Patent ID: 11941189
Assignee: SUNREX TECHNOLOGY CORP.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 6:
7. The operation method as claimed in claim 6, the stylus pen emitting an electromagnetic signal, the touchpad device further including an antenna that receives the electromagnetic signal, the operation method further comprising steps of:
determining, based on an intensity of the electromagnetic signal received by the antenna, a distance between the stylus pen and the touchpad; and
operating in a scanning mode that includes steps of
determining whether the distance between the stylus pen and the touchpad is less than a preset pen-in-range distance that is greater than the preset pen-hover distance;
not outputting any control signal to the electronic device; and
switching to the stylus-pen mode when it is determined that the distance between the stylus pen and the touchpad is less than the preset pen-in-range distance.