Touch sensor excitation using transformer
US10585502B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2017 |
| Grant date | Mar 10, 2020 |
| Priority date | — |
| Expiry date | Oct 10, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Input device power consumption can be reduced with a magnetic drive system. In some examples, the input device can include a transformer configured to generate a desired high output voltage from logic-level input pulses. In some examples, the distributed capacitance and associated resonance of the transformer can act as a low-pass filter, and can create a relatively clean output waveform from input logic signal waveforms. In some examples, the transformer can be an autotransformer. In some examples, to stabilize an amplitude of the output by sampling the output of the transformer and adjusting the input to the transformer based on the sampled output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.