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1. WO2010027385 - TOUCH DISPLAY WITH SWITCHABLE INFRARED ILLUMINATION FOR TOUCH POSITION DETERMINATION AND METHODS THEREOF

Publication Number WO/2010/027385
Publication Date 11.03.2010
International Application No. PCT/US2009/001864
International Filing Date 25.03.2009
Chapter 2 Demand Filed 25.10.2010
IPC
G06F 1/32 2006.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
1Details not covered by groups G06F3/-G06F13/82
26Power supply means, e.g. regulation thereof
32Means for saving power
G06F 3/042 2006.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input 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
01Input arrangements or combined input and output arrangements for interaction between user and computer
03Arrangements for converting the position or the displacement of a member into a coded form
041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
042by opto-electronic means
H04M 1/725 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
MTELEPHONIC COMMUNICATION
1Substation equipment, e.g. for use by subscribers
72Substation extension arrangements; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selecting
725Cordless telephones
G02F 1/133 2006.1
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
CPC
G06F 1/3203
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
1Details not covered by groups G06F3/00G06F13/00 and G06F21/00
26Power supply means, e.g. regulation thereof
32Means for saving power
3203Power management, i.e. event-based initiation of power-saving mode
G06F 1/3231
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
1Details not covered by groups G06F3/00G06F13/00 and G06F21/00
26Power supply means, e.g. regulation thereof
32Means for saving power
3203Power management, i.e. event-based initiation of power-saving mode
3206Monitoring of events, devices or parameters that trigger a change in power modality
3231Monitoring the presence, absence or movement of users
G06F 3/0421
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input 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
01Input arrangements or combined input and output arrangements for interaction between user and computer
03Arrangements for converting the position or the displacement of a member into a coded form
041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
042by opto-electronic means
0421by interrupting or reflecting a light beam, e.g. optical touch-screen
Y02D 10/00
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
10Energy efficient computing, e.g. low power processors, power management or thermal management
Applicants
  • SONY ERICSSON MOBILE COMMUNICATIONS AB [SE]/[SE] (AllExceptUS)
  • NIE, Xiangyi [CN]/[US] (UsOnly)
Inventors
  • NIE, Xiangyi
Agents
  • MYERS BIGEL SIBLEY & SAJOVEC, P.A.
Priority Data
12/205,47705.09.2008US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) TOUCH DISPLAY WITH SWITCHABLE INFRARED ILLUMINATION FOR TOUCH POSITION DETERMINATION AND METHODS THEREOF
(FR) ÉCRAN TACTILE À ÉCLAIRAGE INFRAROUGE COMMUTABLE POUR LA DÉTERMINATION DE POSITION DE TOUCHE ET PROCÉDÉS CORRESPONDANTS
Abstract
(EN) An electronic touch display includes a display device, a plurality of light sensors, an infrared light source, a switch circuit, and a touch position circuit. The light sensors are spaced apart and coupled to the display device. The infrared light source is coupled to the display device and configured to emit infrared light through the display device to illuminate an adjacent user object that is touching the display device. The switch circuit is configured to turn on the infrared light source in response to at least one of the light sensors indicating detection of the user object touching the display device. The touch position circuit is configured to identify a user touch position on the display device in response to signal levels from a plurality of the light sensors sensing infrared light from the infrared light source which is reflected by the user object to the plurality of the light sensors.
(FR) La présente invention concerne un écran tactile électronique comportant un dispositif d'affichage, une pluralité de capteurs de lumière, une source de lumière infrarouge, un circuit de commutation, et un circuit de position de touche. Les capteurs de lumière sont espacés et couplés au dispositif d'affichage. La source de lumière infrarouge est couplée au dispositif d'affichage et configurée pour émettre une lumière infrarouge à travers le dispositif d'affichage pour éclairer un objet d'utilisateur adjacent qui est en contact avec le dispositif d'affichage. Le circuit de commutation est configuré pour allumer la source de lumière infrarouge en réponse à une indication par au moins des capteurs de la détection d'un contact entre l'objet d'utilisateur et le dispositif d'affichage. Le circuit de position de touche est configuré pour identifier une position de touche d'utilisateur sur le dispositif d'affichage en réponse aux niveaux de signal provenant d'une pluralité de capteur de lumière détectant la lumière infrarouge provenant de la source de lumière infrarouge qui est réfléchie par l'objet d'utilisateur vers la pluralité de capteurs de lumière.
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