Intercharacter gap detector for MICRS
US4381494A · kind A · utility
31Cited by
6References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 6, 1980 |
| Grant date | Apr 26, 1983 |
| Priority date | — |
| Expiry date | Oct 6, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/2253
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
System for determining whether magnetic ink is present on specific areas of a document bearing magnetic ink characters. Signals are produced as a magnetic read head passes over the area in question on the face of the document. These signals are routed to apparatus which operates in response to the signals by providing outputs of a first kind when magnetic ink is present and outputs of another kind when ink is not present or is not present in sufficient amount to produce a signal exceeding a threshold value. Logic means responsive to the signals of the first and second kinds establish the presence or absence of magnetic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.