公开(公告)号：US20170192043A1

公开(公告)日：2017-07-06

申请号：US15246734

申请日：2016-08-25

Applicant: Alpha Networks Inc.

Inventor： Chun-Hsueh CHU ,  Rong-Fa KUO

IPC: G01R27/16 ,  G01R27/04

CPC classification number: G01R27/16 ,  G01R27/04 ,  G01R27/06 ,  G01R27/28

Abstract: A characteristic impedance of an electric transmission line is measured by way of extraction. In the method, a first probe and a second probe are provided, wherein the first probe and the second probe are separable and independently operable probes. A first characteristic impedance of a first circuit where a first terminal of the first probe and a first terminal of the second probe are directly interconnected to each other is first measured. Then a second characteristic impedance of a second circuit where the first terminal of the first probe and the first terminal of the second probe are connected to opposite terminals of the electric transmission line, respectively, is measured. The characteristic impedance of the electric transmission line can then be obtained according to the first characteristic impedance and the second characteristic impedance.

公开(公告)号：US09664732B2

公开(公告)日：2017-05-30

申请号：US14884125

申请日：2015-10-15

Applicant: Alpha Networks Inc.

Inventor： Rong-Fa Kuo

IPC: G01R31/28

CPC classification number: G01R31/2884 ,  G01R31/2818 ,  G01R31/2822

Abstract: In an RF device, an RF circuit includes at least two RF transmitting/receiving elements; and an RF switch controlled to selectively electrically couple to one of the RF transmitting/receiving elements for transmitting/receiving an RF signal in response to a control signal. In addition, a testing circuit includes a first filter unit having a first external terminal electrically coupled to a testing signal and a second external terminal electrically coupled to the RF circuit, wherein the first filter unit is configured to allow the testing signal to enter the RF circuit while blocking an RF signal transmitted in the RF circuit from entering the testing circuit; and a testing-result informing unit having an external input electrically coupled to the first external terminal, and determining contents of the control signal according to an electric level at the external input.

公开(公告)号：US20160226302A1

公开(公告)日：2016-08-04

申请号：US14994855

申请日：2016-01-13

Applicant: Alpha Networks Inc.

Inventor： Wenbin ZHANG

IPC: H02J9/06

Abstract: For efficient redundancy power supplying, a voltage drop device, a power selection device, a voltage detection device and a switch are provided in a power control circuit of a redundancy power supply system. The voltage drop device performs a voltage drop operation to convert a redundancy operating voltage into a standby voltage. The power selection device receives the main operating voltage and the standby voltage, and selectively outputting one of the main operating voltage and the standby voltage, which is of a higher level. The voltage detection device outputs a control signal according to a comparison result of the main operating voltage and a threshold. The switch is selectively conducted or interrupted according to the control signal. A voltage drop of power passing through the conducted switch is less than a voltage drop of power passing through the voltage drop device.

Abstract translation: 为了有效的冗余电力供给，在冗余电力供给系统的功率控制电路中设置有降压装置，电力选择装置，电压检测装置和开关。 电压降装置执行电压降操作，以将冗余工作电压转换成待机电压。 功率选择装置接收主工作电压和待机电压，并且选择性地输出高电平的主工作电压和待机电压之一。 电压检测装置根据主工作电压和阈值的比较结果输出控制信号。 根据控制信号选择性地导通或中断开关。 通过传导开关的电力的电压降小于通过压降装置的电力的电压降。

公开(公告)号：US20160109511A1

公开(公告)日：2016-04-21

申请号：US14884125

申请日：2015-10-15

Applicant: Alpha Networks Inc.

Inventor： Rong- Fa KUO

IPC: G01R31/28

CPC classification number: G01R31/2884 ,  G01R31/2818 ,  G01R31/2822

Abstract: In an RF device, an RF circuit includes at least two RF transmitting/receiving elements; and an RF switch controlled to selectively electrically couple to one of the RF transmitting/receiving elements for transmitting/receiving an RF signal in response to a control signal. In addition, a testing circuit includes a first filter unit having a first external terminal electrically coupled to a testing signal and a second external terminal electrically coupled to the RF circuit, wherein the first filter unit is configured to allow the testing signal to enter the RF circuit while blocking an RF signal transmitted in the RF circuit from entering the testing circuit; and a testing-result informing unit having an external input electrically coupled to the first external terminal, and determining contents of the control signal according to an electric level at the external input.

Abstract translation: 在RF设备中，RF电路包括至少两个RF发射/接收元件; 以及RF开关，其被控制为响应于控制信号选择性地电耦合到RF发射/接收元件中的一个用于发射/接收RF信号。 此外，测试电路包括具有电耦合到测试信号的第一外部端子和电耦合到RF电路的第二外部端子的第一滤波器单元，其中第一滤波器单元被配置为允许测试信号进入RF 同时阻挡RF电路中发射的RF信号进入测试电路; 以及测试结果通知单元，其具有电耦合到所述第一外部端子的外部输入，以及根据所述外部输入端的电平来确定所述控制信号的内容。

公开(公告)号：US20150229253A1

公开(公告)日：2015-08-13

申请号：US14309237

申请日：2014-06-19

Applicant: Alpha Networks Inc.

Inventor： Cheng-Xian LV

IPC: H02P7/00 ,  F04D25/06 ,  F04D27/00 ,  F04D19/00

CPC classification number: F04D27/004 ,  F04D25/0613 ,  H02P7/29

Abstract: The present invention is to provide a fan control circuit, which includes a filter circuit for converting a pulse-width modulation (PWM) voltage signal into a DC voltage signal; an amplifier circuit having an input end for receiving the DC voltage signal and a static voltage signal and generating an amplified voltage signal at an output end thereof; a current expansion circuit configured to perform current expansion on the amplified voltage signal and thereby generate a driving voltage signal for a fan; and a feedback circuit connected between another input end of the amplifier circuit and an output end of the current expansion circuit so that magnitude of the driving voltage signal is in direct proportion to the duty cycle of the PWM voltage signal and is greater than or equal to a lowest driving voltage value of the fan when the duty cycle of the PWM voltage signal approaches zero.

Abstract translation: 本发明提供一种风扇控制电路，其包括用于将脉冲宽度调制（PWM）电压信号转换成直流电压信号的滤波电路; 放大器电路，其具有用于接收直流电压信号的输入端和静态电压信号，并在其输出端产生放大的电压信号; 电流扩展电路，被配置为对放大的电压信号进行电流膨胀，从而生成用于风扇的驱动电压信号; 以及连接在放大器电路的另一输入端和电流扩展电路的输出端之间的反馈电路，使得驱动电压信号的大小与PWM电压信号的占空比成正比，并且大于或等于 当PWM电压信号的占空比接近零时风扇的最低驱动电压值。

公开(公告)号：US20150180925A1

公开(公告)日：2015-06-25

申请号：US14287693

申请日：2014-05-27

Applicant: Alpha Networks Inc.

Inventor： Jin-Fuu Lin

IPC: H04L29/06 ,  H04L29/08

CPC classification number: H04L65/4069 ,  H04W4/80

Abstract: A playing system and a plying method are provided. The playing system is selectively in communication with a portable device. The playing system includes a first playing device and a server. When the portable device is within a first detecting range corresponding to the first playing device, the first playing device is in communication with the portable device and issues a first playing request. The server is in communication with the first playing device for providing a multimedia stream. After the first playing request is received by the server, the multimedia stream is transmitted from the server to the first playing device, so that the multimedia stream is played by the first playing device.

Abstract translation: 提供了一种演奏系统和一种演奏方式。 播放系统选择性地与便携式设备通信。 播放系统包括第一播放设备和服务器。 当便携式设备处于与第一播放设备相对应的第一检测范围内时，第一播放设备与便携式设备通信并发出第一播放请求。 服务器与第一播放设备通信以提供多媒体流。 在由服务器接收到第一播放请求之后，将多媒体流从服务器发送到第一播放设备，使得多媒体流由第一播放设备播放。