公开(公告)号：US10761661B2

公开(公告)日：2020-09-01

申请号：US16037433

申请日：2018-07-17

Applicant: Silicon Integrated Systems Corp

Inventor： Chin-Hua Kuo ,  Hsin-Hsuan Yu ,  Jiun-Ying Yeh ,  Ying-Jyh Yeh

IPC: G06F3/044 ,  G06F3/041 ,  G06F3/0354

Abstract: A capacitive touch system and a sensing method thereof are disclosed. The capacitive touch system includes a touch panel; a touch control chip; and an active pen which includes a receiving part, a transmitting part, a control unit, and a pressure sensing element. The control unit controls the transmitting unit to output a pen driving signal according to a pen sensing signal. The pressure sensing element detects a pen pressure signal. The control unit outputs a voltage signal in responsive to the pen pressure signal after a time delay period. In the capacitive touch system and the sensing method thereof, the active pan is not required to be paired with the touch panel.

公开(公告)号：US20200186089A1

公开(公告)日：2020-06-11

申请号：US16687708

申请日：2019-11-19

Applicant: Silicon Integrated Systems Corp.

Inventor： Wen-Chi LIN ,  Keng-Nan Chen

IPC: H03D13/00 ,  H01L29/872 ,  G04F10/00 ,  H03L7/093

Abstract: A frequency detector is used for detecting a frequency difference of a signal to be tested from a first time point to a second time point. The frequency detector includes: an alternating current coupled capacitor configured to receive the signal to be tested; a rectifying circuit electrically connected to the alternating current coupled capacitor; an analog-to-digital converter electrically connected to the rectifying circuit; a control unit electrically connected to the analog-to-digital converter; and a counter electrically connected to the rectifying circuit and the control unit, wherein the control unit is configured to calculate the frequency difference of the signal to be tested from the first time point to the second time point according to outputs of the analog-to-digital converter and outputs of the counter.

公开(公告)号：US10570008B2

公开(公告)日：2020-02-25

申请号：US15668844

申请日：2017-08-04

Applicant: SILICON INTEGRATED SYSTEMS CORP.

Inventor： Ssu-Che Yang ,  Wen-Chi Lin ,  Keng-Nan Chen

IPC: B81B7/00 ,  B81B7/04 ,  H04R3/04 ,  G01R17/04 ,  H02M3/07

Abstract: A sensing device includes a micro-electromechanical sensor, a source follower and an amplifier. The source follower includes a first output module including a first transistor and a second transistor. The micro-electromechanical sensor is configured to generate an input signal. A first terminal of the first transistor is configured to receive a first reference voltage. A second terminal and a control of the first transistor are electrically connected to the first output terminal and to a first current source respectively. A first terminal and a second terminal of the second transistor are electrically connected to the second terminal and the control terminal of the first transistor respectively. A control terminal of the second transistor is configured to receive the input signal. A first input terminal and a second input terminal of the amplifier are electrically connected to a first output terminal configured to receive a common-mode voltage respectively.

公开(公告)号：US20190317633A1

公开(公告)日：2019-10-17

申请号：US16382702

申请日：2019-04-12

Applicant: Silicon Integrated Systems Corp

Inventor： Tsung-Hua TSAI ,  Ying-Jyh YEH

IPC: G06F3/041 ,  G06F3/01 ,  G06N3/02 ,  G06F3/0488

Abstract: A method for identifying tap events on a touch panel includes measuring vibration signals for tap events on the touch panel to collect the tap events and record types of the tap events as samples; generating a sample set including a plurality of samples; using the sample set to train a deep neural network to determine an optimized weighting parameter group; taking the deep neural network and the optimized weighting parameter group as a tapping classifier and deploying it to a touch-controlled end product; and obtaining a predicted tap type based on a vibration signal and an image formed by touch sensing values detected by the touch-controlled end product to which a tap operation is performed. The present disclosure also provides a system corresponding to the identifying method, and a touch-controlled end product.

公开(公告)号：US10141897B2

公开(公告)日：2018-11-27

申请号：US15831220

申请日：2017-12-04

Applicant: SILICON INTEGRATED SYSTEMS CORP.

Inventor： Ssu-Che Yang ,  Wen-Chi Lin ,  Keng-Nan Chen

IPC: H03F1/14 ,  H03F1/34 ,  H03F1/32 ,  H03F3/345 ,  H03F3/50 ,  H03K5/02 ,  H03F3/347

Abstract: A source follower includes a first transistor, a first output module, a second transistor, a second output module and a feedback module. The first terminal and the control terminal of the first transistor are configured to respectively receive a first base voltage and a first control voltage. The second terminal of the first transistor and the first output module are electrically connected to a first output terminal. The first terminal and the control terminal of the second transistor are configured to respectively receive a first base voltage and a second control voltage. The second terminal of the second transistor and the second output module are electrically connected to a second output terminal. The feedback module is electrically connected to the control terminal of the first transistor, the control terminal of the second transistor and a reference node of the second output module.

公开(公告)号：US10122337B2

公开(公告)日：2018-11-06

申请号：US15669798

申请日：2017-08-04

Applicant: SILICON INTEGRATED SYSTEMS CORP.

