Patents by Inventor Tony Gustafsson
Tony Gustafsson 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: 20240119098Abstract: The present application describes various methods and devices for providing content to users. In one aspect, a method includes, for each content item of a set of content items, obtaining a score for the content item using a recommender system, the score corresponding to a calculation of subsequent repeated engagement by a user with the content item. The method also includes ranking the set of content items based on the respective scores and providing recommendation information to the user for one or more highest ranked content items in the set of content items.Type: ApplicationFiled: September 22, 2023Publication date: April 11, 2024Inventors: Daniel RUSSO, Yu ZHAO, Lucas MAYSTRE, Shubham BANSAL, Sonia BHASKAR, Tiffany WU, David GUSTAFSSON, David BREDESEN, Roberto SANCHIS OJEDA, Tony JEBARA
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Patent number: 11899100Abstract: A method of determination of the alignment angles of two or more road vehicle (1) borne radar sensors (4) for a road vehicle radar auto-alignment controller (3) starting from initially available rough estimates of alignment angles. From at least two radar sensors (4) are obtained signals related to range, azimuth and range rate to detections. The detections are screened (5) to determine detections from stationary targets. From the determined detections from stationary targets is derived a linearized signal processing model involving alignment angles, longitudinal and lateral velocity and yaw-rate of the road vehicle (1). A filter algorithm is applied to estimate the alignment angles. Based on the estimated alignment angles are produced signals suitable for causing a road vehicle (1) radar auto-alignment controller (3) to perform radar offset compensation.Type: GrantFiled: June 18, 2020Date of Patent: February 13, 2024Assignee: Zenuity ABInventors: Tony Gustafsson, Joakim Sörstedt
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Publication number: 20230322236Abstract: A method performed by a vehicle pose assessment system for supporting determining a pose of a vehicle in view of a digital map. The approach provided by the method alleviates finding lane segments of the digital map corresponding to current sensor detections, which in turn may support accurate and/or improved vehicle localization. An apparatus and computer storage medium for supporting determining a pose of a vehicle in view of a digital map are also provided.Type: ApplicationFiled: March 30, 2023Publication date: October 12, 2023Inventors: Junsheng FU, Axel BEAUVISAGE, Blazej SLUSAREK, Eduardo Sesma CASELLES, Pontus KIELÉN, Markus HAMMARSTEN, Tony GUSTAFSSON, Eiliv HÄGG
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Patent number: 11578991Abstract: A method and control system for generating and updating digital maps using a plurality of passages along a road portion by at least one road vehicle is provided. The method comprises obtaining positioning data and sensor data of each passage from the at least one road vehicle. Further, the method comprises forming a sub-map representation of the surrounding environment at each obtained longitudinal position based on the obtained sensor data, and estimating a longitudinal error for each obtained longitudinal position within each segment. Furthermore, the method comprises determining a new plurality of longitudinal positions of each road vehicle for each passage by applying the estimated longitudinal error on each corresponding obtained longitudinal position, and applying the determined new plurality of longitudinal positions on associated sensor data in order to generate a first layer of a map representation of the surrounding environment along the road portion.Type: GrantFiled: December 18, 2020Date of Patent: February 14, 2023Assignee: Zenuity ABInventors: Tony Gustafsson, Joakim Lin Sörstedt
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Patent number: 11555705Abstract: A method, system and computer program product for determining a map position of an ego-vehicle are disclosed. The method includes acquiring map data comprising a road geometry, initializing at least one dynamic landmark by measuring a position and velocity, relative to the ego-vehicle, of a surrounding vehicle, and determining a first map position of the surrounding vehicle based on this measurement and the geographical position of the ego-vehicle. Further, the method includes predicting a second map position of the surrounding vehicle, and measuring a location, relative to the ego-vehicle, of the surrounding vehicle when it is estimated to be at the second map position, whereby the geographical position of the ego-vehicle can be computed and updated.Type: GrantFiled: October 17, 2019Date of Patent: January 17, 2023Assignee: Zenuity ABInventors: Joakim Lin Sörstedt, Andreas Schindler, Tony Gustafsson
