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1. 发明专利

JP2000236313A QUADRATURE FREQUENCY DIVISION MULTIPLEX TRANSMISSION SYSTEM, TRANSMISSION EQUIPMENT AND RECEPTION EQUIPMENT THEREFOR 失效
公开(公告)号：JP2000236313A
公开(公告)日：2000-08-29
申请号：JP2000006857
申请日：2000-01-14
申请人： JISEDAI DIGITAL TELE HOSO SYS , MATSUSHITA ELECTRIC IND CO LTD , JAPAN BROADCASTING CORP
发明人： KIMURA TOMOHIRO , HAYASHI KENICHIRO , KISODA AKIRA , SOGA SHIGERU , KAGEYAMA TEIJI , SAITO MASANORI , ISHIKAWA TATSUYA , MORI HITOSHI , TAKADA MASAYUKI , KURODA TORU , SASAKI MAKOTO
IPC分类号： H04J11/00 , H04L25/02 , H04L27/26
摘要： PROBLEM TO BE SOLVED: To provide demodulation with high quality and demodulation suitable for mobile reception. SOLUTION: A received OFDM signal is transformed from the time domain to the frequency domain by Fourier transformation 12, and a vector array for each carrier in the frequency domain is provided. Required dispersion and terminal pilot signals are extracted from the vector array 13, transmission line characteristics related to the dispersion/terminal pilot signals are estimated by dividing them with a modulated complex vector 15, and transmission line characteristics related to the information transmission carrier of a segment for synchronous detection are estimated by interpolating these transmission line characteristics 16. Meantime, the vector array provided by Fourier transformation is delayed by one symbol 17, an interpolated output is selected in the case of segment for synchronous detection, but a delayed output is selected in the case of segment for differential detection 18, the synchronous detection or differential detection is performed 19 by dividing the vector array by the selected output and additional information and digital information are provided 20 by demodulation 20.

2. 发明专利

JPH1022973A OFDM TRANSMISSION SYSTEM AND ITS TRANSMISSION/RECEPTION DEVICE 失效
公开(公告)号：JPH1022973A
公开(公告)日：1998-01-23
申请号：JP17117996
申请日：1996-07-01
申请人： JISEDAI DIGITAL TELE HOSO SYS , TOSHIBA CORP
发明人： SEKI TAKASHI , ISHIKAWA TATSUYA , SAWADA KENJI , SAITO MASANORI , IKEDA TETSUOMI , SUGITA YASUSHI
IPC分类号： H04L27/34 , H04J11/00 , H04L27/18
摘要： PROBLEM TO BE SOLVED: To eliminate the need for transmitting plural kinds of synchronous symbols and to improve transmission efficiency by validating only every Nmax / Nmin carriers in Nmax -pieces of carriers on a reference symbol. SOLUTION: In the format of the frame of OFDM transmission data, every Nmax /Nmin =8 carriers are set to be effective carriers for the reference symbol when the number Nmax of the samples of a fixed reception is 8192 and the number Nmin of the samples of the symbol for movement reception is 1024. Only every eight carriers with DC as the center in whole carriers (5696 carriers) are used as the valid carriers. Thus, 1024 samples are extracted from the valid symbol period of the reference symbol and the reference symbol is demodulated by using the discrete Fourier transformation of 1024 points.

