Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
DIGITAL-TO-ANALOG CONTROLLER-REFERENCED TOUCH SENSING SYSTEM, AND RELATED SYSTEMS, METHODS, AND DEVICES
Document Type and Number:
WIPO Patent Application WO/2020/139452
Kind Code:
A3
Abstract:
Some disclosed embodiments relate, generally, to shaping a waveform of a reference signal used by a driver of a touch sensor to limit electromagnetic emissions (EME) emitted by a touch sensor during a sensing operation. Some disclosed embodiments relate, generally, to a DAC referenced touch sensor driver and controlling an amount of EME emitted at a touch sensor using shapes of reference signals used by a touch detector to detect touches at the touch sensor. Some disclosed embodiments relate, generally, to compensating for effects of foreign noise at a touch sensor. And more specifically, to changing a shape of a reference signal based on a change to a sampling rate made to compensate for foreign noise.

Inventors:
PORTMANN LIONEL NICOLAS (SE)
JONSSON FREDRIK (SE)
COLLINS RICHARD P (GB)
Application Number:
PCT/US2019/058233
Publication Date:
August 06, 2020
Filing Date:
October 26, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MICROCHIP TECH INC (US)
International Classes:
H03M1/08; G06F3/044; H03M1/66
Domestic Patent References:
WO2016049425A12016-03-31
Foreign References:
US20110012618A12011-01-20
Other References:
ANONYMOUS: "Direct digital synthesis - Wikipedia", 17 October 2018 (2018-10-17), XP055666223, Retrieved from the Internet [retrieved on 20200207]
ANONYMOUS: "Numerically-controlled oscillator - Wikipedia", 17 October 2018 (2018-10-17), XP055666226, Retrieved from the Internet [retrieved on 20200207]
Attorney, Agent or Firm:
BACA, Andrew J. et al. (US)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: CLASSIFYING COMPARATORS BASED ON COMPARATOR OFFSETS

Next Patent: A METHOD FOR INCREASING ROMIDEPSIN PRODUCTION FROM FERMENTATION BROTH