Signature input apparatus and a signature verification system
US6118889A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1998 |
| Grant date | Sep 12, 2000 |
| Priority date | — |
| Expiry date | Mar 23, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C9/35
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The object is to improve the accuracy of signature input and signature verification and improve security by causing the handwriting of a signature to disappear by itself. The signature verification system includes a signature input apparatus 1 and a signature verifying apparatus 6. Signature input apparatus 1 has an externally charged type liquid crystal sheet 2 which has an underside being adhesive and is placed on a coordinate input unit 3. When a dedicated pen 5 having the function of applying static charge onto this liquid crystal sheet 2 is used to write a signature, the handwriting of the signature is liquid crystal representation on the display area of liquid crystal sheet 2 and this handwriting of the signature will disappear by itself after a predetermined period of time. Further, signature verifying apparatus 6 reads the handwriting coordinate information of a signature output from coordinate input unit 3 for detecting the handwriting coordinate information of a signature and verifies this handwriting coordinate information with the handwriting coordinate information of signatures which have been registered beforehand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.