Method of reading electrical information and information carrying member for use in the method
US5453602A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 1992 |
| Grant date | Sep 26, 1995 |
| Priority date | — |
| Expiry date | Aug 31, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/081
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of reading electrical information, which comprises arranging electric field-generating means having a pulse oscillator and detection means of detecting a potential in the electric field to form an electrostatic coupling space and/or a latent electrostatic coupling space where the and the detection means can sense a change in the electric field as a change of potential passing an information carrying member formed by covering an electrically conductive member having a form expressing information with an electrically nonconductive material through the electrostatic coupling space or the latent electrostatic coupling space, thereby to detect the information expressed by the form of the electrically conductive member, and information carrying member for use in the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.