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1. 发明申请

US20080304587A1 Ofdm Reception Device 失效
标题翻译： Ofdm接收设备
公开(公告)号：US20080304587A1
公开(公告)日：2008-12-11
申请号：US11793527
申请日：2005-12-21
申请人： Koji Setoh , Ippei Kanno , Akira Kisoda , Daisuke Hayashi , Ryosuke Mori , Tetsuya Yagi , Noritaka Iguchi
发明人： Koji Setoh , Ippei Kanno , Akira Kisoda , Daisuke Hayashi , Ryosuke Mori , Tetsuya Yagi , Noritaka Iguchi
IPC分类号： H04L27/28 , H04L27/06 , H04L25/08 , H03D1/06
CPC分类号： H04L27/2662 , H04L27/2678
摘要： An OFDM reception device detects a time at which impulse noise occurs in a received OFDM signal, and specifies a start position candidate period that does not have intersymbol interference and is estimated to have a guard interval signal in a symbol. When setting a FFT window of an effective symbol length in a symbol duration of each symbol, if the impulse noise occurrence time is included in the symbol, the OFDM reception device determines a start position of the FFT window within a range of the start position candidate period so as to exclude the impulse noise occurrence time as much as possible.
摘要翻译： OFDM接收装置检测接收的OFDM信号中出现脉冲噪声的时间，并指定不具有码间干扰的开始位置候补周期，并且估计出具有符号中的保护间隔信号。当在每个符号的符号持续时间中设置有效符号长度的FFT窗口时，如果脉冲噪声发生时间包括在符号中，则OFDM接收装置在开始位置候选的范围内确定FFT窗口的开始位置以便尽可能地排除脉冲噪声发生时间。

2. 发明授权

US07991058B2 OFDM reception device 失效
标题翻译： OFDM接收装置
公开(公告)号：US07991058B2
公开(公告)日：2011-08-02
申请号：US11793527
申请日：2005-12-21
申请人： Koji Setoh , Ippei Kanno , Akira Kisoda , Daisuke Hayashi , Ryosuke Mori , Tetsuya Yagi , Noritaka Iguchi
发明人： Koji Setoh , Ippei Kanno , Akira Kisoda , Daisuke Hayashi , Ryosuke Mori , Tetsuya Yagi , Noritaka Iguchi
IPC分类号： H04L27/28
CPC分类号： H04L27/2662 , H04L27/2678
摘要： An OFDM reception device detects a time at which impulse noise occurs in a received OFDM signal, and specifies a start position candidate period that does not have intersymbol interference and is estimated to have a guard interval signal in a symbol. When setting a FFT window of an effective symbol length in a symbol duration of each symbol, if the impulse noise occurrence time is included in the symbol, the OFDM reception device determines a start position of the FFT window within a range of the start position candidate period so as to exclude the impulse noise occurrence time as much as possible.
摘要翻译： OFDM接收装置检测接收的OFDM信号中出现脉冲噪声的时间，并指定不具有码间干扰的开始位置候补周期，并且估计出具有符号中的保护间隔信号。当在每个符号的符号持续时间中设置有效符号长度的FFT窗口时，如果脉冲噪声发生时间包括在符号中，则OFDM接收装置在开始位置候选的范围内确定FFT窗口的开始位置以便尽可能地排除脉冲噪声发生时间。

3. 发明授权

US07865218B2 Receiving device, integrated circuit, program, and receiving method 有权
标题翻译：接收装置，集成电路，程序和接收方式
公开(公告)号：US07865218B2
公开(公告)日：2011-01-04
申请号：US10588270
申请日：2005-12-02
申请人： Noritaka Iguchi , Ryosuke Mori , Tetsuya Yagi , Koji Setoh , Daisuke Hayashi , Ippei Kanno
发明人： Noritaka Iguchi , Ryosuke Mori , Tetsuya Yagi , Koji Setoh , Daisuke Hayashi , Ippei Kanno
IPC分类号： H04B1/38
CPC分类号： H04L1/0057 , H04L1/0045 , H04L1/0064 , H04N5/4401 , H04N21/4382 , H04N21/4436 , H04N21/64315 , H04W52/0229 , H04W52/0274 , Y02D70/142 , Y02D70/144 , Y02D70/168
摘要： A receiving device performs reception in a service period of a broadcast signal and switches to a power saving mode in a non-service period. The service period is composed of a first period during which an application data table of an MPE-FEC frame is transmitted and a second period, following the first period, during which an RS data table of the MPE-FEC frame is transmitted. An error correction unit 12 performs one of error correction that uses the whole RS data table according to MPE-FEC, and erasure correction that uses a same number of parity bytes as bytes having bit errors. When the bit errors are corrected by the error correction unit 12 performing erasure correction, a power control unit 30 switches a receiving circuit to a power saving mode before the second period ends.
摘要翻译：接收装置在广播信号的服务期间进行接收，并在非服务期间切换到省电模式。服务周期由发送MPE-FEC帧的应用数据表的第一周期和在第一周期之后的第二周期组成，在该周期期间发送MPE-FEC帧的RS数据表。错误校正单元12执行根据MPE-FEC使用整个RS数据表的纠错中的一种，以及使用与具有位错误的字节相同数量的奇偶校验字节的擦除校正。当错误校正单元12执行擦除校正来校正位错误时，功率控制单元30在第二周期结束之前将接收电路切换到省电模式。

