| 摘要 |
Embodiments of the invention generally provide, when performing capacitive sensing, driving a modulated signal on transmitter electrodes located only within a black image of the display device. When updating a display screen based on a newly received display frame, an input device may first insert the black image on the display screen. Once the black image is displayed, the input device may use the electrodes within the area of the screen displaying the black image to track the input object using capacitive sensing (e.g., determine if the user is pressing a finger or stylus on the screen). In this manner, performing capacitive sensing affects only the pixels displaying the black image which is not perceived by the user. After performing capacitive sensing using the electrodes, the input device may replace the black image with display data from the new display frame. |
