Touch-display control device and personal data assistant
US10242640B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2014 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Aug 2, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2354/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided are a touch display control device and an information terminal device, which are arranged so that the noise resulting from the actions for activation and display on a display panel, and the noise caused by the actions of activation and detection on a touch sensor never affects each other, and are useful for suppressing the elicitation of the difference in brightness attributed to non-display in a display frame.The information terminal device includes: a display controller operable to change start timings of display and non-display periods in a cycle of a frame synchronizing signal of a display frame, in each cycle of the frame synchronizing signal or each sequence of cycles thereof; and a touch panel controller operable to perform the activation of a touch panel and a touch detection during the non-display period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.