Transducing device for signature verification system
US4143357A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1978 |
| Grant date | Mar 6, 1979 |
| Priority date | — |
| Expiry date | Mar 24, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A transducing device converts to representative electrical signals those force variations which are produced by the act of a person writing a signature. In the device, a signature writing surface is provided, and is part of an arm attached by resilient means to a support member which in turn is secured to a base. A magnetic core is connected to the underside of the signature writing surface and coacts with a plurality of coils mounted on the base to provide a motion transducer which, with associated circuitry, generates an electrical signal which varies in accordance with the varying forces applied to the signature writing surface as a signature is written thereon. Stop rods secured to the base limit the extent of travel in one direction of the signature writing surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.