4. 发明申请

US20070281757A1 Receiving Device, Integrated Circuit, Program, and Receiving Method 有权
标题翻译：接收设备，集成电路，程序和接收方法
公开(公告)号：US20070281757A1
公开(公告)日：2007-12-06
申请号：US10588270
申请日：2005-12-02
申请人： Noritaka Iguchi , Ryosuke Mori , Tetsuya Yagi , Koji Setoh , Daisuke Hayashi , Ippei Kanno
发明人： Noritaka Iguchi , Ryosuke Mori , Tetsuya Yagi , Koji Setoh , Daisuke Hayashi , Ippei Kanno
IPC分类号： H04B1/16 , H04L1/00 , H04N5/44
CPC分类号： H04L1/0057 , H04L1/0045 , H04L1/0064 , H04N5/4401 , H04N21/4382 , H04N21/4436 , H04N21/64315 , H04W52/0229 , H04W52/0274 , Y02D70/142 , Y02D70/144 , Y02D70/168
摘要： A receiving device performs reception in a service period of a broadcast signal and switches to a power saving mode in a non-service period. The service period is composed of a first period during which an application data table of an MPE-FEC frame is transmitted and a second period, following the first period, during which an RS data table of the MPE-FEC frame is transmitted. An error correction unit 12 performs one of error correction that uses the whole RS data table according to MPE-FEC, and erasure correction that uses a same number of parity bytes as bytes having bit errors. When the bit errors are corrected by the error correction unit 12 performing erasure correction, a power control unit 30 switches a receiving circuit to a power saving mode before the second period ends.
摘要翻译：接收装置在广播信号的服务期间进行接收，并在非服务期间切换到省电模式。服务周期由发送MPE-FEC帧的应用数据表的第一周期和在第一周期之后的第二周期组成，在该周期期间发送MPE-FEC帧的RS数据表。错误校正单元12执行根据MPE-FEC使用整个RS数据表的纠错中的一种，以及使用与具有位错误的字节相同数量的奇偶校验字节的擦除校正。当错误校正单元12执行擦除校正来校正位错误时，功率控制单元30在第二周期结束之前将接收电路切换到省电模式。

5. 发明申请

US20060146693A1 OFDM signal receiving apparatus 有权
标题翻译： OFDM信号接收装置
公开(公告)号：US20060146693A1
公开(公告)日：2006-07-06
申请号：US11302872
申请日：2005-12-14
申请人： Ryosuke Mori , Koji Setoh , Daisuke Hayashi , Tetsuya Yagi , Noritaka Iguchi , Akira Kisoda , Sadashi Kageyama
发明人： Ryosuke Mori , Koji Setoh , Daisuke Hayashi , Tetsuya Yagi , Noritaka Iguchi , Akira Kisoda , Sadashi Kageyama
IPC分类号： H04Q7/00 , H04Q7/24 , H04J11/00
CPC分类号： H04L27/265 , H04B7/0845 , H04L27/2633
摘要： Disclosed is an OFDM signal receiving apparatus for diversity reception, with a plurality of antennas, of an OFDM signal containing Y sub-carriers, where 2X−1 1. The OFDM signal receiving apparatus includes a plurality of receiving systems, and a diversity processing unit connected to the receiving systems and fed with sequences of data on sub-carriers demodulated by the respective receiving systems. At least one of the receiving systems includes an FFT circuit for Fast Fourier transforming, in parallel, only a sequence of data on 2Z sub-carriers contained in the OFDM signal received with a corresponding antenna, where X>Z. The diversity processing unit performs a diversity process on sequences of data on sub-carriers, out of all the Y sub-carries, redundantly demodulated.
摘要翻译：公开了一种OFDM信号接收装置，用于分集接收包含Y个子载波的OFDM信号的多个天线，其中，2个X-1 和X> 1。 OFDM信号接收装置包括多个接收系统，以及连接到接收系统的分集处理单元，并且馈送有由各个接收系统解调的子载波上的数据序列。至少一个接收系统包括用于快速傅里叶变换的FFT电路，其并行地仅包含在用相应的天线接收的OFDM信号中的2个子载波上的数据序列，其中X > Z。在所有Y子载波中，分集处理单元对子载波上的数据序列执行分集处理，被冗余地解调。

