Touch typing emulator for a flat surface
First Claim
1. A touch typing emulator for use on a surface comprisingtwo wave sensors (n=1, 2) adapted to be placed upon the surface, wherein said sensors are each capable of transmitting signals or changing states in response to the arrival at different times at said sensor of first and second acoustic waves of different known velocities travelling to said sensor in different media and caused by typing on the surface,a processor adapted to determine from said sensors the times of arrival T1(n) and T2(n) at sensor n of the two acoustic waves, and programmed to determine, from those times of arrival the time of touch typing
2 Assignments
0 Petitions
Accused Products
Abstract
A touch typing emulator to be placed on any flat surface is made from as few as two acoustic sensors connected by a wire that determines the separation between the sensors and is connected by a USB cable to a computer. The emulator receives two waves from each finger tap on the surface, a higher velocity wave and a lesser velocity wave. By affixing the sensors to a surface, the sensors, in connection with software in a computer receiving the USB connection, determines the location of the tapping of a users fingers on the surface and uses that information to emulate a typewriter keyboard.
17 Citations
10 Claims
-
1. A touch typing emulator for use on a surface comprising
two wave sensors (n=1, 2) adapted to be placed upon the surface, wherein said sensors are each capable of transmitting signals or changing states in response to the arrival at different times at said sensor of first and second acoustic waves of different known velocities travelling to said sensor in different media and caused by typing on the surface, a processor adapted to determine from said sensors the times of arrival T1(n) and T2(n) at sensor n of the two acoustic waves, and programmed to determine, from those times of arrival the time of touch typing
-
8. A method for touch typing upon a surface comprising the steps of placing two wave sensors (n=1, 2) upon the surface,
said sensors each transmitting signals or changing states in response to the arrival at different times at said sensors of first and second acoustic waves of different known velocities travelling through different media caused by touch typing on the surface, determining from said sensors the times of arrival T1(n) and T2(n) at sensor n of the two acoustic waves, and determining, from those times of arrival the time of touch typing
Specification