Hand operated optical character recognition wand
US3947817A · kind A · utility
51Cited by
4References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 22, 1974 |
| Grant date | Mar 30, 1976 |
| Priority date | — |
| Expiry date | Apr 22, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2207/1018
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical data reader and processor utilizing a two dimensional array of photosensitive elements operated at a high frame rate; a shift register of one character width, and greater than one character height to store the binary representation of the character image; unique black/white threshold detection and character recognition logical circuitry; and timing means to overcome inaccuracies arising from the loosely constrained movement of a hand-held scanning device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.