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41. 发明专利

JP2009118345A Tmcc signal receiving apparatus 有权
标题翻译： TMCC信号接收装置
公开(公告)号：JP2009118345A
公开(公告)日：2009-05-28
申请号：JP2007291231
申请日：2007-11-08
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： TAGUCHI MAKOTO , HAMAZUMI HIROYUKI , SHIBUYA KAZUHIKO
IPC分类号： H04J11/00 , H04B1/16 , H04N5/44 , H04N7/16 , H04N7/173
摘要： PROBLEM TO BE SOLVED: To provide a TMCC signal receiving apparatus which monitors an EWS signal for emergency information broadcast with reduced power consumption.
SOLUTION: The TMCC signal receiving apparatus comprises: a receiving circuit 11 which converts a receiving signal of an RF band into an IF signal and outputs the IF signal; a TMCC demodulation circuit 12 which demodulates a TMCC signal from the IF signal and outputs TMCC information contained in the TMCC signal; a symbol synchronizing reproduction circuit 13 which reproduces symbol timing of an OFDM signal from the IF signal, generates and outputs a symbol synchronization signal; a frame synchronizing reproduction circuit 14 which reproduces frame timing from the TMCC information, generates and outputs a frame synchronization signal; and a control circuit 15 which generates and outputs a control signal for controlling supply of power to the receiving circuit 11 so as to supply power only to a predetermined symbol on the basis of the respective synchronization signals.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种TMCC信号接收装置，其以降低的功率消耗来监视用于紧急信息广播的EWS信号。解决方案：TMCC信号接收装置包括：接收电路11，其将RF频带的接收信号转换为IF信号并输出IF信号; TMCC解调电路12，对来自IF信号的TMCC信号进行解调并输出TMCC信号中包含的TMCC信息; 符号同步再现电路13，其从IF信号再现OFDM信号的符号定时，产生并输出符号同步信号; 从TMCC信息再现帧定时的帧同步再生电路14生成并输出帧同步信号; 以及控制电路15，其产生并输出用于控制向接收电路11供电的控制信号，以便仅根据各个同步信号向预定符号供电。版权所有（C）2009，JPO＆INPIT

42. 发明专利

JP2008295099A Closed-space transmission apparatus 有权
标题翻译：封闭空间传输装置
公开(公告)号：JP2008295099A
公开(公告)日：2008-12-04
申请号：JP2008221091
申请日：2008-08-29
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： TAKAHASHI KOICHIRO , TSUCHIDA KENICHI , SHIBUYA KAZUHIKO , NAKAHARA SHUNJI
IPC分类号： H04B7/10 , H04B5/00 , H04B7/02 , H04B7/06 , H04J11/00
摘要： PROBLEM TO BE SOLVED: To achieve stable reception in an entire closed space by enhancing a right reception place rate without using a plurality of transmission means, in particular, a plurality of antennas when receiving orthogonal frequency division multiplexing (OFDM) digital waves such as integrated services digital broadcasting for terrestrial (ISDB-T) digital broadcast waves within the closed space such as an underground shopping area or underground parking lot surrounded with radio reflectors.
SOLUTION: A closed-space transmission apparatus of the present invention comprises: a leakage coaxial cable 302; a means for inputting an input signal to one terminal of the leakage coaxial cable 302; a means for temporally changing at least one of the amplitude, frequency, phase and delay time of a signal outputted from the other terminal of the leakage coaxial cable 302; and a means for inputting a signal obtained by the temporal change means to the other terminal of the leakage coaxial cable 302, and is configured to temporally change radiation characteristics or a radiation pattern of radio waves to be radiated from the leakage coaxial cable 302 into the closed space surrounded with radio reflectors.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了通过在不使用多个发送装置的情况下，特别是在接收正交频分复用（OFDM）数字波时的多个天线中增强正确的接收位置速率来在整个封闭空间中实现稳定的接收例如在封闭空间内的综合业务数字广播（ISDB-T）数字广播波，例如地下购物区或由无线电反射器包围的地下停车场。解决方案：本发明的封闭空间传输装置包括：泄漏同轴电缆302; 用于将输入信号输入到泄漏同轴电缆302的一个端子的装置; 用于暂时改变从泄漏同轴电缆302的另一个端子输出的信号的幅度，频率，相位和延迟时间中的至少一个的装置; 以及用于将通过时间改变装置获得的信号输入到泄漏同轴电缆302的另一个端子的装置，并且被配置为将辐射特性或将从泄漏同轴电缆302辐射的无线电波的辐射图案时间地改变为封闭的空间被无线电反射器包围。版权所有（C）2009，JPO＆INPIT

