Patent ID: 7215330

Claim:
A touch-sensitive surface comprising two films ( 2 , 4 ) facing each other and means for keeping these two films a certain distance apart when no pressure is exerted on the surface, characterized in that each film ( 2 , 4 ) has, on its face turned toward the other film: an array of conducting tracks ( 6 , 8 ) that do not touch one another, each having a low resistance; a resistive band ( 12 , 16 ); resistive elements ( 10 , 14 ), each resistive element ( 10 , 14 ) connecting a conducting track ( 6 , 8 ) to the resistive band ( 12 , 16 ); and wherein each end of the resistive band ( 12 , 16 ) is connected to a connection port ( 19 , 21 , 23 , 25 ) and in that one end is connected to its connection port ( 21 ) via a resistive component ( 26 ) of known resistance (R/ 5 ) mounted in parallel with a diode ( 28 ).