Electromagnet induced switch
US5880539A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 10, 1997 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | Apr 10, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2017/9706
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an electromagnet induced switch comprises a substrate having an upper and lower conductive membranes, a plurality of electromagnet induced switches and a circuit controlling device. The electromagnet induced switches are suitably mounted onto the substrate and are suitably controlled by the circuit controlling device (including an analog multiplexer, a signal amplifying device, a signal triggering device, a signal locking-up/deleting device, a CPU and a breaking point controlling device during operation.) By this arrangement, the depressing position can be suitably recognized and the resulted signal is suitably and properly processed by the CPU. Consequently, a quick, missing free, free of incorrect works, linear and silent inputting device is resulted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.