Coordinate input apparatus
US5097102A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1990 |
| Grant date | Mar 17, 1992 |
| Priority date | — |
| Expiry date | Dec 21, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0433
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A coordinate input apparatus for detecting a vibration transmitted from a vibration input pen by a plurality of vibration sensors arranged on a vibration transmission member, and for determining coordinates of the vibration input pen from vibration propagation times required between the position of the vibration input pen to the positions of the vibration sensors, includes a vibration-isolating member formed in a peripheral portion of the vibration transmission member. The vibration-isolating member has a multi-layered structure consisting of a plurality of vibration-isolating layers formed so that a layer nearer to the vibration transmission plate has a lower acoustic impedance than that of a layer farther from the vibration transmission plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.