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61. 发明专利

JP2009044354A Terrestrial/satellite broadcast signal converter and transmission system 有权
标题翻译：地面/卫星广播信号转换器和传输系统
公开(公告)号：JP2009044354A
公开(公告)日：2009-02-26
申请号：JP2007205969
申请日：2007-08-07
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： NODA YUKIO , SHIBUYA KAZUHIKO , TSUCHIDA KENICHI , OKANO MASAHIRO , MIYAZAKI OSAMU , TAKADA MASAYUKI , HASHIMOTO AKINORI , NOMOTO TOSHIHIRO , NAKA TAKASHI
IPC分类号： H04B7/155 , H04H20/28 , H04H20/74 , H04N7/173 , H04N21/235 , H04N21/236 , H04N21/238
摘要： PROBLEM TO BE SOLVED: To provide service unique to terrestrial digital broadcast such as one-segment even when content of the terrestrial digital broadcast is distributed utilizing a broadcast satellite. SOLUTION: A T/S converter (terrestrial/satellite broadcast signal converter) 11 is provided with: an IIP detection means 110 for detecting packets including head location information of multiplex frames from stream data of a signal form of the terrestrial digital broadcast to synchronize the packets; an invalid hierarchy removal means 111 for removing packets of invalid hierarchies specified by the signal form of the terrestrial digital broadcast in the multiplex frames; an NIT replacement means 113 for replacing an identifier of a network information table with an identifier specified by a signal form of satellite digital broadcast in the multiplex frames; and a PCR reset means 114 for resetting a program time reference value corresponding to removal of TSPs of the invalid hierarchies by the invalid hierarchy removal means 111. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：即使在使用广播卫星分发地面数字广播的内容的情况下，也提供诸如一段的地面数字广播独特的服务。解决方案：AT / S转换器（地面/卫星广播信号转换器）11具有：IIP检测装置110，用于从地面数字广播的信号形式的流数据检测包括多路复用帧的头位置信息的分组，同步数据包; 用于去除多路复用帧中的地面数字广播的信号形式指定的无效层次的分组的无效分级去除装置111; NIT替换装置113，用于用多路复用帧中的由卫星数字广播的信号形式指定的标识符替换网络信息表的标识符; 以及PCR复位装置114，用于通过无效层级去除装置111复位对应于去除无效层次的TSP的程序时间参考值。（C）版权所有：（C）2009，JPO＆INPIT

62. 发明专利

JP2008244806A Ofdm receiving device 有权
标题翻译： OFDM接收设备
公开(公告)号：JP2008244806A
公开(公告)日：2008-10-09
申请号：JP2007082093
申请日：2007-03-27
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： YAMAZAKI RAITA , SHIBUYA KAZUHIKO , TAKADA MASAYUKI
IPC分类号： H04J11/00 , H04B7/08
摘要： PROBLEM TO BE SOLVED: To provide an OFDM receiving device in which a receiving signal quality degradation effect is reduced that is generated in selecting and switching signals and the number of diversities synthesized is not temporarily decreased and besides dynamic switching is possible.
SOLUTION: In the OFDM receiving device 1, signals become discontinuous in switching the signals by a selecting and switching section 33 of a signal selecting and switching unit 30. A delaying section 36 of the signal selecting and switching unit 30, however, delays the signals and then a diversity synthesizing unit 40 is allowed to perform a synthesizing process by the signals delayed. Further, in the synthesizing process, the diversity synthesizing unit 40 judges that signals of a system different from those of a system presently selected reach after how many symbols have passed and then is allowed to estimate a transmitting path while varying an interpolation process at every symbol. Consequently, a degradation can be reduced which is exercised on signal quality after synthesizing the diversities, thus enabling the dynamic switching without temporarily decreasing the number of the diversities synthesized.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种OFDM接收装置，其中在选择和切换信号中产生的接收信号质量劣化效应降低，并且合成的多样性数量不会暂时减少，并且除了动态切换之外。解决方案：在OFDM接收设备1中，信号选择和切换单元30的选择和切换部分33在信号切换中信号变得不连续。然而，信号选择和切换单元30的延迟部分36，延迟信号，然后允许分集合成单元40通过延迟的信号执行合成处理。此外，在合成处理中，分集合成单元40判断与当前选择的系统不同的系统的信号在经过多少个符号之后到达，然后允许在每个符号改变内插处理的同时估计发送路径。因此，在合成多样性之后可以降低对信号质量进行的劣化，从而能够进行动态切换，而不会暂时减少合成的多样性的数量。版权所有（C）2009，JPO＆INPIT

