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.

Date of Patent:
Aug. 08, 2017

Filed:

Dec. 28, 2016
Applicant:

Texas Instruments Deutschland Gmbh, Freising, DE;

Inventor:

Ernst Georg Muellner, Munich, DE;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/38 (2015.01); H04L 25/03 (2006.01); H03K 3/356 (2006.01); G07C 9/00 (2006.01); B60R 25/20 (2013.01);
U.S. Cl.
CPC ...
H04L 25/03834 (2013.01); B60R 25/2063 (2013.01); G07C 9/00007 (2013.01); H03K 3/356017 (2013.01); B60R 2325/10 (2013.01);
Abstract

Circuitry includes: a resonant circuit for receiving a radio frequency signal; a rectifier outputting a first rectified signal matching a portion of the radio frequency signal and a second rectified signal having portion that matches the radio frequency signal and is out of phase with the first rectified signal; a clock regenerator circuit outputting a clock waveform corresponding to the first and second rectified signals; an oscillator timing circuit forming a first sloped waveform having a linear slope and a second sloped waveform having a linear slope, and comparators to compare the first sloped waveform and the second sloped waveform. The oscillator timing circuit outputs a master clock signal having transitions when the first and the second sloped waveform have equal magnitudes. A pluck pulse generator forms a pulse of a predetermined length when the master clock signal transitions.


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