3. 发明专利

JPH10107865A HIERARCHICAL TRANSMISSION SYSTEM AND TRANSMITTER-RECEIVER THEREFOR 失效
公开(公告)号：JPH10107865A
公开(公告)日：1998-04-24
申请号：JP26086996
申请日：1996-10-01
申请人： JISEDAI DIGITAL TELE HOSO SYS , TOSHIBA CORP
发明人： ISHIKAWA TATSUYA , HARADA KEISUKE , TANABE RUMI
IPC分类号： H03M7/30 , H03M13/27 , H04L27/18 , H04L27/34 , H03M13/22
摘要： PROBLEM TO BE SOLVED: To provide a hierarchical transmission system in which an interleave circuit is used in common and the distance of interleave is made longer as to a hierarchy small in multi-valued level. SOLUTION: When input data are 16QAM, data of 4-bit per one symbol are fed to a selection circuit 15 via a path B, where required data are selected, the selected data are de-interleaved for each symbol by a de-interleave circuit 52 and required processed-data are selected by a selection circuit 53 and fed to a forward error correction(FEC) decoder 54. When input data are quadrature phase shift keying(QPSK) data, data of 2-bit per symbol passes through a path A, latched partly in a latch circuit 56 via a switch 55 and outputted in pairs with an output at a side of a through-path 57. Each output of the through-path 57 and the latch circuit 56 is a 2-bit output and both data are 4-bit data (2-symbol) in total and fed to the selection circuit 51 and the data are processed afterward similarly to the case with the 16QAM data.

4. 发明专利

DE2746112A1 未知
公开(公告)号：DE2746112A1
公开(公告)日：1978-04-20
申请号：DE2746112
申请日：1977-10-13
申请人： MATSUSHITA ELECTRIC IND CO LTD , LION DENTIFRICE CO LTD
发明人： ISHIKAWA TATSUYA , KURIYAMA SUMIO , TAKAESU YOSHINORI , FURUISHI HARUHISA , OKUZAKI YOSHIO , MOTOMURA SEIICHI , MUSHA YOSHINORI
IPC分类号： A61C19/06 , A61N1/32 , A61N1/44
摘要： In order to electrically apply fluoride by means of iontophoresis on a tooth an intermittent direct current is made to flow through the tooth. More particularly, the intermittent direct current has a waveform whose leading edge immediately rises to a peak and which decreases exponentially in time. As a result electrochemical polarization may be avoided and the ratio of the current conduction time to the repetition period may be increased so that the uptake efficiency of fluoride by the tooth may be considerably improved in a smooth manner without the need of impressing an excessive current on the tooth. Therefore adverse effects on nerve systems may be avoided, a patient under treatment feels no pain and no unpleasant stimulus, and the tooth's substance may be so improved as to be free from dental caries or decay.

5. 发明专利

JPH04297112A DIGITAL VSB DEMODULATOR 失效
公开(公告)号：JPH04297112A
公开(公告)日：1992-10-21
申请号：JP20820091
申请日：1991-08-20
申请人： TOSHIBA CORP , JAPAN BROADCASTING CORP
发明人： TAKAHASHI YASUO , ISHIKAWA TATSUYA , AOKI TOSHIRO , MIKI NOBUYUKI , HAMADA MASATOSHI , HASHIMOTO YASUHIRO , KAMIOKA KENJI , KAWAI NOBUHIKO
IPC分类号： H03C1/00 , H03C1/60 , H04L27/04
摘要： PURPOSE:To generate a VSB modulation signal with simple construction by generating and adding a carrier wave in phase component and a carrier wave orthogonal component from a digitized base band signal. CONSTITUTION:A digitized base band signal is multiplied 12 by a modulation index (k) and distributed 13. One is distributed 15 through an LPF 14, and the other is delayed 17, one output of the circuit 15 is subtracted 16, a fixed coefficient 0.5 is multiplied 18 and distributed 19. One output of the circuit 19 is orthogonally converted 20 and multiplied 27 by sin2pifct. The other output of the circuit 19 is delayed 21 and added 22 with the other output of the circuit 15. Further, a constant '1' is added 24 and a cos2pifct is multiplied 25. The result of multiplication 27 becomes a carrier wave orthogonal component, and cos2pifctXsin2pifct becomes a half of the spectrum level of an original base band signal, and each multiplication result is added 26.

