Patent ID: 8482538

Claim:
Apparatus for detecting proximity of an object, the apparatus comprising: an input panel comprising at least one detection element; and at least one circuit configured to: determine, from a first input frame in which input is received via the at least one detection element, a first representation of possible proximity of the object to the input panel; determine, from a second input frame in which input is received via the at least one detection element, the second input frame being generated after the first input frame, a second representation of possible proximity of the object to the input panel; determine, from a third input frame in which input is received via the at least one detection element, the third input frame being generated after the second input frame, a third representation of possible proximity of the object to the input panel; and determine whether proximity of the object to the input panel is detected for the second input frame, at least in part by: if the first and second representations are not similar, determining whether proximity of the object to the input panel is detected for the second input frame based at least in part on whether the second and third representations are similar; wherein the at least one circuit is configured to determine whether proximity of the object to the input panel is detected for the second input frame at least in part by: determining that the first and second representations are not similar when the second representation comprises an indication of a first position of a detection of possible proximity of the object to the input panel for the second input frame and the first representation does not indicate a detection of possible proximity of the object to the input panel for the first input frame at a position similar to the first position; and if the third representation does not indicate a detection of possible proximity of the object to the input panel for the third input frame at a position similar to the first position, determining that proximity of the object to the input panel is not detected for the second input frame.