Title:
EXTENDED SENSING MULTI-TOUCH SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/127589
Kind Code:
A1
Abstract:
A capacitive touch sensing device (200), with: (i) a logical array (202) of capacitive buttons (B1 through B30) have a number R of rows and a number C of columns; (ii) a first node (TXBN1) coupled to a first column in the number C of columns, the first node for receiving a first transmit voltage; (iii) a second node (TXBN2) 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 (RR1 through RR4) for applying a respective different voltage to each of the intermediate nodes in response to the first transmit voltage and the second transmit voltage.
More Like This:
Inventors:
XU KANGCHENG (CN)
ZHANG JUN (CN)
ZHANG JUN (CN)
Application Number:
PCT/CN2017/120418
Publication Date:
July 04, 2019
Filing Date:
December 31, 2017
Export Citation:
Assignee:
TEXAS INSTRUMENTS INC (US)
TEXAS INSTRUMENTS JAPAN LTD (JP)
XU KANGCHENG (CN)
TEXAS INSTRUMENTS JAPAN LTD (JP)
XU KANGCHENG (CN)
International Classes:
G06F3/044
Foreign References:
| US20120268142A1 | 2012-10-25 | |||
| CN103186302A | 2013-07-03 | |||
| US20150162932A1 | 2015-06-11 | |||
| CN101907941A | 2010-12-08 | |||
| EP3049902A1 | 2016-08-03 | |||
| US20160162073A1 | 2016-06-09 |
Other References:
See also references of EP 3732556A4
Attorney, Agent or Firm:
JEEKAI & PARTNERS (CN)
Download PDF: