Card processing apparatus and method
US6241152A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 8, 1998 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Sep 8, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K1/125
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A card processing apparatus process the card having the magnetic layer containing two types magnetic material. The one of the magnetic materials increases coercive force once receiving a magnetic field as compared to coercive force prior to application of the magnetic field and changes to a substantially irreversible state. This apparatus records first data by applying a magnetic field so as to record the data on the magnetic layer of the card at a first azimuth angle in order to change the states of the two types magnetic materials of the magnetic layer. This apparatus also records second data by applying a magnetic field so as to record the data at a second azimuth angle different from the first azimuth angle in order to change the state of the first magnetic material of the area of the card which is recorded as the first data. Further, this apparatus reads the first data recorded with the first azimuth angle and the second data recorded with the second azimuth angle, then determines that whether or not the first and second data is validly recorded on the card, and issues the card.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.