METHOD AND APPARATUS FOR NAVIGATING SURFACE

PROBLEM TO BE SOLVED: To solve a problem wherein an image-based light sensor cannot perform well on some surfaces such as a glass surface, and to improve the navigation performance of a mouse with an image-based light sensor. SOLUTION: A surface is navigated by using a first light sensor mounted to...

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Bibliographische Detailangaben
Hauptverfasser: CHANG LYE HOCK BERNARD, LAKSHMANAN SRINIVASAN
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To solve a problem wherein an image-based light sensor cannot perform well on some surfaces such as a glass surface, and to improve the navigation performance of a mouse with an image-based light sensor. SOLUTION: A surface is navigated by using a first light sensor mounted to a navigation device to detect light reflected from the surface, and using outputs of the first light sensor over time to determine the relative movement of the navigation device with respect to the surface. While using the first light sensor, if the outputs of the first light sensor over time are not indicating movement of the navigation device with respect to the surface, a second light sensor that is mounted to the navigation device, and of a different type than the first light sensor, is used to detect light reflected from the surface, and outputs of the second light sensor over time are used to determine the relative movement of the navigation device with respect to the surface. COPYRIGHT: (C)2008,JPO&INPIT