Back to results
US 6,897,854 B2Granted
Electronic pen input device and coordinate detecting method therefor
AssigneeSamsung Electronics Co., Ltd.
InventorsYong-chul Cho, Suk-han Lee, Kyoung-sig Roh, Jae-won Lee
Life of this patent
Estimating the term…
Abstract
A electronic pen input device and a coordinate determining method are provided. The electronic pen input device includes an optical 3-dimensional detecting device for detecting orientation angles of a centerline of the pen relative to a ground and a height of the pen over a writing surface, a 3-axis accelerometer for detecting a movement of the pen, and a communication means for sending the detected information to a post processing device.
Claims24
An electronic pen input comprising:
- an optical 3-dimensional detecting device that radiates light and detects reflections of the radiated light for detecting orientation angles of a centerline of the pen relative to a ground and a height of the pen over a writing surface;
- a 3-axis accelerometer for detecting a movement of the pen;
- and
- a communication means for sending the detected information to a post processing device.
1 more element
A coordinate detecting method comprising:
- (a) detecting three-directional orientation angles of a pen with respect to a writing surface and a height therebetween and detecting a movement of the pen, based on light reflected off the writing surface;
- (b) transmitting the orientation angles, the height and the movement information to a signal processor so as to determining a position of a tip portion of the pen;
- and
- (c) sending the position information to a terminal device by using a communication means.
1 more element
A coordinate determining method comprising:
- (a) measuring orientation angles of a pen relative to a writing surface and a height thereof over the writing surface and measuring acceleration signals of the pen, based on light reflected off the writing surface;
- (b) sending the measured signals to a terminal through a communication means;
- and
- (c) transforming the orientation angle, the height and the acceleration signals by a processor in the terminal so as to determine a position of the pen.
1 more element
Dependencies are inferred from the claim text.