Shared electrode pattern field effect sensor and joystick...

H - Electricity – 03 – K

Patent

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Details

H03K 17/96 (2006.01) H03K 17/955 (2006.01)

Patent

CA 2594527

The present invention is directed to a shared electrode pattern field effect touch sensor apparatus. The apparatus includes first and second spaced electrode patterns, each having an inner electrode and an outer electrode. The inner electrode includes a primary portion defining a primary sense area and at least one secondary portion. Secondary portions of at least two patterns are adjacently disposed, and define secondary sense areas. A pulse generation circuit and a detection circuit are electrically coupled to each pattern. The presence of an object proximate a primary sense area activates one detection circuit. The presence of an object proximate a secondary sense area activates two detection circuits. A controller in communication with the detection circuits senses activation of the detection circuits. In a preferred embodiment, the apparatus is a navigational control device. A method of processing touch sensor field effect signals is also disclosed.

L'invention concerne un appareil tactile à effet de champ à motif d'électrode partagé qui comporte des premier et second modèles d'électrode espacés, chacun comportant une électrode interne et une électrode externe. L'électrode interne comporte une partie principale délimitant une zone tactile principale et au moins une partie secondaire. Les parties secondaires d'au moins motifs sont disposées adjacentes et délimitent des zones tactiles secondaires. Un circuit d'impulsion et un circuit de détection sont couplés électriquement à chaque motif. La présence d'un objet à proximité d'une zone tactile principale actionne un circuit de détection. La présence d'un objet à proximité d'une zone tactile secondaire actionne deux circuits de détection. Un contrôleur en communication avec des circuits de détection capte l'actionnement des circuits de détection. Dans un mode de réalisation préféré, l'appareil est un dispositif de commande de navigation. Procédé de traitement de signaux à effet de champ tactiles.

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