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:
Aug. 29, 1978
Filed:
Sep. 14, 1976
Hans Zahnd, Bern, CH;
Hasler AG, Bern, CH;
Abstract
A wireless paging receiver to be called up individually or as member of a group of receivers by a binary modulated carrier frequency call telegram. Each call telegram contains an address. Each individual address is composed by code words selected from a certain number of patterns. In a group call address one or more code words are replaced by a group call pattern, so that all receivers are called whose addresses contain the remaining code word patterns. For coding the address in the receiver only one connection must be positioned for each address code word. Messages can be transmitted with the call telegram and different call signals of different lengths generated. A parity check of the received call telegram is performed with little additional material.