Alarm system
US4991123A · kind A · utility
37Cited by
7References
29Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 6, 1989 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Jan 6, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B25/04
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The invention is a control system comprising a plurality of sensor units, a plurality of output units, and a central processing unit coupled via a data/address bus. Each peripheral unit, i.e. sensor unit or output unit, includes an EEPROM, the Op-code protocol of which is used to provide all addressing and data protocol necessary to support system communication over the bus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.