US Patent 7230610 Keypad in textiles with capacitive read-out circuit

Input apparatus including at least one textile fabric carrier, at least one flexible, wire-and/or thread-like electrical conductor comprising at least one weft and/or warp thread of the fabric carrier, and at least one electrically conductive, flexible key device which is electrically connected to a key connection of the conductor, wherein the conductor is designed for the connection of an evaluation device.