Title:
COMMON MODE NOISE PROCESSING METHOD AND COMMON MODE NOISE PROCESSING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/027452
Kind Code:
A1
Abstract:
Provided are a common mode noise processing method, common mode noise processing device and touch controller. The common mode noise processing device comprises: s number of subtraction processing units (210-1 to 210-s) and a spectrum analysis module (220), s being an integer greater than 0. Each of the subtraction processing units (210-1 to 210-s) comprises two first input ports (211-1 to 211-s, 212-1 to 212-s), one subtractor (213-1 to 213-s) and one first output port (214-1 to 214-s). The two first input ports (211-1 to 211-s, 212-1 to 212-s) are connected to the subtracter (213-1 to 213-s). The subtracter (213-1 to 213-s) is connected to the first output port (214-1 to 214-s). The spectrum analysis module (220) comprises s number of second input port (221-1 to 221-s) and at least one spectrum analysis unit (222), the s number of second input ports (221) being connected to the at least one spectrum analysis unit (222). The s number of first output ports (214-1 to 214-s) of the s number of subtraction processing units (210-1 to 210-s) are correspondingly connected with the s number of second input ports (221-1 to 221-s) of the spectrum analysis unit (222). The common mode noise processing method, the common mode noise processing device and the touch controller are capable of detecting common mode noise in a signal at the position of a touch point on the touch screen, so as to reduce the common mode noise thus reduce the influence on the signal thereby, and that the accuracy of the position of the touch point generated by the touch controller can be improved.
Inventors:
LI HUAFEI (CN)
WEN YANAN (CN)
WEN YANAN (CN)
Application Number:
PCT/CN2016/093899
Publication Date:
February 15, 2018
Filing Date:
August 08, 2016
Export Citation:
Assignee:
SHENZHEN GOODIX TECH CO LTD (CN)
International Classes:
G06F3/044
Foreign References:
| CN104679366A | 2015-06-03 | |||
| TW201617819A | 2016-05-16 | |||
| CN102902393A | 2013-01-30 | |||
| CN103853404A | 2014-06-11 | |||
| CN103441973A | 2013-12-11 |
Other References:
See also references of EP 3309666A4
Attorney, Agent or Firm:
LONGSUN LEAD IP LTD. (CN)
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