Pen out-of-proximity handwriting-recognition trigger
AssigneeMicrosoft Corporation
InventorsTetsuo Seto, Takanobu Murayama
Life of this patent
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Abstract
In a computer system that accepts handwritten input, a digitizer tracks the location of a user's pen while the pen is not in contact with the digitizer's writing surface. The digitizer maps the pen's three-dimensional location into a two-dimensional location on the digitizer's writing surface. Handwriting-recognition is triggered for handwriting entered into a handwriting-recognition task area upon detecting that the user has lifted the pen off of the digitizer's writing surface and that the pen has moved out of proximity from the handwriting-recognition task area. The handwriting-recognition triggering may be inhibited when the pen is down and in contact with the digitizer's writing surface in an inking orientation.
Claims11
A system that triggers handwriting recognition, the system comprising:
- a pen-down event handler that sets an inking flag to indicate that inking has started in a handwriting-recognition task area upon a pen-down event occurring in a core task area of the handwriting-recognition task area;
- a pen-up event handler that clears the inking flag to indicate that inking is not in progress upon occurrence of a pen-up event;
- and
- a pen-movement event handler that, while the inking flag is cleared and upon a pen-movement event occurring, triggers handwriting recognition upon determining that a pen's mapped location on a writing surface has moved outside of the handwriting-recognition task area.
A system that triggers handwriting recognition, the system comprising:
- a pen-down event handler that sets an inking flag to indicate that inking has started in a handwriting-recognition task area upon a pen-down event occurring in a core task area of the handwriting-recognition task area;
- and
- a pen-up event handler that, upon an occurrence of a pen-up event, clears the inking flag to indicate that inking is not in progress and that, while the inking flag is cleared, triggers handwriting recognition upon determining that the pen is up and that the pen's mapped location on the writing surface has moved outside of the handwriting-recognition task area.
A computer-readable medium containing computer-executable instructions for triggering handwriting-recognition by performing steps comprising:
- determining that a pen is down in an inking state;
- determining that the pen's mapped location on a writing surface is located within a first handwriting-recognition task area;
- determining that the pen has moved up thereby transitioning from the inking state to a non-inking state;
- and
- while the pen is up in the non-inking state, triggering handwriting recognition for handwriting entered in the first task area upon determining that the pen's mapped location on the writing surface has moved out of the first task area.
Dependencies are inferred from the claim text.