System and method for optically detecting a click event
First Claim
1. A method for detecting a finger click motion, comprising:
- receiving an image signal associated with an image of a portion of a human finger within a sensing area of an optical sensor; and
analyzing said image signal to determine whether said image signal is indicative of a finger click motion.
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Accused Products
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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Citations
26 Claims
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1. A method for detecting a finger click motion, comprising:
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receiving an image signal associated with an image of a portion of a human finger within a sensing area of an optical sensor; and
analyzing said image signal to determine whether said image signal is indicative of a finger click motion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An imaging system, comprising:
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a finger interface having a sensing area on a surface thereof against which at least a portion of a human finger may be placed;
a light source for emitting light to illuminate the portion of the human finger placed against the surface of the finger interface; and
an optical image sensor for capturing light reflected from the portion of the human finger as an image thereof and producing an image signal associated with the image for use in detecting a finger click motion. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification