The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 14, 2018
Filed:
Jan. 20, 2016
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Shahram Izadi, Cambridge, GB;
David Molyneaux, Oldham, GB;
Otmar Hilliges, Cambridge, GB;
David Kim, Cambridge, GB;
Jamie Daniel Joseph Shotton, Cambridge, GB;
Stephen Edward Hodges, Cambridge, GB;
David Alexander Butler, Cambridge, GB;
Andrew Fitzgibbon, Cambridge, GB;
Pushmeet Kohli, Cambridge, GB;
MICROSOFT TECHNOLOGY LICENSING, LLC, Redmond, WA (US);
Abstract
Systems and methods for reducing interference between multiple infra-red depth cameras are described. In an embodiment, the system comprises multiple infra-red sources, each of which projects a structured light pattern into the environment. A controller is used to control the sources in order to reduce the interference caused by overlapping light patterns. Various methods are described including: cycling between the different sources, where the cycle used may be fixed or may change dynamically based on the scene detected using the cameras; setting the wavelength of each source so that overlapping patterns are at different wavelengths; moving source-camera pairs in independent motion patterns; and adjusting the shape of the projected light patterns to minimize overlap. These methods may also be combined in any way. In another embodiment, the system comprises a single source and a mirror system is used to cast the projected structured light pattern around the environment.