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. 09, 2016
Filed:
Sep. 23, 2014
Infineon Technologies Ag, Neubiberg, DE;
Infineon Technologies AG, Neubiberg, DE;
Abstract
A detector for detecting a locked state and an out-of-lock state of a phase locked loop includes an out-of-lock detector circuit that receives a reference signal and an input signal representing a PLL oscillator signal. The out-of-lock detector detects an out-of-lock state of the PLL and generates an out-of-lock signal indicating whether an out-of-lock state is detected. The detector further includes a lock detector circuit that receives the reference signal and the input signal, detects a locked state of the PLL, and generates a lock signal indicating whether a locked state is detected. A logic circuit receives both the out-of-lock signal and the lock signal and combines both signals to obtain an output signal indicative of whether the PLL is in a locked state or an out-of-lock state.