Wand turn-on control
US4072859A · kind A · utility
113Cited by
4References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1976 |
| Grant date | Feb 7, 1978 |
| Priority date | — |
| Expiry date | Oct 4, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2207/1018
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a control circuit used to conserve power in a portable optical recognition system. When the system is not being used or between actual scans of the reading electronics, power is supplied only to those circuits required to control power to the system and to permit sequence reading of items. An infrared signal is emitted from the reading device and when a document or other item to be read is scanned the infrared signal is reflected back into the scan unit and is detected, thereby sensing that a document is being read and turning the system on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.