Inventor： Ssu-Che Yang ,  Wen-Chi Lin ,  Keng-Nan Chen

IPC: H03G1/00 ,  H03F1/02 ,  H03F1/26 ,  H03F3/45 ,  H03G3/00

Abstract: A programmable gain amplifier includes an active load module, a first differential pair, a second differential pair and a power source module. The first and second differential pairs are electrically connected to the active load module. The power source module is electrically connected to the first current source end of the first differential pair and the second current source end of the second differential pair. The power source module supplies a first current to the first differential pair through the first current source end. The power source module supplies a second current to the second differential pair through the second current source end. The power source module adjusts the potential of the first current, the potential of the second current, or both.

公开(公告)号：US20180160233A1

公开(公告)日：2018-06-07

申请号：US15826484

申请日：2017-11-29

Applicant: SILICON INTEGRATED SYSTEMS CORP.

Inventor： Ssu-Che YANG ,  Wen-Chi LIN ,  Keng-Nan CHEN

IPC: H04R19/00 ,  H04R19/04

CPC classification number: H04R19/005 ,  B81B2201/0257 ,  H04R3/00 ,  H04R19/04

Abstract: A sensing device comprises a charge pump, a MEMS sensor, a source follower and a PGA. The charge pump is configured to provide a pump voltage. The MEMS sensor is electrically connected to the charge pump and configured to generate an input voltage according to environment variations. The source follower is electrically connected to the MEMS sensor and configured to generate a followed reference voltage according to the pump voltage and to generate a followed input voltage according to the input voltage. The PGA has an input end of the PGA electrically connected to the source follower and is configured to generate two-ended differential output voltages outputted through a first output end and a second output end according to a difference between the followed reference voltage and the followed input voltage.

公开(公告)号：US20180159485A1

公开(公告)日：2018-06-07

申请号：US15831220

申请日：2017-12-04

Applicant: SILICON INTEGRATED SYSTEMS CORP.

Inventor： Ssu-Che YANG ,  Wen-Chi Lin ,  Keng-Nan Chen

IPC: H03F1/34 ,  H03F1/32 ,  H03F3/345 ,  H03F3/347 ,  H03F3/50 ,  H03K5/02

CPC classification number: H03F1/342 ,  G05F1/00 ,  H03F1/301 ,  H03F1/3205 ,  H03F3/345 ,  H03F3/347 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/505 ,  H03F2200/135 ,  H03F2200/447 ,  H03F2203/5012 ,  H03K5/023

Abstract: A source follower includes a first transistor, a first output module, a second transistor, a second output module and a feedback module. The first terminal and the control terminal of the first transistor are configured to respectively receive a first base voltage and a first control voltage. The second terminal of the first transistor and the first output module are electrically connected to a first output terminal. The first terminal and the control terminal of the second transistor are configured to respectively receive a first base voltage and a second control voltage. The second terminal of the second transistor and the second output module are electrically connected to a second output terminal. The feedback module is electrically connected to the control terminal of the first transistor, the control terminal of the second transistor and a reference node of the second output module.

公开(公告)号：US20180152157A1

公开(公告)日：2018-05-31

申请号：US15669798

申请日：2017-08-04

Applicant: SILICON INTEGRATED SYSTEMS CORP.

Inventor： Ssu-Che YANG ,  Wen-Chi LIN ,  Keng-Nan CHEN

IPC: H03G1/00 ,  H03F1/02 ,  H03F1/26 ,  H03F3/45

CPC classification number: H03G1/0088 ,  H03F1/0233 ,  H03F1/26 ,  H03F3/45 ,  H03F3/45183 ,  H03F3/45215 ,  H03F3/45273 ,  H03F3/45475 ,  H03F2203/45026 ,  H03G1/0029 ,  H03G3/001

Abstract: A programmable gain amplifier includes an active load module, a first differential pair, a second differential pair and a power source module. The first and second differential pairs are electrically connected to the active load module. The power source module is electrically connected to the first current source end of the first differential pair and the second current source end of the second differential pair. The power source module supplies a first current to the first differential pair through the first current source end. The power source module supplies a second current to the second differential pair through the second current source end. The power source module adjusts the potential of the first current, the potential of the second current, or both.

公开(公告)号：US20170160859A1

公开(公告)日：2017-06-08

申请号：US15230278

申请日：2016-08-05

Applicant: SILICON INTEGRATED SYSTEMS CORP.

Inventor： Chia-Yi CHU ,  Song Sheng LIN

IPC: G06F3/041 ,  G06F3/0488 ,  G06F3/038 ,  G06F3/0354

CPC classification number: G06F3/0416 ,  G06F3/03545 ,  G06F3/0383 ,  G06F3/04883 ,  G06F2203/0384 ,  G06F2203/04104 ,  G06F2203/04106

Abstract: A dual-mode touch sensing method adapted for a stylus and a touch panel comprising N first signal lines and M second signal lines. The method comprises: sequentially controlling the N first signal lines to emit N corresponding pulse signals in N gesture periods in a scanning period, receiving M gesture feedback signals corresponding to the pulse signals via the M second signal lines in each among the N gesture periods, selectively generating a gesture signal based on the gesture feedback signals, determining a stylus period other than the N gesture periods in the scanning period by the stylus, generating a stylus signal in the stylus period by the stylus, and receiving the stylus signal and generating a stylus touching signal accordingly by the touch panel.