METHOD AND DEVICE FOR OPTICAL TRACKING OF BALL HOUSED IN POSITION INPUT DEVICE FOR COMPUTER

PROBLEM TO BE SOLVED: To provide a method for determining the motion of a mouse and a joy stick at a lower cost like a shaft encoder while having advantage of optical tracking technology. SOLUTION: This method is for controlling a position of a cursor or a pointer by mechanical motion, in which a st...

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Bibliographic Details
Main Author BADYAL RAJEEV
Format Patent
LanguageEnglish
Published 26.05.2000
Edition7
Subjects
CALCULATING
COMPUTING
CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BYMECHANICAL FEATURES ONLY
CONTROLLING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
REGULATING
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Summary:PROBLEM TO BE SOLVED: To provide a method for determining the motion of a mouse and a joy stick at a lower cost like a shaft encoder while having advantage of optical tracking technology. SOLUTION: This method is for controlling a position of a cursor or a pointer by mechanical motion, in which a step to freely rotatably support a part of a ball 3 with a microtexture on its surface (4, 14 and 15), a step to transmit the mechanical motion to the ball so that it is rotated, a step to illuminate 5 a part of the ball 3, a step to form 6 an image of the illuminated microtexture on an optical position tracking circuit 7 generating a position control signal that indicates a change of a relative position of a pattern in accordance with the rotation of the ball 3 and a step to transmit 13 the position control signal to a device like a computer are included, and the device to execute the method is provided.
Bibliography:Application Number: JP19990285731