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. 19, 2013
Filed:
Mar. 26, 2010
Applicants:
Klaus-dieter Langer, Berlin, DE;
Joachim Walewski, Unterhaching, DE;
Inventors:
Klaus-Dieter Langer, Berlin, DE;
Joachim Walewski, Unterhaching, DE;
Assignees:
Siemens Aktiengesellschaft, Munich, DE;
Fraunhofer Gesellscaft zur Forderung der Angewandten Forschung E.V., Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 10/00 (2013.01); H04B 10/04 (2013.01);
U.S. Cl.
CPC ...
Abstract
In a method and an apparatus for the optical transmission of data by a pulse-width modulated light source (LED), in which a set dimming factor (N) is replaced with a cycle-dependent dimming factor (NI), the cycle-dependent dimming factor is modulated for encoding the data to be transmitted and corresponds to the set dimming factor over a time interval which is resolvable for the human eye.