inlet, a bed of guard bed material and an outlet. The inlet of each guard bed vessel is attached by means of valves to both the feed line and the outlet of the guard bed vessel preceding it in sequential order. The outlet of each guard bed vessel is attached by means of valves to both the effluent line and to the inlet of the guard bed vessel following it in sequential order.Type: GrantFiled: December 13, 2016Date of Patent: May 11, 2021Assignee: Shell Oil CompanyInventors: Jesse Raymond Black, Gregory John Ward, Roel Guillaume Hubertus Leonardus Bastings, David Allen Van Kleeck, Wayne Errol Evans
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Patent number: 10991281Abstract: An imaging system, comprising a pixel image sensor array disposed on a substrate and comprising a plurality of pixels, a multi-stage timer coupled to said pixel image sensor array for triggering exposures of said pixels, wherein the pixels are grouped into N subsets, and the timer triggers, for each subset, a sequence of at least two exposures of different capture duration of the pixels of said subset, wherein start times of the exposure sequences of the different subsets are temporally offset, at least one ADC coupled to said pixel image sensor array, which converts said exposures of said pixels to pixel digital values, a memory coupled to said at least one ADC to store said pixel digital values, and a logic circuit coupled to said memory to determine for each pixel of the image sensor array which of the corresponding stored pixel digital values to upload to a video frame.Type: GrantFiled: February 16, 2017Date of Patent: April 27, 2021Assignee: Dolby Laboratories Licensing CorporationInventor: Gregory John Ward
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Patent number: 10992936Abstract: Techniques are provided to encode and decode image data comprising a tone mapped (TM) image with HDR reconstruction data in the form of luminance ratios and color residual values. In an example embodiment, luminance ratio values and residual values in color channels of a color space are generated on an individual pixel basis based on a high dynamic range (HDR) image and a derivative tone-mapped (TM) image that comprises one or more color alterations that would not be recoverable from the TM image with a luminance ratio image. The TM image with HDR reconstruction data derived from the luminance ratio values and the color-channel residual values may be outputted in an image file to a downstream device, for example, for decoding, rendering, and/or storing. The image file may be decoded to generate a restored HDR image free of the color alterations.Type: GrantFiled: November 11, 2019Date of Patent: April 27, 2021Assignee: Dolby Laboratories Licensing CorporationInventors: Wenhui Jia, Ajit Ninan, Arkady Ten, Gregory John Ward
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Patent number: 10984505Abstract: A method for demosaicing an image captured by an image sensor includes (a) computing, for each of a first plurality of interpolated pixel-values and based on neighboring primary pixel-values, a respective first confidence value; (b) generating a first thresholded mapping from a first coordinate mapping by removing each interpolated pixel-value having a first confidence value less than a threshold value; (c) repeating steps of computing and generating for a second and third sub-plurality of sensor pixels to yield a second and a third thresholded mapping; (d) determining high-confidence array-coordinates as array-coordinates included in all thresholded mappings, remaining array-coordinates being low-confidence array-coordinates; (e) forming a refined image including, at each high-confidence array-coordinate, a respective pixel-value-triplet including one primary pixel-value and two interpolated pixel-values; and (f) filling the refined image by assigning, for each low-confidence array-coordinate, a pixel-valueType: GrantFiled: January 15, 2019Date of Patent: April 20, 2021Assignee: Dolby Laboratories Licensing CorporationInventor: Gregory John Ward
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Patent number: 10937229Abstract: Directional image sensor data may be acquired with one or more directional image sensors. A light source and illumination image may be generated based on the directional image sensor data. A number of operations may be caused to be performed for an image based at least in part on light source information in the light source image. The operations may include display management operations, device positional operations, augmented reality superimposition operations, ambient light control operations, etc.Type: GrantFiled: August 21, 2019Date of Patent: March 2, 2021Assignee: Dolby Laboratories Licensing CorporationInventors: Timo Kunkel, Patrick Griffis, Gregory John Ward
