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. 14, 2012
Filed:
Jun. 14, 2007
Hubert Bode, Haar, DE;
Andreas Laudenbach, Haag, DE;
Andreas Roth, Guenzenhausen, DE;
Engelbert Wittich, Wartenberg, DE;
Hubert Bode, Haar, DE;
Andreas Laudenbach, Haag, DE;
Andreas Roth, Guenzenhausen, DE;
Engelbert Wittich, Wartenberg, DE;
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
A circuit arrangement for detecting unwanted signals on a clock signal comprises an input for receiving the clock signal, and a Phase Lock Loop PLL circuit having a reference input coupled to the input of the circuit arrangement for receiving the clock signal and an output for providing a PLL output signal. The circuit arrangement further comprises a detector coupled to the output of the PLL circuit and to the input of the circuit arrangement. The detector is arranged to identify correct transitions in the clock signal using the PLL output signal, and to remove incorrect transitions due to unwanted signals from the clock signal so as to provide a filtered clock signal at an output of the circuit arrangement.