Patent ID: 6353433
Filing Date: 2002-03-05
Classification: G06F

Abstract:
A method implemented by a microprocessor for transferring information from a digitizer to a connected computer, the digitizer having a surface adapted to work with a pointer via sensors which sense the position of the pointer on the surface in a coordinate system of the digitizer and report such position to the microprocessor, which coordinate system of the digitizer has a point of origin with respect to the digitizer, the microprocessor being located in the digitizer or another digitizer or a digitizer interface located outside of the computer, comprising:(a) receiving a definition of boundaries of a region within the range of movement of the pointer and smaller than the range of movement of the pointer having a second coordinate system for output from the digitizer, which second coordinate system allows specification of points sensed in the digitizer's coordinate system but is not congruent with the digitizer's coordinate system because the location of the point of origin is different from the digitizer's coordinate system; (b) receiving from the sensors, in the coordinate system of the digitizer, a plurality of coordinates for a plurality of specified points; and (c) translating the coordinates of the digitizer's coordinate system into coordinates of the second coordinate system for the points; and (d) providing the coordinates of the second coordinate system for the points to the computer.