Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Patent
1997-01-10
1999-02-02
Wu, Daniel J.
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
345169, 341 22, 3561415, 367129, 367907, G09G 508
Patent
active
058671463
ABSTRACT:
Three dimensional wireless pointing device for calculating coordinates and controlling a position of a cursor in a three dimensional space is disclosed, including a transmission side having a plurality of ultrasonic wave generating parts and a single infrared ray emitting part or a single ultrasonic wave generating part and a plurality of infrared ray emitting parts arranged in a certain axis direction at certain angles and a reception side having a plurality of infrared ray receiving sensors and a single ultrasonic wave receiving sensor arranged to cross the ultrasonic wave generating part(s) and the infrared ray emitting part(s) in the transmission side at a right angle, thereby to measure intensities of the infrared ray(s) and the ultrasonic wave(s) varied depending on direction of pointing and calculate a difference of relative traveling time periods of the infrared ray and the ultrasonic wave to obtain coordinate values of a position in a three dimensional space, whereby a position of cursor or menu, which is a control objective, can be controlled using the obtained coordinate values.
REFERENCES:
patent: 4578674 (1986-03-01), Baker et al.
patent: 5142506 (1992-08-01), Edwards
patent: 5144594 (1992-09-01), Gilchrist
patent: 5703623 (1997-12-01), Hall et al.
patent: 5710623 (1998-01-01), Kim
Chwa Duk Chin
Kim Jeong Yeol
LG Electronics Inc.
Wu Daniel J.
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