Patent ID: 6215478
Filing Date: 2001-04-10
Classification: G05G,G06F

Abstract:
A high resolution finger controlled input device movable over an arbitrarily defined range, comprising:a finger controlled element having a plurality of thin layered sensing surfaces, which when closely scribed, can produce 0 and 1 binary signals representing a relative displacement of the input device; anda formative positioning unit, capable of producing 0 and 1 signals in any defined range divided by coordinate axes, wherein a total number of signals 0, 1 for each axis is divided into numbers of signals CN for each of a plurality of different speed regions,wherein C1 represents a number of signals in a low speed region and C2 . . . CN represent numbers of signals in higher speed regions,wherein each speed region corresponds to a different respective displacement multiple rate K1, K2 . . . KN,wherein a product of C1, C2 . . . CN with each respective corresponding displacement multiple rate K1, K2 . . . KN is summed to obtain a value at least equal to a corresponding display resolution,wherein at least two recorders are installed for each axis to record numbers CN above C1 and C2, the sum of the data in the at least two recorders being C, andwherein said position unit is further arranged to add 2 to the sum C2 . . . CN, and to subtract 1 from C1 in order to keep the sum of data in all of the recorders, and therefore increase the sum by 1 so that the total displacement is 1;whereby a sensing surface of the finger controlled element is scribed to form an input range corresponding to an entire display resolution, which enables the finger controlling element to make low speed point-to-point fine displacement within said region, and when in high speed movement, to make an accelerated displacement and to enable return to the original point such that the cursor is able to be controlled effectively with respect to each point on the display.