STATE MACHINE BASED TRACKING SYSTEM FOR SCREEN POINTING CONTROL

摘要

Generally, this disclosure provides systems, devices, methods and computer readable media for state machine based pointing control. A method may include receiving a position estimate of a first location associated with a first portion of a pointing device and a position estimate of a second location associated with a second portion of the pointing device; calculating a vector from the estimated position of the first location to the estimated position of the second location; and resolving the vector into a first distance component (Dx) and a second distance component (Dy), the Dy component orthogonal to the Dx component. The method may further include tracking temporal changes of the Dx and Dy components; updating an interaction state based on a rate of change of the Dx and Dy components; and moving a cursor position on a display element screen based on the temporal change and the interaction state.

主权项

1. A system for pointing control, said system comprising:
vector calculation circuitry to:
receive a position estimate of a first location associated with a first portion of a pointing device and a position estimate of a second location associated with a second portion of said pointing device;calculate a vector from said estimated position of said first location to said estimated position of said second location; andresolve said vector into a first distance component (Dx) and a second distance component (Dy), said Dy component orthogonal to said Dx component; tracking circuitry to track temporal change of said Dx and Dy components and to calculate a rate of change of said Dx and Dy components; state machine circuitry to maintain and update an interaction state based on said rate of change of said Dx and Dy components; and screen coordinate update circuitry to move a cursor position on a display element screen to a new screen coordinate based on said temporal change and said interaction state.