Keyboard scanning circuit, keyboard and scanning method thereof
US10148286B2 · kind B2 · utility
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3References
12Claims
0Family size
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Key dates
| Filing date | Jan 29, 2016 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Feb 11, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/023
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A keyboard scanning circuit includes a plurality of switching elements, M scanning lines and N sensing lines. Each of the sensing lines has a common node extended to M transmission lines. A switching element is coupled where one of the transmission lines and one of the scanning lines intersects. Two scanning lines correspondingly coupled through two switching elements to two transmission lines extended from one sensing line are different from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.