43. 发明专利

JP2008098852A Squelch apparatus and squelch control method 有权
标题翻译： SQUELCH装置和SQUELCH控制方法
公开(公告)号：JP2008098852A
公开(公告)日：2008-04-24
申请号：JP2006276721
申请日：2006-10-10
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： HAMAZUMI HIROYUKI , SHIBUYA KAZUHIKO
IPC分类号： H04B7/208 , H04H1/00 , H04H20/06 , H04H20/12 , H04H20/28 , H04J11/00
摘要： PROBLEM TO BE SOLVED: To solve the problems that, when interference waves for which contents of a program are different from desired waves mix in the antenna of a relay station which receives the desired waves (ISDB-T signals) originated from a high order station, the interference waves suppress the desired waves and the signals of the contents different from the program to be broadcasted originally are sent out of the relay station.
SOLUTION: This squelch apparatus is provided in the relay station. The squelch apparatus extracts network identification information and/or prescribed squelch identification information from the ISDB-T signals sent out of a high order station. Then, between the extracted identification information and the identification information provided beforehand, whether or not at least the information of region identification and regional operator identification included in the identification information matches is compared. When the identification information does not match, the ISDB-T signals are interrupted.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了解决当接收到期望波的中继站（ISDB-T信号）的天线中的期望波组合的节目内容不同的干扰波混合在一起时高阶站，干扰波抑制期望的波，并且与原始广播的节目不同的内容的信号被发送出中继站。解决方案：该中断站设置该静噪装置。静噪装置从高阶站发出的ISDB-T信号中提取网络识别信息和/或规定的静噪识别信息。然后，在所提取的识别信息和事先提供的识别信息之间，比较包括在识别信息中的至少区域识别信息和区域性操作者识别信息是否匹配。当识别信息不匹配时，ISDB-T信号中断。版权所有（C）2008，JPO＆INPIT

44. 发明专利

JP2007158937A Diversity receiver 有权
标题翻译：多样性接收者
公开(公告)号：JP2007158937A
公开(公告)日：2007-06-21
申请号：JP2005353616
申请日：2005-12-07
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： OKABE SATOSHI , IKEDA TETSUOMI , SHIBUYA KAZUHIKO
IPC分类号： H04L1/22 , H04B7/08
摘要： PROBLEM TO BE SOLVED: To provide a diversity receiver capable of correcting the transmission errors of digital data, even when error-correcting coding is not performed, and capable of improving wrong decisions based on a decision by majority.
SOLUTION: A diversity receiver includes a plurality of receivers 121, 123, 125 for receiving digital data; a soft decision weighting means 213 for adding weighting bits as many as the preset number of bits, on the basis of reception attributes of the receivers for making a soft decision, regarding bits of a plurality of systems of digital data received by the plurality of receivers; and a decision based on the majority decision means 215 for deciding on the values of bits of the digital data in accordance with a decision by majority, regarding the number of bits with a value "1" and the number of bits with a value "0" in data, to which the weighting bits are added by the soft decision weighting means for the bits of the plurality of systems of digital data.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：即使在不执行错误校正编码的情况下，也能够提供能够校正数字数据的传输错误的分集接收机，并能够根据多数决定改善错误判定。解决方案：分集接收机包括用于接收数字数据的多个接收机121,123,125; 软决策加权装置213，用于根据用于进行软判决的接收机的接收属性，关于由多个接收机接收到的多个数字数据系统的比特来添加与预置位数一样多的加权比特 ; 以及基于多数决定装置215的决定，用于根据关于具有值“1”的比特数和具有值“0”的比特数，根据多数决定来确定数字数据的比特值 “在数据中，加密比特由软判决加权装置添加到多个数字数据系统的比特中。版权所有（C）2007，JPO＆INPIT

