公开(公告)号：US11323299B2

公开(公告)日：2022-05-03

申请号：US17337351

申请日：2021-06-02

Applicant: Richtek Technology Corporation

Inventor： Hung-Chi Huang ,  Fu-Chi Lin ,  Tsung-Nan Wu ,  Mei-Shu Wang

IPC: H04L27/06 ,  H04L27/156 ,  H04L1/00

Abstract: A communication signal demodulation apparatus demodulates a communication signal to generate an output signal. The communication signal demodulation apparatus includes: plural sensor circuits which sense different electrical characteristics of one same communication signal and generate corresponding sensing modulation signals respectively; plural processing filters which filter the corresponding sensing modulation signals respectively and generate corresponding filtered modulation signals respectively; plural demodulators which demodulate the plural filtered modulation signals and generate corresponding demodulation signals respectively, wherein each of the filtered modulation signals corresponds to at least one of the demodulators; and a determination circuit which receive the plural demodulation signals, determine whether each unit signal of each of the demodulation signals is correct or not according to a determination mechanism, and combine one or more correct unit signals to generate the output signal.

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.