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Publication number: 20220205804Abstract: The present disclosure relates to a method for determining a vehicle pose, predicting a pose (xk, yk, ?k) of vehicle on a map based on sensor data acquired by a vehicle localization system, transforming a set of map road references of a segment of a digital map from a global coordinate system to an image-frame coordinate system of a vehicle-mounted camera based on map data and predicted pose of the vehicle. The transformed set of map road references form a set of polylines in image-frame coordinate system. Identifying a set of corresponding image road reference features in an image acquired by vehicle mounted camera, where each identified road references feature defines a set of measurement coordinates (xi, yi) in image-frame. Projecting each of identified set of image road reference features onto formed set of polylines in order to obtain a set of projection points.Type: ApplicationFiled: December 27, 2021Publication date: June 30, 2022Inventors: Junsheng FU, Han ZHANG, Tony GUSTAFSSON, Andreas SCHINDLER, Eduardo SESMA CASELLES, Erik STEINMETZ, Pontus KIELÉN, Axel BEAUVISAGE, Joakim LIN SÖRSTEDT
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Patent number: 11237005Abstract: Described herein is a method and arrangement (11) for sourcing of location information, generating and updating maps (16) representing the location. From at least two road vehicle (12) passages at the location is obtained (1, 2) vehicle registered data on the surrounding environment from environment sensors and positioning data from consumer-grade satellite positioning arrangements and from at least one of an inertial measurement unit and a wheel speed sensor. The positioning data is smoothed (3) to establish continuous trajectories for the respective vehicles (12). Individual surrounding environment maps are created using the data from each respective vehicle (12) passage at the location. From the individual surrounding environment maps are identified submaps (15) sharing area segments. Pairs of submaps (15) sharing area segments are cross-correlated (6).Type: GrantFiled: August 30, 2019Date of Patent: February 1, 2022Assignee: ZENUITY ABInventors: Tony Gustafsson, Joakim Sörstedt, Erik Stenborg, Mats Kvarnström, Roza Maghsood, Andreas Löfman, Linlin Guo
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Publication number: 20210190537Abstract: A method and control system for generating and updating digital maps using a plurality of passages along a road portion by at least one road vehicle is provided. The method comprises obtaining positioning data and sensor data of each passage from the at least one road vehicle. Further, the method comprises forming a sub-map representation of the surrounding environment at each obtained longitudinal position based on the obtained sensor data, and estimating a longitudinal error for each obtained longitudinal position within each segment. Furthermore, the method comprises determining a new plurality of longitudinal positions of each road vehicle for each passage by applying the estimated longitudinal error on each corresponding obtained longitudinal position, and applying the determined new plurality of longitudinal positions on associated sensor data in order to generate a first layer of a map representation of the surrounding environment along the road portion.Type: ApplicationFiled: December 18, 2020Publication date: June 24, 2021Inventors: Tony GUSTAFSSON, Joakim LIN SÖRSTEDT
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Publication number: 20200400814Abstract: A method of determination of the alignment angles of two or more road vehicle (1) borne radar sensors (4) for a road vehicle radar auto-alignment controller (3) starting from initially available rough estimates of alignment angles. From at least two radar sensors (4) are obtained signals related to range, azimuth and range rate to detections. The detections are screened (5) to determine detections from stationary targets. From the determined detections from stationary targets is derived a linearized signal processing model involving alignment angles, longitudinal and lateral velocity and yaw-rate of the road vehicle (1). A filter algorithm is applied to estimate the alignment angles. Based on the estimated alignment angles are produced signals suitable for causing a road vehicle (1) radar auto-alignment controller (3) to perform radar offset compensation.Type: ApplicationFiled: June 18, 2020Publication date: December 24, 2020Applicant: Zenuity ABInventors: Tony GUSTAFSSON, Joakim SÖRSTEDT
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Patent number: 10775294Abstract: A method is described for determining a friction estimate between a road surface and a tire of a vehicle, the tire being arranged on a steerable wheel of the vehicle, and the vehicle having an axle rack pivotably attached to a linkage arm connected to the steerable wheel such that a translational motion of the axle rack causes the linkage arm to rotate about a kingpin element such that the linkage arm causes a turning motion of the steerable wheel. The method includes acquiring a plurality of rack force values; acquiring a plurality of lateral wheel force values; mapping a relation between the plurality of rack force values and the lateral wheel force values to a model; and determining the lateral friction estimate based on the mapping.Type: GrantFiled: October 6, 2017Date of Patent: September 15, 2020Assignee: VOLVO CAR CORPORATIONInventors: Mats Skold, Tony Gustafsson, Henrik Gullven
