Multi-functional, rotary dial input device for portable computers
US6225980A · kind A · utility
141Cited by
19References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1998 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | Feb 6, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H25/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multiple switch assembly acts as an input device for computers. The switch assembly is comprised of a first input device which defines a circumference. A second input device is positioned within the circumference of the first input device. An interface is connected to the first input device and the second input device for producing output signals responsive to the first and second input devices. A portable computer utilizing such an input device is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.