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    • 4. 发明专利
    • Transmitter-receiver for broadcast signal
    • 广播信号发射接收机
    • JP2005005980A
    • 2005-01-06
    • JP2003166461
    • 2003-06-11
    • Maspro Denkoh CorpMurata Mfg Co LtdNippon Hoso Kyokai マスプロ電工株式会社日本放送協会株式会社村田製作所
    • KUBO TOSHIHIRONAKATOGAWA TAKESHISUGINOSHITA FUMIYASUSHIMIZU TAKASHISAKAMOTO KOICHIMIKAMI SHIGEYUKITAGO SHIGERUTAKEDA SEISO
    • H04B1/08H04H20/00H04H20/02H04H20/06H04H20/74H04H40/27H04N5/00H04H1/00
    • PROBLEM TO BE SOLVED: To make it possible to surely transmit radio waves from a transmitter to respective receivers and to satisfactorily restore the broadcast signal without being affected by the reflected waves of the radio waves transmitted from the transmitter on the receiver side in a transmitter-receiver for the broadcast signal which ditributes the broadcast signal wirelessly from the transmitter to a plurality of receivers by setting the transmitter at the roof, wall surface or veranda of a building, and setting the receiver at the window or veranda of each room of a building.
      SOLUTION: A portion of transmission radio waves from a transmission antenna 12 is reflected by an object such as a metallic plate or an automobile existing on the side wall of a building or ground, and even when the reflected waves are received by a receiving antenna 22, the set position of a receiver 20 is adjusted through a mounting metal fitting 24, and the high frequency phase of the reflected waves is suppressed so that the influence of the reflected waves can be reduced.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了使得有可能将发射机的无线电波确实地发射到各个接收机,并且令人满意地恢复广播信号,而不受来自接收机侧的发射机的无线电波的反射波的影响 用于广播信号的发射机 - 接收机,其将广播信号从发射机无线地分配给多个接收机,通过将发射机设置在建筑物的屋顶,墙壁或阳台上,并将接收机设置在每个房间的窗户或阳台 的建筑物。 解决方案:来自发送天线12的一部分发射无线电波被存在于建筑物或地面侧壁上的金属板或汽车等物体反射,即使反射波被接收到 接收天线22,通过安装金属配件24调节接收器20的设定位置,并且抑制反射波的高频相位,从而可以降低反射波的影响。 版权所有(C)2005,JPO&NCIPI
    • 8. 发明专利
    • Transmitter, receiver and program of broadband video signal
    • 发射机,接收机和宽带视频信号程序
    • JP2014003491A
    • 2014-01-09
    • JP2012138071
    • 2012-06-19
    • Nippon Hoso Kyokai 日本放送協会
    • KAWAMOTO JUNICHIRONAKATOGAWA TAKESHIOYAMADA KIMIYUKI
    • H04N7/01H04N7/173
    • PROBLEM TO BE SOLVED: To output a broadband video signal with low delay from a receiver, in a transmission system performing serial transmission of a broadband video signal.SOLUTION: A write control unit 18 in the pixel decimation unit 14 of a mapping section 13 provided in a transmitter 1 writes the 4K video data for one frame in a main memory 10. A 2 pixel decimation control unit 19 reads a line of 4K video data from the main memory 10 for every 2 pixels while decimating, and writes the data for every 2 pixels thus read in any one of four sub-memories 11-1 through 11-4. The data read in the sub-memories 11-1 through 11-4 is outputted, as the HD-SDI data of 16 channels, to a transmission unit 30 via a line decimation unit 15-1 and a word decimation unit 16-1, multiplexed according to the 10G-SDI standard for every 8 channels, and converted into optical signals of 2 channels before being transmitted to a transmission line 3.
