Patents by Inventor Ulrich Vollath
Ulrich Vollath 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: 20240160687Abstract: Computation of optimal embeddings for an optimization problem to be solved using a quantum annealer can be accelerated by pre-computing optimal embeddings in a target graph corresponding to a quantum processor architecture of clique graphs (or fully-connected network graphs) having various numbers of nodes. Pre-computed embeddings can be stored in a library. To solve an optimization problem, a clique-graph embedding of appropriate size can be retrieved from the library and modified to match the problem to be solved. The modified embedding can be executed using an appropriate quantum annealer.Type: ApplicationFiled: November 15, 2022Publication date: May 16, 2024Applicant: Trimble Inc.Inventors: Ulrich Vollath, Venkateswaran Kasirajan
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Publication number: 20230419681Abstract: Disclosed are techniques for automatically optimizing radar filter parameters. In embodiments, radar sensor data is captured from a radar sensor on a moving machine/vehicle. The radar sensor data is filtered using radar filter parameters to produce filtered radar sensor data. Radar obstacle points are produced from the filtered radar sensor data. Lidar sensor data is captured from a lidar sensor on the moving machine. Lidar obstacle points are produced from the lidar sensor data. The radar filter parameters are optimized using the lidar obstacle points.Type: ApplicationFiled: June 28, 2022Publication date: December 28, 2023Applicant: Trimble Inc.Inventors: Juan Cheng, Thomas Sterling, Ulrich Vollath, Brandon Sights
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Patent number: 11668841Abstract: Methods and apparatus for processing of GNSS signals are presented. These include GNSS processing with obtaining GNSS data derived from signals received at a rover antenna, obtaining correction data, maintaining a time sequence of at least one rover position and at least one rover position difference with associated time tags, using the time sequence to determine at least one derived rover position by, starting from a position determined using corrections synchronous with rover data as an anchor position at a time tag, deriving a new anchor position for the time tag of the anchor position and at least one other estimated rover position at the time tag of the anchor position, and/or reporting the new anchor position and/or a new derived rover position.Type: GrantFiled: March 8, 2021Date of Patent: June 6, 2023Assignee: Trimble Inc.Inventors: Ulrich Vollath, Nicholas Charles Talbot, Markus Glocker, Xiaoming Chen, Rodrigo Leandro
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Publication number: 20210190967Abstract: Methods and apparatus for processing of GNSS signals are presented.Type: ApplicationFiled: March 8, 2021Publication date: June 24, 2021Inventors: Ulrich Vollath, Nicholas Charles Talbot, Markus Glocker, Xiaoming Chen, Rodrigo Leandro
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Patent number: 10969495Abstract: Methods and apparatus for processing of GNSS signals are presented. These include GNSS processing with predicted precise clocks, GNSS processing with mixed-quality data, GNSS processing with time-sequence maintenance, GNSS processing with reduction of position jumps in low-latency solutions, GNSS processing with position blending to bridge reference station changes, and GNSS processing with delta-phase correction for incorrect starting position.Type: GrantFiled: February 8, 2019Date of Patent: April 6, 2021Assignee: Trimble Inc.Inventors: Ulrich Vollath, Nicholas Charles Talbot, Markus Glocker, Xiaoming Chen, Rodrigo Leandro
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Publication number: 20200025938Abstract: Methods and apparatus for processing of GNSS signals are presented. These include GNSS processing with predicted precise clocks, GNSS processing with mixed-quality data, GNSS processing with time-sequence maintenance, GNSS processing with reduction of position jumps in low-latency solutions, GNSS processing with position blending to bridge reference station changes, and GNSS processing with delta-phase correction for incorrect starting position.Type: ApplicationFiled: February 8, 2019Publication date: January 23, 2020Inventors: Ulrich Vollath, Nicholas Charles Talbot, Markus Glocker, Xiaoming Chen, Rodrigo Leandro
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Patent number: 10408941Abstract: A correction message for regional GNSS data includes at least one network message and at least one cluster message. The at least one network message relates to stations of a network of stations within a region. The at least one cluster message relates to a subset of stations within the region. Network elements are extracted from the network message and cluster elements are extracted from the cluster message. Network elements and cluster elements are used to determine a position of a rover within the region.Type: GrantFiled: July 7, 2017Date of Patent: September 10, 2019Assignee: Trimble Inc.Inventors: Xiaoming Chen, Ulrich Vollath, Kendall Ferguson
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Patent number: 10234562Abstract: A method and system for delivery of location-dependent time-specific corrections. In one embodiment, a first extended-lifetime correction for a first region is generated. A distribution timetable is used to determine a first time interval for transmitting the first extended-lifetime correction to the first region. The first extended-lifetime correction is then transmitted via a wireless communication network to said first region in accordance with said distribution timetable.Type: GrantFiled: February 23, 2012Date of Patent: March 19, 2019Assignee: Trimble Inc.Inventors: James M. Janky, Ulrich Vollath, Nicholas C. Talbot
