Patent ID: 9575575
Date: 2017-02-21
CPC Classifications: G06F

Claim:
1. A system comprising: a device including a user interface, a detector, and a central processing unit (CPU) in communication with the detector, wherein the CPU controls operation of the device; and a stylus, wherein the stylus includes a main body, an engagement member coupled to the main body, a magnet, and a field-altering metal cup having an internal structure, wherein the engagement member alters a mechanical relationship in response to being engaged by a user, wherein a portion of the magnet is moved into the internal structure of the metal cup in response to engagement of the engagement member, wherein the altered mechanical relationship includes an altered position of the magnet in relation to the main body and the engagement member in response to the engagement member being engaged by the user, wherein the stylus generates a signal in response to the altered mechanical relationship, wherein the signal includes a changing characteristic of a magnetic field generated by magnet, wherein an amplitude of the magnetic field is attenuated when the portion of the magnet is moved into the internal structure of the metal cup, wherein the detector detects the signal generated by the stylus, and wherein the CPU performs an action in response to detection of the signal.