System and method for optically detecting a click event

Details System and method for optically detecting a click event System and method for optically detecting a click event

2007-12-25

2007-12-25

Johns, Andrew W. (Department: 2624)

Image analysis

Applications

Motion or velocity measuring

C345S163000, C345S166000, C250S221000

Reexamination Certificate

active

10440709

ABSTRACT:
An imaging system captures a sequence of images representing finger lift-up and finger put-down motions over a sensing area and produces an image signal for use in detecting a click event. At least one light source illuminates a finger interface upon which a user places a finger (or thumb). Light reflected from the finger is captured by an image sensor as image data corresponding to the sequence of images. At least one image signal is produced in connection with or based on the image data. The image signal is used to detect a finger lift-up or finger put-down motion. A click, such as a single click, double click or triple click, is detected based on a combination of finger lift-up and finger put-down motions within a configurable time range.

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Search Report Under Section 17 dated Sep. 28, 2004.

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