公开(公告)号：US11261322B2

公开(公告)日：2022-03-01

申请号：US16623711

申请日：2018-04-09

申请人： FORDA ENERGY UK LIMITED ,  Pengfei Zhang

发明人： Pengfei Zhang

IPC分类号： C08L67/02

摘要： Provided are a yaw brake lining and a method of producing the same, which relate to the technical field of macromolecular material. The yaw brake lining is mainly prepared from, by weight, the following ingredients: 40-50 parts of polyethylene terephthalate, 5-10 parts of polybutylene terephthalate, 5-10 parts of polytrimethylene terephthalate, 20-30 parts of glass fiber, 1-3 parts of anti-wear agent, 1-5 parts of lubricant, 1-3 parts of antioxidant and 1-3 parts of coupling agent. It achieves the technical effect that the brake disc is protected from damage due to its direct collision with the metal material during braking, and thus effectively guarantees the braking effect of the yaw brake.

公开(公告)号：US10242383B2

公开(公告)日：2019-03-26

申请号：US13216258

申请日：2011-08-24

申请人： Sanal Sasankan ,  Pengfei Zhang

发明人： Sanal Sasankan ,  Pengfei Zhang

IPC分类号： G06Q30/00 ,  G06Q30/02

摘要： A method of delivering promotional content to a navigation application in a mobile device is provided. Knowledge of user interest inferred from a query and expected future location is used to render an advertisement in the navigation application. The advertisement is selected based on a location associated with a query received at the mobile device. In one design, advertisements are selected and rendered in a product-navigation application in a mobile device, which is used to determine the location of a product-choice. The advertisement for a promoted product is preferably rendered such that it represents the actual physical location of the promoted product in the store.

公开(公告)号：US20120303992A1

公开(公告)日：2012-11-29

申请号：US13574131

申请日：2011-01-21

申请人： Qing Xu ,  Pengfei Zhang ,  Hao Shen

发明人： Qing Xu ,  Pengfei Zhang ,  Hao Shen

IPC分类号： G06F1/32

CPC分类号： G06F1/3203 ,  G06F1/3265 ,  G09G5/003 ,  G09G5/006 ,  G09G5/363 ,  G09G2330/022 ,  G09G2370/22 ,  Y02D10/153

摘要： A display and a power management method thereof are disclosed. The method includes: detecting a state of a Graphic Interface Card (GIC) in the display; turning off power supply to the GIC when the GIC is in a first state; and turning on power supply to the GIC when the GIC is in a second state. The method is capable of reducing power consumption of a display to satisfy environment protection requirements without sacrificing the functionality of the display's GIC.

摘要翻译： 公开了一种显示器及其电源管理方法。 该方法包括：检测显示器中的图形接口卡（GIC）的状态; 当GIC处于第一状态时，关闭GIC的电源; 并且当GIC处于第二状态时，接通GIC的电源。 该方法能够降低显示器的功耗以满足环境保护要求，而不会牺牲显示器GIC的功能。

公开(公告)号：US08010071B2

公开(公告)日：2011-08-30

申请号：US12330473

申请日：2008-12-08

申请人： Pengfei Zhang ,  Caogang Yu

发明人： Pengfei Zhang ,  Caogang Yu

IPC分类号： H04B1/10

CPC分类号： H03G3/344

摘要： A method, system, and apparatus for squelching a signal in telecommunications systems. The apparatus includes a filter, two power detectors, a divider, two comparators, a logic gate, and a gain control block. The apparatus receives an input signal, and the power of the signal is detected. The input signal is also filtered to pass only the noise portion of the signal, and the power of the filtered signal is detected. A ratio between the filtered signal power and the input signal power is determined. A first comparator receives the filtered signal power and a second comparator receives the ratio of the filtered signal power and the input signal power. The logic gate receives the outputs from the first and second comparators. The gain control block receives as inputs the logic gate's output and the input signal to the apparatus. The gain control block may attenuate the input signal based on the logic gate's output. The gain control block generates the output signal of the apparatus.

