Triode-type field emission device having field emitter composed of emitter tips with diameter of nanometers and method for fabricating the same
    2.
    发明授权
    Triode-type field emission device having field emitter composed of emitter tips with diameter of nanometers and method for fabricating the same 失效
    具有由直径为纳米的发射极尖组成的场发射体的三极型场发射器件及其制造方法

    公开(公告)号:US06472802B1

    公开(公告)日:2002-10-29

    申请号:US09471892

    申请日:1999-12-23

    IPC分类号: H01J102

    CPC分类号: H01J3/022 H01J31/127

    摘要: A triode-type field emission device includes an insulating substrate; a cathode formed on the insulating substrate; a field emitter aligned on the cathode, wherein the field emitter includes a plurality of emitter tips and each emitter tip has the diameter of nanometers; an insulating layer positioned around the field emitter for electrically isolating the field emitter; and a gate electrode formed on the insulating layer, wherein the gate electrode is closed to an upper portion of the field emitter. Therefore, the triode-type field emission device may be operable in a low voltage.

    摘要翻译: 三极管型场发射器件包括绝缘衬底; 形成在绝缘基板上的阴极; 在阴极上对准的场发射体,其中场发射器包括多个发射极尖端,并且每个发射极尖端具有纳米的直径; 围绕场发射器定位的绝缘层,用于电场隔离场致发射体; 以及形成在所述绝缘层上的栅电极,其中所述栅电极与所述场发射体的上部相接。 因此,三极管型场发射器件可以在低电压下工作。

    Pulse signal generator for ultra-wideband radio transception and radio transceiver having the same
    3.
    发明申请
    Pulse signal generator for ultra-wideband radio transception and radio transceiver having the same 有权
    用于超宽带无线电收发的脉冲信号发生器和具有相同功能的无线电收发器

    公开(公告)号:US20050141602A1

    公开(公告)日:2005-06-30

    申请号:US11004383

    申请日:2004-12-03

    摘要: Provided are a pulse signal generator for UWB radio transception and a radio transceiver having the same. The pulse signal generator includes: an envelope generator generating a plurality of envelope signals; a local oscillator array composed of a plurality of high frequency oscillators, each outputting two oscillation signals having a phase difference from each other; a multiplier array receiving the envelope signals and the oscillation signals and outputting signals obtained by respectively multiplying the envelope signals by the oscillation signals; and an I channel adder and a Q channel adder outputting an I channel pulse signal and a Q channel pulse signal by adding output signals having the same phase components among the signals output from the multiplier array, respectively.

    摘要翻译: 提供了一种用于UWB无线电侦听的脉冲信号发生器和具有该脉冲信号发生器的无线电收发器。 脉冲信号发生器包括:产生多个包络信号的包络发生器; 由多个高频振荡器组成的本地振荡器阵列,每个振荡器输出具有彼此相位差的两个振荡信号; 接收包络信号和振荡信号的乘法器阵列,并输出通过将包络信号乘以振荡信号而获得的信号; 以及I通道加法器和Q通道加法器,分别通过将从乘法器阵列输出的信号中相加相位分量的输出信号相加,输出I通道脉冲信号和Q通道脉冲信号。

    Method and apparatus for providing dual variable clocks for low-power wireless packet communication
    5.
    发明申请
    Method and apparatus for providing dual variable clocks for low-power wireless packet communication 有权
    提供用于低功率无线分组通信的双可变时钟的方法和装置

    公开(公告)号:US20060203741A1

    公开(公告)日:2006-09-14

    申请号:US11299203

    申请日:2005-12-09

    IPC分类号: H04J1/16 H04Q7/24

    摘要: Provided is a wireless packet communication method, and more particularly, a method and apparatus for enabling low-power communication by providing separate driving clocks optimized for a lower part for performing the function of a physical layer part and an upper part for performing the function of an upper layer above the physical layer in a wireless packet communication system. The method includes a first clock providing step of measuring actual data transmission and reception rates at a predetermined period, setting up a frequency (F1) of a first clock based on the measured rates, and providing the first clock to the upper part and a second clock providing step of determining a transfer mode of the wireless packet communication system, detecting a frequency (F2) of a second clock selected according to the determined transfer mode, and providing the second clock to the lower part.

    摘要翻译: 本发明提供一种无线分组通信方法,更具体地说,涉及一种能够实现低功率通信的方法和装置,该方法和装置通过提供针对下部优化的单独的驱动时钟,用于执行物理层部分和上部的功能,以执行功能 在无线分组通信系统中的物理层上方的上层。 该方法包括:第一时钟提供步骤,用于在预定时间段内测量实际数据发送和接收速率,基于测量的速率建立第一时钟的频率(F 1> 1),并且提供第一时钟 时钟到上半部分,以及第二时钟提供步骤,确定无线分组通信系统的传送模式,检测根据所确定的传送模式选择的第二时钟的频率(F 2> 2),以及 向下部提供第二个时钟。

    Adaptive wireless network system comprising central optimizer and method thereof

    公开(公告)号:US07020097B2

    公开(公告)日:2006-03-28

    申请号:US10033421

    申请日:2001-12-28

    IPC分类号: H04L12/26

    摘要: In the adaptive wireless network system having a central optimizer and a method thereof, and in the record medium capable of being read through a computer having a writing of a program to realize the inventive method, in which information for a use wave environment of a corresponding subnet is gained from an access point regardless of a sort of wireless communication instruments so as to apply an optimum transmission/reception type of the corresponding subnet thereto; the system includes an optimizing unit for selecting optimum transmission/reception types of sub networks and transmitting them; an access point determining unit for providing node activity representative data and activity representative data of access point itself, to the optimizing unit, and determining it as the optimum transmission/reception type; and a communication node determining unit for re-determining its own transmission/reception type according to a requirement of the access point determining unit.

