A secure keypad system

G - Physics – 06 – F

Patent

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Details

G06F 3/041 (2006.01) G06F 1/16 (2006.01) G06F 3/048 (2006.01) H05K 5/02 (2006.01) H05K 9/00 (2006.01)

Patent

CA 2719428

A secure keypad system has a touch sensitive screen (11) with a plurality of distinct fields (12) on a surface, where each field (12) has an associated input value. A plurality of force sensors (16, 17) are coupled to the screen (11) and arranged at individual force sensor locations to sense individual forces in response to the screen (11) being touched and to generate corresponding individual force signals. Identification means are provided for identifying a field (12) being touched based on the force signals, and generating means are provided for generating the input value associated with the field (12) being touched. An electrically conductive, force transmissive casing (20) encloses the force sensors, the identification means and the generating means.

Linvention décrite comporte un écran tactile (11) avec une pluralité de champs distincts (12) sur une surface, chaque champ (12) étant associé à une valeur dentrée. Une pluralité de capteurs de force (16, 17) est couplée à lécran (11) et disposée à des emplacements de capteur de force individuels pour détecter des forces individuelles en réponse au fait de toucher lécran (11) et pour générer des signaux de force individuels correspondants. Des moyens didentification sont prévus pour identifier un champ (12) qui est touché, sur la base des signaux de force, et des moyens de génération sont prévus pour générer la valeur dentrée associée au champ (12) qui est touché. Un boîtier électriquement conducteur et capable de transmettre une force (20) enferme les capteurs de force, les moyens didentification et les moyens de génération.

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