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

Claim 1:
2. The touchpad device as claimed in claim 1, the stylus pen emitting an electromagnetic signal, said touchpad device further comprising:
an antenna configured to receive the electromagnetic signal,
wherein said controller is configured to determine, based on an intensity of the electromagnetic signal received by said antenna, a distance between the stylus pen and said touchpad, and
wherein said controller is further configured to first operate in a scanning mode that includes steps of
determining whether the distance between the stylus pen and said 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 said touchpad is less than the preset pen-in-range distance.