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:
Sep. 15, 2009
Filed:
Mar. 16, 2005
Applicant:
Ulrich Friedrich, Ellhofen, DE;
Inventor:
Ulrich Friedrich, Ellhofen, DE;
Assignee:
ATMEL Germany GmbH, Heilbronn, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 3/46 (2006.01); H04L 7/02 (2006.01); H04Q 5/22 (2006.01); H03K 7/08 (2006.01); H02M 3/24 (2006.01); H04J 3/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and device for wireless data transmission between a base station and one or more transponders, in which electromagnetic carrier waves are emitted by the base station and symbols are transmitted from a given transponder to the base station by modulation and backscattering of the electromagnetic carrier waves, wherein a change in a modulation state takes place synchronously with synchronization markers transmitted by the base station. A change in the modulation state is carried out by a transponder with a specifiable time delay that is relative to the synchronization markers.