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:
Apr. 28, 2020
Filed:
Mar. 09, 2017
Applicant:
Chirp Microsystems, Inc., Berkeley, CA (US);
Inventor:
Richard J. Przybyla, Berkeley, CA (US);
Assignee:
CHIRP MICROSYSTEMS, Bereley, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01F 23/296 (2006.01);
U.S. Cl.
CPC ...
G01F 23/2962 (2013.01);
Abstract
An ultrasonic transceiver can detect the presence of nearby moving objects while rejecting signals from stationary targets and from transmitter signal feedthrough. Data corresponding to received ultrasound signals are stored in a digital memory. For each sample in a measurement, a difference is calculated between corresponding samples in the stored data corresponding to received signals for current and previous measurements to estimate a time of flight to a moving object.