公开(公告)号：US11026026B2

公开(公告)日：2021-06-01

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: H04R3/00 ,  H04R19/00 ,  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：US10817085B2

公开(公告)日：2020-10-27

申请号：US15840236

申请日：2017-12-13

Applicant: SILICON INTEGRATED SYSTEMS CORP.

Inventor： Keng-Nan Chen ,  Chia-Yi Chu ,  Han-Ning Chen ,  Wen-Chi Lin ,  Hui-Chung Chen

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

Abstract: An active stylus pen comprises a touch component and a pressure sensing module. One end of the touch component is disposed at a nib part of the active stylus pen, wherein the touch component is configured to receive an external pressure. The pressure sensing module is connected to the touch component, wherein the pressure sensing module is configured to generate an oscillation signal, wherein the oscillation signal has a first frequency when the touch component receives the external pressure and the external pressure reaches a first threshold value, and wherein the oscillation signal is adjusted to have a second frequency when the touch component receives the external pressure and the external pressure does not reach the first threshold value; wherein a difference of the first frequency and the second frequency is larger than a second threshold value.

公开(公告)号：US10273151B2

公开(公告)日：2019-04-30

申请号：US15828044

申请日：2017-11-30

Applicant: SILICON INTEGRATED SYSTEMS CORP.

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

IPC: B81B7/00 ,  B81B7/02 ,  B81C1/00 ,  G05F3/02 ,  H02M3/07 ,  H03H9/10 ,  G06G7/184 ,  G01N27/414 ,  G01P15/125

Abstract: A sensing device includes a MEMS sensor and an adjustable amplifier. The MEMS sensor is configured to generate an input signal according to environmental changes. The adjustable amplifier has a first input terminal, a second input terminal, a third input terminal, a fourth input terminal and a first output terminal. The first input terminal is electrically connected to the MEMS sensor for receiving the input signal. The second input terminal is electrically connected to a first signal terminal for receiving a first common-mode signal. The third input terminal is electrically connected to the first output terminal. The fourth input terminal is electrically connected to a second signal terminal. An electric potential of a first output signal output by the first output terminal of the adjustable amplifier is related to electric potentials of the input signal, the first signal terminal and the second signal terminal.

公开(公告)号：US10205387B2

公开(公告)日：2019-02-12

申请号：US15838181

申请日：2017-12-11

Applicant: SILICON INTEGRATED SYSTEMS CORP.

Inventor： Wen-Chi Lin ,  Cheng-Ta Wu ,  Keng-Nan Chen

IPC: H02M3/07

Abstract: A charge pump circuit includes N boosting circuits, (N−2) switching circuits and a control circuit. A kth boosting circuit includes a unidirectional component and a capacitor. A positive terminal of the unidirectional component of the kth boosting circuit is electrically connected to a negative terminal of a unidirectional component of a (k−1)th boosting circuit. A first terminal of the capacitor of the kth boosting circuit is electrically connected to a negative terminal of the unidirectional component of the kth boosting circuit. A (2i−1)th switching circuit selectively conducts a current path from a (2i−1)th boosting circuit to a first clock terminal or to a ground terminal according to a control signal of the control circuit. A (2i)th switching circuit selectively conducts a current path from a (2i)th boosting circuit to a second clock terminal or to the ground terminal according to the control signal of the control circuit.

公开(公告)号：US20180166986A1

公开(公告)日：2018-06-14

申请号：US15838181

申请日：2017-12-11

Applicant: SILICON INTEGRATED SYSTEMS CORP.

Inventor： Wen-Chi Lin ,  Cheng-Ta Wu ,  Keng-Nan Chen

IPC: H02M3/07

CPC classification number: H02M3/07 ,  H02M3/073 ,  H02M2003/075

Abstract: A charge pump circuit includes N boosting circuits, (N-2) switching circuits and a control circuit. A kth boosting circuit includes a unidirectional component and a capacitor. A positive terminal of the unidirectional component of the kth boosting circuit is electrically connected to a negative terminal of a unidirectional component of a (k-1)th boosting circuit. A first terminal of the capacitor of the kth boosting circuit is electrically connected to a negative terminal of the unidirectional component of the kth boosting circuit. A (2i-1)th switching circuit selectively conducts a current path from a (2i-1)th boosting circuit to a first clock terminal or to a ground terminal according to a control signal of the control circuit. A (2i)th switching circuit selectively conducts a current path from a (2i)th boosting circuit to a second clock terminal or to the ground terminal according to the control signal of the control circuit.