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Publication number: 20210027423Abstract: A method for demosaicing an image captured by an image sensor includes (a) computing, for each of a first plurality of interpolated pixel-values and based on neighboring primary pixel-values, a respective first confidence value; (b) generating a first thresholded mapping from a first coordinate mapping by removing each interpolated pixel-value having a first confidence value less than a threshold value; (c) repeating steps of computing and generating for a second and third sub-plurality of sensor pixels to yield a second and a third thresholded mapping; (d) determining high-confidence array-coordinates as array-coordinates included in all thresholded mappings, remaining array-coordinates being low-confidence array-coordinates; (e) forming a refined image including, at each high-confidence array-coordinate, a respective pixel-value-triplet including one primary pixel-value and two interpolated pixel-values; and (f) filling the refined image by assigning, for each low-confidence array-coordinate, a pixel-valueType: ApplicationFiled: January 15, 2019Publication date: January 28, 2021Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventor: Gregory John Ward
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Publication number: 20210001298Abstract: The invention provides a reaction system for the production of ethylene carbonate and/or ethylene glycol. The system having a guard bed system upstream of a catalytic EO reactor. The guard bed system having a feed line supplying a gaseous feed to be treated and an effluent line configured to remove the treated gaseous feed. The guard bed system has two or more guard bed vessels arranged in series in sequential order, each having an inlet, a bed of guard bed material and an outlet. The inlet of each guard bed vessel is attached by means of valves to both the feed line and the outlet of the guard bed vessel preceding it in sequential order. The outlet of each guard bed vessel is attached by means of valves to both the effluent line and to the inlet of the guard bed vessel following it in sequential order.Type: ApplicationFiled: September 22, 2020Publication date: January 7, 2021Inventors: Jesse Raymond BLACK, Gregory John WARD, Roel Guillaume Hubertus Leonardus BASTINGS, David Allen VAN KLEECK, Wayne Errol EVANS
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Publication number: 20200394974Abstract: Apparatus and methods are provided that employ one or more of a variety of techniques for reducing the time required to display high resolution images on a high dynamic range display having a light source layer and a display layer. In one technique, the image resolution is reduced, an effective luminance pattern is determined for the reduced resolution image, and the resolution of the effective luminance pattern is then increased to the resolution of the display layer. In another technique, the light source layer's point spread function is decomposed into a plurality of components, and an effective luminance pattern is determined for each component. The effective luminance patterns are then combined to produce a total effective luminance pattern. Additional image display time reduction techniques are provided.Type: ApplicationFiled: January 20, 2020Publication date: December 17, 2020Applicant: Dolby Laboratories Licensing CorporationInventors: Lorne A. WHITEHEAD, Helge SEETZEN, Gregory John WARD, Wolfgang HEIDRICH
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Patent number: 10750137Abstract: A backlight for a display comprises a plurality of independently controllable light sources and inclined surfaces inclining in a radially outward direction from each light source for shaping the distribution of emitted light. The light sources may each comprise a group of differently-colored light emitters. The backlight may include light integrators configured to mix light of the differently-colored light emitters. Inclined surfaces for shaping the distribution of emitted light may be arranged around exits of the light integrators.Type: GrantFiled: March 25, 2019Date of Patent: August 18, 2020Assignee: Dolby Laboratories Licensing CorporationInventors: Helge Seetzen, Lorne A. Whitehead, Gregory John Ward
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Publication number: 20200084448Abstract: Techniques are provided to encode and decode image data comprising a tone mapped (TM) image with HDR reconstruction data in the form of luminance ratios and color residual values. In an example embodiment, luminance ratio values and residual values in color channels of a color space are generated on an individual pixel basis based on a high dynamic range (HDR) image and a derivative tone-mapped (TM) image that comprises one or more color alterations that would not be recoverable from the TM image with a luminance ratio image. The TM image with HDR reconstruction data derived from the luminance ratio values and the color-channel residual values may be outputted in an image file to a downstream device, for example, for decoding, rendering, and/or storing. The image file may be decoded to generate a restored HDR image free of the color alterations.Type: ApplicationFiled: November 11, 2019Publication date: March 12, 2020Applicant: Dolby Laboratories Licensing CorporationInventors: Wenhui JIA, Ajit NINAN, Arkady TEN, Gregory John WARD
