公开(公告)号：US20230280843A1

公开(公告)日：2023-09-07

申请号：US18117003

申请日：2023-03-03

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Weijen Chang ,  Chin-Lin Lee

IPC: G06F3/0354 ,  H04W72/21 ,  G06F3/041 ,  G06F3/044 ,  G06F3/038

CPC classification number: G06F3/03545 ,  H04W72/21 ,  G06F3/04182 ,  G06F3/04162 ,  G06F3/0441 ,  G06F3/0442 ,  G06F3/0383

Abstract: An active stylus and a method performed by the active stylus are provided. The active stylus includes a touch sensor inside. The touch sensor is arranged corresponding to a preset pen-holding region on an outer surface. The touch sensor is insulated from the pen body, when an external operating subject touches the preset pen-holding region and touches a touch panel, an uplink signal transmitted by the touch panel is coupled to the pen body via the external operating subject, as an uplink interference signal. The signal processing unit is for: generating a compensation signal; obtaining a compensated interference signal generated based on the compensation signal and the uplink interference signal; generating an uplink signal to be processed based on the received uplink signal and the compensated interference signal; and obtaining uplink information based on the uplink signal to be processed.

公开(公告)号：US11954271B2

公开(公告)日：2024-04-09

申请号：US18117003

申请日：2023-03-03

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Weijen Chang ,  Chin-Lin Lee

IPC: G06F3/0354 ,  G06F3/038 ,  G06F3/041 ,  G06F3/044 ,  H04W72/21

CPC classification number: G06F3/03545 ,  G06F3/0383 ,  G06F3/04162 ,  G06F3/04182 ,  G06F3/0441 ,  G06F3/0442 ,  H04W72/21

Abstract: An active stylus and a method performed by the active stylus are provided. The active stylus includes a touch sensor inside. The touch sensor is arranged corresponding to a preset pen-holding region on an outer surface. The touch sensor is insulated from the pen body, when an external operating subject touches the preset pen-holding region and touches a touch panel, an uplink signal transmitted by the touch panel is coupled to the pen body via the external operating subject, as an uplink interference signal. The signal processing unit is for: generating a compensation signal; obtaining a compensated interference signal generated based on the compensation signal and the uplink interference signal; generating an uplink signal to be processed based on the received uplink signal and the compensated interference signal; and obtaining uplink information based on the uplink signal to be processed.