Patents by Inventor Vivek Kumar Thakur
Vivek Kumar Thakur 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: 20240111083Abstract: Described examples include an apparatus includes a dichroic wedge and a spatial light modulator optically coupled to the dichroic wedge. The apparatus also includes a display optically coupled to the spatial light modulator. The display includes a waveguide having a first side and a second side and a first diffractive optical element on the first side of the waveguide. The display also includes a second diffractive optical element on the first side of the waveguide and a third diffractive optical element on the second side of the waveguide.Type: ApplicationFiled: December 12, 2023Publication date: April 4, 2024Inventors: Terry Alan Bartlett, Stephen Aldridge Shaw, Vivek Kumar Thakur
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Publication number: 20240076969Abstract: A flow assurance digital avatar is provided that combines the simulation of fluid flow through a network of oilfield facilities including reservoirs, wells and pipelines, detection and visualization of possible flow-related issues and risks in the network of oilfield facilities, user evaluation of possible optimizations (what-if scenarios) in the operation of the network of oilfield facilities for fixes and workovers with respect to flow-related issues and risks, and user evaluation and management of possible tasks or actions for the fixes and workovers for the flow-related issues and risks. Other aspects are described and claimed.Type: ApplicationFiled: August 30, 2023Publication date: March 7, 2024Inventors: Ram Kinkar Thakur, Vivek Kumar Singh, Glen Lillehammer, Niels Kueck
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Patent number: 11874486Abstract: Described examples include a display having a first light source configured to provide a first light and a second light source configured to provide a second light. The display also having a spatial light modulator configured to produce a first modulated light by modulating the first light and configured to produce a second modulated light by modulating the second light. The display also having a first diffractive optical element configured to receive the first modulated light and configured to provide a first image having a first characteristic to display optics; and a second diffractive optical element configured to receive the second modulated light and configured to provide a second image having a second characteristic to the display optics.Type: GrantFiled: August 27, 2021Date of Patent: January 16, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Terry Alan Bartlett, Stephen Aldridge Shaw, Vivek Kumar Thakur
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Patent number: 11778135Abstract: Example multi-channel display systems are disclosed. An example apparatus includes at least one processor to execute instructions to at least in response to determining that a first display controller is to provide at least a first portion of video data on a first channel, provide a first control signal to the first display controller instructing the first display controller to provide the at least the first portion of the video data on the first channel, and in response to determining that a second display controller is to provide at least a second portion of the video data on a second channel, provide a second control signal to the second display controller instructing the second display controller to provide the at least the second portion of the video data on the second channel, the second channel different from the first channel.Type: GrantFiled: December 11, 2020Date of Patent: October 3, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Aravind Lakshminarayanan, Vivek Kumar Thakur, Jobin Raj
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Patent number: 11496720Abstract: Example apparatus described herein include a first circuit configured to slice an input image frame into input image slices, the first circuit including first outputs configured to output the input image slices. Described example apparatus also include digital light processing controllers (DLPCs) including first inputs coupled to the first outputs, the digital light processing controllers configured to process the input image slices to produce output image slices, the digital light processing controllers including second outputs configured to output the output image slices. Described example apparatus further include a second circuit including second inputs coupled to the second outputs, the second circuit configured to combine the output image slices to generate image frame data to provide to an input of a digital micromirror device (DMD).Type: GrantFiled: December 8, 2021Date of Patent: November 8, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Daniel Jay Morgan, Aravind Lakshminarayanan, Vivek Kumar Thakur
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Publication number: 20220103792Abstract: Example apparatus described herein include a first circuit configured to slice an input image frame into input image slices, the first circuit including first outputs configured to output the input image slices. Described example apparatus also include digital light processing controllers (DLPCs) including first inputs coupled to the first outputs, the digital light processing controllers configured to process the input image slices to produce output image slices, the digital light processing controllers including second outputs configured to output the output image slices. Described example apparatus further include a second circuit including second inputs coupled to the second outputs, the second circuit configured to combine the output image slices to generate image frame data to provide to an input of a digital micromirror device (DMD).Type: ApplicationFiled: December 8, 2021Publication date: March 31, 2022Inventors: Daniel Jay Morgan, Aravind Lakshminarayanan, Vivek Kumar Thakur
