Patent ID: 9654185
Date: 2017-05-16
CPC Classifications: H04B

Claim:
1. An interactive communication method applicable to communication and interaction between an external device and a smart mobile device, wherein the smart mobile device comprises an E-compass sensor and a rotation detector, the external device has an AC magnetic emitter, and the interactive communication method comprises: providing a specific application program in the smart mobile device, wherein the specific application program is for acquiring a magnetic variation of the E-compass sensor; wherein executing operations of the external device comprise: encoding specific data into an encoded signal; and converting the encoded signal into an AC magnetic signal by the AC magnetic emitter; and wherein executing operations of the smart mobile device comprise: detecting the magnetic variation of the E-compass sensor through the specific application program; reading a reading of the rotation detector through the specific application program when the magnetic variation of the E-compass sensor is greater than a threshold variation; judging whether a variation of the reading of the rotation detector falls within a predetermined range or not; judging the magnetic variation of the E-compass sensor as the AC magnetic signal when the variation of the reading of the rotation detector falls within the predetermined range; and decoding the AC magnetic signal into the specific data.