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:
Feb. 11, 1992
Filed:
Aug. 12, 1982
Christoph Grauel, Feucht, DE;
Werner Schmidt, Heroldsberg, DE;
Philips Kommunikations Industrie Aktiengesellschaft, Nuremberg, DE;
Abstract
In a communications system with a plurality of subscriber stations independent from each other, where each subscriber station can access according to a multiple access method a joint duplex transmission channel, the probability becomes very large for simultaneous attempts to get access and thereby the probability of signal destruction becomes particularly large. In order to avoid a blockage of the service channel each subscriber station occupies the duplex transmission channel with a short access signal for initiating a transmission starting with the subscriber station. The subscriber station characterized by the position in time and/or the information contents of the signalling short designation call is thereupon invited by the central base station to provide complete identification information.