摘要翻译： 一种用于在电信系统中抑制信号的方法，系统和装置。 该装置包括滤波器，两个功率检测器，分频器，两个比较器，逻辑门和增益控制块。 该装置接收输入信号，并检测信号的功率。 输入信号也被滤波以仅通过信号的噪声部分，并且检测滤波信号的功率。 确定滤波后的信号功率与输入信号功率之间的比率。 第一比较器接收滤波后的信号功率，第二比较器接收滤波后的信号功率与输入信号功率的比值。 逻辑门接收来自第一和第二比较器的输出。 增益控制块作为输入接收逻辑门的输出和到设备的输入信号。 增益控制块可以基于逻辑门的输出衰减输入信号。 增益控制块产生装置的输出信号。

公开(公告)号：US07863974B2

公开(公告)日：2011-01-04

申请号：US12350867

申请日：2009-01-08

申请人： Pengfei Zhang ,  Dawei Guo

发明人： Pengfei Zhang ,  Dawei Guo

IPC分类号： H03D3/00

CPC分类号： H03D3/004

摘要： A method and apparatus for demodulating an input signal in a selectable intermediate frequency system is disclosed. The apparatus includes a front end module, a filter, and a phase lock loop (PLL). The front end module mixes the input signal with an oscillating signal. The filter includes at least one characteristic that is selectable to configure an intermediate frequency. The PLL demodulates an output frequency based on the output of the filter.

摘要翻译： 公开了一种在可选择的中频系统中解调输入信号的方法和装置。 该装置包括前端模块，滤波器和锁相环（PLL）。 前端模块将输入信号与振荡信号混合。 滤波器包括至少一个可选择配置中频的特性。 PLL根据滤波器的输出解调输出频率。

公开(公告)号：US20100141336A1

公开(公告)日：2010-06-10

申请号：US12350867

申请日：2009-01-08

申请人： Pengfei Zhang ,  Dawei Guo

发明人： Pengfei Zhang ,  Dawei Guo

IPC分类号： H03D3/02

CPC分类号： H03D3/004

摘要： A method and apparatus for demodulating an input signal in a selectable intermediate frequency system is disclosed. The apparatus includes a front end module, a filter, and a phase lock loop (PLL). The front end module mixes the input signal with an oscillating signal. The filter includes at least one characteristic that is selectable to configure an intermediate frequency. The PLL demodulates an output frequency based on the output of the filter.

摘要翻译： 公开了一种在可选择的中频系统中解调输入信号的方法和装置。 该装置包括前端模块，滤波器和锁相环（PLL）。 前端模块将输入信号与振荡信号混合。 滤波器包括至少一个可选择配置中频的特性。 PLL根据滤波器的输出解调输出频率。

公开(公告)号：US07448003B2

公开(公告)日：2008-11-04

申请号：US11452542

申请日：2006-06-13

申请人： Pengfei Zhang ,  Xisheng Zhang ,  Yuping Wu

发明人： Pengfei Zhang ,  Xisheng Zhang ,  Yuping Wu

IPC分类号： G06F17/50

CPC分类号： G06F17/5045

摘要： A method for generating a layout for an analog circuit design is provided. The method includes tracing a signal flow through a circuit netlist, and partitioning the circuit netlist into a digital portion and an analog portion. A signal flow is defined through the analog portion of the circuit netlist. A system for generating a layout for an analog circuit design is also included.

摘要翻译： 提供了一种用于产生用于模拟电路设计的布局的方法。 该方法包括跟踪通过电路网表的信号流，并将电路网表划分成数字部分和模拟部分。 通过电路网表的模拟部分定义信号流。 还包括用于产生用于模拟电路设计的布局的系统。

公开(公告)号：US06801585B1

公开(公告)日：2004-10-05

申请号：US09690698

申请日：2000-10-16

申请人： Thai M. Nguyen ,  Pengfei Zhang

发明人： Thai M. Nguyen ,  Pengfei Zhang

IPC分类号： H03D318

CPC分类号： H03D7/1441 ,  H03D7/1433 ,  H03D7/1458 ,  H03D7/165 ,  H03D2200/009

摘要： A wireless receiver apparatus including a voltage controller oscillator and mixer. The voltage controlled oscillator generates a first signal having a first frequency, and a second signal having the first frequency. The first and second signals are in quadrature. The mixer has a first input port for receiving the first signal, and a second input port for receiving the second signal, a third input port for receiving a third signal at a frequency centered about a third frequency. The mixer generates a fourth signal having a frequency centered about a fourth frequency which is equal to the third frequency less twice the first frequency.

