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:
Dec. 30, 2003
Filed:
Nov. 24, 1999
Applicant:
Inventor:
Gonzalo Lucioni, Witten, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03D 3/00 ; H04L 2/714 ;
U.S. Cl.
CPC ...
H03D 3/00 ; H04L 2/714 ;
Abstract
A method and an apparatus are described for recovering a payload signal from an FSK signal that has been modulated by frequency shift keying. From the modulated signal a discrete-time series of sampled values are determined for which the phase difference relative to a preceding sampled value is respectively determined as well. The method and the apparatus can be used in a digital PBX to which the modulated signal is fed via an analog telephone network.
Lucioni, Gonzalo. (2003). Method and apparatus for recovering a payload signal from a signal that has been modulated by frequency shift keying (U.S. Patent No. 6671333). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6671333
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