公开(公告)号：US20220171515A1

公开(公告)日：2022-06-02

申请号：US17672718

申请日：2022-02-16

Applicant: NOVATEK Microelectronics Corp.

Inventor： Yu-Chung Lin ,  He-Wei Huang ,  Chun-Ching Huang ,  Yao-Ren Fan

IPC: G06F3/041

Abstract: A controller of a touch display device is configured to perform steps of: transmitting a main uplink signal to an input device, the main uplink signal indicating an amount of a plurality of downlink signals transmitted in a frame; transmitting a first sub-uplink signal to the input device, the first sub-uplink signal notifying the input device of a time length of a first downlink signal among the plurality of downlink signals; transmitting a second sub-uplink signal to the input device, the second sub-uplink signal notifying the input device of a time length of a second downlink signal among the plurality of downlink signals; and receiving the plurality of downlink signals from the input device.