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:
Nov. 10, 2009
Filed:
Dec. 06, 2005
Uwe Konzelmann, Asperg, DE;
Tobias Lang, Stuttgart, DE;
Sami Radwan, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
For determining the transit time of an ultrasonic signal from an ultrasonic sensor that was launched into a measurement path by an ultrasonic converter, the phase shift of the ultrasonic signal is determined relative to a reference timing signal, and a remainder is determined as a measure of the transit time of the ultrasonic signal so that the phase shift is determined using a quadrature demodulation scheme, with which the received ultrasonic signal is inverted, in a segmented manner, using a timing signal and a phase-shifted timing signal, and the remainder is determined based on a characteristic quantity of the ultrasonic signal.