公开(公告)号：US10915122B2

公开(公告)日：2021-02-09

申请号：US16458290

申请日：2019-07-01

Applicant: PixArt Imaging Inc.

Inventor： Kok-Siang Tan ,  Wai-Lian Teo

IPC: G05F1/565 ,  G05F3/30 ,  G05F1/46 ,  G05F1/10

Abstract: A bandgap reference circuit including a clamp circuit is provided. The bandgap reference circuit performs the calibration only for one time in a normal mode to store a control code of a reference generator of the clamp circuit. In a suspend mode, the control code is used for controlling the reference generator to cause the clamp circuit to provide a desired source voltage, and a bandgap reference voltage source is shut down to reduce the power consumption.

公开(公告)号：US10386875B2

公开(公告)日：2019-08-20

申请号：US15726863

申请日：2017-10-06

Applicant: PixArt Imaging Inc.

Inventor： Kok-Siang Tan ,  Wai-Lian Teo

IPC: G05F1/565 ,  H03G1/00 ,  G05F1/10 ,  G05F3/30 ,  G05F1/46

Abstract: A bandgap reference circuit including a clamp circuit is provided. The bandgap reference circuit performs the calibration only for one time in a normal mode to store a control code of a reference generator of the clamp circuit. In a suspend mode, the control code is used for controlling the reference generator to cause the clamp circuit to provide a desired source voltage, and a bandgap reference voltage source is shut down to reduce the power consumption.

公开(公告)号：US10296027B2

公开(公告)日：2019-05-21

申请号：US15956190

申请日：2018-04-18

Applicant: PixArt Imaging Inc.

Inventor： Kok-Siang Tan

IPC: G05F1/46

Abstract: A bandgap reference circuit including a clamp circuit is provided. The bandgap reference circuit performs the calibration only for one time in a normal mode to store a control code of a reference generator of the clamp circuit. In a suspend mode, the control code is used for controlling the reference generator to cause the clamp circuit to provide a desired source voltage, and a bandgap reference voltage source is shut down to reduce the power consumption.

公开(公告)号：US10481624B2

公开(公告)日：2019-11-19

申请号：US16377297

申请日：2019-04-08

Applicant: PixArt Imaging Inc.

Inventor： Kok-Siang Tan

IPC: G05F1/46

Abstract: A bandgap reference circuit including a clamp circuit is provided. The bandgap reference circuit performs the calibration only for one time in a normal mode to store a control code of a reference generator of the clamp circuit. In a suspend mode, the control code is used for controlling the reference generator to cause the clamp circuit to provide a desired source voltage, and a bandgap reference voltage source is shut down to reduce the power consumption.

公开(公告)号：US10831321B2

公开(公告)日：2020-11-10

申请号：US15957726

申请日：2018-04-19

Applicant: PixArt Imaging Inc.

Inventor： Kok-Siang Tan ,  Yu-Han Chen ,  Meng-Lin Yu ,  Kei-Tee Tiew

IPC: G06F3/044

Abstract: There is provided a parallel sensing touch control device including a capacitive sensor array processed by differential unit. In one detection interval, the device is concurrently conducting more than one sensing electrode of the capacitive sensor array so as to reduce a scanning interval of the capacitive sensor array. The differential unit performs a differential operation on detected signals to cancel out common mode noise.