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1. 发明公开

EP1303094A3 Noise canceling method and apparatus 审中-公开
标题翻译：噪声抑制方法和设备
公开(公告)号：EP1303094A3
公开(公告)日：2006-08-30
申请号：EP02001055.9
申请日：2002-01-21
申请人： FUJITSU LIMITED
发明人： Kaku, Takashi, Fujitsu Limited , Okita, Ryoji, Fujitsu Limited
IPC分类号： H04L27/26 , H04B15/00 , H04B3/54 , H04B1/12 , H04B1/10
CPC分类号： H04L27/2647 , H04B1/1036 , H04B1/12 , H04B1/123 , H04B2203/5425
摘要： A canceling method and apparatus can achieve a fast communication by improving an S/N value by adaptively canceling a noise with respect to a frequency or band having a large noise by selecting noise canceling band in accordance with a condition of noise being generated. A reception signal contains a specific signal having a specified time position, amplitude, and phase. A noise distribution of the specific signal is recognized so as to predict a noise by extracting a frequency band having a larger noise component from a pair of frequencies generated by the insertion of the specific signal. An original transmission signal is reproduced by canceling the predicted noise from the reception signal.

2. 发明公开

EP1306997A1 Error correction device and error correction method 有权
标题翻译： Fehlerkorrekturvorrichtung und -verfahren
公开(公告)号：EP1306997A1
公开(公告)日：2003-05-02
申请号：EP02007285.6
申请日：2002-04-02
申请人： FUJITSU LIMITED
发明人： Kaku, Takashi, Fujitsu Limited , Okita, Ryoji, Fujitsu Limited
IPC分类号： H04L1/20 , H04L27/26 , H04L1/04 , G06F11/10 , H03M13/00
CPC分类号： H03M13/00 , H04L1/0041 , H04L1/0045 , H04L1/0057 , H04L1/0063 , H04L1/20 , H04L2001/0096
摘要： At least one of a plurality of channels is used as an error correction channel. An identification unit calculates the exclusive OR or modulo sum of data items sent on the remaining channels and adopts the calculated exclusive OR or modulo sum as data sent on the error correction channel. An exclusive OR unit calculates the exclusive OR or modulo sum of the identified data items sent on the plurality of channels. A signal quality detection unit detects the signal qualities concerning the plurality of channels. If an output of the exclusive OR unit is a predetermined specific value such as 0, an identifying and processing unit provides the identified data items. If the output of the exclusive OR unit is not the predetermined specific value such as 0, the identifying and processing unit replaces the identified data, which is sent on the channel whose signal quality is detected to be the worst by the signal quality detection unit, with the exclusive OR or modulo sum of the identified data items sent on the channels other than the channel whose signal quality is the worst. The identifying and processing unit then provides the resultant data.
摘要翻译：多个通道中的至少一个被用作纠错通道。识别单元计算在剩余信道上发送的数据项的异或或模数和，并将所计算的异或或模和作为在纠错信道上发送的数据。异或单元计算在多个信道上发送的识别的数据项的异或或模和。信号质量检测单元检测关于多个信道的信号质量。如果异或单元的输出是诸如0的预定特定值，则识别和处理单元提供所识别的数据项。如果异或单元的输出不是诸如0的预定特定值，则识别和处理单元将信号质量被检测到的信道上发送的识别数据替换为信号质量检测单元是最差的，在信道质量最差的信道以外的信道上发送的识别数据项的异或或模数和。识别和处理单元然后提供所得到的数据。

3. 发明公开

EP1271867A3 Equalization in the presence of intermittent fluctuations in the characteristic of a transmission line 审中-公开
标题翻译：均衡用于在传输线的特性波动的间歇
公开(公告)号：EP1271867A3
公开(公告)日：2007-05-16
申请号：EP01124363.1
申请日：2001-10-23
申请人： FUJITSU LIMITED
发明人： Kaku, Takashi, Fujitsu Limited , Okita, Ryoji, Fujitsu Limited
IPC分类号： H04L25/03
CPC分类号： H04L25/03006
摘要： An equalisation method is provided, which detects intermittent changes in the characteristics of a transmission line. Such changes might, for example, be caused by the switching on or off household electrical devices.