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Patent number: 11245882Abstract: Example apparatus described herein include a first circuit configured to slice an input image frame into input image slices, the first circuit including first outputs configured to output the input image slices. Described example apparatus also include digital light processing controllers (DLPCs) including first inputs coupled to the first outputs, the digital light processing controllers configured to process the input image slices to produce output image slices, the digital light processing controllers including second outputs configured to output the output image slices. Described example apparatus further include a second circuit including second inputs coupled to the second outputs, the second circuit configured to combine the output image slices to generate image frame data to provide to an input of a digital micromirror device (DMD).Type: GrantFiled: October 8, 2019Date of Patent: February 8, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Daniel Jay Morgan, Aravind Lakshminarayanan, Vivek Kumar Thakur
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Publication number: 20210389517Abstract: Described examples include a display having a first light source configured to provide a first light and a second light source configured to provide a second light. The display also having a spatial light modulator configured to produce a first modulated light by modulating the first light and configured to produce a second modulated light by modulating the second light. The display also having a first diffractive optical element configured to receive the first modulated light and configured to provide a first image having a first characteristic to display optics; and a second diffractive optical element configured to receive the second modulated light and configured to provide a second image having a second characteristic to the display optics.Type: ApplicationFiled: August 27, 2021Publication date: December 16, 2021Inventors: Terry Alan Bartlett, Stephen Aldridge Shaw, Vivek Kumar Thakur
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Patent number: 11131796Abstract: Described examples include a display having a first light source configured to provide a first light and a second light source configured to provide a second light. The display also having a spatial light modulator configured to produce a first modulated light by modulating the first light and configured to produce a second modulated light by modulating the second light. The display also having a first diffractive optical element configured to receive the first modulated light and configured to provide a first image having a first characteristic to display optics; and a second diffractive optical element configured to receive the second modulated light and configured to provide a second image having a second characteristic to the display optics.Type: GrantFiled: May 31, 2019Date of Patent: September 28, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Terry Alan Bartlett, Stephen Aldridge Shaw, Vivek Kumar Thakur
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Patent number: 11074074Abstract: This disclosure relates to various implementations improve operational lifetime for a spatial light modulator device. One or more controllers are able to determine a target duty cycle based on an operating condition for a spatial light modulator device. The spatial light modulator device comprises one or more light modulation components that modulate light. The controllers allocate a refresh time period for encoding spatial light modulator refresh instructions based on the target duty cycle and encode spatial light modulator refresh instructions within the refresh time period. Afterwards, the controllers transmit the spatial light modulator refresh instruction to the spatial light modulator device.Type: GrantFiled: March 4, 2019Date of Patent: July 27, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Aravind Lakshminarayanan, Vivek Kumar Thakur
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Publication number: 20210185268Abstract: Example multi-channel display systems are disclosed. An example apparatus includes at least one processor to execute instructions to at least in response to determining that a first display controller is to provide at least a first portion of video data on a first channel, provide a first control signal to the first display controller instructing the first display controller to provide the at least the first portion of the video data on the first channel, and in response to determining that a second display controller is to provide at least a second portion of the video data on a second channel, provide a second control signal to the second display controller instructing the second display controller to provide the at least the second portion of the video data on the second channel, the second channel different from the first channel.Type: ApplicationFiled: December 11, 2020Publication date: June 17, 2021Inventors: Aravind Lakshminarayanan, Vivek Kumar Thakur, Jobin Raj
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Patent number: 10989915Abstract: A pupil expansion apparatus includes: a beam splitter, configured to receive light from an optic and to replicate a pupil formed by the optic; and a waveguide, optically coupled to the beam splitter, the waveguide configured to receive light from the beam splitter and further expand the pupil.Type: GrantFiled: May 5, 2020Date of Patent: April 27, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Vivek Kumar Thakur, John M. Ferri, Paul L. Rancuret
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Publication number: 20200264428Abstract: A pupil expansion apparatus includes: a beam splitter, configured to receive light from an optic and to replicate a pupil formed by the optic; and a waveguide, optically coupled to the beam splitter, the waveguide configured to receive light from the beam splitter and further expand the pupil.Type: ApplicationFiled: May 5, 2020Publication date: August 20, 2020Inventors: Vivek Kumar Thakur, John M. Ferri, Paul L. Rancuret
