Input device having key tops
US8669942B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2011 |
| Grant date | Mar 11, 2014 |
| Priority date | — |
| Expiry date | Feb 22, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2225/022
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An operation unit has an operation surface for accepting an input operation. In a plan view, the operation surface has a rectangular contour including a plurality of sides and a plurality of corner portions. When each point at which extensions of adjacent two of the plural sides cross each other is defined as a virtual intersection, and when an intersection at which respective diagonals linking the virtual intersections cross each other is defined as a virtual center, the contour of the corner portion crosses the diagonal that passes through the virtual intersection and the virtual center, at a point between the virtual intersection in the vicinity of the corner portion and the virtual center. The corner portions is a specific corner portion having an intersection with the diagonal at a position closer to the virtual center than the adjacent two corner portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.