Pen-based handwritten character recognition and storage system
First Claim
1. A device for writing and processing handwriting comprising:
- a body;
a marking element for making strokes comprising a character on a surface, the marking element being coupled to the body;
a detector for detecting each stroke on the surface, and a processor coupled to the detector, wherein the detector and processor are disposed within the body; and
wherein the detector comprises;
an array that includes at least one photo emitter and at least one photo detector;
wherein at least one photo emitter emits light towards the marking element to illuminate the strokes; and
wherein at least one photo detector (a) has a field of view that includes the marking element, (b) detects the strokes using the light reflected off the surface, (c) converts the detected strokes into electronic signals, and (d) sends the electronic signals to the processor; and
wherein the array is in the shape of a ring, with the center of the ring perpendicular to a z-axis that passes through a center of the marking element and is parallel to a major axis of the device.
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Accused Products
Abstract
The present invention is directed to an improved system and method in which a pen-sized and shaped device detects, recognizes and stores handwriting as it is written by the device. The invention employs both an active feedback network and a character recognition methodology of partitioning detected input into character components. The active feedback network continually monitors device output to determine the sufficiency of the data input. If the data input is insufficient, the device modifies its detection methodology to obtain data the device readily recognizes. Data recognition is performed in multiple asynchronous processes. Elements of individual characters are sampled by the detector. Character elements are processed and recognized on this elemental level. Recognized character elements are stored for subsequent assembly and recognition on a character level. Thus, preferably two recognition sub-processes take place, one on a character element level and another on a character level.
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Citations
71 Claims
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1. A device for writing and processing handwriting comprising:
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a body;
a marking element for making strokes comprising a character on a surface, the marking element being coupled to the body;
a detector for detecting each stroke on the surface, and a processor coupled to the detector, wherein the detector and processor are disposed within the body; and
wherein the detector comprises;
an array that includes at least one photo emitter and at least one photo detector;
wherein at least one photo emitter emits light towards the marking element to illuminate the strokes; and
wherein at least one photo detector (a) has a field of view that includes the marking element, (b) detects the strokes using the light reflected off the surface, (c) converts the detected strokes into electronic signals, and (d) sends the electronic signals to the processor; and
wherein the array is in the shape of a ring, with the center of the ring perpendicular to a z-axis that passes through a center of the marking element and is parallel to a major axis of the device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A device for writing and processing handwriting comprising:
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a body;
a marking element for making strokes comprising a character on a surface, the marking element being coupled to the body;
a detector for detecting each stroke on the surface, and a processor coupled to the detector, wherein the detector and processor are disposed within the body, wherein the detector comprises;
a photo emitter mounted on a first side of the device, wherein said photo emitter emits light towards the marking element to illuminate the strokes;
a first photo detector mounted on a second side of the device, wherein said first photo detector (a) has a first field of view that includes the marking element, (b) detects the strokes using the light reflected off the surface, (c) converts the detected strokes into electronic signals, and (d) sends the electronic signals to the processor; and
a second photo detector mounted on a third side of the device, wherein said second photo detector (a) has a second field of view that includes the marking element, (b) detects the strokes using the light reflected off the surface, (c) converts the detected strokes into electronic signals, and (d) sends the electronic signals to the processor. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A device for writing and processing handwriting comprising:
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a body;
a marking element for making strokes comprising a character on a surface, the marking element being coupled to the body;
a detector for detecting each stroke on the surface, and a processor coupled to the detector, wherein the detector and processor are disposed within the body, wherein the detector comprises;
a multi-segment photo emitter mounted on the device, wherein said multi-segment photo emitter emits light towards the marking element to illuminate the strokes;
a first photo detector mounted on a first side of the device, wherein said first photo detector (a) has a first field of view that includes the marking element, (b) detects the strokes using the light reflected off the surface, (c) converts the detected strokes into electronic signals, and (d) sends the electronic signals to the processor; and
a second photo detector mounted on a second side of the device, wherein said second photo detector (a) has a second field of view that includes the marking element, (b) detects the strokes using the light reflected off the surface, (c) converts the detected strokes into electronic signals, and (d) sends the electronic signals to the processor. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71)
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Specification