公开(公告)号：US20190012034A1

公开(公告)日：2019-01-10

申请号：US16130888

申请日：2018-09-13

Applicant: SHENZHEN GOODIX TECHNOLOGY CO., LTD.

Inventor： YINGSI LIANG ,  YA-NAN WEN

IPC: G06F3/041

Abstract: A noise sensing circuit is provided according to the disclosure. The noise sensing circuit includes a first filter, which is coupled to a plurality of receiving electrodes, and configured for receiving a plurality of reception signals corresponding to the plurality of receiving electrodes, and performing a high pass filtering operation or a band pass filtering operation on the plurality of reception signals to generate a filtering result; a down-sampling unit, which is coupled to the first filter, and configured for performing a down-sampling operation on the filtering result to generate a down-sampling result; and a noise detection unit, which is coupled to the down-sampling unit, and configured for determining a first operating frequency of the touch device according to the down-sampling result.

公开(公告)号：US20190265857A1

公开(公告)日：2019-08-29

申请号：US16406690

申请日：2019-05-08

Applicant: SHENZHEN GOODIX TECHNOLOGY CO., LTD.

Inventor： HSIN-JUI CHOU ,  YA-NAN WEN ,  YINGSI LIANG

IPC: G06F3/041 ,  G06F3/047

Abstract: A touch controller (16) includes: a signal generating module (12), coupled to a plurality of transmit electrodes (TE1˜TEM) of a touch panel, and is configured to output a first transmitting signal to a first transmit electrode (TEa) and simultaneously output a second transmitting signal to a second transmit electrode (TEb), wherein the first transmitting signal has a first phase, the second transmitting signal has a second phase; and a demodulating module (14), coupled to a plurality of receive electrodes (RE1˜REN) of the touch panel, and is configured to calculate a first amplitude (A) corresponding to the first phase and a second amplitude (B) corresponding to the second phase of the receiving signal according to a receiving signal (RXn) of a receive electrode (REn) of the plurality of receive electrodes.

公开(公告)号：US20190163305A1

公开(公告)日：2019-05-30

申请号：US16207827

申请日：2018-12-03

Applicant: SHENZHEN GOODIX TECHNOLOGY CO., LTD.

Inventor： YA-NAN WEN ,  HONG JIANG ,  YINGSI LIANG

IPC: G06F3/041 ,  G06F3/044 ,  G06F1/16 ,  G06F1/3296

Abstract: The present disclosure provides a mobile device. The mobile device includes a casing, configured to accommodate or support the mobile device; a thin touchscreen, including at least one driving electrode and at least one receiving electrode, wherein the driving electrode is configured to receive a driving signal, and the receiving electrode is configured to generate a sensing signal to sense a touch operation; a capacitive sensing system, including a sense circuit, coupled to the at least one receiving electrode and configured to generate the driving signal and receive the sensing signal to determine the touch operation; and a power supply unit, configured to output a supply voltage and a ground voltage; and an isolation module, configured to isolate the supply voltage from the ground voltage.

公开(公告)号：US20190074843A1

公开(公告)日：2019-03-07

申请号：US16179405

申请日：2018-11-02

Applicant: SHENZHEN GOODIX TECHNOLOGY CO., LTD.

Inventor： YA-NAN WEN ,  YINGSI LIANG

IPC: H03M1/08 ,  H03M3/00

CPC classification number: H03M1/08 ,  H03M3/424 ,  H03M3/45 ,  H03M3/452 ,  H03M3/454 ,  H03M3/456 ,  H03M3/46 ,  H03M3/462 ,  H03M7/3026

Abstract: The present disclosure provides a converting module formed in a first die. The first die is coupled to a bus having a bus bit width. The converting module includes an analog-to-digital converter, configured to generate a first digital signal having a first bit width different from the bus bit width; and a sigma-delta modulator, coupled to the analog-to-digital converter, and configured to generate a second digital signal according to the first digital signal. The second digital signal has a bit width equal to the bus bit width. The sigma-delta modulator includes a filter and a quantizer. The number of bits outputted by the quantizer is equal to the bus bit width.

公开(公告)号：US20190073060A1

公开(公告)日：2019-03-07

申请号：US16179271

申请日：2018-11-02

Applicant: SHENZHEN GOODIX TECHNOLOGY CO., LTD.

Inventor： YA-NAN WEN ,  YINGSI LIANG

IPC: G06F3/044 ,  H03K17/96

Abstract: The present disclosure provides a capacitance detection circuit, which includes a sense circuit coupled to a plurality of receive electrodes and configured to generate a plurality of sense results, the plurality of sense results being associated with capacitance between a plurality of transmit electrodes and the plurality of receive electrodes; and a first driving circuit coupled to the plurality of transmit electrodes; wherein when the first driving circuit keeps at least one first transmit electrode of the plurality of transmit electrodes floating, the first driving circuit generates at least one first driving signal and sends the least one first driving signal to at least one second transmit electrode of the plurality of transmit electrodes, to compensate a baseline current between the plurality of receive electrodes and a ground terminal.