45. 发明专利

JP2006295349A Pilot signal detecting apparatus and method 有权
标题翻译：试点信号检测装置和方法
公开(公告)号：JP2006295349A
公开(公告)日：2006-10-26
申请号：JP2005110440
申请日：2005-04-07
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： YOKOHATA KAZUNORI , IMAMURA KOICHIRO , SHIBUYA KAZUHIKO
IPC分类号： H04J11/00
摘要： PROBLEM TO BE SOLVED: To provide pilot signal detection technology capable of reducing the scale of hardware and the amount of computation required for detecting a pilot signal.
SOLUTION: An apparatus for detecting the pilot signal includes: an FFT means 301 for transforming an OFDM signal into a carrier symbol being a signal in a frequency region; a carrier symbol power summation section 302 that calculates total power of carrier symbols at positions of pilot signals of each of a plurality of pilot signal arrangement patterns with respect to one OFDM symbol, and a maximum value discrimination/pattern detection section 303 for detecting the pilot signal arrangement pattern from which the highest power is obtained among the total power of the carrier symbols at the positions of the pilot signals in each pilot signal arrangement pattern.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供能够降低硬件规模和检测导频信号所需的计算量的导频信号检测技术。解决方案：用于检测导频信号的装置包括：FFT装置301，用于将OFDM信号变换为频域中的信号的载波符号; 载波符号功率求和部分302，其针对一个OFDM符号计算多个导频信号布置模式中的每一个的导频信号的位置处的载波符号的总功率;以及用于检测导频的最大值鉴别/模式检测部分303 在每个导频信号排列模式中的导频信号的位置处的载波符号的总功率之间获得最大功率的信号排列模式。版权所有（C）2007，JPO＆INPIT

46. 发明专利

JP2006140938A Delay profile measuring device, method, and program 有权
标题翻译：延迟配置测量设备，方法和程序
公开(公告)号：JP2006140938A
公开(公告)日：2006-06-01
申请号：JP2004330865
申请日：2004-11-15
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： IMAMURA KOICHIRO , SHIBUYA KAZUHIKO
IPC分类号： H04J11/00
摘要： PROBLEM TO BE SOLVED: To accurately measure a delay profile from an observation signal, even if the observation signal includes interferences, such as interferences among symbols or interferences among carriers. SOLUTION: An equalization part 2 of a delay profile measuring device 1 inputs the observation signal, to equalize waveform distortion by multipath included in the signal. A coefficient calculation part 3 inputs a signal after the equalization, carries out an operation of an equalization residue of the transfer function of a propagation path and a transfer function of the equalization part 2, calculates a new coefficient of the equalization part 2 to make the transfer function of the equalization part 2 equal to an reciprocal number of the transfer function of the propagation path by using the equalization residue, and outputs the calculated coefficient at the equalization part 2 and a delay profile display part 4. The delay profile display part 4 inputs the coefficient, calculates the delay profile from the transfer function of the equalization part 2, and displays it. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：即使观测信号包括诸如符号间的干扰或载波之间的干扰的干扰，也能够精确地测量来自观测信号的延迟分布。解决方案：延迟分布测量装置1的均衡部分2输入观测信号，以通过包括在信号中的多径来平衡波形失真。系数计算部3输入均衡后的信号，执行均衡部2的传播路径的传递函数的均衡余量和传递函数的运算，计算均衡部2的新系数，均衡部分2的传递函数等于通过使用均衡残差的传播路径的传递函数的倒数，并且在均衡部分2和延迟分布显示部分4输出所计算的系数。延迟分布显示部分4 输入系数，根据均衡部分2的传递函数计算延迟分布，并显示它。版权所有（C）2006，JPO＆NCIPI

