Communication path integrity supervision in a network system for automatic alarm data communication
US6040770A · kind A · utility
Inventor
Key dates
| Filing date | Sep 4, 1998 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Sep 4, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B25/004
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A communication path integrity supervision system is provided in a network system that allows communication of automatic alarm data. This involves a network, needless to say, in which a plurality of automatic alarm data transmitters are linked by diverse paths with at at least one central receiver on the network for receiving the automatic alarm data. In this integrity supervision system, the responsibility for carrying out the integrity supervision functions have been largely shifted onto the remote transmitters--each responsible for its own path or paths--and shifted away from the central receiver to the extent required by the prior art "receiver-polling" protocol. That is, each transmitter includes circuits for generating and sending to the central receiver a succession of "next promised check-in" messages, to be on schedule as promised. The central receiver responds to the reception of each such message by updating a table of such messages, scheduling or rescheduling the promised occurrence for the next check-in message as applicable to that particular remote transmitter. The central receiver is further configured with an alert signal for signaling whenever any remote transmitt…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.