6. 发明授权

US07466645B2 OFDM signal receiving apparatus 有权
标题翻译： OFDM信号接收装置
公开(公告)号：US07466645B2
公开(公告)日：2008-12-16
申请号：US11302872
申请日：2005-12-14
申请人： Ryosuke Mori , Koji Setoh , Daisuke Hayashi , Tetsuya Yagi , Noritaka Iguchi , Akira Kisoda , Sadashi Kageyama
发明人： Ryosuke Mori , Koji Setoh , Daisuke Hayashi , Tetsuya Yagi , Noritaka Iguchi , Akira Kisoda , Sadashi Kageyama
IPC分类号： H04J11/00
CPC分类号： H04L27/265 , H04B7/0845 , H04L27/2633
摘要： Disclosed is an OFDM signal receiving apparatus for diversity reception, with a plurality of antennas, of an OFDM signal containing Y sub-carriers, where 2X−1 1. The OFDM signal receiving apparatus includes a plurality of receiving systems, and a diversity processing unit connected to the receiving systems and fed with sequences of data on sub-carriers demodulated by the respective receiving systems. At least one of the receiving systems includes an FFT circuit for Fast Fourier transforming, in parallel, only a sequence of data on 2Z sub-carriers contained in the OFDM signal received with a corresponding antenna, where X>Z. The diversity processing unit performs a diversity process on sequences of data on sub-carriers, out of all the Y sub-carries, redundantly demodulated.
摘要翻译：公开了一种OFDM信号接收装置，用于分集接收包含Y个子载波的OFDM信号的多个天线，其中2X-1 1。 OFDM信号接收装置包括多个接收系统，以及连接到接收系统的分集处理单元，并且馈送有由各个接收系统解调的子载波上的数据序列。接收系统中的至少一个包括用于快速傅里叶变换的FFT电路，其中并行地仅包含用相应天线接收的OFDM信号中包含的2Z子载波上的数据序列，其中X> Z。在所有Y子载波中，分集处理单元对子载波上的数据序列执行分集处理，被冗余地解调。

7. 发明授权

US07715886B2 Method and apparatus of reduced power consumption in TDMA signal reception via backward output of input stream to eliminate receiver training period 有权
标题翻译： TDMA信号接收中通过输入流的反向输出降低功耗的方法和装置，以消除接收机训练周期
公开(公告)号：US07715886B2
公开(公告)日：2010-05-11
申请号：US11579736
申请日：2005-05-11
申请人： Ippei Kanno , Ryosuke Mori , Daisuke Hayashi , Kouji Setoh , Tetsuya Yagi , Noritaka Iguchi
发明人： Ippei Kanno , Ryosuke Mori , Daisuke Hayashi , Kouji Setoh , Tetsuya Yagi , Noritaka Iguchi
IPC分类号： H04B7/212 , H04B1/16 , H04L27/00 , H03D3/18
CPC分类号： H04W52/0241 , H04B1/1615 , Y02D70/168 , Y02D70/26 , Y02D70/40
摘要： The present invention aims to provide a reception apparatus that receives and demodulates a signal transmitted by using time-division multiplexing, with reduced power consumption. In detail, a receiving unit including a tuner operates to receive a signal only during a time period for which a desired signal is transmitted. The received signal is converted into digital data, and the digital data is stored into a memory. With the use of the digital data stored in the memory, a PLL performs all of the necessary operations from synchronization establishment to demodulation.
摘要翻译：本发明旨在提供一种接收装置，其以降低的功耗来接收和解调使用时分多路传输的信号。详细地说，包括调谐器的接收单元仅在期望的信号被发送的时间周期内接收信号。接收到的信号被转换为数字数据，数字数据被存储到存储器中。通过使用存储在存储器中的数字数据，PLL执行从同步建立到解调的所有必要操作。

