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:
Jun. 21, 1983
Filed:
Sep. 12, 1980
Hagen Hofmeister, Korb, DE;
Licentia Patent-Verwaltungs-GmbH, Frankfurt am Main, DE;
Abstract
A method for simultaneously transmitting a plurality of data streams over one transmission channel with the aid of modems, wherein in order to synchronize the receiver for the purpose of device-specific modulation, a small additional modulation is applied in the transmitter, with the frequency of the additional modulation being equal to the transmitter modulation rate divided by a whole number, and the additional modulation is demodulated in the receiver by multiplying the associated values obtained from the scanning clock pulse by the difference between the associated and actual values received, and the resulting parameter is freed of interference with the aid of a band pass filter or a phase control loop.