WO2001033498A3 - Touch screen controller - Google Patents

Touch screen controller Download PDF

Info

Publication number
WO2001033498A3
WO2001033498A3 PCT/US2000/029573 US0029573W WO0133498A3 WO 2001033498 A3 WO2001033498 A3 WO 2001033498A3 US 0029573 W US0029573 W US 0029573W WO 0133498 A3 WO0133498 A3 WO 0133498A3
Authority
WO
WIPO (PCT)
Prior art keywords
touch screen
screen controller
touch
comparator
analog
Prior art date
Application number
PCT/US2000/029573
Other languages
French (fr)
Other versions
WO2001033498A2 (en
Inventor
Bernd M Rundel
Original Assignee
Texas Instr Tucson Corp
Bernd M Rundel
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Texas Instr Tucson Corp, Bernd M Rundel filed Critical Texas Instr Tucson Corp
Priority to AU13470/01A priority Critical patent/AU1347001A/en
Publication of WO2001033498A2 publication Critical patent/WO2001033498A2/en
Publication of WO2001033498A3 publication Critical patent/WO2001033498A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
    • G06F1/3215—Monitoring of peripheral devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/325—Power saving in peripheral device
    • G06F1/3262—Power saving in digitizer or tablet

Abstract

An improved touch screen controller including a comparator and an analog-to-digital converter. The comparator of the touch screen controller detects a touch of the touch screen while the analog-to-digital converter is powered down. The Data Out (DOUT) line of the touch screen controller is used to signal the microprocessor that a touch has occurred. The unique structure of the improved touch screen controller and the fast switching edges of the comparator output signal provide for a faster touch screen controller that consumes little power without requiring a dedicated pin for the touch signal.
PCT/US2000/029573 1999-10-29 2000-10-27 Touch screen controller WO2001033498A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU13470/01A AU1347001A (en) 1999-10-29 2000-10-27 Touch screen controller

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16225299P 1999-10-29 1999-10-29
US60/162,252 1999-10-29

Publications (2)

Publication Number Publication Date
WO2001033498A2 WO2001033498A2 (en) 2001-05-10
WO2001033498A3 true WO2001033498A3 (en) 2002-01-24

Family

ID=22584833

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/029573 WO2001033498A2 (en) 1999-10-29 2000-10-27 Touch screen controller

Country Status (2)

Country Link
AU (1) AU1347001A (en)
WO (1) WO2001033498A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9927933B2 (en) * 2014-07-10 2018-03-27 Microchip Technology Germany Gmbh Method and system for gesture detection and touch detection

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996042068A1 (en) * 1995-06-12 1996-12-27 Samsung Electronics Co., Ltd. Digitizer controller
US5861583A (en) * 1992-06-08 1999-01-19 Synaptics, Incorporated Object position detector
US5956020A (en) * 1995-07-27 1999-09-21 Microtouch Systems, Inc. Touchscreen controller with pen and/or finger inputs
EP0982677A2 (en) * 1998-08-21 2000-03-01 Elo Touchsystems, Inc. Low current four-wire interface for five-wire resistive touch-screen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5861583A (en) * 1992-06-08 1999-01-19 Synaptics, Incorporated Object position detector
WO1996042068A1 (en) * 1995-06-12 1996-12-27 Samsung Electronics Co., Ltd. Digitizer controller
US5956020A (en) * 1995-07-27 1999-09-21 Microtouch Systems, Inc. Touchscreen controller with pen and/or finger inputs
EP0982677A2 (en) * 1998-08-21 2000-03-01 Elo Touchsystems, Inc. Low current four-wire interface for five-wire resistive touch-screen

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Burr-Brown Corp. : ADS7845 Touch Screen Controller data sheet", INTERNET ARTICLE, December 1998 (1998-12-01), Tucson, AZ, USA, pages 1 - 12, XP002170824, Retrieved from the Internet <URL:http://www.ti.com> [retrieved on 20010627] *
S-D. KAO ET AL.: "Development and implementation of a simple digitizer for morphometry", MEASUREMENT SCIENCE AND TECHNOLOGY, vol. 7, no. 8, 1 August 1996 (1996-08-01), Bristol, UK, pages 1182 - 1186, XP000631809 *

Also Published As

Publication number Publication date
AU1347001A (en) 2001-05-14
WO2001033498A2 (en) 2001-05-10

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