Invention Application
- Patent Title: CAPACITIVE TOUCH PANEL WITH INCREASED SCAN FREQUENCY
- Patent Title (中): 具有增加扫描频率的电容触摸屏
-
Application No.: US14580543Application Date: 2014-12-23
-
Publication No.: US20150370366A1Publication Date: 2015-12-24
- Inventor: David Johnson , Guozhong Shen , Firooz Massoudi
- Applicant: Qualcomm Technologies, Inc.
- Main IPC: G06F3/044
- IPC: G06F3/044

Abstract:
A system includes a first group of transmit electrodes configured to be driven from a first side of a capacitive touch panel and a second group of transmit electrodes configured to be driven from a second side of the panel. The system also includes receive electrodes and a controller operatively coupled with the transmit electrodes and the receive electrodes. The controller is operable to dynamically configure the transmit electrodes and the receive electrodes to compensate for phase delays introduced by driving the transmit electrodes from different sides of the panel. A method includes driving a first group of transmit electrodes from a first side of a capacitive touch panel, driving a second group of transmit electrodes from a second side of the panel, and dynamically configuring the transmit electrodes and receive electrodes to compensate for phase delays introduced by driving the transmit electrodes from different sides of the panel.
Public/Granted literature
- US09552117B2 Capacitive touch panel with increased scan frequency using dynamic phase compensation Public/Granted day:2017-01-24
Information query