摘要翻译： 一种包括电压控制振荡器和混频器的无线接收机装置。 压控振荡器产生具有第一频率的第一信号和具有第一频率的第二信号。 第一和第二信号是正交的。 混频器具有用于接收第一信号的第一输入端口和用于接收第二信号的第二输入端口，用于以中心为大约第三频率的频率接收第三信号的第三输入端口。 混频器产生具有以第四频率为中心的频率的第四信号，第四频率等于第三频率小于第一频率的两倍。

公开(公告)号：US06778022B1

公开(公告)日：2004-08-17

申请号：US10057707

申请日：2002-01-24

申请人： Pengfei Zhang ,  Chet Soorapanth

发明人： Pengfei Zhang ,  Chet Soorapanth

IPC分类号： H03L700

CPC分类号： H03L7/18 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/124 ,  H03B2201/0266 ,  H03J2200/10 ,  H03L7/099

摘要： Circuits and methods for tuning voltage-controlled oscillators. A control voltage is applied through an isolation resistor to a varactor. The varactor capacitance is AC coupled through a second capacitance. The control voltage may be analog or digital. In a specific embodiment, multiple tuning diodes, and both analog and digital control voltages are used. The isolation resistor is outside the VCO tank circuit for low phase noise, excessive Kvco is reduced, and the control and output voltages of the oscillator may swing over the entire supply range. The varactor capacitance may be junction, MOS, or other type of varactor.

摘要翻译： 用于调谐压控振荡器的电路和方法。 控制电压通过隔离电阻施加到变容二极管。 变容二极管电容通过第二电容进行交流耦合。 控制电压可以是模拟或数字。 在具体实施例中，使用多个调谐二极管以及模拟和数字控制电压两者。 隔离电阻在VCO振荡电路之外，用于低相位噪声，过低的Kvco会降低，并且振荡器的控制和输出电压可能在整个电源范围内摆动。 变容二极管电容可以是结，MOS或其他类型的变容二极管。

公开(公告)号：US06748204B1

公开(公告)日：2004-06-08

申请号：US09691297

申请日：2000-10-17

申请人： Behzad Razavi ,  Pengfei Zhang

发明人： Behzad Razavi ,  Pengfei Zhang

IPC分类号： H04B110

CPC分类号： H03D7/1441 ,  H03D7/1433 ,  H03D2200/0043

摘要： In accordance with the present invention a mixer circuit noise reduction technique is provided. The mixer circuit of the present invention includes a gain stage for receiving a first signal and producing an output signal. The mixer circuit also includes a bias circuit coupled to the gain stage through a common node for providing a bias current to the gain stage, the bias circuit having an input for receiving a second signal, and in accordance therewith, varying the bias current. Additionally, the mixer circuit includes a frequency dependent current shunt circuit coupled between the common node and a reference voltage, wherein a first portion of the bias current frequency components within a first frequency range are coupled to the reference voltage by the shunt circuit, and a second portion of the bias current frequency components within a second frequency range are coupled to the reference voltage by the shunt circuit, the first portion being larger than the second portion. As a result, the noise in the mixer circuit is reduced while the gain is enhanced.

摘要翻译： 根据本发明，提供了一种混频器电路噪声降低技术。 本发明的混频器电路包括用于接收第一信号并产生输出信号的增益级。 混频器电路还包括通过公共节点耦合到增益级的偏置电路，用于向增益级提供偏置电流，偏置电路具有用于接收第二信号的输入，并且根据该偏置电流改变偏置电流。 此外，混频器电路包括耦合在公共节点和参考电压之间的频率相关的电流分流电路，其中第一频率范围内的偏置电流频率分量的第一部分由分流电路耦合到参考电压，并且 在第二频率范围内的偏置电流频率分量的第二部分由分流电路耦合到参考电压，第一部分大于第二部分。 结果，混合电路中的噪声减小，同时增益增加。