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. 21, 2018
Filed:
Oct. 06, 2015
Applicant:
Analog Devices, Inc., Norwood, MA (US);
Inventor:
Erik D. Barnes, Cambridge, MA (US);
Assignee:
ANALOG DEVICES, INC., Norwood, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 7/48 (2006.01); G01S 7/486 (2006.01); H04N 13/214 (2018.01); G01S 17/10 (2006.01); G01S 17/89 (2006.01); G01S 7/484 (2006.01); G01S 7/497 (2006.01); H04N 5/232 (2006.01); H04N 5/372 (2011.01); H04N 13/02 (2006.01);
U.S. Cl.
CPC ...
G01S 7/4865 (2013.01); G01S 7/484 (2013.01); G01S 7/486 (2013.01); G01S 7/497 (2013.01); G01S 17/10 (2013.01); G01S 17/89 (2013.01); H04N 5/23222 (2013.01); H04N 5/372 (2013.01); H04N 13/0214 (2013.01); H04N 13/214 (2018.05); G06T 2207/10028 (2013.01); G06T 2207/30232 (2013.01);
Abstract
Methods, apparatuses, and systems can be provided to implement active feedback to electrically sense or monitor the illumination and shutter pulses and adjust them actively to maintain the desired phase relationship/difference between the pulses. By maintaining the desired phase difference, the distance calculation can be made more accurate, even when conditions of the time-of-flight camera varies (e.g., temperature, aging, etc.). Advantageously, active compensation can correct for errors 'on-the-fly', eliminating detailed characterization and manual adjustment during operation.