Logic interchange system
US4808994A · kind A · utility
48Cited by
13References
9Claims
0Family size
Inventor
Key dates
| Filing date | Aug 27, 1987 |
| Grant date | Feb 28, 1989 |
| Priority date | — |
| Expiry date | Aug 27, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0008
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system for remotely controlling electrical devices includes a plurality of identical modules which can be made as multiple copies of an integrated circuit chip. Each chip includes logic for recognizing a code, the logic being programmable by EEPROMs so that each chip can be set to recognize a unique address code. The modules can be connected to input or output devices, or both. All modules are interconnected by no more than four wires. A clock pulse source is connected to the system, the source being periodically interrupted to synchronize the system when the clock pulses restart.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.