47. 发明专利

JP2004343546A Ofdm signal demodulator 有权
公开(公告)号：JP2004343546A
公开(公告)日：2004-12-02
申请号：JP2003139258
申请日：2003-05-16
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： IMAMURA KOICHIRO , SHIBUYA KAZUHIKO , HAMAZUMI HIROYUKI , TAKEUCHI TOMOAKI
IPC分类号： H04J11/00 , H04B1/10
摘要： PROBLEM TO BE SOLVED: To provide an OFDM signal demodulator for equalizing a multipath exceeding a guard interval, and capable of immediately following up variation in multipaths to demodulate properly an OFDM signal, even if there is a large variation in the multipaths.
SOLUTION: The OFDM signal demodulator comprises a window processing means 14, a frequency characteristic equalizing means 16, a symbol extracting means 17, and a component filtering out means 18. The window processing means 14 conducts window processing so that not only effective symbols to be demodulated but also effective symbols existing in a time axis before and after the effective symbols to be demodulated are included in a time window. The frequency characteristic equalizing means 16 equalizes a multipath which arrives early in time and a multipath which arrives late in time. The symbol extracting means 17 extracts frequency characteristics of the effective symbols to be demodulated. The component filtering-out means 18 filters out frequency components other than quadrature frequency component for the effective symbols to be demodulated.
COPYRIGHT: (C)2005,JPO&NCIPI

48. 发明专利

JP2014241475A 送信装置、受信装置、及びプログラム审中-公开
标题翻译：传输设备，接收设备和程序
公开(公告)号：JP2014241475A
公开(公告)日：2014-12-25
申请号：JP2013122616
申请日：2013-06-11
申请人：日本放送協会 , Nippon Hoso Kyokai
发明人： SHITOMI TAKUYA , MURAYAMA KENICHI , TAGUCHI MAKOTO , ASAKURA SHINGO , SHIBUYA KAZUHIKO
IPC分类号： H04J99/00 , H04B7/04 , H04J11/00
摘要：【課題】MIMOシステムにおいて、特定の系統のOFDM信号が通過する伝送路のみの特性が悪くなるような場合に、MIMOシステム全体の特性劣化を軽減する。【解決手段】送信装置1は、送信信号にキャリア変調を施してIQ平面へのマッピングを行い、変調信号を生成するマッピング部11と、変調信号をIQ平面上で回転させるコンスタレーション回転部12と、回転後の各変調信号のIデータ及びQデータを、k本の送信アンテナのうちそれぞれ異なる送信アンテナから送信されるようにk系統に分割する分割部13と、分割後の変調信号を用いてOFDMフレームを構成するOFDMフレーム構成部15と、キャリアシンボルを逆フーリエ変換した信号に、ガードインターバルを付加したOFDM信号をk系統生成し、k本の送信アンテナにそれぞれ出力する出力処理部16と、を備える。【選択図】図1
摘要翻译：要解决的问题：在MIMO系统中，仅在特定系统的OFDM信号的传输线中的属性劣化的情况下，为了减少整个MIMO系统的属性劣化。解决方案：传输线1包括：映射部分11，通过对传输信号执行载波调制来执行映射到IQ平面，并产生调制信号; 星座旋转部分12，其使IQ平面上的调制信号旋转; 分割部分13，其将旋转的调制信号的I数据和Q数据分解为（k）系统，以便从（k）个发射天线中的不同发送天线发送I数据和Q数据; OFDM帧构成部15，其通过使用分频调制信号构成OFDM帧; 以及输出处理部16，其通过对通过对载波符号进行逆傅里叶变换获得的信号添加保护间隔来生成（k）OFDM信号的系统，并将OFDM信号分别输出到（k）个发送信号。

