公开(公告)号：US20170108916A1

公开(公告)日：2017-04-20

申请号：US14885257

申请日：2015-10-16

Applicant: RICHTEK TECHNOLOGY CORPORATION

Inventor： Hung-Chi Huang ,  Ying-Che Lo ,  Chih-Hsien Wang ,  Chih-Yi Hsiao ,  Lupu Liao

IPC: G06F1/32 ,  H04W52/02

CPC classification number: G06F1/3296 ,  G06F1/3206 ,  G06F1/325 ,  G06F1/3287 ,  H04W52/0251 ,  H04W52/0254 ,  Y02D10/171 ,  Y02D10/172 ,  Y02D70/00

Abstract: The present invention discloses an event detection method for waking up a portable electronic device and an action sensor using same. The event detection method includes the steps of: under a normal operation mode, sensing action events by the action sensor with a first data sensing frequency, wherein the action sensor operates by a normal current to detect the action events; entering into a sleep mode; under the sleep mode, detecting a wake-up event by the action sensor with a second data sensing frequency, wherein the action sensor operates by a weak current to detect the wake-up event, wherein the weak current is smaller than the normal current, and the second data sensing frequency is not higher than the first data sensing frequency; and returning to the normal operation mode when the wake-up event is detected.

公开(公告)号：US09684368B2

公开(公告)日：2017-06-20

申请号：US14885257

申请日：2015-10-16

Applicant: RICHTEK TECHNOLOGY CORPORATION

Inventor： Hung-Chi Huang ,  Ying-Che Lo ,  Chih-Hsien Wang ,  Chih-Yi Hsiao ,  Lupu Liao

IPC: G06F1/32 ,  H04W52/02

CPC classification number: G06F1/3296 ,  G06F1/3206 ,  G06F1/325 ,  G06F1/3287 ,  H04W52/0251 ,  H04W52/0254 ,  Y02D10/171 ,  Y02D10/172 ,  Y02D70/00

Abstract: The present invention discloses an event detection method for waking up a portable electronic device and an action sensor using same. The event detection method includes the steps of: under a normal operation mode, sensing action events by the action sensor with a first data sensing frequency, wherein the action sensor operates by a normal current to detect the action events; entering into a sleep mode; under the sleep mode, detecting a wake-up event by the action sensor with a second data sensing frequency, wherein the action sensor operates by a weak current to detect the wake-up event, wherein the weak current is smaller than the normal current, and the second data sensing frequency is not higher than the first data sensing frequency; and returning to the normal operation mode when the wake-up event is detected.

公开(公告)号：US20160102978A1

公开(公告)日：2016-04-14

申请号：US14880527

申请日：2015-10-12

Applicant: RICHTEK TECHNOLOGY CORPORATION

Inventor： Lupu Liao ,  Chiung-C. Lo ,  Ying-Che Lo

IPC: G01C19/56

CPC classification number: G01C19/5726 ,  G01C19/56

Abstract: A rotation velocity sensor includes a driving unit, a proof mass, a rotation sensing element, a compensating unit, and a rotation sensing unit. The driving unit generates a vibration driving signal and a reference signal. The proof mass is driven by the vibration driving signal to vibrate in a first direction. The rotation sensing element senses a vibration of the proof mass to generate a charge signal which corresponds to a portion of the vibration of the proof mass in a second direction orthogonal to the first direction. The compensating unit generates a compensation signal according to the reference signal. The rotation sensing unit converts the charge signal to a voltage signal or a current signal, and compensates the voltage signal or the current signal according to the compensation signal to cancel a noise in the second direction.

Abstract translation: 旋转速度传感器包括驱动单元，检测质量块，旋转感测元件，补偿单元和旋转感测单元。 驱动单元产生振动驱动信号和参考信号。 检测质量由振动驱动信号驱动，以沿第一方向振动。 旋转检测元件感测证明物质的振动，以产生对应于在与第一方向正交的第二方向上的证明物质的振动的一部分的电荷信号。 补偿单元根据参考信号生成补偿信号。 旋转感测单元将充电信号转换为电压信号或电流信号，并根据补偿信号补偿电压信号或电流信号，以消除第二方向的噪声。