SNR enhancement for differential input device
US8432374B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2010 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Mar 2, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04164
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a position detector and a touch sensing device of using same with SNR enhancement. In one embodiment, the position detector has (P+1) inputs, each input for receiving an input signal associated with a position, P being a positive integer, and P operational amplifiers, each operational amplifier having a non-inverting input and an inverting input, where the inverting input of the j-th operational amplifier is electrically connected to the non-inverting input of the (j+1)-th operational amplifier, and the non-inverting input and the inverting input of the j-th operational amplifier are electrically connected to the j-th input port and the (j+1)-th input port, respectively, j=1, 2, 3, . . . , (P−1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.