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    • 24. 发明授权
    • Voltage conversion
    • 电压转换
    • US08400183B1
    • 2013-03-19
    • US13008328
    • 2011-01-18
    • Tony YeungMichael Yimin Zhang
    • Tony YeungMichael Yimin Zhang
    • H03K19/0175
    • H04L25/0264H02M3/07H02M2001/0025H02M2003/072
    • An embodiment of a method for powering a low-power device using a power supply designed for a high-power device is described. In such an embodiment, an input voltage is provided to a voltage converter at a first voltage level. The input voltage is periodically electrically coupled to and decoupled from the voltage converter during operation of the low-power device. An output voltage is output from the voltage converter at a second voltage level to power the low-power device. The output voltage is provided during both the input voltage being electrically coupled to and decoupled from the voltage converter, and the second voltage level is substantially less than the first voltage level.
    • 描述了使用为高功率设备设计的电源为低功率设备供电的方法的实施例。 在这样的实施例中,输入电压以第一电压电平提供给电压转换器。 在低功率器件的工作期间,输入电压周期性地电耦合到电压转换器并从电压转换器去耦。 输出电压从电压转换器以第二电压电平输出,为低功率器件供电。 在两个输入电压都被电耦合到电压转换器和从电压转换器去耦之间提供输出电压,而第二电压电平基本上小于第一电压电平。
    • 26. 发明授权
    • Thyristor semiconductor memory and method of manufacture
    • 晶闸管半导体存储器及其制造方法
    • US08093107B1
    • 2012-01-10
    • US12271758
    • 2008-11-14
    • Farid NematiScott RobinsKevin J. Yang
    • Farid NematiScott RobinsKevin J. Yang
    • H01L21/332H01L21/337H01L21/8238
    • G11C11/39H01L27/1027H01L29/66393H01L29/7436
    • A thyristor based semiconductor device includes a thyristor having cathode, P-base, N-base and anode regions disposed in electrical series relationship. The N-base region for the thyristor has a cross-section that defines an inverted “T” shape, wherein a buried well in semiconductor material forms is operable as a part of the N-base. The stem to the inverted “T” shape extends from the upper surface of the semiconductor material to the buried well. The P-base region for the thyristor extends laterally outward from a side of the stem that is opposite the anode region of the thyristor, and is further bounded between the buried well and a surface of the semiconductor material. A thinned portion for the N-base is defined between the cathode region of the thyristor and the buried well, and may include supplemental dopant of concentration greater than that for some other portion of the N-base.
    • 一种基于晶闸管的半导体器件包括具有阴极,P基极,N基极和阳极区域的晶闸管,其以电串联的关系设置。 用于晶闸管的N基区域具有限定反向“T”形的横截面,其中半导体材料形式的掩埋阱可操作为N基底的一部分。 反向“T”形的杆从半导体材料的上表面延伸到掩埋井。 用于晶闸管的P基区域从杆的与晶闸管的阳极区域相对的侧面横向向外延伸,并且进一步限定在掩埋阱和半导体材料的表面之间。 在晶闸管的阴极区域和掩埋阱之间限定了用于N-碱的薄化部分,并且可以包括浓度大于N基底的其它部分浓度的补充掺杂剂。
    • 28. 发明授权
    • Wireless communications apparatus and method
    • 无线通信装置及方法
    • US07146191B2
    • 2006-12-05
    • US10919811
    • 2004-08-16
    • James M. KernerChad Parker
    • James M. KernerChad Parker
    • H04B1/38
    • H04L63/0853H04M1/675H04W12/06H04W74/00H04W76/10H04W88/02
    • A wireless communication method and apparatus are described for increasing security for communication devices utilizing identification chips for accessing wireless networks and the associated billing for services. One aspect of the invention is an enhanced phone chip and a communications device adapted to engage the enhanced phone chip, which then cannot be installed or removed from the wireless communications device by unauthorized users. In one embodiment a security key mates to the identification chip and is utilized for installing and removing the enhanced phone chip. The security key preferably has a display upon which information about the communication device is displayed prior to removing the security key after installing the enhanced phone chip. Other aspects of the invention include wireless base station communication devices which support wired (dedicated and non-dedicated), and more preferably wireless extensions, while providing sharing of wireless network resources and interconnectivity between base station and extensions.
    • 描述了一种无线通信方法和装置,用于增加利用用于访问无线网络的识别芯片的通信设备的安全性以及相关的服务计费。 本发明的一个方面是增强的电话芯片和适于接合增强型电话芯片的通信设备,该增强型电话芯片然后不能被未经授权的用户从无线通信设备安装或移除。 在一个实施例中,安全密钥与识别芯片配合,并用于安装和移除增强的电话芯片。 安全密钥优选地具有在安装增强型电话芯片之前在去除安全密钥之前显示关于通信设备的信息的显示器。 本发明的其它方面包括支持有线(专用和非专用),更优选地是无线扩展的无线基站通信设备,同时提供无线网络资源的共享和基站与分机之间的互连性。