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:
Oct. 20, 2015
Filed:
May. 20, 2014
National Chi Nan University, Puli, Nantou, TW;
NATIONAL CHI NAN UNIVERSITY, Puli, Nantou, TW;
Abstract
A frequency-shift keying (FSK) receiver includes an injection-locking oscillating circuit to receive a FSK input signal, and a phase detecting circuit. The injection-locking oscillating circuit outputs a locked signal having a phase that tracks a phase of the FSK input signal. A difference between the phases of the FSK input signal and the locked signal is associated with a difference between a frequency of the FSK input signal and a free-running frequency of the injection-locking oscillating circuit. The phase detecting circuit receives the FSK input signal and the locked signal, and outputs a baseband logic signal according to the difference between the phases of the FSK input signal and the locked signal.