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    • 4. 发明授权
    • Dynamic frequency selection scheme for IEEE 802.11 WLANs
    • IEEE 802.11 WLAN的动态频率选择方案
    • US07206840B2
    • 2007-04-17
    • US09976339
    • 2001-10-12
    • Sunghyun ChoiStefan MangoldAmjad Soomro
    • Sunghyun ChoiStefan MangoldAmjad Soomro
    • G06F15/173
    • H04W36/06H04W16/14H04W84/12
    • Disclosed is a method and system for dynamically selecting a communication channel between an access point (AP) and a plurality of stations (STAs) in an IEEE 802.11 wireless local area network (WLAN). The method includes the steps of: determining whether a new channel to be used by the plurality of STAs is needed; measuring the channel quality of a plurality of frequency channels by at least one of the plurality of STAs; reporting the quality of the plurality of frequency channels in terms of a received signal strength indication (RSSI), Clear Channel Assessment (CCA) busy periods and periodicity; and, selecting one of the candidate channels based on the channel quality report for use in communication between the AP and the plurality of STAs.
    • 公开了用于在IEEE 802.11无线局域网(WLAN)中动态地选择一个接入点(AP)和多个站(STA)之间的通信信道的方法和系统。 该方法包括以下步骤:确定是否需要由多个STA使用的新信道; 通过所述多个STA中的至少一个来测量多个频率信道的信道质量; 根据接收信号强度指示(RSSI),清除信道评估(CCA)繁忙周期和周期性来报告多个频率信道的质量; 以及基于用于AP与多个STA之间的通信中的信道质量报告来选择一个候选信道。
    • 8. 发明授权
    • Circuit arrangement
    • 电路布置
    • US07196478B2
    • 2007-03-27
    • US10494749
    • 2002-10-24
    • Jacob Dijkstra
    • Jacob Dijkstra
    • H05B37/00H05B39/00H05B41/14H05B37/02H05B39/04H05B41/36G05F1/00
    • H05B41/3924H05B41/042
    • A driver for driving a gas discharge lamp includes an inductive ballast implemented as auto-transformer having a central tap, connected between one output terminal and a first input terminal, and a triac connected between a second output terminal and a second input terminal. The central tap of the ballast is connected, via a capacitor, to the second output terminal. A control unit has a sense input for sensing the phase of an input voltage at the first input terminal, and is adapted to trigger the triac at a predetermined phase (Φp) after a zero-crossing of the input voltage, the predetermined phase (Φp) being in the range of ΔΦ+10° to ΔΦ+15°, ΔΦ being the nominal phase lag of the lamp current with respect to the input voltage.
    • 用于驱动气体放电灯的驱动器包括实现为具有连接在一个输出端子和第一输入端子之间的中央抽头的自动变压器的电感镇流器和连接在第二输出端子和第二输入端子之间的三端双向可控硅开关元件。 镇流器的中心抽头通过电容器连接到第二输出端子。 控制单元具有感测输入,用于感测在第一输入端子处的输入电压的相位,并且适于在经过零交叉之后将三端双向可控硅开关触发在预定相位(Phi

      P < 输入电压,预定相位(Phi

      )在DeltaPhi + 10°至DeltaPhi + 15°的范围内,DeltaPhi是相对于输入电压的灯电流的标称相位滞后。

    • 9. 发明申请
    • Gas discharge lamp with down conversion phosphor
    • 气体放电灯带有下变频荧光粉
    • US20060290258A1
    • 2006-12-28
    • US10569183
    • 2004-08-16
    • Claus FeldmannMaya DoytchevaAndries Meijerink
    • Claus FeldmannMaya DoytchevaAndries Meijerink
    • H01J1/62H01J63/04
    • C09K11/7791C09K11/7734C09K11/7777H01J61/44
    • A gas discharge lamp fitted with a gas discharge vessel filled with a gas filling suitable for a gas discharge which emits VUV radiation, with a phosphor coating containing a down-conversion phosphor and with means for igniting and maintaining a gas discharge, in which the down-conversion phosphor has, in a host lattice, a pair of activators of a first lanthanoid ion and a second lanthanoid ion and a sensitizer selected from the group formed by the thallium(I) ion and lead(II) ion, is environmentally friendly and has a high lamp efficiency (lamp. The invention also relates to a down-conversion phosphor comprising, in a host lattice, a pair of activators of a first lanthanoid ion and a second lanthanoid ion and a sensitizer selected from the group formed by the thallium(I) ion and lead(II) ion, wherein the sensitizer occupies a crystallographic site with a coordination number C.N.≧10.
    • 一种气体放电灯,其装有气体放电容器,该气体放电容器填充有适用于发出VUV辐射的气体放电的气体填充物,其中含有下转换荧光体的荧光体涂层和用于点燃和保持气体放电的装置, 转化磷光体在主晶格中具有第一镧系元素离子和第二镧系元素离子的活化剂对,以及选自由铊(I)离子和铅(II)离子形成的基团的敏化剂,是环境友好的, 具有较高的灯效率(灯)本发明还涉及一种下转换荧光体,其在宿主晶格中包含一对第一镧系元素离子和第二镧系元素的激活剂和选自由铊形成的组的敏化剂 (I)离子和铅(II)离子,其中敏化剂占据配位数CN> = 10的结晶位点。
    • 10. 发明申请
    • Display device and electronic appliance for use in combination therewith
    • 与其组合使用的显示装置和电子设备
    • US20060107566A1
    • 2006-05-25
    • US10538095
    • 2003-12-05
    • Bas Jan Van Rens
    • Bas Jan Van Rens
    • G09F19/00
    • H04M1/0268G09F9/301G09F9/35G09F11/29H04M2250/16
    • The display device of the invention comprises a flexible display element that can be extended in rollable fashion between a first position and a second position. In the first position the element is present in a housing and in the second position it is at least partially visible. The display element is supported in its second position by foldable arms. According to the invention a foldable arm comprises means which facilitate the extension of the display from the first to the second position and from the second position to a further position. These means also counteract any tendency of the display to return by itself from the second or any further position to the first position.
    • 本发明的显示装置包括可在第一位置和第二位置之间以可滚动的方式延伸的柔性显示元件。 在第一位置,元件存在于壳体中,并且在第二位置,该元件至少部分可见。 显示元件通过可折叠臂支撑在其第二位置。 根据本发明,可折叠臂包括便于显示器从第一位置延伸到第二位置并且从第二位置延伸到另一位置的装置。 这些装置还抵消了显示器自身从第二或任何其他位置返回到第一位置的任何趋势。