Patent ID: 11966536
Assignee: BEIJING ESWIN COMPUTING TECHNOLOGY CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A touch driving apparatus used for a touch sensor, wherein, the touch sensor comprises a plurality of driving electrodes and a plurality of sensing electrodes intersecting with each other, and the touch driving apparatus comprises:
a controller, configured to:
determine a first driving electrode group and a second driving electrode group in a current driving time period according to a Code Division Multiple Access (CDM) code matrix, wherein, the first driving electrode group includes one or more driving electrodes that are expected to be discharged in the current driving time period among the plurality of driving electrodes, and the second driving electrode group includes one or more driving electrodes that are expected to be charged in the current driving time period among the plurality of driving electrodes; and
control utilizing power from the first driving electrode group to charge the second driving electrode group, in response to the determination,

wherein, the controller controls utilizing the power from the first driving electrode group to charge the second driving electrode group up to a first time period; and
after the first time period, the controller controls utilizing a low level to release remaining power from the first driving electrode group, and controls utilizing a high level to charge the second driving electrode group,
wherein, the touch driving apparatus further comprises at least one comparing unit; and
each comparing unit compares a first voltage value on a first driving electrode from the first driving electrode group with a corresponding second voltage value on a second driving electrode from the second driving electrode group, and outputs a comparison result indicating whether a voltage difference between the first voltage value and the second voltage value meets a threshold condition,
wherein, when a number of comparison results indicating the threshold condition being met is greater than or equal to a first preset number, the controller determines that the first time period ends.