System for communication between a central controller and items in a factory using infrared light
US5742238A · kind A · utility
75Cited by
40References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 1, 1995 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Sep 1, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system using microterminals attached to work pieces, containers and workers for tracking the location of work in a factory and for communication with workers to provide instructions for further processing. A central control system, to which infrared transceivers strategically located throughout the factory are wired, communicates with the microterminals via infrared transmissions between the microterminals and transceivers. The microterminals have four modes of operation to extend battery life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.