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.

Date of Patent:
Jun. 04, 2024

Filed:

May. 10, 2021
Applicant:

Analog Devices International Unlimited Company, Limerick, IE;

Inventors:

Jonathan Ephraim David Hurwitz, Edinburgh, GB;

Krystian Balicki, Wrzesnia, PL;

Eoin E. English, Pallasgreen, IE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 17/894 (2020.01); G01B 11/22 (2006.01); G01S 7/481 (2006.01); G01S 7/4911 (2020.01); H04N 25/44 (2023.01); H04N 25/46 (2023.01); H04N 25/709 (2023.01); H04N 25/75 (2023.01);
U.S. Cl.
CPC ...
G01S 17/894 (2020.01); G01B 11/22 (2013.01); G01S 7/4814 (2013.01); G01S 7/4816 (2013.01); G01S 7/4911 (2013.01); H04N 25/44 (2023.01); H04N 25/46 (2023.01); H04N 25/709 (2023.01); H04N 25/75 (2023.01);
Abstract

Systems and methods for a lower energy/faster time of flight camera system configured to measure distance to an object. The system is configured to emit laser light modulated with a first frequency and image light reflected by an object in order to determine a first phase difference between the emitted and reflected light. The system emits laser light modulated with a second frequency and images light reflected by the object to determine a second phase difference between the emitted and reflected light. The distance to the object is determined using the first and second phase differences. The system is arranged to operate at lower energy for obtaining the first phase difference compared with the operation to obtain the second phase difference. This results in lower overall energy consumption and faster overall operation without any significant reduction in accuracy of imaging.


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