    Bluetooth broadcasting method
    7.
    发明授权
    Bluetooth broadcasting method 有权
    蓝牙广播方式

    公开(公告)号:US07613141B2

    公开(公告)日:2009-11-03

    申请号:US10736963

    申请日:2003-12-15

    IPC分类号: H04H20/71

    摘要: The present invention provides an efficient data transmission method in BLUETOOTH broadcasting. The method of BLUETOOTH broadcasting generates a first broadcast packet and determines whether a slot is included in an access window. In a case where the slot is not included in the access window, a service interface (SI) information value is set to the assignment information of the slot. The first broadcast packet is then transmitted. A second broadcast packet is then generated and it is determined whether a slot is included in the access window. If the slot is not included in the access window, the SI information value is set to zero. The second broadcast packet is then transmitted. A slave receives the broadcast packets and obtains the SI information values. It is then determined whether the slave transmits data at the next odd numbered slot.

    摘要翻译: 本发明提供了一种蓝牙广播中的有效数据传输方法。 BLUETOOTH广播的方法生成第一广播分组并且确定在接入窗口中是否包括时隙。 在时隙不包括在接入窗口中的情况下,将业务接口(SI)信息值设置为时隙的分配信息。 然后发送第一个广播数据包。 然后生成第二广播分组,并且确定在接入窗口中是否包括时隙。 如果插槽未包含在访问窗口中,则SI信息值设置为零。 然后发送第二广播分组。 从机收到广播报文,获取SI信息值。 然后确定从机是否在下一个奇数时隙发送数据。

    Method and apparatus for providing dual variable clocks for low-power wireless packet communication
    8.
    发明授权
    Method and apparatus for providing dual variable clocks for low-power wireless packet communication 有权
    提供用于低功率无线分组通信的双可变时钟的方法和装置

    公开(公告)号:US07525999B2

    公开(公告)日:2009-04-28

    申请号:US11299203

    申请日:2005-12-09

    IPC分类号: H04J3/06

    摘要: Provided is a wireless packet communication method, and more particularly, a method and apparatus for enabling low-power communication by providing separate driving clocks optimized for a lower part for performing the function of a physical layer part and an upper part for performing the function of an upper layer above the physical layer in a wireless packet communication system. The method includes a first clock providing step of measuring actual data transmission and reception rates at a predetermined period, setting up a frequency (F1) of a first clock based on the measured rates, and providing the first clock to the upper part and a second clock providing step of determining a transfer mode of the wireless packet communication system, detecting a frequency (F2) of a second clock selected according to the determined transfer mode, and providing the second clock to the lower part.

    摘要翻译: 本发明提供一种无线分组通信方法,更具体地说,涉及一种能够实现低功率通信的方法和装置,该方法和装置通过提供针对下部优化的单独的驱动时钟,用于执行物理层部分和上部的功能,以执行功能 在无线分组通信系统中的物理层上方的上层。 该方法包括:第一时钟提供步骤,用于在预定周期测量实际数据发送和接收速率,基于测量的速率建立第一时钟的频率(F1),并将第一时钟提供给上部和第二时钟 时钟提供步骤,确定所述无线分组通信系统的传送模式,检测根据所确定的传送模式选择的第二时钟的频率(F2),以及向所述下部提供所述第二时钟。

    Pulse signal generator for ultra-wideband radio transception and radio transceiver having the same
    9.
    发明授权
    Pulse signal generator for ultra-wideband radio transception and radio transceiver having the same 有权
    用于超宽带无线电收发的脉冲信号发生器和具有相同功能的无线电收发器

    公开(公告)号:US07508860B2

    公开(公告)日:2009-03-24

    申请号:US11004383

    申请日:2004-12-03

    IPC分类号: H04B1/00

    摘要: Provided are a pulse signal generator for UWB radio transception and a radio transceiver having the same. The pulse signal generator includes: an envelope generator generating a plurality of envelope signals; a local oscillator array composed of a plurality of high frequency oscillators, each outputting two oscillation signals having a phase difference from each other; a multiplier array receiving the envelope signals and the oscillation signals and outputting signals obtained by respectively multiplying the envelope signals by the oscillation signals; and an I channel adder and a Q channel adder outputting an I channel pulse signal and a Q channel pulse signal by adding output signals having the same phase components among the signals output from the multiplier array, respectively.

    摘要翻译: 提供了一种用于UWB无线电收发的脉冲信号发生器和具有该脉冲信号发生器的无线收发器。 脉冲信号发生器包括:产生多个包络信号的包络发生器; 由多个高频振荡器组成的本地振荡器阵列,每个振荡器输出具有彼此相位差的两个振荡信号; 接收包络信号和振荡信号的乘法器阵列,并输出通过将包络信号乘以振荡信号而获得的信号; 以及I通道加法器和Q通道加法器,分别通过将从乘法器阵列输出的信号中相加相位分量的输出信号相加,输出I通道脉冲信号和Q通道脉冲信号。