US 12,306,301 B2
Determining positional information of an object in space
David Holz, San Francisco, CA (US)
Assigned to Ultrahaptics IP Two Limited, Bristol (GB)
Filed by Ultrahaptics IP Two Limited, Bristol (GB)
Filed on May 16, 2023, as Appl. No. 18/197,961.
Application 18/197,961 is a continuation of application No. 16/799,598, filed on Feb. 24, 2020, granted, now 11,693,115.
Application 16/799,598 is a continuation of application No. 15/936,185, filed on Mar. 26, 2018, granted, now 10,585,193, issued on Mar. 10, 2020.
Application 15/936,185 is a continuation of application No. 15/625,856, filed on Jun. 16, 2017, granted, now 9,927,522, issued on Mar. 27, 2018.
Application 15/625,856 is a continuation of application No. 14/214,605, filed on Mar. 14, 2014, granted, now 9,702,977, issued on Jul. 11, 2017.
Claims priority of provisional application 61/801,479, filed on Mar. 15, 2013.
Claims priority of provisional application 61/800,327, filed on Mar. 15, 2013.
Claims priority of provisional application 61/792,025, filed on Mar. 15, 2013.
Prior Publication US 2023/0288563 A1, Sep. 14, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G01S 17/36 (2006.01); G01S 7/481 (2006.01); G01S 7/483 (2006.01); G01S 17/00 (2020.01); G01S 17/04 (2020.01); G01S 17/42 (2006.01); G01S 17/48 (2006.01); G01S 17/89 (2020.01)
CPC G01S 17/36 (2013.01) [G01S 7/4815 (2013.01); G01S 7/483 (2013.01); G01S 17/003 (2013.01); G01S 17/04 (2020.01); G01S 17/42 (2013.01); G01S 17/48 (2013.01); G01S 17/89 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of determining positional information of a target object in a region of space within range of a light sensitive sensor attached to an automobile, the method including:
illuminating a region of space monitored by, and relative to, a light sensitive sensor attached to the automobile with a plurality of non-coplanar light sources, the plurality of light sources being mounted to the automobile and having a known geometric relationship;
changing illumination intensity selectively over time for more than one of the plurality of light sources;
measuring, using the light sensitive sensor during a time period in which the illumination intensity is changing, returning light that is reflected from the target object as the target object moves through the region of space monitored by the light sensitive sensor;
comparing the measured returning light to a look-up table that comprises mappings of measurements from each pixel of the light sensitive sensor to a corresponding incoming angle of light; and
determining positional information for the target object using the incoming angle of light.