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DISPLAY TEST/ONLINE
CONTRÔLEUR MULTI-TOUCH W3C POINTEREVENTS

Compteur et Traqueur Multi-Touch

Posez plusieurs doigts sur votre écran pour tester la capacité de décodage du numériseur, mesurer la latence de suivi et vérifier la détection de 2 à 10 points simultanés.

工程指标明细

实时追踪多指触控接触 ID、精确坐标、接触面半径与压力参数。

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X: 0, Y: 0
API POINTER EVENTS & MULTIPLEXAGE DU NUMÉRISEUR

Balayage Multi-Touch, Multiplexage IC et Résolution Spatiale

Les contrôleurs tactiles utilisent des convertisseurs analogique-numérique rapides pour analyser la matrice ITO jusqu'à 240Hz. Par détection de capacité mutuelle, la puce traite les transferts de charge pour résoudre plusieurs coordonnées indépendantes sans confusion.

Multi-Touch 5 PointsStandard Mobile Basique

Numériseur standard capable de suivre 5 points de contact simultanés.

Multi-Touch 10 PointsStandard Pro et Tablettes

Contrôleur haut débit gérant les 10 doigts pour les gestes complexes et la MAO.

Coprocesseur Stylet ActifPression & Détection d'Inclinaison

Intègre les protocoles EMR ou USI pour une précision millimétrique de la pointe.

OPTOMETRIC ERGONOMICS & NON-MEDICAL NOTICE

Display Test Online is an engineering calibration utility for electronic visual displays (LCD, OLED, QD-OLED, MicroLED) and mobile touch digitizers. This software is NOT a medical eye exam, optometric vision test, or diagnostic health utility.

To reduce Digital Eye Strain (DES) during display calibration, apply optometric ergonomics:

  • The 20-20-20 Rule: Every 20 minutes, look at an object at least 20 feet away for 20 seconds.
  • Ambient Illumination: Ensure room ambient lighting matches display brightness levels (~100–150 nits for standard SDR workloads).
  • Optimal Viewing Distance: Place your screen approximately 20 to 30 inches (50–75 cm) from your eyes.
Technical FAQs & Helpful Content

常见问题解答 (FAQ)

关于此项诊断工具、校准步骤及显示器技术标准所需了解的一切。

01.What is a multi-touch screen test?
A multi-touch test evaluates how many concurrent physical touch contacts (finger taps or stylus presses) your touchscreen hardware and OS digitizer driver can accurately resolve simultaneously.
02.How many touch points should my smartphone or tablet support?
Modern flagship smartphones and tablets typically support 10-point multi-touch, allowing all 10 fingers to be tracked simultaneously. Budget or legacy devices may support 2 to 5 points.
03.How does W3C PointerEvents handle multi-touch in modern browsers?
The W3C PointerEvents API assigns a unique pointerId to every active contact point on the digitizer, streaming precise X/Y coordinates, pressure, width/height radii, and tilt angles.
04.Why does my screen drop touch points when I use more than 2 or 5 fingers?
Touch point drops occur when the digitizer IC reaches its hardware channel scanning capacity, or when touch driver firmware limits maximum simultaneous contacts to conserve power.
05.What is touch contact radius and contact area sensing?
Capacitive touch controllers measure the surface area of skin pressing against the glass (contact radius in mm²), which helps distinguish a light finger tap from a thumb or palm touch.
06.Can palm rejection interfere with multi-touch testing?
Yes, OS-level palm rejection algorithms (common on iPads and drawing tablets) automatically ignore large touch contact areas near screen edges, which may suppress additional touch points.
07.What causes ghost touches during multi-touch gestures?
Ghost touches occur when electrical noise (often from ungrounded chargers or wet screens) causes false mutual capacitance voltage spikes on adjacent ITO grid intersections.
08.Does multi-touch performance affect mobile gaming performance?
Yes! Fast-paced mobile games (RPGs, FPS shooters, rhythm games) require 3 to 6 simultaneous touch inputs for virtual d-pads, aiming, jumping, and shooting without touch input dropping.
09.Can I test Apple Pencil or S-Pen multi-touch along with fingers?
Yes, active styluses generate high-priority pointer events alongside finger touch contacts on supported digitizers.
10.How can I clear active touch contact points on screen?
Press the 'C' hotkey or tap the 'Clear Points' button on screen to reset the touch history and coordinate logs.
不确定接下来该运行哪项测试？需要故障排除建议？
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Matrice de Zones MortesCompteur Multi-TouchPrécision VectorielleVitesse de BalayageTest de Latence
PASS

MULTI-TOUCH 10 POINTS

Capacité Matérielle du Numériseur

10/10
Contacts Actifs0 Points
Pic Enregistré10 Points

Mesures de Contact

Télémétrie du Numériseur

Contacts en Direct
Points de Contact Actifs
0points
Target: 10 points
Points Max Enregistrés
10pts
Rayon Moyen de Contact
8.5mm

Coordonnées Tactiles

Flux W3C PointerEvent

Multi-Touch W3C
Awaiting event triggers...

Shortcuts

Keyboard Navigation

Hotkeys
F
Basculer Plein Écran
C
Effacer Journal Tactile
TV users can navigate with D-Pad & Remote arrow keys

Spécifications Multi-Touch

Standard W3C PointerEvents

W3C Spec
Standard Citations
W3C Pointer Events Level 3pointerId Tracking

Protocole multi-touch normalisé fournissant identifiants uniques, coordonnées et géométrie.

Monitor OSD Calibration
  • Posez vos 10 doigts sur la dalle pour tester le nombre maximal de canaux matériels.
  • Évitez les bords d'écran si le rejet de paume du système est activé.
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