专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20120182084A1 POWER SYNTHESIS CIRCUIT FOR RADIO FREQUENCY POWER AMPLIFIER 有权
标题翻译：无线电频率功率放大器的功率合成电路
公开(公告)号：US20120182084A1
公开(公告)日：2012-07-19
申请号：US13498910
申请日：2010-12-16
申请人： Fengxiong Peng , Xuguang Zhang
发明人： Fengxiong Peng , Xuguang Zhang
IPC分类号： H01P5/12
CPC分类号： H03F3/24 , H03F1/52 , H03F1/565 , H03F3/68 , H03F2200/111 , H03F2200/387 , H03F2200/451 , H03H2007/386
摘要： A power synthesis circuit for a radio frequency (RF) power amplifier comprises a first matching network and a second matching network, which are connected with two-band signal output ports of the RF power amplifier respectively, and signal coupling circuits which are connected with two-band signal receiving ports respectively. The first matching network and the second matching network are connected with an antenna circuit via a duplexer, and are grounded via an inductor and a switch element which is connected in parallel to the inductor respectively. The leakage of signal among different channels is prevented. The transmission quality of the RF signal is improved. The cost of the power amplifier is reduced and the structure of the power amplifier is simplified.
摘要翻译：一种用于射频（RF）功率放大器的功率合成电路，包括分别与RF功率放大器的双频带信号输出端口连接的第一匹配网络和第二匹配网络，以及与两个连接的RF信号的信号耦合电路带信号接收端口。第一匹配网络和第二匹配网络通过双工器与天线电路连接，并且经由电感器和分别与电感器并联连接的开关元件接地。防止不同通道之间的信号泄漏。 RF信号的传输质量得到改善。功率放大器的成本降低，功率放大器的结构简化。

2. 发明申请

US20110316543A1 METHOD AND CIRCUITS FOR SHORT-CIRCUIT PROTECTION OF LED SYSTEMS 有权
标题翻译： LED系统短路保护的方法和电路
公开(公告)号：US20110316543A1
公开(公告)日：2011-12-29
申请号：US13005402
申请日：2011-01-12
申请人： Zhengdong Zhang , Jianbo Sun , Li Zhang , Yun Lu , Xuguang Zhang
发明人： Zhengdong Zhang , Jianbo Sun , Li Zhang , Yun Lu , Xuguang Zhang
IPC分类号： G01R31/00
CPC分类号： H05B33/0893 , Y02B20/341
摘要： An embodiment of the present invention relates to a method for detection of short circuit conditions in an LED array having one or more LED strings, each of which includes one or more LED devices. The method includes determining a minimum voltage that is the lowest of voltages associated with cathode terminals of the one or more LED strings. The method also includes determining if said minimum voltage is between a lower limit voltage and an upper voltage limit. If said minimum voltage is between the lower limit voltage and the upper voltage limit, then a result of a short circuit testing can be considered valid. Here, the short circuit testing includes comparing a sampled voltage associated with a cathode voltage of one of the LED strings with a short-circuit reference voltage.
摘要翻译：本发明的实施例涉及一种用于检测具有一个或多个LED串的LED阵列中的短路状况的方法，每个LED串包括一个或多个LED器件。该方法包括确定与一个或多个LED串的阴极端子相关联的最低电压的最小电压。该方法还包括确定所述最小电压是否在下限电压和上限电压之间。如果所述最小电压在下限电压和上限电压之间，则短路测试的结果可以被认为是有效的。这里，短路测试包括将与一个LED串的阴极电压相关联的采样电压与短路参考电压进行比较。

3. 发明授权

US5701094A Logic circuits for wave pipelining 失效
标题翻译：波形流水线逻辑电路
公开(公告)号：US5701094A
公开(公告)日：1997-12-23
申请号：US620466
申请日：1996-03-22
申请人： Ramalingam Sridhar , Xuguang Zhang
发明人： Ramalingam Sridhar , Xuguang Zhang
IPC分类号： G06F7/00 , G06F7/50 , G06F7/508 , G06F7/60 , G06F17/50 , H03K19/0948 , H03K19/173 , H03K19/21 , H03K19/003
CPC分类号： H03K19/215 , G06F17/505 , G06F7/00 , G06F7/508 , G06F7/607 , H03K19/0948 , H03K19/1737 , G06F2207/5063
摘要： A family of CFET logic circuits useful for wave-pipeline systems is described, and a method to design same. The invention uses complementary transmission gates and pull-up or pull-down transistors to achieve a family of CFET logic circuits which include AND, NAND, OR, NOR, XOR, XNOR, select, select-invert, invert, and not-invert functions. Each circuit is tuned to provide substantially equal delays, high-quality ones and zeros, and substantially equal rise and fall times, for every combination of input-state transition and output-state transition.
摘要翻译：描述了一种对波导管道系统有用的CFET逻辑电路系列，并设计了一种方法。本发明使用互补传输门和上拉或下拉晶体管来实现一系列CFET逻辑电路，其包括AND，NAND，OR，NOR，XOR，XNOR，选择，选择反相，反相和不反转功能。每个电路被调谐以为输入状态转换和输出状态转换的每个组合提供基本相等的延迟，高质量的零和零，以及基本相等的上升和下降时间。

