GB201209731D0 - Improvements in touch sensitive displays - Google Patents

Improvements in touch sensitive displays

Info

Publication number
GB201209731D0
GB201209731D0 GBGB1209731.7A GB201209731A GB201209731D0 GB 201209731 D0 GB201209731 D0 GB 201209731D0 GB 201209731 A GB201209731 A GB 201209731A GB 201209731 D0 GB201209731 D0 GB 201209731D0
Authority
GB
United Kingdom
Prior art keywords
intersection point
subsets
touch
rows
columns
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GBGB1209731.7A
Other versions
GB2502596B (en
GB2502596A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zytronic Displays Ltd
Original Assignee
Zytronic Displays Ltd
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 Zytronic Displays Ltd filed Critical Zytronic Displays Ltd
Priority to GB201209731A priority Critical patent/GB2502596B/en
Publication of GB201209731D0 publication Critical patent/GB201209731D0/en
Publication of GB2502596A publication Critical patent/GB2502596A/en
Application granted granted Critical
Publication of GB2502596B publication Critical patent/GB2502596B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04104—Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger

Abstract

A method of operating a touch sensitive display that has an input array of electrodes capacitively coupled to an output array of electrodes. The method involves performing a scan operation at every intersection point of the input array and output array so as to obtain a touch value for every intersection point. The touch value is indicative as to whether there is a touch event at the intersection point. The intersection points are arranged into subsets (e.g. rows and columns). The touch value is compared to a predetermined threshold and only those subsets which include at least one intersection point that has a touch value exceeding the first threshold are processed. A comparison of the processing effort required to perform the processing step for respective subsets (e.g. rows columns may be made before selecting the subsets to process. A number of rows or columns can be eliminated from being processed thus reducing the overall processing burden.
GB201209731A 2012-05-31 2012-05-31 Improvements in touch sensitive displays Active GB2502596B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB201209731A GB2502596B (en) 2012-05-31 2012-05-31 Improvements in touch sensitive displays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB201209731A GB2502596B (en) 2012-05-31 2012-05-31 Improvements in touch sensitive displays

Publications (3)

Publication Number Publication Date
GB201209731D0 true GB201209731D0 (en) 2012-07-18
GB2502596A GB2502596A (en) 2013-12-04
GB2502596B GB2502596B (en) 2015-05-13

Family

ID=46582161

Family Applications (1)

Application Number Title Priority Date Filing Date
GB201209731A Active GB2502596B (en) 2012-05-31 2012-05-31 Improvements in touch sensitive displays

Country Status (1)

Country Link
GB (1) GB2502596B (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120105370A1 (en) * 2005-12-12 2012-05-03 Nupix, LLC Electroded Sheet for a Multitude of Products
EP2291729B1 (en) * 2008-04-30 2013-06-05 N-Trig Ltd. Multi-touch detection
FR2934908B1 (en) * 2008-08-05 2013-09-27 Stantum METHOD FOR ACQUIRING AND ANALYZING A MULTICONTACT TOUCH SENSOR FOLLOWING A DICHOTOMIC PRINCIPLE, ELECTRONIC CIRCUIT AND MULTICONTACT TOUCH SENSOR IMPLEMENTING SUCH A METHOD
TWI472993B (en) * 2009-02-11 2015-02-11 Elan Microelectronics Corp Touch circuit and scanning method of capacitive touch sensor
TWI393043B (en) * 2009-08-27 2013-04-11 Elan Microelectronics Corp Detection Circuit and Method of Capacitive Touchpad
US20120013565A1 (en) * 2010-07-16 2012-01-19 Perceptive Pixel Inc. Techniques for Locally Improving Signal to Noise in a Capacitive Touch Sensor

Also Published As

Publication number Publication date
GB2502596B (en) 2015-05-13
GB2502596A (en) 2013-12-04

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