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    Satellite broadcast receiver
    52.
    发明专利
    Satellite broadcast receiver 审中-公开
    卫星广播接收机

    公开(公告)号：JP2004140594A

    公开(公告)日：2004-05-13

    申请号：JP2002303363

    申请日：2002-10-17

    申请人： Sharp Corp ,  シャープ株式会社

    发明人： SHINKO HIROSHI

    IPC分类号： H04N7/20 ,  H01Q3/26 ,  H01Q25/00 ,  H04B1/16 ,  H04B1/18 ,  H04H20/00 ,  H04H1/00

    CPC分类号： H04H40/90 ,  Y02D70/00

    摘要： PROBLEM TO BE SOLVED: To reduce power consumption of a satellite broadcast receiver receiving a plurality of signals from satellites selectively.
    SOLUTION: The satellite broadcast receiver comprises a plurality of signal converting sections provided in correspondence with a plurality of signals being transmitted from satellites and performing frequency conversion of corresponding signals before being output, signal terminals for inputting/outputting electric signals, signal selection circuits provided between the plurality of signal converting sections and the signal terminals and transmitting desired signals among signals outputted from the plurality of signal converting sections to the signal terminals, and a power supply control section for controlling voltage supply to the plurality of signal converting sections. The power supply control section supplies an operation voltage to the signal converting sections selected depending on a control signal among the plurality of signal converting sections and stops operation voltage supply to other signal converting sections.
    COPYRIGHT: (C)2004,JPO

    摘要翻译： 解决的问题：为了降低从卫星选择性地接收多个信号的卫星广播接收机的功率消耗。 解决方案：卫星广播接收机包括与从卫星发送的多个信号相对应地提供的多个信号转换部分，并且在输出之前执行相应信号的频率转换，用于输入/输出电信号的信号端，信号选择 在所述多个信号转换部分和所述信号端子之间设置的电路，并且将从所述多个信号转换部分输出的信号中的期望信号发送到所述信号端子;以及电源控制部分，用于控制对所述多个信号转换部分的电压供应。 电源控制部分对根据多个信号转换部分中的控制信号选择的信号转换部分提供操作电压，并停止对其它信号转换部分的操作电压供应。 版权所有（C）2004，JPO

    56.
    发明专利
    失效

    公开(公告)号：JP2004500779A

    公开(公告)日：2004-01-08

    申请号：JP2001569925

    申请日：2001-03-20

    IPC分类号： H01L29/868 ,  H01Q1/36 ,  H01Q1/38 ,  H01Q9/04 ,  H01Q21/06 ,  H01Q23/00 ,  H01Q25/00

    摘要： A reconfigurable antenna capable of dynamic reconfigurability of several antenna parameters. Specifically, the present invention is an antenna comprising a plurality of surface PIN devices arranged in a gridlike array. Each of the SPIN devices can be individually activated or deactivated. When a SPIN device is activated, the surface of the device is injected with carriers such that a plasma is produced within the intrinsic region of the device. The plasma can be sufficiently conductive to produce conductor or metal like characteristics at the surface of the device. Various ones of the SPIN devices can be activated to electronically paint a conductive pattern upon the substrate supporting the PIN devices. Through selective activation of the SPIN devices various surface antenna patterns can be produced upon the substrate including dipoles, cross dipoles, loop antennas, Yagi-Uda type antennas, log periodic antennas, and the like. Additionally, the SPIN device grid may be selectively activated to produce holographic antennas. In a holographic antenna the SPIN devices are activated to produce a simulated metallization pattern that is excited by a surface RF wave transmitted onto the substrate from a surface mounted dipole antenna. The surface wave excites a particular antenna pattern depending upon the shape of the activated SPIN devices. Changing the pattern of the holographic antenna elements causes a beam steering and/or frequency adjustments of the antenna.

    METHOD AND APPARATUS FOR ESTIMATION OF ARRIVAL DIRECTION, TRANSMITTER/RECEIVER AND BASE-STATION DEVICE
    60.
    发明专利
    METHOD AND APPARATUS FOR ESTIMATION OF ARRIVAL DIRECTION, TRANSMITTER/RECEIVER AND BASE-STATION DEVICE 审中-公开

    公开(公告)号：JP2003255034A

    公开(公告)日：2003-09-10

    申请号：JP2002060848

    申请日：2002-03-06

    申请人： MITSUBISHI ELECTRIC CORP

    发明人： KIHIRA KAZUNARI ,  SEKIGUCHI TAKASHI ,  CHIBA ISAMU

    IPC分类号： H01Q25/00 ,  G01S3/42 ,  H04B7/26

    摘要： PROBLEM TO BE SOLVED: To obtain an arrival-direction estimation apparatus for efficiently controlling a transmitting-receiving beam, by estimating an arrival direction of a desired signal with a comparatively simple configuration. SOLUTION: The arrival-direction estimation apparatus is provided with a multibeam formation part 2 used, to form a multibeam by using received signals of antenna elements A1 to AK; reverse modulation parts 3-1 to 3-J used to reversely modulate an output signal of each beam by a known symbol train; a power-ratio estimation part 4, used to estimate a power ratio of the desired signal to an interference component on the basis of output signals of the parts 3-1 to 3-J; and a monopulse goniometric signal processing part 5, in which the output signal after inverse modulation of the beam having a largest estimated power ratio is selected as a sum signal and which estimates the arrival direction of the signal by a monopulse goniometric signal processing operation, together with a difference signal forming a pair with the selected beam. COPYRIGHT: (C)2003,JPO