8. 发明申请

US20070217356A1 Apparatus and Method for Receiving a Time-Division Multiplexed Signal 有权
标题翻译：用于接收时分多路复用信号的装置和方法
公开(公告)号：US20070217356A1
公开(公告)日：2007-09-20
申请号：US11579736
申请日：2005-05-11
申请人： Ippei Kanno , Ryosuke Mori , Daisuke Hayashi , Kouji Setoh , Tetsuyu Yagi , Noritaka Iguchi
发明人： Ippei Kanno , Ryosuke Mori , Daisuke Hayashi , Kouji Setoh , Tetsuyu Yagi , Noritaka Iguchi
IPC分类号： H04Q7/00
CPC分类号： H04W52/0241 , H04B1/1615 , Y02D70/168 , Y02D70/26 , Y02D70/40
摘要： The present invention aims to provide a reception apparatus that receives and demodulates a signal transmitted by using time-division multiplexing, with reduced power consumption. In detail, a receiving unit including a tuner operates to receive a signal only during a time period for which a desired signal is transmitted. The received signal is converted into digital data, and the digital data is stored into a memory. With the use of the digital data stored in the memory, a PLL performs all of the necessary operations from synchronization establishment to demodulation.
摘要翻译：本发明旨在提供一种接收装置，其以降低的功耗来接收和解调使用时分多路传输的信号。详细地说，包括调谐器的接收单元仅在期望的信号被发送的时间周期内接收信号。接收到的信号被转换为数字数据，数字数据被存储到存储器中。通过使用存储在存储器中的数字数据，PLL执行从同步建立到解调的所有必要操作。

9. 发明授权

US08340220B2 Receiver, integrated circuit, digital television receiver, reception method, and reception program 有权
标题翻译：接收机，集成电路，数字电视接收机，接收方式和接收方案
公开(公告)号：US08340220B2
公开(公告)日：2012-12-25
申请号：US12602672
申请日：2009-04-08
申请人： Tomohiro Kimura , Ryosuke Mori
发明人： Tomohiro Kimura , Ryosuke Mori
IPC分类号： H03K9/00 , H04L27/00
CPC分类号： H04L27/2647 , H04L25/021 , H04L25/022 , H04L25/0232 , H04L2025/03414 , H04N21/4382 , H04N21/44209 , H04N21/6112
摘要： A receiver receives an OFDM signal and performs the Fourier transform on the received OFDM signal. In the receiver, a first channel estimation subunit estimates channel characteristics at SP signal positions and interpolates the estimated channel characteristics in the time direction, whereas a second channel estimation subunit estimates channel characteristics at TMCC signal positions. A correlation calculation subunit performs an autocorrelation calculation on the output from the first channel estimation subunit, and performs a cross-correlation calculation on the output from the first channel estimation subunit and the output from the second channel estimation subunit. By using the results of the autocorrelation calculation and the cross-correlation calculation performed by the correlation calculation subunit, a control subunit controls a transfer function of an interpolation filter in a frequency interpolation subunit.
摘要翻译：接收机接收OFDM信号并对所接收的OFDM信号进行傅里叶变换。在接收机中，第一信道估计子单元估计SP信号位置的信道特性，并在时间方向内插估计的信道特性，而第二信道估计子单元估计TMCC信号位置的信道特性。相关计算子单元对第一信道估计子单元的输出进行自相关运算，对第一信道估计子单元的输出和第二信道估计子单元的输出进行互相关计算。通过使用相关计算子单元进行的自相关计算和互相关计算的结果，控制子单元控制频率插值子单元中的内插滤波器的传递函数。

10. 发明授权

US07450669B2 Demodulation apparatus and method, and integrated circuit of demodulation apparatus 有权
标题翻译：解调装置和方法，以及解调装置的集成电路
公开(公告)号：US07450669B2
公开(公告)日：2008-11-11
申请号：US11006040
申请日：2004-12-07
申请人： Ryosuke Mori
发明人： Ryosuke Mori
IPC分类号： H04L27/06
CPC分类号： H04L27/2662 , H04L27/2607 , H04L27/2678
摘要： An OFDM modulation apparatus receives a signal composed of OFDM symbols each of which is composed of an effective symbol and a guard interval, generates K delayed signals by delaying the received signal by K effective symbol periods, generates a signal by adding up all the K delayed signals, generates a first correlation signal that shows a correlation between the received signal and the addition-result signal, generates K×L second correlation signals from the first correlation signal, based on K×L combinations of K effective symbol periods and L fractions used to indicate the guard interval period, detects one among the K×L second correlation signals that indicates a largest correlation level, and detect periods of the effective symbol and the guard interval of the received signal in accordance with the detected second correlation signal.
摘要翻译： OFDM调制装置接收由OFDM符号构成的信号，每个符号由有效符号和保护间隔组成，通过将接收信号延迟K个有效符号周期来生成K个延迟信号，通过将所有K个延迟信号，产生表示接收信号与加法结果信号之间的相关性的第一相关信号，基于K个有效符号周期的KxL组合和用于指示卫星的L个分数，从第一相关信号产生KxL第二相关信号间隔期间，检测表示最大相关电平的KxL第二相关信号之一，并根据检测到的第二相关信号检测接收信号的有效符号和保护间隔的周期。

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