公开(公告)号：US20140049248A1

公开(公告)日：2014-02-20

申请号：US13910134

申请日：2013-06-05

Applicant: Prolific Technology Inc.

Inventor： Chih-Shiun Lu ,  Chia-Chang Hsu ,  Ching-Tan Lin

IPC: G01R19/00

CPC classification number: G01R19/00 ,  G01R19/16585 ,  G01R29/027

Abstract: A spark detection device includes a sensing element and a comparing element. The sensing element is for sensing a spark signal to generate a sensing signal. A first end of the comparing element is coupled to the sensing element, and a second end of the comparing element is for receiving a threshold signal. The comparing element is for generating an output signal at an output end of the comparing element by performing a comparing operation according to the sensing signal and the threshold signal.

Abstract translation: 火花检测装置包括感测元件和比较元件。 感测元件用于感测火花信号以产生感测信号。 比较元件的第一端耦合到感测元件，并且比较元件的第二端用于接收阈值信号。 比较元件用于通过根据感测信号和阈值信号进行比较操作，在比较元件的输出端产生输出信号。

公开(公告)号：US20030034747A1

公开(公告)日：2003-02-20

申请号：US09930148

申请日：2001-08-16

Applicant: PROLIFIC TECHNOLOGY INC.

Inventor： Chia-Chang Hsu ,  Chih-Shih Yang

IPC: H02P001/18 ,  H02P003/08 ,  H02P005/06 ,  H02P007/06 ,  H02K023/00

CPC classification number: H02P6/16 ,  H02P6/30

Abstract: A method for driving a brushless DC motor is disclosed in accordance with the present invention. Firstly, a driving control signal is generated based on sensed information of a motor rotor's magnetic field distribution. The driving control signal is inactive in the case that four rotor magnetic arcs are rotated more or less than critical positions of the rotor corresponding a stator. At that time, no magnetic fields are produced from the motor's stator, and thus the rotor rotates by inertial force. In another case, the driving control signal is issued in a conventional manner.

Abstract translation: 根据本发明公开了一种用于驱动无刷直流电动机的方法。 首先，基于电机转子的磁场分布的感测信息生成驱动控制信号。 在四个转子磁场转动或多或少地转动对应于定子的转子的情况下，驱动控制信号是无效的。 此时，电动机的定子不产生磁场，因此转子通过惯性力旋转。 在另一种情况下，以常规方式发出驱动控制信号。

公开(公告)号：US12225152B2

公开(公告)日：2025-02-11

申请号：US17704571

申请日：2022-03-25

Applicant: PROLIFIC TECHNOLOGY INC.

Inventor： Ting-Ta Chien ,  Hsing-Yun Hsieh ,  Ren-Yuan Yu

IPC: H04M1/724 ,  H04M1/72409

Abstract: A system for achieving display of CarPlay operation interface on display screens of multiple electronic devices is disclosed. The system comprises a first electronic device and a second electronic device, wherein the first electronic device has functionality of Apple CarPlay because of including an Apple Mfi authentication chip. Particularly, a CarPlay executor comprising a principal execution unit and a plurality of sub-execution units is provided in the first electronic device. As such, after a second mobile electronic device is in communication with a second electronic device that is coupled to the first electronic device, one sub-execution unit is authorized by the Apple Mfi authentication chip so as to let a CarPlay operation interface be shown on a display screen of the second electronic device, thereby achieving display of CarPlay operation interface on display screens of multiple electronic devices.

公开(公告)号：US20250028666A1

公开(公告)日：2025-01-23

申请号：US18672182

申请日：2024-05-23

Applicant: PROLIFIC TECHNOLOGY INC.

Inventor： TIEN-WEI YU ,  CHUN-SHIU CHEN

IPC: G06F13/38 ,  G06F13/40

Abstract: A device capable of directly diverting data through UART port is disclosed. The device can be made to be an integrated circuit (IC) chip, so as to be disposed on a circuit board with a USB connector and three UART connectors, thereby forming a USB to UART converter. When using the USB to UART converter, the USB connector is connected to a host computer, and one UART connector is connected to an electronic device. As such, the device provides the host computer with one virtual COM port, such that the host computer is able to conduct a data transmission with the electronic device through the virtual COM port. Moreover, during the data transmission, a data monitoring electronic device is able to hear the transmitted data by way of diverting the transmitted data through the other two UART connectors.

公开(公告)号：US11216401B2

公开(公告)日：2022-01-04

申请号：US16866705

申请日：2020-05-05

Applicant: PROLIFIC TECHNOLOGY INC.

Inventor： Tien-Wei Yu ,  Cheng-Sheng Chan ,  Chiun-Shiu Chen

IPC: G06F13/38 ,  G06F13/42 ,  G06F13/28 ,  G06F13/40

Abstract: A host-to-host chip includes: first and second ports coupled to first and second hosts respectively; and a host-to-host control circuit coupled to the first port and the second port. When the host-to-host chip is coupled to the second host, the host-to-host control circuit identifies whether the second host is an i-Phone or an Android smartphone. If the host-to-host control circuit identifies that the second host is an i-Phone smartphone, in response to a command from the host-to-host control circuit, the second host switches to host role from device role, and the host-to-host control circuit controls whether data is transmitted between the first host and the second host via a DMA path. If the host-to-host control circuit identifies that the second host is an Android smartphone, the host-to-host control circuit determines that data is transmitted between the first host and the second host in a pass-through mode.