63. 发明专利

JP2008042855A Mobile receiving apparatus 有权
标题翻译：手机接收装置
公开(公告)号：JP2008042855A
公开(公告)日：2008-02-21
申请号：JP2006218520
申请日：2006-08-10
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： YAMAZAKI RAITA , TAKADA MASAYUKI , HAMAZUMI HIROYUKI
IPC分类号： H04B7/08 , H04B7/10 , H04J1/00 , H04J11/00
摘要： PROBLEM TO BE SOLVED: To provide a mobile receiving apparatus for receiving an OFDM signal without deterioration in compensation accuracy of Doppler shift and without limitation on the number of inputs of a demodulator.
SOLUTION: The mobile receiving apparatus 1 of the ground digital broadcast prepares for a plurality of fixed directivity patterns and achieves synthesis with the maximum ratio by selecting a plurality of signals sequentially from those having larger MER (Modulation Error Ratio) after compensation of the Doppler shift of the synthesized signals obtained from respective directivity patterns. Thereby, mobile receiving characteristics can be improved.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种移动接收装置，用于接收OFDM信号，而不会降低多普勒频移的补偿精度，而不限制解调器的输入数量。解决方案：地面数字广播的移动接收装置1准备多个固定方向性图案，并通过从补偿后的较大MER（调制误差比）的那些顺序地选择多个信号，以最大比率来进行合成从各指向性图案获得的合成信号的多普勒频移。由此，可以提高移动接收特性。版权所有（C）2008，JPO＆INPIT

64. 发明专利

JP2007300337A Mobile receiver 有权
标题翻译：移动接收器
公开(公告)号：JP2007300337A
公开(公告)日：2007-11-15
申请号：JP2006125912
申请日：2006-04-28
申请人： Hitachi Kokusai Electric Inc , Nippon Hoso Kyokai , 日本放送協会 , 株式会社日立国際電気
发明人： YAMAZAKI RAITA , TAKADA MASAYUKI , HAMAZUMI HIROYUKI , TSUCHIDA KENICHI , TAKADA MASATOSHI
IPC分类号： H04B7/10 , H04B7/08 , H04J11/00
摘要： PROBLEM TO BE SOLVED: To further improve reception characteristics of a digital terrestrial broadcasting receiver by compensating a multiple Doppler shift by combining adaptive directivity control and a diversity composition with each other. SOLUTION: When respective incoming waves are extracted from a plurality of incoming waves affected by a Doppler shift caused in a mobile reception environment, an adaptive directivity calculating unit 340 having a directivity control unit 300 compensates the Doppler shift by controlling directivity adaptively by the incoming waves according to convergence conditions calculated by a convergence condition calculating unit 330 and performing AFC. Further, a diversity composing unit 400 performs transmission line estimation after fast Fourier transforming (FFT) the respective incoming waves with the Doppler shift compensated, and then performs maximum ratio composition so that a composite signal of the respective incoming waves has a maximum C/N. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：通过将自适应方向性控制和多样性组合相结合来补偿多普勒频移来进一步提高数字地面广播接收机的接收特性。解决方案：当从在移动接收环境中引起的多普勒频移影响的多个入射波中提取各个输入波时，具有方向性控制单元300的自适应方向性计算单元340通过自适应地控制方向性来补偿多普勒频移根据收敛条件计算单元330计算的收敛条件并执行AFC的入射波。此外，分集合成单元400在利用多普勒频移补偿的各个输入波进行快速傅立叶变换（FFT）之后进行传输线估计，然后执行最大比组合，使得各个入波的复合信号具有最大的C / N 。版权所有（C）2008，JPO＆INPIT

65. 发明专利

JP2003051802A Digital reception system 审中-公开
标题翻译：数字接收系统
公开(公告)号：JP2003051802A
公开(公告)日：2003-02-21
申请号：JP2001238159
申请日：2001-08-06
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： TAKADA MASAYUKI , KIMURA SATOSHI , MORIYAMA SHIGEKI
IPC分类号： H04J11/00
摘要： PROBLEM TO BE SOLVED: To provide a digital reception system that can obtain excellent reception characteristics even under an environment with multi-path fading such as in a mobile reception environment particularly even in the case of the mode 3 mobile reception.
SOLUTION: In the digital reception system of this invention, a receiver for receiving an OFDM-modulated transmission signal of a digital transmission system is provided with a means 108 that detects the frequency characteristics of a signal received by the receiver to apply frequency band equalization to the signal and with a time band equalization means 110 that detects the amplitude phase characteristics in a symbol from the frequency band equalization signal and corrects them. The receiver applies the frequency band equalization to the received signal, then applies time band equalization and applies FFT processing to the resulting signal after that to demodulate the signal.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：即使在移动接收环境中甚至在模式3移动接收的情况下，即使在具有多路径衰落的环境下也能够获得优异的接收特性的数字接收系统。解决方案：在本发明的数字接收系统中，用于接收数字传输系统的OFDM调制传输信号的接收机设置有检测由接收机接收的信号的频率特性以应用频带均衡的装置108 信号和时间带均衡装置110，其从频带均衡信号中检测符号中的振幅相位特性并校正它们。接收机对接收到的信号应用频带均衡，然后施加时间带均衡，并对其后的结果进行FFT处理，以解调信号。