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Patent number: 10703406Abstract: A method in a vehicle for determining road properties is described. The method includes: acquiring vehicle acceleration in x, y and z directions; acquiring a rack force; acquiring a wheel speed for each of all four wheels; determining a wheel speed energy based on the wheel speed; determining a wheel slip of all four wheels of the vehicle based on a respective wheel speed of the wheel; determining an acceleration energy in each of the x, y and z-directions based on the vehicle acceleration and the vehicle speed; determining a rack force energy based on the detected rack force; and determining road properties based on the wheel speed energy, rack force energy and vehicle speed. A system is also described for performing the method.Type: GrantFiled: October 6, 2017Date of Patent: July 7, 2020Assignee: VOLVO CAR CORPORATIONInventors: Henrik Gullven, Tony Gustafsson, Mats Skold
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Patent number: 10632978Abstract: There is provided a method for estimating friction between a tire of a vehicle and a road surface, the method comprising acquiring, a front wheel axle torque, a rear wheel axle torque, a vehicle longitudinal acceleration, a vehicle pitch rate and wheel rotational velocities. The method further comprises determining a front wheel normal force and a rear wheel normal force, based on a center of gravity of the vehicle and the longitudinal acceleration; determining a longitudinal tire stiffness, jointly determining a vehicle longitudinal velocity, based on the wheel rotational velocities and vehicle longitudinal acceleration, and a vehicle pitch angle relative to the horizontal plane based on the vehicle pitch rate; and determining a friction coefficient between tires and ground based on the front and rear wheel axle torque, the front wheel normal force and the joint estimation of pitch angle and vehicle longitudinal velocity. There is also provided a system for performing the described method.Type: GrantFiled: October 6, 2017Date of Patent: April 28, 2020Assignee: VOLVO CAR CORPORATIONInventors: Tony Gustafsson, Mats Jonasson
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Publication number: 20200124422Abstract: A method, system and computer program product for determining a map position of an ego-vehicle are disclosed. The method includes acquiring map data comprising a road geometry, initializing at least one dynamic landmark by measuring a position and velocity, relative to the ego-vehicle, of a surrounding vehicle, and determining a first map position of the surrounding vehicle based on this measurement and the geographical position of the ego-vehicle. Further, the method includes predicting a second map position of the surrounding vehicle, and measuring a location, relative to the ego-vehicle, of the surrounding vehicle when it is estimated to be at the second map position, whereby the geographical position of the ego-vehicle can be computed and updated.Type: ApplicationFiled: October 17, 2019Publication date: April 23, 2020Inventors: Joakim LIN SÖRSTEDT, Andreas SCHINDLER, Tony GUSTAFSSON
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Publication number: 20200072620Abstract: Described herein is a method and arrangement (11) for sourcing of location information, generating and updating maps (16) representing the location. From at least two road vehicle (12) passages at the location is obtained (1, 2) vehicle registered data on the surrounding environment from environment sensors and positioning data from consumer-grade satellite positioning arrangements and from at least one of an inertial measurement unit and a wheel speed sensor. The positioning data is smoothed (3) to establish continuous trajectories for the respective vehicles (12). Individual surrounding environment maps are created using the data from each respective vehicle (12) passage at the location. From the individual surrounding environment maps are identified submaps (15) sharing area segments. Pairs of submaps (15) sharing area segments are cross-correlated (6).Type: ApplicationFiled: August 30, 2019Publication date: March 5, 2020Applicant: ZENUITY ABInventors: Tony Gustafsson, Joakim Sörstedt, Erik Stenborg, Mats Kvarnström, Roza Maghsood, Andreas Löfman, Linlin Guo
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Patent number: 10144433Abstract: The present disclosure relates to a method and arrangement for estimating a friction coefficient (?i) between tires of a wheeled two-axis two-track road vehicle and the ground. If the longitudinal velocity ?x of the vehicle is above a first threshold ?xthres and the wheel angle ?f and/or the yaw rate ?z are/is below a second threshold ?thres/?zthres, a positive torque is applied to both wheels on a first axle and an and opposite, negative torque, to both wheels on a second axle while following driver requested longitudinal vehicle acceleration (ax). Wheel speeds ?i are measured and tire forces (fi) estimated. The friction coefficient (?i) between the tires and the ground are estimated from the measured wheel speeds ?i and the estimated tire forces (fi). The estimated friction coefficient (?i) is made available to other vehicle systems.Type: GrantFiled: June 9, 2016Date of Patent: December 4, 2018Assignee: VOLVO CAR CORPORATIONInventors: Mats Jonasson, Tony Gustafsson, Anton Albinsson, Frederik Hans Bruzelius