4. 发明授权

EP1306997B1 Error correction device and error correction method 有权
标题翻译：纠错装置和方法
公开(公告)号：EP1306997B1
公开(公告)日：2005-08-24
申请号：EP02007285.6
申请日：2002-04-02
申请人： FUJITSU LIMITED
发明人： Kaku, Takashi, Fujitsu Limited , Okita, Ryoji, Fujitsu Limited
IPC分类号： H04L1/20 , H04L27/26 , H04L1/04 , G06F11/10 , H03M13/00
CPC分类号： H03M13/00 , H04L1/0041 , H04L1/0045 , H04L1/0057 , H04L1/0063 , H04L1/20 , H04L2001/0096

5. 发明公开

EP1271873A3 Interleaving in multicarrier transmission 有权
标题翻译：营巢于多载波传输
公开(公告)号：EP1271873A3
公开(公告)日：2006-05-17
申请号：EP02001041.9
申请日：2002-01-18
申请人： FUJITSU LIMITED
发明人： Kaku, Takashi, Fujitsu Limited , Hirao, Kyoko, Fujitsu Limited
IPC分类号： H04L27/26
CPC分类号： H04L27/2628 , H04L1/0071 , H04L27/2602 , H04L27/2614 , H04L27/265
摘要： A data transmission method comprises the steps of: a) performing two-dimensional interleaving along a time axis and along a frequency axis; b) transmitting the thus-obtained data by a multicarrier transmission form; and c) producing, by channel copy operation, data which is short for the number of channels required for fast inverse Fourier transform performed antecedent and subsequent to said step a).

6. 发明授权

EP1331765B1 Polling communication system and polling control method 有权
标题翻译：通信系统和方法与轮询的控制
公开(公告)号：EP1331765B1
公开(公告)日：2004-12-15
申请号：EP02016246.7
申请日：2002-07-22
申请人： FUJITSU LIMITED
发明人： Kaku, Takashi, Fujitsu Limited , Hirao, Kyoko, Fujitsu Limited
IPC分类号： H04L12/403 , H04B3/54
CPC分类号： H04L12/403 , H04B3/542 , H04B2203/5408 , H04B2203/5425 , H04B2203/5445

7. 发明公开

EP1333608A2 Data transmission system and data transmission method for cable television 审中-公开
标题翻译： DatenübertragungssystemundDatenübertragungsverfahrenfürKabelfernsehen
公开(公告)号：EP1333608A2
公开(公告)日：2003-08-06
申请号：EP02022272.5
申请日：2002-10-04
申请人： FUJITSU LIMITED
发明人： Kaku, Takashi, Fujitsu Limited , Tanaka, Yoshinori, Fujitsu Limited
IPC分类号： H04L1/04
CPC分类号： H04L1/04
摘要： A transmission part (5 or 6) produces a copy of a given narrow-band signal so as to obtain a number of same signals according to predetermined orthogonal sequence, and performs respective phase rotations on the thus-obtained signals according to the present invention orthogonal sequence. A reception part (5 or 6) performs reverse phase rotation on the reception signals according to the predetermined orthogonal sequence, and then performs mutual addition thereon so as to restore the narrow-band signal.
摘要翻译：发送部（5或6）产生给定窄带信号的副本，以便根据预定的正交序列获得多个相同的信号，并且根据本发明对这样获得的信号进行相位旋转正交序列。接收部（5或6）根据预定正交序列对接收信号进行反相旋转，然后在其上执行相互添加，以恢复窄带信号。

8. 发明公开

EP1304843A2 Peak suppression method and data transmission apparatus 有权
标题翻译： SpitzenwertunterdrückungsverfahrenundDatenübertragungsgerät
公开(公告)号：EP1304843A2
公开(公告)日：2003-04-23
申请号：EP01124340.9
申请日：2001-10-22
申请人： FUJITSU LIMITED
发明人： Kaku, Takashi, Fujitsu Limited , Hirao, Kyoko, Fujitsu Limited
IPC分类号： H04L27/26
CPC分类号： H04L27/2624
摘要： A peak suppression method detects a peak value exceeding a threshold value of a transmitting signal, forms a peak value prediction signal which is limited to a noise cancelling frequency band of a receiving end, based on the detected peak value of the transmitting signal, and subtracts the peak value prediction signal from the transmitting signal.
摘要翻译：峰值抑制方法检测超过发送信号的阈值的峰值，基于检测出的发送信号的峰值，形成限制为接收端的噪声消除频带的峰值预测信号，并减去来自发送信号的峰值预测信号。

9. 发明授权

EP1271873B1 Interleaving in multicarrier transmission 有权
标题翻译：营巢于多载波传输
公开(公告)号：EP1271873B1
公开(公告)日：2007-12-05
申请号：EP02001041.9
申请日：2002-01-18
申请人： FUJITSU LIMITED
发明人： Kaku, Takashi, Fujitsu Limited , Hirao, Kyoko, Fujitsu Limited
IPC分类号： H04L27/26
CPC分类号： H04L27/2628 , H04L1/0071 , H04L27/2602 , H04L27/2614 , H04L27/265

10. 发明授权

EP1304843B1 Peak suppression method and data transmission apparatus 有权
标题翻译：峰值抑制方法和通信装置
公开(公告)号：EP1304843B1
公开(公告)日：2007-07-18
申请号：EP01124340.9
申请日：2001-10-22
申请人： FUJITSU LIMITED
发明人： Kaku, Takashi, Fujitsu Limited , Hirao, Kyoko, Fujitsu Limited
IPC分类号： H04L27/26
CPC分类号： H04L27/2624

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