Paging system with improved acknowledge-back capabilities
US4940963A · kind A · utility
212Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1989 |
| Grant date | Jul 10, 1990 |
| Priority date | — |
| Expiry date | Mar 10, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/025
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A paging system comprising a centrally located terminal and a plurality of remote pager units is disclosed wherein both automatic and manual acknowledge back signalling is provided. An appropriate acknowledge back signal by a called pager within a set interval indicates the message was duly receivied and understood which is so indicated to the initiating caller. Failure to respond within the set interval causes the pager unit to send back a negative response which is likewise so indicated to the initiating caller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.