Character recognition apparatus
US4975974A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1990 |
| Grant date | Dec 4, 1990 |
| Priority date | — |
| Expiry date | Feb 8, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/242
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A character recognition apparatus, for use with an input character pattern and a dictionary of stored character patterns that are blocked into categories, all the patterns having a quantifiable format, in which a judging circuit performs a comparison of the patterns based on the quantifiable format and determines whether the quantified difference exceeds a threshold value in order to determine whether the input and stored character patterns match. The threshold is reduced, as lower mismatch quantities are found for a given character, and when a comparison exceeds the threshold, thereby indicating a mismatch, a new stored character is examined. As among all stored characters that have passed the threshold test, the one with the lowest mismatch quantity is selected as the recognized character.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.