Pen for use with a touch screen
US11029769B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2019 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | Oct 8, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0446
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A pen for use with a touch screen includes a first AC coupling circuit, a second AC coupling circuit, a sense-regulation circuit, and a response circuit. The first AC coupling circuit receives a sense signal from the touch screen. The sense-regulation circuit compares the sense signal to a reference signal to produce a comparison signal. In addition, the sense-regulation circuit generates a regulation signal based on the comparison signal, which regulates receiving of the sense signal. The response circuit generates a transmit signal based on the comparison signal and data. The second AC coupling circuit transmits the transmit signal to the touch screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.