Inventor
TANG CHI-HAO
TW49 patents
⚠️ This page may combine multiple inventors who share the name “TANG CHI-HAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CHANG CHIN-FU
28 patentsUS8570289B2Oct 29, 2013
Method and device for position detection
CHANG CHIN-FU11 citations93
US8564564B2Oct 22, 2013
Method and device for position detection
CHANG CHIN-FU11 citations93
US8400423B2Mar 19, 2013
Method and device for analyzing positions
CHANG CHIN-FU16 citations93
US9081441B2Jul 14, 2015
Method and device for analyzing two-dimension sensing information
CHANG CHIN-FU4 citations84
US8896548B2Nov 25, 2014
Capacitive touch screen with method and device for converting sensing information including zero cross point
CHANG CHIN-FU7 citations84
US8890821B2Nov 18, 2014
Method and device for dual-differential sensing
CHANG CHIN-FU9 citations84
US8600698B2Dec 3, 2013
Method and device for analyzing positions
CHANG CHIN-FU6 citations84
US8537131B2Sep 17, 2013
Method and device for converting sensing information
CHANG CHIN-FU7 citations84
US8400422B2Mar 19, 2013
Method and device for analyzing positions
CHANG CHIN-FU7 citations84
US8842079B2Sep 23, 2014
Method and device for determining a touch or touches
CHANG CHIN-FU2 citations74
US8564557B2Oct 22, 2013
Device and method for parallel-scanning differential touch detection
CHANG CHIN-FU3 citations74
US8952928B2Feb 10, 2015
Device and method for detecting touch screen
CHANG CHIN-FU1 citations63
US8941597B2Jan 27, 2015
Method and device for analyzing two-dimension sensing information
CHANG CHIN-FU2 citations63
US8816987B2Aug 26, 2014
Method and device for signal detection
CHANG CHIN-FU0 citations63
US8816979B2Aug 26, 2014
Method and device for determining a touch or touches
CHANG CHIN-FU0 citations63
US8643613B2Feb 4, 2014
Method and device for dual-differential sensing
CHANG CHIN-FU3 citations63
US8583401B2Nov 12, 2013
Method and device for analyzing positions
CHANG CHIN-FU1 citations63
US8471826B2Jun 25, 2013
Method and device for position detection
CHANG CHIN-FU2 citations63
US8473243B2Jun 25, 2013
Method and device for analyzing positions
CHANG CHIN-FU2 citations63
US8400425B2Mar 19, 2013
Method and device for analyzing positions
CHANG CHIN-FU2 citations63
US8884914B2Nov 11, 2014
Method and device for signal detection
CHANG CHIN-FU1 citations62
US9689906B2Jun 27, 2017
Method and device for position detection
CHANG CHIN-FU0 citations52
US9069410B2Jun 30, 2015
Method and device for analyzing two-dimension sensing information
CHANG CHIN-FU0 citations52
US8884631B2Nov 11, 2014
Method and device for automatically calibrating touch detection
CHANG CHIN-FU0 citations52
US8872776B2Oct 28, 2014
Method and device for analyzing two-dimension sensing information
CHANG CHIN-FU0 citations52
US8633917B2Jan 21, 2014
Method and device for capacitive position detection
CHANG CHIN-FU1 citations52
US8587555B2Nov 19, 2013
Method and device for capacitive position detection
CHANG CHIN-FU1 citations52
US8400424B2Mar 19, 2013
Method and device for analyzing positions
CHANG CHIN-FU0 citations52
EGALAX_EMPIA TECH INC
13 patentsUS9798427B2Oct 24, 2017
Method and device for dual-differential sensing
EGALAX_EMPIA TECH INC2 citations84
US9483152B2Nov 1, 2016
Method and device for dual-differential sensing
EGALAX_EMPIA TECH INC3 citations84
US10310693B2Jun 4, 2019
Controller for position detection
EGALAX_EMPIA TECH INC0 citations63
US9977556B2May 22, 2018
Controller for position detection
EGALAX_EMPIA TECH INC1 citations63
US9606692B2Mar 28, 2017
Controller for position detection
EGALAX_EMPIA TECH INC0 citations63
US11199927B2Dec 14, 2021
Method and apparatus for determining mistaken approaching or touching event
EGALAX_EMPIA TECH INC0 citations60
US11513636B2Nov 29, 2022
Method and apparatus for excluding line piece group corresponding to palm
EGALAX_EMPIA TECH INC0 citations59
US11449177B2Sep 20, 2022
Method and apparatus for determining whether palm line group needs to be divided
EGALAX_EMPIA TECH INC0 citations59
US10101372B2Oct 16, 2018
Method and device for analyzing positions
EGALAX_EMPIA TECH INC0 citations52
US10061459B2Aug 28, 2018
Method and device for position detection
EGALAX_EMPIA TECH INC0 citations52
US9864471B2Jan 9, 2018
Method and processor for analyzing two-dimension information
EGALAX_EMPIA TECH INC0 citations52
US10866676B2Dec 15, 2020
Touch sensitive electronic device, touch sensitive processing apparatus and method thereof
EGALAX_EMPIA TECH INC0 citations42
US9715310B2Jul 25, 2017
Touch controller, touch system, and method for detecting a touch screen
EGALAX_EMPIA TECH INC0 citations42
Egalax—Empia Technology Inc
7 patentsUS8970552B2Mar 3, 2015
Method and device for position detection
Egalax—Empia Technology Inc8 citations84
US9268448B2Feb 23, 2016
Device and method for parallel-scanning differential touch detection
Egalax—Empia Technology Inc2 citations74
US9304633B2Apr 5, 2016
Device and method for detecting touch screen
Egalax—Empia Technology Inc1 citations63
US9285940B2Mar 15, 2016
Method and device for position detection
Egalax—Empia Technology Inc0 citations63
US9141216B2Sep 22, 2015
Method and device for dual-differential sensing
Egalax—Empia Technology Inc2 citations63
US8970551B2Mar 3, 2015
Method and device for position detection
Egalax—Empia Technology Inc1 citations63
US9069429B2Jun 30, 2015
Method and device for image segmentation
Egalax—Empia Technology Inc0 citations52