| 发明名称 | Waterproof baseline tracking in capacitive touch controllers | ||
| 摘要 | A method for a touch panel control circuit includes stimulating a touch panel and receiving signals responsive to the stimulating. Based on the received signals, water or another contaminant may be determined to be present on the touch panel. While the contaminant is present on the touch panel, a wet baseline mode of operation in which a different baseline value is used to detect a touch condition for the touch panel. When the contaminant is removed, operation returns to a dry baseline mode. | ||
| 申请公布号 | US8823678(B2) | 申请公布日期 | 2014.09.02 |
| 申请号 | US201213410844 | 申请日期 | 2012.03.02 |
| 申请人 | Broadcom Corporation | 发明人 | Li Tianhao;Sobel David Amory;Joshi Satish Vithal |
| 分类号 | G09G5/00 | 主分类号 | G09G5/00 |
| 代理机构 | Brinks Gilson & Lione | 代理人 | Brinks Gilson & Lione |
| 主权项 | 1. A method for a touch panel control circuit, the method comprising: stimulating a touch panel; receiving signals from the touch panel responsive to the stimulating; based on the received signals, determining a contaminant to be present on the touch panel, including comparing a minimum capacitance value for the touch panel with a threshold value, andif the minimum capacitance value exceeds the threshold value,determining the contaminant is present; and switching to a wet baseline mode of operation while the contaminant is present on the touch panel. | ||
| 地址 | Irvine CA US | ||