49. 发明专利

JP2014116872A Multicarrier modulated signal receiver 有权
标题翻译： MULTICARRIER调制信号接收器
公开(公告)号：JP2014116872A
公开(公告)日：2014-06-26
申请号：JP2012270958
申请日：2012-12-12
申请人： Nippon Hoso Kyokai , 日本放送協会 , Nhk Engineering System Inc , 一般財団法人Nhkエンジニアリングシステム
发明人： TAKEUCHI TOMOAKI , SAITO MASANORI , SHIBUYA KAZUHIKO
IPC分类号： H04J11/00 , H03M13/45
摘要： PROBLEM TO BE SOLVED: To provide a multicarrier modulated signal receiver of which the correction function by error correction decoding can be effectively utilized without estimating propagation path characteristics, and which has bit error resistance.SOLUTION: A multicarrier modulated signal receiver 1-1 comprises: an analysis bank 5 which substantially operates at a rate of twice of the maximum thinning rate; a linear equalizer 6; an equalization coefficient calculation part 7; a logarithmic likelihood ratio calculation part 8; and an error correction decoding part 9. The logarithmic likelihood ratio calculation part 8 comprises a transmission path reliability calculation part 55 and a subtractor 56 which calculate transmission path reliability from an equalization coefficient, and calculates a logarithmic likelihood ratio by using an error of a carrier symbol after equalization and the transmission path reliability. The transmission path reliability calculation part 55 calculates amplitudes of four systems of equalization coefficients from the equalization coefficient calculation part 7 for every tap, adds the amplitudes among the four systems, and normalizes the equalization coefficients so that an average of all subcarriers becomes 1 for addition results. The subtractor 56 subtracts the amplitude sum of the normalized equalization coefficients from a constant 2 and calculates the transmission path reliability.
摘要翻译：要解决的问题：提供一种多载波调制信号接收机，其中可以有效地利用误差校正解码的校正功能，而不估计传播路径特性，并具有误码阻抗。解码：多载波调制信号接收机1-1包括：分析库5，其基本上以最大稀疏率的两倍的速率运行; 线性均衡器6; 均衡系数计算部7; 对数似然比计算部8; 对数似然比计算部分8包括传输路径可靠性计算部分55和从均衡系数计算传输路径可靠性的减法器56，并且通过使用载波的误差来计算对数似然比均衡后的符号和传输路径可靠性。传输路径可靠性计算部分55从每个抽头的均衡系数计算部分7计算四个均衡系统系统的幅度，将四个系统之间的振幅相加，并且对均衡系数进行归一化，使得所有子载波的平均值变为1以用于加法结果。减法器56从常数2中减去归一化均衡系数的幅度和，并计算传输路径的可靠性。

50. 发明专利

JP2014096790A Transmitter, receiver, and program 有权
标题翻译：发射机，接收机和程序
公开(公告)号：JP2014096790A
公开(公告)日：2014-05-22
申请号：JP2013211377
申请日：2013-10-08
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： ASAKURA SHINGO , MURAYAMA KENICHI , TAGUCHI MAKOTO , SHITOMI TAKUYA , SHIBUYA KAZUHIKO
IPC分类号： H04J11/00 , H04B1/04 , H04J99/00
CPC分类号： H04B7/0684 , H04L5/0048 , H04L27/2626
摘要： PROBLEM TO BE SOLVED: To suppress deterioration of transmission characteristics due to the same channel interference.SOLUTION: A transmitter 1 includes: a mapping part 13 which generates a carrier modulation signal by mapping a transmission signal to an IQ plane in accordance with a predetermined modulation method for each subcarrier; an output processing part 16 which generates an OFDM (Orthogonal Frequency Division Multiplexing) signal by performing insertion of a pilot signal, reverse Fourier transformation, and addition of guard interval to the carrier modulation signal; and a transmission timing adjustment part 17 which adjusts transmission timing of the OFDM signal. The transmission timing adjustment part 17 provides time difference so that the transmission timing of the pilot signal does not match an OFDM signal from a station other than the desired station which has the same OFDM symbol length, arrangement of the pilot signal, and code sequence of the pilot signal, and a different data signal.
摘要翻译：要解决的问题：抑制由于相同的信道干扰导致的传输特性的恶化。解决方案：发射机1包括：映射部分13，其通过根据预定调制将传输信号映射到IQ平面来生成载波调制信号每个子载波的方法; 输出处理部16，其通过执行导频信号的插入，逆傅立叶变换和对载波调制信号的保护间隔的相加来生成OFDM（正交频分复用）信号; 以及调整OFDM信号的发送定时的发送定时调整部17。发送定时调整部17提供时差，使得导频信号的发送定时与来自除了具有相同的OFDM符号长度，导频信号的配置和导频信号的配置的期望的站之外的站的OFDM信号不一致导频信号和不同的数据信号。

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