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    • 1. 发明授权
    • Systems and methods for controlling audible speech distortion in a GPS-based CDMA wireless network using ATM transport
    • 用于在基于GPS的CDMA无线网络中使用ATM传输来控制语音失真的系统和方法
    • US06898212B1
    • 2005-05-24
    • US09713778
    • 2000-11-14
    • Dexter ChunManoj DeshpandeSteve HicksBob KnightKC LeeRavi PalakodetyRamesh RamaswamyGustavo SerenaDave WalkerJun Zhang
    • Dexter ChunManoj DeshpandeSteve HicksBob KnightKC LeeRavi PalakodetyRamesh RamaswamyGustavo SerenaDave WalkerJun Zhang
    • H04B7/26H04J3/06
    • H04B7/2628
    • A Base Station Controller (BSC) that reduces the occurrence of audible noise in a Code Division Multiple Access (CDMA) radio network is provided. The BSC according to one embodiment of the present invention comprises a Media Stream Board (MSB) for compressing groups of 160 PCM speech samples from a Public Switch Telephone Network (PSTN) into vocoded frames, and a Special Purpose Board (SPB) for reformatting the vocoded frames from the MSB into over-the-air CDMA vocoded frames. The MSB and SPB each have a local timer that is slave to “PSTN time”. The BSC further comprises a Timing Unit Board (TUB) connected to a GPS receiver. The TUB receives “GPS time” from the GPS receiver. The TUB generates timing cells, each containing time-of-day information according to “GPS time”. The TUB distributes the timing cells to the MSB and the SPB over an Asynchronous Transfer Mode (ATM) network. The MSB and SPB use the received timing cells to compare their local timer, which tracks “PSTN time”, to “GPS time”. The MSB and the SPB realign their local timer with “GPS time” whenever their local timer drifts from “GPS time” outside of a predetermined time window.
    • 提供了一种在码分多址(CDMA)无线电网络中减少可听噪声的发生的基站控制器(BSC)。 根据本发明的一个实施例的BSC包括用于将来自公共交换电话网(PSTN)的160个PCM语音样本的组压缩为声码帧的媒体流板(MSB),以及专用板(SPB),用于重新格式化 从MSB到无线CDMA语音码帧的声码帧。 MSB和SPB每个都有一个本地定时器,从站到“PSTN时间”。 BSC还包括连接到GPS接收机的定时单元板(TUB)。 TUB从GPS接收机接收“GPS时间”。 TUB产生定时单元,每个单元包含根据“GPS时间”的日期信息。 TUB通过异步传输模式(ATM)网络将定时单元分配给MSB和SPB。 MSB和SPB使用接收到的定时单元将其“PSTN时间”跟踪的本地定时器与“GPS时间”进行比较。 当本地定时器从预定时间窗口之外的“GPS时间”漂移时,MSB和SPB将其本地定时器重新对准“GPS时间”。
    • 9. 发明授权
    • Sensing circuit
    • 感应电路
    • US09152269B2
    • 2015-10-06
    • US13304373
    • 2011-11-24
    • Jun-Wei ZhangTsung-Jen ChuangShih-Fang WongJun ZhangQi-Long YuYang Xin
    • Jun-Wei ZhangTsung-Jen ChuangShih-Fang WongJun ZhangQi-Long YuYang Xin
    • G01L19/02G01L19/12G01L19/14G06F3/00G06F3/041G06F3/042
    • G06F3/0416G06F3/042
    • A sensing circuit includes a plurality of sensors, a controller, a multiway switch, a linear optocoupler, and a logical control unit. The plurality of sensors are capable of measuring physical quantity, and each of the plurality of sensors is capable of generating a sensing signal in accordance with the physical quantity. The controller is capable of receiving and analyzing the sensing signals, and transforming the sensing signals into sensing events. The multiway switch is capable of selectively connecting one of the plurality of sensors to the controller. The linear optocoupler is connected between the plurality of sensors and the controller. The logical control unit is capable of controlling the multiway switch to selectively connect one of the plurality of sensors to the optocoupler, and generating a control signal to the controller, wherein the control signal indicating the one of the plurality of sensors connected to the controller.
    • 感测电路包括多个传感器,控制器,多路开关,线性光耦合器和逻辑控制单元。 多个传感器能够测量物理量,并且多个传感器中的每一个能够根据物理量产生感测信号。 控制器能够接收和分析感测信号,并将感测信号转换成感测事件。 多路开关能够将多个传感器中的一个选择性地连接到控制器。 线性光耦合器连接在多个传感器和控制器之间。 逻辑控制单元能够控制多路开关以选择性地将多个传感器中的一个连接到光耦合器,并且向控制器产生控制信号,其中指示连接到控制器的多个传感器中的一个传感器的控制信号。
    • 10. 发明授权
    • Solid-state lighting apparatus and methods using energy storage with segment control
    • 使用节能控制的固态照明装置和方法
    • US09131571B2
    • 2015-09-08
    • US13616368
    • 2012-09-14
    • Jun ZhangLiqin Ni
    • Jun ZhangLiqin Ni
    • H05B37/00H05B33/08
    • H05B33/0824H05B33/083
    • A lighting apparatus includes a rectifier circuit configured to be coupled to an AC source and to produce a rectified voltage from an AC voltage and a string including at least two serially-connected LED segments and coupled to the rectifier circuit. A segment control circuit is configured to selectively bypass at least one segment of the string responsive to the rectified voltage. An energy storage circuit is coupled to the rectifier circuit and controls current flow between at least one energy storage device and the string. A control circuit controls the segment control circuit and the energy storage circuit. The segment control circuit may support a current from the rectifier circuit through all of the segments in the string circuit at a peak of the rectified voltage and the energy storage circuit may charge the at least one energy storage device to a voltage near the peak of the rectified voltage.
    • 照明装置包括整流电路,其被配置为耦合到AC源并且从AC电压和包括至少两个串联连接的LED段的串产生整流电压并且耦合到整流器电路。 段控制电路被配置为响应于整流电压选择性地旁路串的至少一个段。 能量存储电路耦合到整流器电路并且控制至少一个能量存储装置与串之间的电流。 控制电路控制分段控制电路和能量存储电路。 分段控制电路可以支持来自整流电路的电流通过整流电压的峰值处的串电路中的所有段,并且能量存储电路可以将至少一个能量存储装置充电到接近峰值的电压 整流电压。