公开(公告)号：US20200264575A1

公开(公告)日：2020-08-20

申请号：US16796072

申请日：2020-02-20

Applicant: PROLIFIC TECHNOLOGY INC.

Inventor： Chia Chang HSU ,  Chih Feng HUANG ,  Ching-Te CHEN ,  Ren-Yuan YU

IPC: G05B19/042

Abstract: An intelligent fan control system with interface compatibility is provided. The intelligent fan control system can identify and control fans one-to-one connected to fan slots, and each fan slot includes four pins. The intelligent fan control system includes a bus; an I2C signal switching unit including SDA outputs one-to-one connected to third pin of the fan slots via the bus; an I2C signal switching unit including SCL outputs one-to-one connected to fourth pins of the fan slots via the bus; voltage control units one-to-one corresponding to the fan slots, and having output terminals one-to-one connected to second pins of the fan slots; connection line sets, and each connection line set including four connection lines and connected to the corresponding fan slot; a control board comprising port sets, and can control and switch the I2C signal switching unit to the fan slots in sequence, to transmit the corresponding I2C signal.

公开(公告)号：US20200227216A1

公开(公告)日：2020-07-16

申请号：US16737911

申请日：2020-01-09

Applicant: PROLIFIC TECHNOLOGY INC.

Inventor： Chia-Chang Hsu

IPC: H01H9/56 ,  H01H47/18 ,  H01H47/32 ,  H01H47/22 ,  G01R31/327

Abstract: Disclosures of the present invention describe a switch device has a controlling and processing unit comprising a first zero point detector, a second zero point detector, an arc detector, and a microcontroller. According to zero crossing point of input voltage signal, zero crossing point of output voltage signal, relay's delay time, and arc-spark-induced signal, the microcontroller is capable of adaptively generating a relay controlling signal to control the relay, such that the relay achieves a short-circuit switching at the zero cross point of output voltage signal for making the output voltage signal be transmitted to at least one load device. Moreover, the microcontroller is also able to control the relay to finish a short-circuit switching at the zero cross point of input voltage signal, so as to stop the output voltage signal from being transmitted to the load device.

公开(公告)号：US20200218681A1

公开(公告)日：2020-07-09

申请号：US16825486

申请日：2020-03-20

Applicant: PROLIFIC TECHNOLOGY INC.

Inventor： TIEN-WEI YU ,  CHUN-SHIU CHEN

IPC: G06F13/38 ,  G06F13/42

Abstract: The present invention provides a method for automatically identifying host operating system. By applying the method of automatically identifying host operating system in a USB control unit of a USB device by a form of application program, library, variables, and/or operands, the USB control unit is therefore provided with a host operating system identifying function. As such, in case of a specific OS of a host device applying a USB enumeration to the forgoing USB device, the central processing unit would automatically identify (or detect) what the specific OS is. For example, the specific OS is identified as an Apple iOS operating system, a Microsoft Windows operating system, an Apple Mac OS operating system, or a Google Android operating system.

公开(公告)号：US10601466B2

公开(公告)日：2020-03-24

申请号：US15468480

申请日：2017-03-24

Applicant: Prolific Technology INC.

Inventor： Yun-Guo Li ,  Ke-Qiang Shen ,  Yen-Zhi Lin ,  Jia-Zhang Xu

IPC: G08B13/12 ,  H04B3/54 ,  H04B3/46

Abstract: A sensor for sensing a usage status of an electrical device and its associated method are disclosed. The sensor is disposed at a near-end of a power line of the electrical device. The sensor provided with a magnetic detector, an analog-to-digital converter and a controller. The magnetic detector is close to the power line to detect a magnetic field change around the power line to correspondingly generate an analog signal. The analog-to-digital converter (ADC) is used to receive the analog signal and convert the analog signal to a digital signal. The controller is used to receive the digital signal and generate an indication signal to accordingly learn at least one of statuses of being turned on and turned off the electrical device.

公开(公告)号：US10132878B2

公开(公告)日：2018-11-20

申请号：US15261114

申请日：2016-09-09

Applicant: PROLIFIC TECHNOLOGY INC.

Inventor： Hung-Ta Li ,  Po-Feng Lee

IPC: G01R33/06 ,  G01R27/26 ,  G01R33/00

Abstract: An electromagnetic impedance sensing device includes a substrate, a first patterned conductive layer, a second patterned conductive layer, a magneto-conductive wire and an encapsulation layer. The substrate has a surface and a trench extending into thereof. The first patterned conductive layer is formed on the surface, as well as a bottom and sidewalls of the trench. The magneto-conductive wire is disposed in the trench. The second patterned conductive layer extending across the trench and electrically in contact with the first patterned conductive layer is formed on the first patterned conductive layer to make the magneto-conductive wire sandwiched between the first and the second patterned conductive layers. The magneto-conductive wire is encapsulated by the encapsulation layer to make the magneto-conductive wire electrically isolated from the first and second patterned conductive layers. At least one coil circuit surrounding the magneto-conductive wire is formed by the first and second patterned conductive layers.