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:
Nov. 25, 1980
Filed:
Dec. 15, 1978
Erich Burger, Unterpfaffenhofen, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
A circuit arrangement is disclosed for correcting frequency errors during a transmission of data by means of data signals which are modulated according to a frequency-differential phase modulation. The circuit arrangement corrects frequency errors which occur during the transmission of the data signals from a data transmitter to a data receiver. The data receiver contains a regulating stage inside which the data signals are converted with the assistance of mixed signals. A repetition frequency of the mixed signals is regulated with the assistance of a first regulating unit performing a fine regulation and a second regulating unit performing a coarse regulation in such a way that frequency errors of the data signals are corrected. A regulator generates the mixed signals from timing pulses of given repetition frequency with the assistance of frequency multipliers. The frequency multipliers are controlled by regulating signals which optionally switch through a selection unit to the regulator from either the first regulating unit or the second regulating unit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile