公开(公告)号：US20220303385A1

公开(公告)日：2022-09-22

申请号：US17692182

申请日：2022-03-11

Applicant: PROLIFIC TECHNOLOGY INC.

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

IPC: H04M1/72409 ,  H04W4/48

Abstract: An in-vehicle entertainment system having functionality of operation interface switchable is disclosed. The system comprises an in-vehicle host electronic device and a hub having a host-to-host transmission function. After at least two mobile electronic devices are coupled to the hub, the in-vehicle host electronic device firstly prioritizes a communication order between the two mobile electronic devices, and then lets a display unit show an operation interface (like CarPlay operation interface) corresponding to the mobile electronic device that is prioritized with a first ranked communication order. Moreover, in case of a peripheral electronic device being coupled to the hub as well as the display unit being showing the operation interface, the in-vehicle host electronic device is allowed to access a peripheral electronic device through the hub.

公开(公告)号：US11221605B2

公开(公告)日：2022-01-11

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 ,  F04D25/08 ,  G05D13/62

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：US11118591B2

公开(公告)日：2021-09-14

申请号：US16796116

申请日：2020-02-20

Applicant: PROLIFIC TECHNOLOGY INC.

Inventor： Chia Chang Hsu ,  Chih Feng Huang ,  Ching Te Chen ,  Ren Yuan Yu

IPC: F04D25/06 ,  F04D27/00 ,  F04D19/00

Abstract: An intelligent fan with interface compatibility is provided. The intelligent fan includes a fan body having a fan and a motor, a driving circuit, a tachometer, an output connector including a first pin, a second pin, a third pin and a fourth pin connected to a fan connector of a motherboard, and a microcontroller connected to the driving circuit and the tachometer, and connected to the motherboard via the first, second, third and fourth pins. When the intelligent fan is powered on, the microcontroller sets the third and fourth pins as input pins for receiving an output signal of the fan connector of the motherboard, and the microcontroller performs an I2C signal analysis on the output signal. When the I2C signal analysis succeeds, the intelligent fan is set in an I2C mode, and when the I2C signal analysis fails, the intelligent fan is set in a PWM mode.

公开(公告)号：US20210019274A1

公开(公告)日：2021-01-21

申请号：US17039850

申请日：2020-09-30

Applicant: PROLIFIC TECHNOLOGY INC.

Inventor： Tien-Wei YU ,  Cheng-Sheng CHAN ,  Chiun-Shiu CHEN

IPC: G06F13/40 ,  G06F13/42

Abstract: A USB bridge including a first USB port, a second USB port, a microcontroller, and a host-to-host function circuit is provided. The first USB port is coupled to the first USB host. The second USB port is coupled to the second USB host. The microcontroller is coupled to the first and the second USB ports. The microcontroller communicates with the first and the second USB hosts via the first and the second USB ports, such that the first and the second USB hosts respectively simulate the USB ports of the first and the second USB hosts as virtual COM ports. The host-to-host function circuit is coupled to the microcontroller and configured to perform a host-to-host transmission function by simulating the USB ports as virtual COM ports.

公开(公告)号：US10725521B2

公开(公告)日：2020-07-28

申请号：US16182742

申请日：2018-11-07

Applicant: PROLIFIC TECHNOLOGY INC.

Inventor： Chia-Chang Hsu

IPC: G06F1/32 ,  G06F1/3206 ,  G01R19/165 ,  G01K1/14 ,  G01K3/00 ,  H02H1/00

Abstract: The invention discloses a power saving device capable of automatically sensing standby current, which is used in a power device such as a power outlet or other power supply devices for giving the power device ability of electricity saving. When the power saving device normally works, a threshold current setting unit of a controlling and processing module is configured to automatically calculate a threshold current based on current signals sensed by a current detecting unit under different operation modes of at least one electrical device electrically connected to the power device. Moreover, when at least one standby current sensed from the electrical device is determined to be lower than the threshold current, the controlling and processing module immediately switches a switch unit to an open-circuit state, thereby causing the electrical device unable to receive electricity from the power device. Consequently, the power device exhibits the ability of power saving.

公开(公告)号：US10372652B2

公开(公告)日：2019-08-06

申请号：US16002625

申请日：2018-06-07

Applicant: PROLIFIC TECHNOLOGY INC.

Inventor： Tien-Wei Yu ,  Cheng-Sheng Chan ,  Chun-Hsu Chen ,  Ren-Jie Duan

IPC: G06F13/40 ,  G06F13/42

Abstract: A USB hub includes an upstream port; a first USB device control unit for performing packet format conversion; an FIFO circuit for storing data outputted from the first host; a second USB device control unit for performing packet format conversion; and a plurality of downstream ports. When any one of the downstream ports is coupled to the mobile device, if the first host commands the mobile device to switch to a host role from a device role, the mobile device temporarily disconnects from the USB hub, and the first host commands the USB hub to change an internal routing path. After the mobile device switches to the host role, the first host still performs the host role, and the first USB device control unit performs the device role; the mobile device performs the host role, and the second USB device control unit performs the device role.

公开(公告)号：US10338652B2

公开(公告)日：2019-07-02

申请号：US15131025

申请日：2016-04-17

Applicant: Prolific Technology Inc.

Inventor： Wan-Yang Chen ,  Chih-Shih Yang ,  Jia-Jun Liu

IPC: G06F1/26 ,  G06F1/28 ,  H03K7/08

Abstract: A high voltage protection system includes a high voltage processing circuit, a pulse width modulation signal outputting circuit, a driving circuit, and a coil module. The high voltage processing circuit is used for receiving and processing a high voltage. The pulse width modulation signal output circuit is coupled to the high voltage processing circuit for generating a pulse width modulation signal. The driving circuit is coupled to the pulse width modulation signal outputting circuit for receiving the pulse width modulation signal and generating a driving voltage accordingly. The coil module is coupled to the driving circuit and is operated according to the driving voltage.

公开(公告)号：US09859837B2

公开(公告)日：2018-01-02

申请号：US15367151

申请日：2016-12-01

Applicant: Prolific Technology Inc.

Inventor： Chih-Shih Yang ,  Jia-Jun Liu ,  Wan-Yang Chen

IPC: H02P29/024 ,  H02P29/032

CPC classification number: H02P29/024 ,  H02P29/0241 ,  H02P29/032

Abstract: A negative voltage protection system includes a negative voltage comparison circuit, a signal processing circuit, a driving circuit, a driving output circuit, a power device, and a coil module. When the coil module generates a back electromotive force, the coil module outputs a negative voltage. When an intensity of the negative voltage detected by the negative voltage comparison circuit is greater than a predetermined value, the signal processing circuit generates a control signal to the driving circuit. The driving circuit controls the driving output circuit and the power device to reduce the intensity of the negative voltage according to the control signal.

公开(公告)号：US09588189B2

公开(公告)日：2017-03-07

申请号：US14166929

申请日：2014-01-29

Applicant: PROLIFIC TECHNOLOGY INC.

Inventor： Chih-Shiun Lu

IPC: G01R33/00 ,  G01R33/04 ,  G01R33/06 ,  G01R33/18

CPC classification number: G01R33/0017 ,  G01R33/04 ,  G01R33/063 ,  G01R33/18

Abstract: A system of detecting magnetic field comprises a magnetic impedance element surrounded by a detection coil, a stimulus unit that generates pulse signal of programmable rise/fall time to drive the magnetic impedance element, and a signal detection module that detects signal on the detection coil, wherein the signal detection module includes a buffer unit having adjustable bandwidth for shaping output signal of the detection coil, a signal amplify unit that includes a sample and hold circuit and a chopping programmable gain amplifier to amplify buffered signal from the buffer unit, a signal processing unit that processes amplified signal from the signal amplify unit by applying a selectable algorithm to output detection result, and a control unit that connects the signal processing unit to generate control parameters of the stimulus unit, the buffer unit, the signal amplify unit, and the signal processing unit.

Abstract translation: 检测磁场的系统包括由检测线圈包围的磁阻抗元件，产生可编程上升/下降时间的脉冲信号以驱动磁阻抗元件的刺激单元，以及检测检测线圈上的信号的信号检测模块， 其中，所述信号检测模块包括具有用于整形所述检测线圈的输出信号的可调节带宽的缓冲单元，包括采样保持电路的信号放大单元和用于放大来自所述缓冲单元的缓冲信号的斩波可编程增益放大器，信号处理 通过应用可选择的算法来输出检测结果来处理来自信号放大单元的放大信号的单元，以及连接信号处理单元以产生刺激单元，缓冲单元，信号放大单元和 信号处理单元。

公开(公告)号：US09069572B2

公开(公告)日：2015-06-30

申请号：US13560161

申请日：2012-07-27

Applicant: Chun-Yi Wang ,  Terrill M. Moore

Inventor： Chun-Yi Wang ,  Terrill M. Moore

IPC: G06F3/00 ,  G06F9/44 ,  G06F9/46 ,  G06F13/00

CPC classification number: G06F9/4413

Abstract: Embodiments efficiently replace an inbox driver of a computer with a third party driver. The inbox and third party drivers are function drivers configured to service an external device connected to the computer. A Function Loader driver is installed within the computer to enable replacement of the inbox function driver with the third party function driver based on a highest ranking of matching criteria. The Function Loader driver cooperates with a Function Loader Child driver, which intercepts a packet exchange that pertains to the external device to determine whether specified rules for replacement are satisfied. If so, the Function Loader Child driver modifies content of the packet exchange to uniquely identify the third party function driver as having the highest ranking of matching criteria. Accordingly, the operating system recognizes the third party function driver as a preferred driver for servicing the external device and installs the third party driver.

Abstract translation: 实施例有效地用第三方驱动器替换计算机的收件箱驱动程序。 收件箱和第三方驱动程序是配置为服务连接到计算机的外部设备的功能驱动程序。 功能装载程序驱动程序安装在计算机内，以使第三方功能驱动程序基于匹配标准的最高排名替换收件箱功能驱动程序。 Function Loader驱动程序与Function Loader Child驱动程序协同工作，该驱动程序拦截与外部设备相关的数据包交换，以确定是否满足指定的替换规则。 如果是这样，则功能加载程序子驱动程序会修改数据包交换的内容，以唯一标识第三方功能驱动程序具有最高排名的匹配标准。 因此，操作系统将第三方功能驱动器识别为服务外部设备并安装第三方驱动程序的首选驱动程序。