Pen input device
First Claim
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1. A pen input device comprising:
- a) a tablet having a top surface, and a plurality of reference lines provided at a constant pitch on the top surface in mutually perpendicular directions; and
b) a pointing device having;
1) a tip end,2) first means for radiating light on said tablet via the tip end, and3) second means including a single sensor for detecting both A) and B) based on scattered light received from said tablet;
A) a moving direction and a quantity of moving distance of the tip end of said pointing device on said tablet; and
B) a distance between the tip end of said pointing device and the top surface of said tablet.
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Abstract
A pen input device is provided with a tablet having a top surface and a plurality of reference lines provided at a constant pitch on the top surface in mutually perpendicular directions, and a pointing device having a tip end, a first device for irradiating light on the tablet via the tip end, and a second device for detecting a moving direction and a moving quantity of the tip end of the pointing device on the tablet and a distance between the tip end of the pointing device and the top surface of the tablet based on scattered light received from the tablet.
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Citations
11 Claims
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1. A pen input device comprising:
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a) a tablet having a top surface, and a plurality of reference lines provided at a constant pitch on the top surface in mutually perpendicular directions; and b) a pointing device having; 1) a tip end, 2) first means for radiating light on said tablet via the tip end, and 3) second means including a single sensor for detecting both A) and B) based on scattered light received from said tablet; A) a moving direction and a quantity of moving distance of the tip end of said pointing device on said tablet; and B) a distance between the tip end of said pointing device and the top surface of said tablet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification