公开(公告)号：US20150008846A1

公开(公告)日：2015-01-08

申请号：US14187339

申请日：2014-02-24

Applicant: Lextar Electronics Corporation

Inventor： Yuan-Ching CHEN ,  Chun-Kuang CHEN

IPC: H04L29/06 ,  H05B37/02

CPC classification number: H05B37/0272 ,  H04L12/282 ,  H04L69/18

Abstract: A light control system includes a wired control device, a wireless control device, a communication module, and light devices. The wired control device includes a first user interface and a first wired communication protocol interface. The wireless control device includes a second user interface and a first wireless communication protocol interface. The communication module includes a second wired communication protocol interface and a second wireless communication protocol interface. Each of the light devices includes a third wired communication protocol interface, and each of the light devices performs data exchange with the third wired communication protocol interface of another one of the light devices by a network cable connected to the third wired communication protocol interface. The first wired communication protocol interface and the first wireless communication protocol interface perform data exchange respectively with the second wired communication protocol interface and the second wireless communication protocol interface.

Abstract translation: 光控制系统包括有线控制装置，无线控制装置，通信模块和照明装置。 有线控制装置包括第一用户接口和第一有线通信协议接口。 无线控制设备包括第二用户接口和第一无线通信协议接口。 通信模块包括第二有线通信协议接口和第二无线通信协议接口。 每个光装置包括第三有线通信协议接口，并且每个光装置通过连接到第三有线通信协议接口的网络电缆与另一个光装置的第三有线通信协议接口进行数据交换。 第一有线通信协议接口和第一无线通信协议接口分别与第二有线通信协议接口和第二无线通信协议接口进行数据交换。

公开(公告)号：US20150102727A1

公开(公告)日：2015-04-16

申请号：US14325232

申请日：2014-07-07

Applicant: LEXTAR ELECTRONICS CORPORATION

Inventor： Chun-Kuang CHEN ,  Po-Shen CHEN

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/0851 ,  H05B33/0854

Abstract: An LED driver circuit includes a first driver, a second driver, a switch, a first detection module, a second detection module and a control module. The first driver provides a first driving current according to a supply voltage. The second driver provides a second driving current according to the supply voltage. The switch is selectively coupled to the first or second driver. An LED emits light according to the first or second driving current. When the switch is coupled to the first driver, the first detection module keeps detecting the first driving current and outputting a first sensing signal. When the switch is coupled to the second driver, the second detection module keeps detecting the second driving current and outputting a second sensing signal. The control module outputs a first or second control signal according to the first or second sensing signal for controlling the switch.

Abstract translation: LED驱动器电路包括第一驱动器，第二驱动器，开关，第一检测模块，第二检测模块和控制模块。 第一驱动器根据电源电压提供第一驱动电流。 第二驱动器根据电源电压提供第二驱动电流。 开关选择性地联接到第一或第二驱动器。 LED根据第一或第二驱动电流发光。 当开关耦合到第一驱动器时，第一检测模块继续检测第一驱动电流并输出第一感测信号。 当开关耦合到第二驱动器时，第二检测模块继续检测第二驱动电流并输出第二感测信号。 控制模块根据用于控制开关的第一或第二感测信号输出第一或第二控制信号。

公开(公告)号：US20150015154A1

公开(公告)日：2015-01-15

申请号：US14161997

申请日：2014-01-23

Applicant: Lextar Electronics Corporation

Inventor： Chun-Kuang CHEN ,  Po-Shen CHEN

IPC: H05B33/08

CPC classification number: H05B33/0809 ,  F21K9/27 ,  F21Y2103/10 ,  F21Y2115/10 ,  H05B33/08 ,  H05B33/0803 ,  H05B37/02 ,  Y02B20/383 ,  Y02B20/386

Abstract: A light-emitting diode (LED) light tube driving circuit includes a LED driver and a rectifier unit. The LED driver is configured for receiving an operating voltage to drive at least one LED. The rectifier unit has a first input/output terminal and a second input/output terminal and is electrically coupled to an external alternating-current power source selectively by the first input/output terminal and the second input/output terminal. The rectifier unit is configured for providing the operating voltage to the LED driver. The rectifier unit further includes a first rectifier diode and a second rectifier diode.

Abstract translation: 发光二极管（LED）灯管驱动电路包括LED驱动器和整流器单元。 LED驱动器被配置为接收操作电压以驱动至少一个LED。 整流单元具有第一输入/输出端子和第二输入/输出端子，并且由第一输入/输出端子和第二输入/输出端子选择性地耦合到外部交流电源。 整流器单元被配置为向LED驱动器提供工作电压。 整流单元还包括第一整流二极管和第二整流二极管。

公开(公告)号：US20150011164A1

公开(公告)日：2015-01-08

申请号：US14172952

申请日：2014-02-05

Applicant: Lextar Electronics Corporation

Inventor： Yuan-Ching CHEN ,  Chun-Kuang CHEN

IPC: H04W4/00 ,  H04W48/16 ,  H04W80/04

CPC classification number: H04W4/80 ,  H04L12/28 ,  H04W48/16 ,  H04W80/04 ,  H04W84/20 ,  H05B33/08 ,  H05B37/02 ,  H05B37/0272

Abstract: A wireless control system and a wireless network expansion method applied thereto are provided. The wireless control system comprises a mobile platform and a plurality of wireless devices capable of switching between a first role and a second role. The wireless network expansion method comprises following steps. A mobile platform is turned on. The mobile platforms scans the wireless devices and links to any wireless device serving the first role and then sends a control command to corresponding wireless device, which accordingly broadcasts the control command. The control command is received by at least one wireless device serving the second role. The wireless devices cyclically switch between the first role and the second role to continuously broadcast the control command to other wireless devices serving the second role, so that all of the wireless devices can finally receive the control command from the mobile platform.