    • 要解决的问题:在执行宽带视频信号的串行传输的传输系统中从接收器输出具有低延迟的宽带视频信号。解决方案:提供映射部分13的像素抽取单元14中的写入控制单元18 在发送器1中,将一帧的4K视频数据写入主存储器10.2像素抽取控制单元19在抽取时从每个2个像素读取来自主存储器10的4K视频数据的行,并且为每个 因此在4个子存储器11-1至11-4中的任何一个中读取2个像素。 在子存储器11-1至11-4中读取的数据作为16个通道的HD-SDI数据通过行抽取单元15-1和字抽取单元16-1输出到发送单元30, 根据10G-SDI标准对每8个信道进行多路复用,并在传输到传输线3之前转换成2个信道的光信号。
    • 9. 发明专利
    • Optical modulation device and optical modulation method
    • 光学调制装置和光学调制方法
    • JP2005215196A
    • 2005-08-11
    • JP2004020225
    • 2004-01-28
    • Nippon Hoso Kyokai 日本放送協会
    • NAKATOGAWA TAKESHIMAEDA MIKIO
    • G02F1/035G02F1/03
    • PROBLEM TO BE SOLVED: To provide optical modulation device, with which a light carrier wave components are suppressed down to an arbitrary level. SOLUTION: The optical modulation device 30 is equipped with a MZ-type optical modulator 33 to branch and modulate an optical signal 110, a MZ-type optical modulator 34 to branch and modulate an optical signal 111, a multiplexing means 35 to multiplex optical signals 116, 117 outputted from the MZ-type optical modulators 33, 34, a voltage operation control part 36 to calculate direct current bias voltages to be supplied to the MZ-type optical modulators 33, 34 and to the multiplexing means 35, an electrical signal source 37 to generate an electrical signal 102, a π/2 phase shifter 38 to shift a phase of an electrical signal 105 by π/2, a variable direct current voltage source 39 to supply a direct current bias voltage 107 to the MZ-type optical modulator 33, a variable direct current voltage source 40 to supply a direct current bias voltage 108 to the MZ-type optical modulator 34, and a variable direct current voltage source 41 to supply a direct current bias voltage 109 to the multiplexing means 35. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供光载波分量被抑制到任意水平的光调制装置。 解决方案:光调制装置30配备有MZ型光调制器33,用于分支和调制光信号110,MZ型光调制器34以分支和调制光信号111,多路复用装置35至 从MZ型光调制器33,34输出的复用光信号116,117,电压运算控制部36,计算要提供给MZ型光调制器33,34和多路复用装置35的直流偏置电压, 用于产生电信号102的电信号源37,将电信号105的相位移位π/ 2的π/ 2移相器38,将可变直流电压源39提供给直流偏置电压 MZ型光调制器33,向MZ型光调制器34提供直流偏置电压108的可变直流电压源40以及向多路单元提供直流偏置电压109的可变直流电压源41 (C)2005,JPO&NCIPI
    • 10. 发明专利
    • Video data transmitter and receiver
    • 视频数据发射机和接收机
    • JP2011009812A
    • 2011-01-13
    • JP2009148264
    • 2009-06-23
    • Nippon Hoso Kyokai 日本放送協会
    • NAKATOGAWA TAKESHINAKAMURA MADOKAOYAMADA KIMIYUKI
    • H04J3/00H04L12/52H04N7/173
    • PROBLEM TO BE SOLVED: To efficiently transmit a non-compression video signal in a long distance by using a public optical communication network.SOLUTION: Frame conversion portions 11-18 of a transmitter 1 input Dual Link HD-SDI signals, discard parity bits and staff bits of HANC data and pixel data, convert data sequences of the HD-SDI signals by SDI clocks into data sequences by SONET clocks and house the data sequences in an OC-192 frame for transmission to a wide area network 3. Frame reconversion portions 21-28 of a receiver 2 convert the data sequences by the SONET clocks into data sequences of the HD-SDI signals by the SDI clocks for the OC-192 frame received from the wide area network 3, reproduce data discarded in the transmitter 1, and generate the original Dual Link HD-SDI signals and output the generated signals. Thus, a non-compression SHV signal can be transmitted at a long distance by using an existing public optical communication network such as the wide area network 3 to achieve cost reduction.
    • 要解决的问题:通过使用公共光通信网络来有效地发送长距离的非压缩视频信号。解决方案:发射机1的帧转换部分11-18输入双链路HD-SDI信号,丢弃奇偶校验位和 HANC数据和像素数据的工作人员位,通过SONET时钟将SDI时钟的HD-SDI信号的数据序列转换成数据序列,并将数据序列存储在OC-192帧中以传输到广域网3.帧再转换部分 21-28接收机2通过SONET时钟将数据序列转换成HD-SDI信号的数据序列,用于从广域网3接收到的OC-192帧的SDI时钟,再现在发射机1中丢弃的数据, 并生成原始的双链路HD-SDI信号并输出​​生成的信号。 因此,通过使用诸如广域网3的现有公共光通信网络,可以以较长的距离发送非压缩SHV信号,以实现成本降低。