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1. WO2010030710 - CORRECTION D'EFFET DE CAPACITANCE PARASITE DANS DES PANNEAUX DE CAPTEURS TACTILES

Numéro de publication WO/2010/030710
Date de publication 18.03.2010
N° de la demande internationale PCT/US2009/056414
Date du dépôt international 09.09.2009
CIB
G06F 3/041 2006.01
GPHYSIQUE
06CALCUL; COMPTAGE
FTRAITEMENT ÉLECTRIQUE DE DONNÉES NUMÉRIQUES
3Dispositions d'entrée pour le transfert de données à traiter pour leur donner une forme utilisable par le calculateur; Dispositions de sortie pour le transfert de données de l'unité de traitement à l'unité de sortie, p.ex. dispositions d'interface
01Dispositions d'entrée ou dispositions d'entrée et de sortie combinées pour l'interaction entre l'utilisateur et le calculateur
03Dispositions pour convertir sous forme codée la position ou le déplacement d'un élément
041Numériseurs, p.ex. pour des écrans ou des pavés tactiles, caractérisés par les moyens de transduction
CPC
G06F 2203/04104
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
2203Indexing scheme relating to G06F3/00 - G06F3/048
041Indexing scheme relating to G06F3/041 - G06F3/045
04104Multi-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
G06F 3/0354
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
033Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
0354with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
G06F 3/0418
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
0416Control or interface arrangements specially adapted for digitisers
0418for error correction or compensation, e.g. based on parallax, calibration or alignment
G06F 3/04186
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
0416Control or interface arrangements specially adapted for digitisers
0418for error correction or compensation, e.g. based on parallax, calibration or alignment
04186Touch location disambiguation
G06F 3/044
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
044by capacitive means
G06F 3/0445
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
044by capacitive means
0445using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
Déposants
  • APPLE INC. [US]/[US] (AllExceptUS)
  • YOUSEFPOR, Marduke [US]/[US] (UsOnly)
Inventeurs
  • YOUSEFPOR, Marduke
Mandataires
  • KUBOTA, Glenn, M.
Données relatives à la priorité
12/208,32410.09.2008US
Langue de publication anglais (EN)
Langue de dépôt anglais (EN)
États désignés
Titre
(EN) CORRECTION OF PARASITIC CAPACITANCE EFFECT IN TOUCH SENSOR PANELS
(FR) CORRECTION D'EFFET DE CAPACITANCE PARASITE DANS DES PANNEAUX DE CAPTEURS TACTILES
Abrégé
(EN)
Compensation of pixels included in a touch sensor panel that generate erroneous readings (so called "negative pixels") due to a poor grounding condition of the object touching the touch sensor panel is disclosed herein. To compensate for the erroneous readings, sense lines of the touch sensor panel can include reverse driving circuits to facilitate calculation of an object-to-ground capacitance. If the calculated object-to-ground capacitance indicates the presence of a poor grounding condition, then the object-to-ground capacitance and detected pixel touch output values are used to estimate new pixel touch output values that are used instead of the detected pixel touch output values to determine touch event(s).
(FR)
L’invention concerne la compensation de pixels inclus dans un panneau de capteurs tactiles qui génèrent des lectures erronées (dits « pixels négatifs ») du fait d'une médiocre condition de mise à la masse de l'objet touchant le panneau de capteurs tactiles. Pour compenser les lectures erronées, les lignes de détection du panneau de capteurs tactiles peuvent comprendre des circuits de commande inverse pour faciliter le calcul d’une capacitance objet-masse. Si la capacitance objet-masse calculée indique la présence d'une médiocre condition de mise à la masse, alors la capacitance objet-masse et les valeurs de sortie tactile de pixel détectées sont utilisées pour estimer de nouvelles valeurs de sortie tactile de pixel qui sont utilisées au lieu des valeurs de sortie tactile de pixel détectées pour déterminer un ou des événements de contact.
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