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Patent number: 9936181Abstract: A system for projecting an image, including layout information, on a surface in a building under construction has a projector mounted on a moveable support for supporting a worker at a work position in the building. The projector projects an image on a surface above the moveable support in response to an image signal defining the image to be projected. The image indicates the location of connectors, anchors, and holes to be affixed to, or cut through, the surface. A system determines the two dimensional position of the projector in the building, and a distance measuring system for determines the distance from the projector to said surface. A processor, responsive to a memory having stored building plan images, provides an image signal to the projector adjusted for the two dimensional location of the projector and for the distance from the projector to the surface.Type: GrantFiled: July 23, 2015Date of Patent: April 3, 2018Assignee: Trimble Inc.Inventors: Kent Wayne Kahle, Jinwei Jiang, Christian Graesser, Andreas Winter, Ulrich Vollath
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Publication number: 20170307760Abstract: A correction message for regional GNSS data includes data from several stations in a network. The correction message has at least one cluster message. The cluster message contains cluster elements relating to a subset of GNSS stations.Type: ApplicationFiled: July 7, 2017Publication date: October 26, 2017Inventors: Xiaoming Chen, Ulrich Vollath, Kendall Ferguson
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Patent number: 9733359Abstract: Methods and apparatus for processing of GNSS data derived from multi-frequency code and carrier observations are presented which make available correction data for use by a rover located within the region, the correction data comprising: the ionospheric delay over the region, the tropospheric delay over the region, the phase-leveled geometric correction per satellite, and the at least one code bias per satellite. In some embodiments the correction data includes an ionospheric phase bias per satellite. Methods and apparatus for determining a precise position of a rover located within a region are presented in which a GNSS receiver is operated to obtain multi-frequency code and carrier observations and correction data, to create rover corrections from the correction data, and to determine a precise rover position using the rover observations and the rover corrections.Type: GrantFiled: February 14, 2011Date of Patent: August 15, 2017Assignee: Trimble Inc.Inventors: Xiaoming Chen, Ulrich Vollath, Kendall Ferguson
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Patent number: 9709683Abstract: Methods and apparatus provide for positioning of a rover antenna from GNSS data derived from multi-frequency signals and correction data derived from a network of reference stations. At each of a plurality of epochs, the GNSS data and correction data are used to estimate values defining a rover antenna position and a set of multi-frequency ambiguities. An ionospheric-free carrier-phase ambiguity per satellite is estimated based on a known rover antenna position. The estimated ionospheric-free carrier-phase ambiguity is combined with an estimated widelane ambiguity and with an estimated ionospheric-free ambiguity and with values defining the known rover antenna position to obtain values defining an aided rover antenna position and aided multi-frequency ambiguities.Type: GrantFiled: March 11, 2012Date of Patent: July 18, 2017Assignee: Trimble Inc.Inventors: Rodrigo Leandro, Ulrich Vollath, Nicholas Charles Talbot
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Publication number: 20170176600Abstract: Methods and apparatus for processing of GNSS signals are presented. These include GNSS processing with predicted precise clocks, GNSS processing with mixed-quality data, GNSS processing with time-sequence maintenance, GNSS processing with reduction of position jumps in low-latency solutions, GNSS processing with position blending to bridge reference station changes, and GNSS processing with delta-phase correction for incorrect starting position.Type: ApplicationFiled: December 22, 2016Publication date: June 22, 2017Inventors: Ulrich Vollath, Nicholas Charles Talbot, Markus Glocker, Xiaoming Chen, Rodrigo Leandro
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Patent number: 9651677Abstract: Methods and apparatus provide for positioning of a rover antenna from GNSS data derived from multi-frequency signals and correction data derived from a network of reference stations. Rover antenna position and multi-frequency ambiguities are estimated at each epoch. An ionospheric filter models variation in ionospheric bias per satellite. A set of ionospheric carrier-phase ambiguities is estimated at least when the multi-frequency ambiguities have attained a predetermined precision. The estimated ionospheric carrier-phase ambiguities are cached. After detecting interruption of signal at the rover antenna and determining reacquisition of signals at the rover antenna, an ionospheric bias per satellite over an interruption interval is predicted. For each satellite, a cached ionospheric carrier-phase ambiguity is combined with a predicted ionospheric bias to obtain a post-interruption ionospheric ambiguity estimate.Type: GrantFiled: March 11, 2012Date of Patent: May 16, 2017Assignee: Trimble Inc.Inventors: Rodrigo Leandro, Ulrich Vollath, Nicholas Charles Talbot