6. 发明专利

JP2005312082A Transmitting method, receiving method, transmitting apparatus and receiving apparatus 有权
标题翻译：发送方法，接收方法，发送装置和接收装置
公开(公告)号：JP2005312082A
公开(公告)日：2005-11-04
申请号：JP2005175401
申请日：2005-06-15
申请人： Matsushita Electric Ind Co Ltd , Nippon Hoso Kyokai , 日本放送協会 , 松下電器産業株式会社
发明人： KIMURA TOMOHIRO , HAYASHI KENICHIRO , KISODA AKIRA , SOGA SHIGERU , KAGEYAMA TEIJI , SAITO MASANORI , ISHIKAWA TATSUYA , MORI HITOSHI , TAKADA MASAYUKI , KURODA TORU , SASAKI MAKOTO
IPC分类号： H04J11/00 , H04L25/02 , H04L27/26
CPC分类号： H04L25/0204 , H04L27/2647
摘要： PROBLEM TO BE SOLVED: To realize high-quality demodulation and demodulation suitable for mobile reception. SOLUTION: Received OFDM signals are transformed from a time domain to a frequency domain by Fourier transformation (12) to generate a vector sequence of each carrier wave in the frequency domain. Necessary dispersion pilot signals and termination pilot signals are extracted (13) from the vector sequence and divided (15) by a modulation complex vector to estimate transmission line characteristics relative to the dispersion/termination pilot signals, and the transmission line characteristics are interpolated (16) to estimate transmission line characteristics relative to the information transmission carrier wave of a synchronous detection segment. On the other hand, the vector sequence obtained by Fourier transformation is delayed (17) by one symbol. The interpolation output is selected (18) in the case of the synchronous detection segment, and the delay output is selected (18) in the case of a differential detection segment. The vector sequence is divided (19) by the selected output, and the result is subjected to synchronous detection or differential detection and demodulated (20) to generate additional information and digital information. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：实现适合移动接收的高质量解调和解调。解决方案：通过傅里叶变换（12）将接收的OFDM信号从时域变换到频域，以产生频域中每个载波的矢量序列。从矢量序列提取必要的色散导频信号和终止导频信号（13），并通过调制复数向量（15）来估计相对于色散/终止导频信号的传输线特性，并将传输线特性进行内插（16 ）来估计相对于同步检测段的信息传输载波的传输线特性。另一方面，通过傅里叶变换获得的矢量序列被延迟（17）一个符号。在同步检测段的情况下选择插值输出（18），并且在差分检测段的情况下选择延迟输出（18）。矢量序列被所选择的输出分成（19），结果进行同步检测或差分检测并解调（20）以产生附加信息和数字信息。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2008113471A Receiving method, and receiving apparatus 有权
标题翻译：接收方法和接收装置
公开(公告)号：JP2008113471A
公开(公告)日：2008-05-15
申请号：JP2008024593
申请日：2008-02-04
申请人： Matsushita Electric Ind Co Ltd , Nippon Hoso Kyokai , 日本放送協会 , 松下電器産業株式会社
发明人： KIMURA TOMOHIRO , HAYASHI KENICHIRO , KISODA AKIRA , SOGA SHIGERU , KAGEYAMA TEIJI , SAITO MASANORI , ISHIKAWA TATSUYA , MORI HITOSHI , TAKADA MASAYUKI , KURODA TORU , SASAKI MAKOTO
IPC分类号： H04J11/00 , H04L25/02 , H04L27/26
CPC分类号： H04L25/0204 , H04L27/2647
摘要： PROBLEM TO BE SOLVED: To realize high quality demodulation and demodulation suitable for mobile reception. SOLUTION: Received OFDM signals are transformed from a time domain into a frequency domain by Fourier transformation (12) to generate a vector sequence of each carrier wave in the frequency domain. Necessary dispersion pilot signals and termination pilot signals are extracted (13) from the vector sequence and divided (15) by a modulation complex vector to estimate transmission line characteristics relative to the dispersion/termination pilot signals, and the transmission line characteristics are interpolated (16) to estimate transmission line characteristics relative to the information transmission carrier wave of a synchronous detection segment. The vector sequence obtained by Fourier transformation is delayed (17) by one symbol, on the other hand. The interpolation output is selected (18) in the case of the synchronous detection segment, and the delay output is selected (18) in the case of a differential detection segment. The vector sequence is divided (19) by the selected output, and the result is subjected to synchronous detection or differential detection and demodulated (20) to generate additional information and digital information. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：实现适合移动接收的高质量解调和解调。解决方案：通过傅立叶变换（12）将接收的OFDM信号从时域变换为频域，以产生频域中每个载波的矢量序列。从矢量序列提取必要的色散导频信号和终止导频信号（13），并通过调制复数向量（15）来估计相对于色散/终止导频信号的传输线特性，并将传输线特性进行内插（16 ）来估计相对于同步检测段的信息传输载波的传输线特性。另一方面，通过傅里叶变换获得的矢量序列被延迟（17）一个符号。在同步检测段的情况下选择插值输出（18），并且在差分检测段的情况下选择延迟输出（18）。矢量序列被所选择的输出分成（19），结果进行同步检测或差分检测并解调（20）以产生附加信息和数字信息。版权所有（C）2008，JPO＆INPIT

8. 发明专利

JP2005304082A Transmission method, reception method, transmitter, and receiver 有权
标题翻译：传输方法，接收方法，发射机和接收机
公开(公告)号：JP2005304082A
公开(公告)日：2005-10-27
申请号：JP2005175400
申请日：2005-06-15
申请人： Matsushita Electric Ind Co Ltd , Nippon Hoso Kyokai , 日本放送協会 , 松下電器産業株式会社
发明人： KIMURA TOMOHIRO , HAYASHI KENICHIRO , KISODA AKIRA , SOGA SHIGERU , KAGEYAMA TEIJI , SAITO MASANORI , ISHIKAWA TATSUYA , MORI HITOSHI , TAKADA MASAYUKI , KURODA TORU , SASAKI MAKOTO
IPC分类号： H04J11/00 , H04L25/02 , H04L27/26
CPC分类号： H04L25/0204 , H04L27/2647
摘要： PROBLEM TO BE SOLVED: To realize high-quality demodulation and demodulation which is suitable for mobile reception. SOLUTION: Received OFDM signals are transformed from time domain into frequency domain by Fourier transformation (12), and generate a vector sequence for each carrier wave in the frequency domain is obtained. Necessary dispersion pilot signals and termination pilot signals are extracted (13) from the vector sequence and divided (15) by a modulation complex vector to estimate transmission line characteristics, relative to the dispersion/termination pilot signals; and the transmission line characteristics are interpolated (16), to estimate transmission line characteristics relative to the information transmission carrier wave of a synchronous detecting segment. The vector sequence obtained by Fourier transformation, however, is delayed (17) by one symbol. The interpolation output is selected (18) in the case of the synchronous detection segment, and the delay output is selected (18) in the case of a differential detection segment. The vector sequence is divided (19) by the selected output, and the result is subjected to synchronous detection or differential detection and is demodulated (20), to obtain additional information and digital information. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：实现适合于移动接收的高质量解调和解调。解决方案：通过傅里叶变换（12）将接收到的OFDM信号从时域变换为频域，得到频域中每个载波的矢量序列。从矢量序列提取必要的色散导频信号和终止导频信号（13），并用调制复数向量（15），相对于色散/终止导频信号来估计传输线路特性; 并且传输线特性被内插（16），以估计相对于同步检测段的信息传输载波的传输线特性。然而，通过傅里叶变换获得的矢量序列被延迟（17）一个符号。在同步检测段的情况下选择插值输出（18），并且在差分检测段的情况下选择延迟输出（18）。矢量序列被所选择的输出分成（19），结果进行同步检测或差分检测，并进行解调（20），以获得附加信息和数字信息。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JPS5347192A DEVICE FOR INTRODUCING FLUORINE ION TO TOOTH 失效
公开(公告)号：JPS5347192A
公开(公告)日：1978-04-27
申请号：JP12194976
申请日：1976-10-13
申请人： MATSUSHITA ELECTRIC IND CO LTD , LION DENTIFRICE CO LTD
发明人： ISHIKAWA TATSUYA , KURIYAMA SUMIO , TAKAESU YOSHITOMO , FURUISHI HARUHISA , OKUZAKI YOSHIO , MOTOMURA SEIICHI , MUSHIYA YOSHINORI
IPC分类号： A61C19/06 , A61N1/32

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