66. 发明专利

JP2003051768A Diversity receiver 有权
标题翻译：多样性接收者
公开(公告)号：JP2003051768A
公开(公告)日：2003-02-21
申请号：JP2001238158
申请日：2001-08-06
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： TAKADA MASAYUKI , KIMURA SATOSHI , ISO NAOHIKO , TSUCHIDA KENICHI , MORIYAMA SHIGEKI
IPC分类号： H04B7/08 , H04J11/00 , H04N5/44
摘要： PROBLEM TO BE SOLVED: To provide a diversity receiver that has a reduced circuit scale and is costwise advantageous.
SOLUTION: The diversity receiver for applying diversity reception to a transmission signal in a digital transmission system subjected to OFDM(orthogonal frequency division multiplexing) modulation is provided with a transmission feature detection means 114 that utilizes a guard interval of a received signal by the receiver to detect transmission features of a plurality of the input signals, a comparison means 116 that compares the transmission features of a plurality of the input signals with each other, and a changeover means 108 that selects a plurality of the input signals depending on the comparison results by the comparison means 116. The receiver switches a plurality of the input signals depending on the transmission features and applies FFT(fast Fourier transform) processing to the selected input signal to demodulate it.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供具有减小的电路规模并且具有成本优势的分集接收机。解决方案：在经受OFDM（正交频分复用）调制的数字传输系统中对传输信号进行分集接收的分集接收机设置有传输特征检测装置114，其利用接收机接收的信号的保护间隔检测多个输入信号的传输特征，比较装置116，其将多个输入信号的传输特征彼此进行比较;以及切换装置108，其根据比较结果选择多个输入信号，比较装置116.接收机根据传输特征切换多个输入信号，并对所选择的输入信号执行FFT（快速傅里叶变换）处理以对其进行解调。

67. 发明专利

JP2975932B1 失效
公开(公告)号：JP2975932B1
公开(公告)日：1999-11-10
申请号：JP19392798
申请日：1998-07-09
申请人： NIPPON HOSO KYOKAI , JISEDAI DEJITARU TEREBIJON HOSO SHISUTEMU KENKYUSHO KK
发明人： UEHARA MICHIHIRO , TAKADA MASAYUKI , TSUCHIDA KENICHI , KURODA TOORU , IKEDA TETSUOMI , OKAMURA HIROAKI , SAITO MASANORI
IPC分类号： H04J11/00 , H04J3/00 , H04L12/70

68. 发明专利

JP2904986B2 失效
公开(公告)号：JP2904986B2
公开(公告)日：1999-06-14
申请号：JP1706792
申请日：1992-01-31
申请人： NIPPON HOSO KYOKAI
发明人： SAITO MASANORI , KURODA TOORU , MORYAMA SHIGEKI , SAITO TOMOHIRO , TAKADA MASAYUKI , YAMADA TSUKASA
IPC分类号： H04J1/20 , H04J11/00 , H04J99/00 , H04L27/26
摘要： A digital signal transmission using OFDM modulation scheme in which the valid transmission data can be reproduced without requiring a recovery of the carriers at a receiver side. On a transmitter side, the transmission data sequence in which predetermined reference data for each carrier are placed among valid transmission data is modulated according to an orthogonal frequency division multiplexing (OFDM) modulation scheme using a plurality of carriers and obtained OFDM transmission signals are transmitted. On a receiver side, the received OFDM transmission signals are demodulated to obtain received data sequence containing valid received data and received reference data, and the valid transmission data are estimated from the received data sequence according to the valid received data, the received reference data, and the predetermined reference data for each carrier.

69. 发明专利

JP2857300B2 失效
公开(公告)号：JP2857300B2
公开(公告)日：1999-02-17
申请号：JP11945993
申请日：1993-05-21
申请人： NIPPON HOSO KYOKAI
发明人： KURODA TOORU , TAKADA MASAYUKI , ISOBE TADASHI , YAMADA TSUKASA
IPC分类号： H04B1/16

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