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Publication number: 20200073152Abstract: A display has a screen which incorporates a light modulator. The screen may be a front projection screen or a rear-projection screen. The screen is illuminated with light from a light source comprising an array of controllable light-emitters. The controllable-emitters and elements of the light modulator may be controlled to adjust the intensity of light emanating from corresponding areas on the screen. The display may provide a high dynamic range.Type: ApplicationFiled: August 6, 2019Publication date: March 5, 2020Applicant: Dolby Laboratories Licensing CorporationInventors: Lorne A. WHITEHEAD, Gregory John WARD, Wolfgang STUERZLINGER, Helge SEETZEN, Don GRAHAM
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Patent number: 10540932Abstract: Apparatus and methods are provided that employ one or more of a variety of techniques for reducing the time required to display high resolution images on a high dynamic range display having a light source layer and a display layer. In one technique, the image resolution is reduced, an effective luminance pattern is determined for the reduced resolution image, and the resolution of the effective luminance pattern is then increased to the resolution of the display layer. In another technique, the light source layer's point spread function is decomposed into a plurality of components, and an effective luminance pattern is determined for each component. The effective luminance patterns are then combined to produce a total effective luminance pattern. Additional image display time reduction techniques are provided.Type: GrantFiled: December 10, 2018Date of Patent: January 21, 2020Assignee: Dolby Laboratories Licensing CorporationInventors: Lorne A. Whitehead, Helge Seetzen, Gregory John Ward, Wolfgang Heidrich
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Patent number: 10536689Abstract: A projection display system includes a spatial modulator that is controlled to compensate for flare in a lens of the projector. The spatial modulator increases achievable intra-frame contrast and facilitates increased peak luminance without unacceptable black levels. Some embodiments provide 3D projection systems in which the spatial modulator is combined with a polarization control panel.Type: GrantFiled: May 20, 2019Date of Patent: January 14, 2020Assignee: Dolby Laboratories Licensing CorporationInventors: Gregory John Ward, Robin Atkins
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Patent number: 10511837Abstract: Techniques are provided to encode and decode image data comprising a tone mapped (TM) image with HDR reconstruction data in the form of luminance ratios and color residual values. In an example embodiment, luminance ratio values and residual values in color channels of a color space are generated on an individual pixel basis based on a high dynamic range (HDR) image and a derivative tone-mapped (TM) image that comprises one or more color alterations that would not be recoverable from the TM image with a luminance ratio image. The TM image with HDR reconstruction data derived from the luminance ratio values and the color-channel residual values may be outputted in an image file to a downstream device, for example, for decoding, rendering, and/or storing. The image file may be decoded to generate a restored HDR image free of the color alterations.Type: GrantFiled: March 25, 2019Date of Patent: December 17, 2019Assignee: Dolby Laboratories Licensing CorporationInventors: Wenhui Jia, Ajit Ninan, Arkady Ten, Gregory John Ward
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Publication number: 20190378327Abstract: Directional image sensor data may be acquired with one or more directional image sensors. A light source and illumination image may be generated based on the directional image sensor data. A number of operations may be caused to be performed for an image based at least in part on light source information in the light source image. The operations may include display management operations, device positional operations, augmented reality superimposition operations, ambient light control operations, etc.Type: ApplicationFiled: August 21, 2019Publication date: December 12, 2019Applicant: Dolby Laboratories Licensing CorporationInventors: Timo KUNKEL, Patrick GRIFFIS, Gregory John WARD
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Patent number: 10469871Abstract: Representation and coding of multi-view images using tapestry encoding are described for standard and enhanced dynamic ranges compatibility. A tapestry comprises information on a tapestry image, a left-shift displacement map and a right-shift displacement map. Perspective images of a scene can be generated from the tapestry and the displacement maps. Different methods for achieving compatibility are described.Type: GrantFiled: December 10, 2015Date of Patent: November 5, 2019Assignee: Dolby Laboratories Licensing CorporationInventors: Guan-Ming Su, Gregory John Ward, Timo Kunkel, Scott Daly, Samir N. Hulyalkar