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:
Sep. 22, 1987
Filed:
Jul. 26, 1984
Gero H Schollmeier, Gauting, DE;
Heinrich Sailer, Neuried, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
For the compensation of echo signals occuring in the course of the duplex transmission of digital signals by the dual channel system in signal transmission equipment provided with an echo compensator, the equipment is designed so that the clock pulses emitted by a timing generator for the transmission of the digital signals can be shifted in phase by predetermined phase grid steps. When a change in the phase position of the clock pulses takes place within one phase grid step, correction signals are generated, with the phase position that has been accurately set in each case being maintained. These correction signals are subtracted, together with the compensation signals emitted by the echo compensator for the compensation of the echo signals, from the digital signals received together with the echo signals.