Invention Grant
- Patent Title: Extended sensing multi-touch system
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Application No.: US15972410Application Date: 2018-05-07
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Publication No.: US11416096B2Publication Date: 2022-08-16
- Inventor: Kangcheng Xu , Jun Zhang
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Brian D. Graham; Charles A. Brill; Frank D. Cimino
- Main IPC: G06F3/044
- IPC: G06F3/044 ; G06F3/041

Abstract:
A capacitive touch sensing device, with: (i) a logical array of capacitive buttons have a number R of rows and a number C of columns; (ii) a first node coupled to a first column in the number C of columns, the first node for receiving a first transmit voltage; (iii) a second node coupled to a second column in the number C of columns, the second node for receiving a second transmit voltage; (iv) a number of intermediate nodes between the first node and the second node, wherein each intermediate node is coupled to a respective column in the number C of columns; and (v) circuitry for applying a respective different voltage to each of the intermediate nodes in response to the first transmit voltage and the second transmit voltage.
Public/Granted literature
- US20190204980A1 EXTENDED SENSING MULTI-TOUCH SYSTEM Public/Granted day:2019-07-04
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