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Publication number: 20200210177Abstract: This disclosure relates to various implementations improve operational lifetime for a spatial light modulator device. One or more controllers are able to determine a target duty cycle based on an operating condition for a spatial light modulator device. The spatial light modulator device comprises one or more light modulation components that modulate light. The controllers allocate a refresh time period for encoding spatial light modulator refresh instructions based on the target duty cycle and encode spatial light modulator refresh instructions within the refresh time period. Afterwards, the controllers transmit the spatial light modulator refresh instruction to the spatial light modulator device.Type: ApplicationFiled: March 4, 2019Publication date: July 2, 2020Inventors: Aravind LAKSHMINARAYANAN, Vivek Kumar THAKUR
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Patent number: 10642031Abstract: The pupil formed by an optical apparatus is expanded by use of a beam splitter to replicate the pupil and a waveguide to further replicate the replicated pupil. An optional rotator element can rotate a portion of the light split by the beam splitter to provide consistent polarization of light in the optical apparatus. In some embodiments, the beam splitter replication expands the pupil in one direction, while the waveguide replication expands the pupil in a second direction.Type: GrantFiled: May 3, 2019Date of Patent: May 5, 2020Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Vivek Kumar Thakur, John M. Ferri, Paul L. Rancuret
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Publication number: 20200112708Abstract: Example apparatus described herein include a first circuit configured to slice an input image frame into input image slices, the first circuit including first outputs configured to output the input image slices. Described example apparatus also include digital light processing controllers (DLPCs) including first inputs coupled to the first outputs, the digital light processing controllers configured to process the input image slices to produce output image slices, the digital light processing controllers including second outputs configured to output the output image slices. Described example apparatus further include a second circuit including second inputs coupled to the second outputs, the second circuit configured to combine the output image slices to generate image frame data to provide to an input of a digital micromirror device (DMD).Type: ApplicationFiled: October 8, 2019Publication date: April 9, 2020Inventors: Daniel Jay Morgan, Aravind Lakshminarayanan, Vivek Kumar Thakur
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Publication number: 20200081176Abstract: Described examples include a display having a first light source configured to provide a first light and a second light source configured to provide a second light. The display also having a spatial light modulator configured to produce a first modulated light by modulating the first light and configured to produce a second modulated light by modulating the second light. The display also having a first diffractive optical element configured to receive the first modulated light and configured to provide a first image having a first characteristic to display optics; and a second diffractive optical element configured to receive the second modulated light and configured to provide a second image having a second characteristic to the display optics.Type: ApplicationFiled: May 31, 2019Publication date: March 12, 2020Inventors: Terry Alan Bartlett, Stephen Aldridge Shaw, Vivek Kumar Thakur
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Publication number: 20190339515Abstract: The pupil formed by an optical apparatus is expanded by use of a beam splitter to replicate the pupil and a waveguide to further replicate the replicated pupil. An optional rotator element can rotate a portion of the light split by the beam splitter to provide consistent polarization of light in the optical apparatus. In some embodiments, the beam splitter replication expands the pupil in one direction, while the waveguide replication expands the pupil in a second direction.Type: ApplicationFiled: May 3, 2019Publication date: November 7, 2019Inventors: Vivek Kumar THAKUR, John M. FERRI, Paul L. RANCURET
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Patent number: 7009736Abstract: This invention is a screening method. The input image is divided into a plurality of supercells. These supercells are divided into a plurality of individual cells. An expanded cell is defined larger than each of the individual cells. A map of an input gray scale tone to an output gray scale tone is defined for each pixel of the expanded cell. The screening takes place for each pixel of the input image. First the method determines a pixel of the expanded cell corresponding to the input pixel. Then the output gray scale tone corresponding to the pixel of the expanded cell is recalled.Type: GrantFiled: December 3, 2001Date of Patent: March 7, 2006Assignee: Texas Instruments IncorporatedInventor: Vivek Kumar Thakur
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Patent number: 6983298Abstract: This invention is a method and apparatus for interpolation which enables simpler and cost efficient implementation in hardware or software. A function table stores values of the function at addresses corresponding to the argument points where the function is known. The input value enables identification of the function values for arguments immediately below and above the input value. Respective bits of the absolute value of the difference between these two function values enables corresponding gradient value tables. A set of gradient values are stored in these gradient value tables. The least significant bits of the input value, those bits less significant than the arguments of the stored function values, address entries in the enabled gradient value tables. The desired interpolation value is the sum of the first function value and the gradient value recalled from the gradient tables.Type: GrantFiled: February 15, 2002Date of Patent: January 3, 2006Assignee: Texas Instruments IncorporatedInventor: Vivek Kumar Thakur