Abstract translation: 提供了一种应用于其的无线控制系统和无线网络扩展方法。 无线控制系统包括能够在第一角色和第二角色之间切换的移动平台和多个无线设备。 无线网络扩展方法包括以下步骤。 移动平台已打开。 移动平台扫描无线设备并链接到服务于第一角色的任何无线设备，然后向对应的无线设备发送控制命令，相应的无线设备相应地广播控制命令。 控制命令由服务于第二角色的至少一个无线设备接收。 无线设备在第一角色和第二角色之间循环地切换以将控制命令连续地广播到服务于第二角色的其他无线设备，使得所有无线设备最终可以从移动平台接收控制命令。

公开(公告)号：US20140346964A1

公开(公告)日：2014-11-27

申请号：US14173823

申请日：2014-02-06

Applicant: Lextar Electronics Corporation

Inventor： Chun-Kuang CHEN ,  Po-Shen CHEN

IPC: H05B33/08

CPC classification number: H05B33/0842 ,  H05B33/0815

Abstract: An application circuit includes a dynamic load circuit and a control circuit. The dynamic load circuit is electrically connected to a light source. The control circuit is electrically connected to the dynamic load circuit and a TRIAC. The control circuit controls the load status of the dynamic load circuit based on output current from the TRIAC, so as to turn on the light source.

Abstract translation: 应用电路包括动态负载电路和控制电路。 动态负载电路电连接到光源。 控制电路与动态负载电路和TRIAC电连接。 控制电路基于来自TRIAC的输出电流来控制动态负载电路的负载状态，以便接通光源。

公开(公告)号：US20140117851A1

公开(公告)日：2014-05-01

申请号：US14038739

申请日：2013-09-26

Applicant: Lextar Electronics Corporation

Inventor： Chun-Kuang CHEN ,  En-Min WU ,  Hui-Ying CHEN

IPC: H05B37/00

CPC classification number: H05B33/0809

Abstract: An illumination system includes a lighting unit, a rectifier circuit, a drive circuit and a time control circuit. The rectifier circuit rectifies an AC power from an external power source to a DC power. The drive circuit is configured for receiving the DC power and generating a first driving current. The control circuit includes a resistive element and an energy storage element. The energy storage element is electrically coupled to the resistive element, and the energy storage element is configured for charging while the external power source is supplying the power to the illumination system and generating a second driving current to the lighting unit. When the external power source turns off, the energy storage element generates a discharging current to the lighting unit with the resistive element to extend the time duration which a bright state of the lighting unit goes to a dark state.

Abstract translation: 照明系统包括照明单元，整流电路，驱动电路和时间控制电路。 整流电路将来自外部电源的AC电力整流至DC电力。 驱动电路被配置为接收DC电力并产生第一驱动电流。 控制电路包括电阻元件和能量存储元件。 能量存储元件电耦合到电阻元件，并且能量存储元件构造成用于充电，同时外部电源向照明系统供电并产生到照明单元的第二驱动电流。 当外部电源关闭时，能量存储元件利用电阻元件产生到照明单元的放电电流，以延长照明单元的明亮状态进入暗态的持续时间。

公开(公告)号：US20140214362A1

公开(公告)日：2014-07-31

申请号：US14055289

申请日：2013-10-16

Applicant: Lextar Electronics Corporation

Inventor： Yuan-Ching CHEN ,  Chun-Kuang CHEN

IPC: G01R31/44

CPC classification number: G01R31/44 ,  H05B33/0869 ,  H05B37/0272

Abstract: A method of detecting a flickering frequency of an ambient light source includes the following steps. First, a light intensity of the light source is sensed in a predetermined time period according to a sampling frequency to obtain a plurality of sample values. Then, the sample values are calculated to obtain a median value. Next, the sample values are binarized according to a result of a comparison between the sample values and the median value to obtain a first sequence. The first sequence is differentiated to obtain a second sequence, and the second sequence includes numbers −1, 0, and 1. Then, a distance between the same numbers in the second sequence is calculated, and the sampling frequency is divided by the distance to obtain the flickering frequency of the ambient light source. A system of detecting a flickering frequency of an ambient light source is also disclosed herein.

Abstract translation: 检测环境光源的闪烁频率的方法包括以下步骤。 首先，根据采样频率在预定时间段内感测光源的光强度，以获得多个样本值。 然后，计算样本值以获得中值。 接下来，根据样本值和中值之间的比较结果对样本值进行二值化，以获得第一序列。 第一序列被区分以获得第二序列，第二序列包括数字-1,0和1.然后，计算第二序列中相同数目之间的距离，并将采样频率除以 获得环境光源的闪烁频率。 本文还公开了一种检测环境光源的闪烁频率的系统。