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Patent number: 10124809Abstract: A method, arrangement and system are described for estimating one or more vehicle cornering stiffness parameters (cf, cr) in a linear vehicle operating region. The method includes reading sensor data representative of at least vehicle (1) longitudinal velocity (vx), vehicle lateral acceleration (ay), vehicle yaw rate (?z) and vehicle steering angle (?), determining from the read sensor data if the cornering stiffness parameters (cf, cr) are observable, and if so providing an estimate of the cornering stiffness parameters (cf, cr) using a bicycle model that includes a model of tire relaxation dynamics.Type: GrantFiled: February 12, 2016Date of Patent: November 13, 2018Assignee: Volvo Car CorporationInventors: Mikael Thor, Tony Gustafsson
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Publication number: 20180106714Abstract: A method is described for determining a friction estimate between a road surface and a tire of a vehicle, the tire being arranged on a steerable wheel of the vehicle, and the vehicle having an axle rack pivotably attached to a linkage arm connected to the steerable wheel such that a translational motion of the axle rack causes the linkage arm to rotate about a kingpin element such that the linkage arm causes a turning motion of the steerable wheel. The method includes acquiring a plurality of rack force values; acquiring a plurality of lateral wheel force values; mapping a relation between the plurality of rack force values and the lateral wheel force values to a model; and determining the lateral friction estimate based on the mapping.Type: ApplicationFiled: October 6, 2017Publication date: April 19, 2018Applicant: VOLVO CAR CORPORATIONInventors: Mats SKOLD, Tony GUSTAFSSON, Henrik GULLVEN
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Publication number: 20180105151Abstract: There is provided a method for estimating friction between a tire of a vehicle and a road surface, the method comprising acquiring, a front wheel axle torque, a rear wheel axle torque, a vehicle longitudinal acceleration, a vehicle pitch rate and wheel rotational velocities. The method further comprises determining a front wheel normal force and a rear wheel normal force, based on a center of gravity of the vehicle and the longitudinal acceleration; determining a longitudinal tire stiffness, jointly determining a vehicle longitudinal velocity, based on the wheel rotational velocities and vehicle longitudinal acceleration, and a vehicle pitch angle relative to the horizontal plane based on the vehicle pitch rate; and determining a friction coefficient between tires and ground based on the front and rear wheel axle torque, the front wheel normal force and the joint estimation of pitch angle and vehicle longitudinal velocity. There is also provided a system for performing the described method.Type: ApplicationFiled: October 6, 2017Publication date: April 19, 2018Applicant: VOLVO CAR CORPORATIONInventors: Tony GUSTAFSSON, Mats JONASSON
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Publication number: 20180105206Abstract: A method in a vehicle for determining road properties is described. The method includes: acquiring vehicle acceleration in x, y and z directions; acquiring a rack force; acquiring a wheel speed for each of all four wheels; determining a wheel speed energy based on the wheel speed; determining a wheel slip of all four wheels of the vehicle based on a respective wheel speed of the wheel; determining an acceleration energy in each of the x, y and z-directions based on the vehicle acceleration and the vehicle speed; determining a rack force energy based on the detected rack force; and determining road properties based on the wheel speed energy, rack force energy and vehicle speed. A system is also described for performing the method.Type: ApplicationFiled: October 6, 2017Publication date: April 19, 2018Applicant: VOLVO CAR CORPORATIONInventors: Henrik GULLVEN, Tony GUSTAFSSON, Mats SKOLD
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Patent number: 9712121Abstract: This disclosure provides a circuit for linearizing an output signal Sout produced by a non-linear component based on an input signal x(n). The circuit comprises a primary pre-distorter module configured to generate a pre-distorted signal y(n) based on the input signal x(n) and a primary pre-distortion function parameterized by a pre-distortion parameter ? and to feed the pre-distorted signal y(n) to the non-linear component. The circuit comprises an estimation module. The estimation module is configured to receive samples z(n) of the output signal Sout, and to determine the pre-distortion parameter ?. The estimation module comprises a secondary pre-distorter module configured to generate a secondary pre-distorter output signal r(n) based on a secondary pre-distortion function and the samples z(n) of the output signal Sout.Type: GrantFiled: November 22, 2014Date of Patent: July 18, 2017Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)Inventors: Bjorn Gavert, Tony Gustafsson