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Patent number: 9594168Abstract: Methods and apparatus are described for determining position of a rover antenna, comprising: obtaining rover GNSS data derived from code observations and carrier phase observations of GNSS signals of multiple satellites over multiple epochs, obtaining precise satellite data for the satellites, determining a virtual base station location, generating epochs of synthesized base station data using at least the precise satellite data and the virtual base station location, and applying a differential process to at least the rover GNSS data and the synthesized base station data to determine at least rover antenna positions.Type: GrantFiled: September 19, 2010Date of Patent: March 14, 2017Assignee: Trimble Inc.Inventors: Ulrich Vollath, Xiaoming Chen, Rodrigo Leandro
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Patent number: 9562975Abstract: Methods and apparatus for processing of GNSS signals are presented. These include GNSS processing with predicted precise clocks, GNSS processing with mixed-quality data, GNSS processing with time-sequence maintenance, GNSS processing with reduction of position jumps in low-latency solutions, GNSS processing with position blending to bridge reference station changes, and GNSS processing with delta-phase correction for incorrect starting position.Type: GrantFiled: March 19, 2012Date of Patent: February 7, 2017Assignee: Trimble Inc.Inventors: Ulrich Vollath, Nicholas Charles Talbot, Markus Glocker, Xiaoming Chen, Rodrigo Leandro
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Patent number: 9417328Abstract: A method for reducing multipath when determining a location of a stationary or near stationary position, includes receiving a signal from an antenna moving continuously with respect to the stationary or near stationary position, the signal including a multipath component, processing the received signal including the multipath component, wherein multipath error in the received signal is reduced during the processing and determining a location of the stationary or near stationary position based on the processed received signal with the multipath error reduced.Type: GrantFiled: October 2, 2013Date of Patent: August 16, 2016Assignee: Trimble Navigation LimitedInventor: Ulrich Vollath
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Patent number: 9322918Abstract: Methods and apparatus are presented for improved productivity in determining static position of an antenna of a GNSS rover, such as in stop-and-go surveying. Computer-implemented methods and apparatus provide for determining a static position of an antenna of a GNSS rover from observations of GNSS signals collected at the antenna over multiple epochs and from correction data for at least one of the epochs.Type: GrantFiled: February 20, 2010Date of Patent: April 26, 2016Assignee: Trimble Navigation LimitedInventors: Ulrich Vollath, Nicholas Charles Talbot
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Patent number: 9201147Abstract: Methods and apparatus for processing of GNSS data derived from multi-frequency code and carrier observations are presented which make available correction data for use by a rover located within the region, the correction data comprising: the ionospheric delay over the region, the tropospheric delay over the region, the phase-leveled geometric correction per satellite, and the at least one code bias per satellite. In some embodiments the correction data includes an ionospheric phase bias per satellite. Methods and apparatus for determining a precise position of a rover located within a region are presented in which a GNSS receiver is operated to obtain multi-frequency code and carrier observations and correction data, to create rover corrections from the correction data, and to determine a precise rover position using the rover observations and the rover corrections.Type: GrantFiled: February 14, 2011Date of Patent: December 1, 2015Assignee: Trimble Navigation LimitedInventors: Xiaoming Chen, Ulrich Vollath, Kendall Ferguson
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Publication number: 20150334362Abstract: A system for projecting an image, including layout information, on a surface in a building under construction has a projector mounted on a moveable support for supporting a worker at a work position in the building. The projector projects an image on a surface above the moveable support in response to an image signal defining the image to be projected. The image indicates the location of connectors, anchors, and holes to be affixed to, or cut through, the surface. A system determines the two dimensional position of the projector in the building, and a distance measuring system for determines the distance from the projector to said surface. A processor, responsive to a memory having stored building plan images, provides an image signal to the projector adjusted for the two dimensional location of the projector and for the distance from the projector to the surface.Type: ApplicationFiled: July 23, 2015Publication date: November 19, 2015Inventors: Kent Wayne Kahle, Jinwei Jiang, Christian Graesser, Andreas Winter, Ulrich Vollath