Method and apparatus for quasi-3D tracking using 2D optical motion sensors

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United States of America Patent

PATENT NO 8314774
SERIAL NO

11825887

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Abstract

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One embodiment relates to a user input device for tracking motion. The device includes a tracking ball and a user-accessible touching area for user manipulation of the tracking ball. First and second two-dimensional sensors are positioned at tracking heights away from the tracking ball. The first two-dimensional sensor may be positioned across the tracking ball and opposite to the user-accessible touching area. The second two-dimensional sensor may be positioned at an angle with respect to a z-axis defined as extending from the user-accessible touching area through a center of the tracking ball to the first two-dimensional sensor. Other embodiments, aspects and features are also disclosed.

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Patent Owner(s)

  • CYPRESS SEMICONDUCTOR CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Frame, John Arcadia, US 10 114
Sanders, Steven Belmont, US 53 1758
Spurlock, Brett A Los Altos, US 6 25
Xu, Yansun Mt. View, US 34 563
Zeng, Ke-Cai Fremont, US 17 42

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