Patent ID: 8411068

Claim:
A method of detecting users' pressing action applied to an electronic apparatus, the electronic apparatus having at least an optical operating unit for an user to operate the electronic apparatus, the method of detecting the users' pressing action comprising steps of: detecting a deformation of a forcing object which forces the optical operating unit, the deformation of the forcing object being formed on a contacting surface of the optical unit and the forcing object; and determining whether the user performs a pressing action according to a deformation degree of the forcing object, wherein when the deformation degree is larger than a predetermined value, the pressing action performed by the user is determined; wherein the forcing object has a texture structure with stripes, the step of detecting the deformation of the forcing object comprises detecting an interval variation degree between at least two adjacent stripes or detecting a width variation degree of at least one of the stripes, and when the interval variation degree between at least two adjacent stripes changes to a value of 90% or smaller of an unforced value or the width variation degree of at least one of the stripes changes to 110% or larger of an unforced value, the pressing action performed by the user is determined.