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:
Feb. 04, 2014
Filed:
Jan. 19, 2007
Gerd Reime, Buehl, DE;
Peter Langer, Karlsruhe-Durlach, DE;
Bernd Mayer, Ellwangen, DE;
Mechaless Systems GmbH, Bruchsal, DE;
Abstract
A method for measuring the transmit time of light, in particular for cameras. A first light signal is clocked by a first clock controller, input into a light system and reflected back to a receiver photodiode, which determines a reception signal as a result of the first light signal. A further light signal clocked by a further clock controller inputs the photodiode at an angle to the first light signal and is mixed at the photodiode with the first light signal to form a common reception signal, which is filtered with a filter whose frequency response corresponds to the frequency of the clock difference to form a filter signal, the first and further clock signals are also mixed in a mixer to form a mixed signal and the phase shift between the mixed signal and the filter signal is used to determine the transit time of light.