Wireless paging receiver
US4110743A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 14, 1976 |
| Grant date | Aug 29, 1978 |
| Priority date | — |
| Expiry date | Sep 14, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W68/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.