Position coordinate input device
US4558757A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1984 |
| Grant date | Dec 17, 1985 |
| Priority date | — |
| Expiry date | May 31, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2239/052
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A position coordinate input device including an input plate subjected, at a point, to an external force with a finger, etc. so as to input data of coordinates of the point into a computer and the like. The device further includes four elastic support members for supporting the input plate, a pair of two first detectors yielding outputs of temperature characteristics of a first sign and a pair of two second detectors yielding outputs of temperature characteristics of a second sign opposite to the first sign so as to enable accurate detection of the coordinates of the point of application of the external force in a simplified construction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.