DISPLAY LATENCY COMPENSATION RESPONSIVE TO AN INDICATOR OF AN IMPENDING CHANGE IN A HAND-INITIATED MOVEMENT

摘要

Described embodiments include an apparatus and a method. In an apparatus, a tracking circuit detects a segment of a path defined by a user contact point moving across a touch sensitive display. A filter predicts a next contiguous segment of the path defined by the user contact point in response to an adaptively learned motion parameter. The adaptively learned motion parameter is based on at least two previous instances of the determined motion parameters respectively descriptive of a motion of a user contact point during its movement across the touch sensitive display. A compensation circuit initiates a display by the touch sensitive display of the detected segment of the path and the predicted next contiguous segment of the path. An updating circuit updates the detected segment of the path and the predicted next contiguous segment of the path as the user contact point moves across the touch sensitive display.

主权项

1. An apparatus comprising:
a touch tracking circuit configured to detect a segment of a path defined by a user contact point moving across a touch sensitive display; a motion analysis circuit configured to determine
(i) a parameter descriptive of a motion of the user contact point during its movement across the detected segment of the path (hereafter “motion parameter”), and(ii) an indicator of an impending change in the motion of the user contact point occurring during its movement across the detected segment of the path (hereafter “indicator parameter”); a predictive filter configured to predict, in response to the motion parameter and the indicator parameter, a next contiguous segment of the path defined by the user contact point; a latency compensation circuit configured to initiate a display, by the touch sensitive display, of the detected segment of the path and the predicted next segment of the path; and an updating circuit configured to update the detected segment of the path, the motion parameter, the indicator parameter, and the predicted next contiguous segment of the path as the user contact point moves across the touch sensitive display.