4. 发明申请

US20110227503A1 SYSTEM AND METHOD FOR LED BACKLIGHT DRIVER FOR LCD PANELS 审中-公开
标题翻译：用于LCD面板的LED背光驱动器的系统和方法
公开(公告)号：US20110227503A1
公开(公告)日：2011-09-22
申请号：US12766667
申请日：2010-04-23
申请人： ShanShan Yuan , XinFeng Liu , XuGuang Zhang
发明人： ShanShan Yuan , XinFeng Liu , XuGuang Zhang
IPC分类号： H05B41/36
CPC分类号： G09G3/3406 , G09G2320/0233 , H05B33/0827
摘要： A power supply control system for driving light-emitting diode (LED) loads includes a first power switch for coupling to a voltage source, and a plurality of second power switches, each of which is configured for coupling to one of a corresponding plurality of LED loads. Each of the LED loads can include multiple light-emitting diodes (LEDs) connected in series. The power supply control system also includes an integrated circuit controller that includes a voltage controller configured to control the first power switch to provide an output voltage to each of the LED loads, and a current controller configured for coupling to each of the plurality of second power switches to provide a current through each of the LED loads. The integrated circuit controller is provided in a low-voltage integrated circuit chip, and the first power switch and the plurality of second power switches are high-voltage devices external to the low-voltage integrated circuit chip.
摘要翻译：用于驱动发光二极管（LED）负载的电源控制系统包括用于耦合到电压源的第一电源开关和多个第二电源开关，每个第二电源开关被配置为耦合到相应的多个LED 负载每个LED负载可以包括串联连接的多个发光二极管（LED）。电源控制系统还包括集成电路控制器，其包括被配置为控制第一电源开关以向每个LED负载提供输出电压的电压控制器，以及被配置为耦合到多个第二电力中的每一个的电流控制器开关以提供通过每个LED负载的电流。集成电路控制器设置在低电压集成电路芯片中，第一电源开关和多个第二电源开关是低压集成电路芯片外部的高压器件。

5. 发明授权

US08872599B2 Power synthesis circuit for radio frequency power amplifier 有权
标题翻译：射频功率放大器功率合成电路
公开(公告)号：US08872599B2
公开(公告)日：2014-10-28
申请号：US13498910
申请日：2010-12-16
申请人： Fengxiong Peng , Xuguang Zhang
发明人： Fengxiong Peng , Xuguang Zhang
IPC分类号： H03H7/38 , H03F3/24 , H03F1/52 , H03F3/68 , H03F1/56
CPC分类号： H03F3/24 , H03F1/52 , H03F1/565 , H03F3/68 , H03F2200/111 , H03F2200/387 , H03F2200/451 , H03H2007/386
摘要： A power synthesis circuit for a radio frequency (RF) power amplifier comprises a first matching network and a second matching network, which are connected with two-band signal output ports of the RF power amplifier respectively, and signal coupling circuits which are connected with two-band signal receiving ports respectively. The first matching network and the second matching network are connected with an antenna circuit via a duplexer, and are grounded via an inductor and a switch element which is connected in parallel to the inductor respectively. The leakage of signal among different channels is prevented. The transmission quality of the RF signal is improved. The cost of the power amplifier is reduced and the structure of the power amplifier is simplified.
摘要翻译：一种用于射频（RF）功率放大器的功率合成电路，包括分别与RF功率放大器的双频带信号输出端口连接的第一匹配网络和第二匹配网络，以及与两个连接的RF信号的信号耦合电路带信号接收端口。第一匹配网络和第二匹配网络通过双工器与天线电路连接，并且经由电感器和分别与电感器并联连接的开关元件接地。防止不同通道之间的信号泄漏。 RF信号的传输质量得到改善。功率放大器的成本降低，功率放大器的结构简化。

6. 发明授权

US08593149B2 Method and circuits for short-circuit protection of LED systems 有权
标题翻译： LED系统短路保护方法和电路
公开(公告)号：US08593149B2
公开(公告)日：2013-11-26
申请号：US13005402
申请日：2011-01-12
申请人： Zhengdong Zhang , Jianbo Sun , Li Zhang , Yun Lu , Xuguang Zhang
发明人： Zhengdong Zhang , Jianbo Sun , Li Zhang , Yun Lu , Xuguang Zhang
IPC分类号： G01R31/00
CPC分类号： H05B33/0893 , Y02B20/341
摘要： An embodiment of the present invention relates to a method for detection of short circuit conditions in an LED array having one or more LED strings, each of which includes one or more LED devices. The method includes determining a minimum voltage that is the lowest of voltages associated with cathode terminals of the one or more LED strings. The method also includes determining if said minimum voltage is between a lower limit voltage and an upper voltage limit. If said minimum voltage is between the lower limit voltage and the upper voltage limit, then a result of a short circuit testing can be considered valid. Here, the short circuit testing includes comparing a sampled voltage associated with a cathode voltage of one of the LED strings with a short-circuit reference voltage.
摘要翻译：本发明的实施例涉及一种用于检测具有一个或多个LED串的LED阵列中的短路状况的方法，每个LED串包括一个或多个LED器件。该方法包括确定与一个或多个LED串的阴极端子相关联的最低电压的最小电压。该方法还包括确定所述最小电压是否在下限电压和上限电压之间。如果所述最小电压在下限电压和上限电压之间，则短路测试的结果可以被认为是有效的。这里，短路测试包括将与一个LED串的阴极电压相关联的采样电压与短路参考电压进行比较。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式