Motion gesture sensing module and motion gesture sensing method

Abstract

A motion gesture sensing module according to the present invention comprises a light sensor unit having at least two or more photo detectors for detecting light reflected from a subject and a light source that emits light, and by putting an optical block in a light receiving path of the light sensor unit so as to separate the detectable area of each light detector, the motion gesture sensing module can distinguish the motion or gesture of the subject based on an output of the light sensor unit. A motion gesture sensing method according to the present invention is a non-contact motion sensing method which enables light emitted from the light source and light reflected by the subject to be received through at least two or more light detectors and enables the motion of the subject to be distinguished by comparing the output value of each light detector, wherein the detectable area of the light detector is separated and the light reflected by the subject is received to sense the motion of the subject. The present invention provides a motion gesture sensing module of low cost, low electric power and a subminiature size. Additionally, the motion gesture sensing module and the sensing method according to the present invention can sense the relative motion or gesture of the subject, sense a space touching function such as clicking a mouse, and distinguish whether the subject is close, thereby being capable of implementing all functions that existing proximity sensors have, including proximity sensing, reading mode, and power saving functions.

Description

technical field [0001] The invention relates to an action gesture sensing module and an action gesture sensing method, wherein light is emitted from a light source and light reflected from an object is detected to sense relative motion between the object and the sensing module. Background technique [0002] In recent years, portable devices such as smart phones, tablet personal computers (PCs), media players, e-readers, etc. have rapidly increased in popularity and such portable devices have become a necessity of modern life. As the popularity of portable devices has grown exponentially, various developments have been made in human-machine interface (HMIs) technologies. [0003] Traditional HMIs are typically implemented with keypads located in portable devices. However, in recent years, a technology of a user interface based on a touch sensor has been developed and widely used, and a technology of a user interface based on a motion sensor that senses a user's motion has al...

AI Technical Summary

Problems solved by technology

The motion gesture sensing system is flexible to the height h, but the minimum width w of the sensing system is limited by the distance between the two light sources (cf. figure 2 )

If the form factor (FF) is defined as the boundary factor, this sensing system requires three separate light sources and proximity sensor locations, resulting in a form factor that is too large to limit the design of portable devices

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