WRITING USING A TOUCH SENSOR
First Claim
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1. A method comprising the steps of:
- a. examining a human hand with respect to sensor surface and periodically producing first indications regarding the nature and position of sensed contacts, the contacts comprising identified portions of the hand;
b. evaluating a first set of the first indications to determine if the character of sensed contacts is consistent with a hand gripping a writing implement for writing on the sensor surface;
c. evaluating a second set of the first indications to determine if the character of sensed contacts is consistent with a hand gripping a writing implement for writing on the sensor surface;
d. if the character of both the first set and the second set are both consistent with gripping a writing implement, producing second indications regarding the perceived motion of the perceived writing implement.
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Abstract
Apparatus and methods are disclosed for simultaneously tracking multiple finger and palm contacts as hands approach, touch, and slide across a proximity-sensing, multi-touch surface. Identification and classification of intuitive hand configurations and motions enables unprecedented integration of typing, resting, pointing, scrolling, 3D manipulation, and handwriting into a versatile, ergonomic computer input device.
234 Citations
16 Claims
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1. A method comprising the steps of:
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a. examining a human hand with respect to sensor surface and periodically producing first indications regarding the nature and position of sensed contacts, the contacts comprising identified portions of the hand;
b. evaluating a first set of the first indications to determine if the character of sensed contacts is consistent with a hand gripping a writing implement for writing on the sensor surface;
c. evaluating a second set of the first indications to determine if the character of sensed contacts is consistent with a hand gripping a writing implement for writing on the sensor surface;
d. if the character of both the first set and the second set are both consistent with gripping a writing implement, producing second indications regarding the perceived motion of the perceived writing implement. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A contact evaluation system comprising:
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e. a contact identification unit that examines contacts with respect to a sensor surface and produces first indications regarding the nature and position of sensed contacts, the sensed contacts comprising identified portions of a human hand;
f. a handwriting detection unit that evaluates a plurality of first indications to determine if the character of sensed contacts is consistent with a hand gripping a writing implement and writing on the sensor surface;
g. an event generator that generates an event if the character of the sensed contacts is consistent with a hand gripping a writing implement and writing. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification