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101. 发明专利

JP2005260745A Multivalued modulating method and system 有权
标题翻译：多变量调制方法与系统
公开(公告)号：JP2005260745A
公开(公告)日：2005-09-22
申请号：JP2004071554
申请日：2004-03-12
申请人： Nec Corp , 日本電気株式会社
发明人： NODA SEIICHI
IPC分类号： H03M13/25 , H04L5/12 , H04L27/20 , H04L27/36
CPC分类号： H04L27/3438
摘要： PROBLEM TO BE SOLVED: To provide a multivalued modulating method and system for reducing a bit error relative to a symbol error. SOLUTION: In multivalued modulation where N is any value that is not a power of 2 but starts from 12 and becomes double sequentially like 24, 48, 96..., and a binary signal of a specific length (n) (a multivalued number N is 12, 24, 48, 96, ... respectively when the bit length (n) is 7, 9, 11, 13, ...) is associated with two phase planes, respectively as an N-valued signal and transmitted, among (n) bits, 2 bits are associated with identification of four quadrants of a first phase plane and among the remaining (n-2) bits, 2 bits are associated with identification of four quadrants of a second phase plane. A binary signal of 3 bits in the (n) bits is then converted into tertiary signals (T1, T2) having 2 digits, and the tertiary signals are mapped to the first and second phase planes so as to be rotation-symmetric of 90° or axis-symmetric. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于减少相对于符号误差的位误差的多值调制方法和系统。解决方案：在多值调制中，其中N是不是2的幂而是从12开始的任何值，并且如同24,48,96 ...一样变为二次，并且具有特定长度（n）的二进制信号分别当位长（n）为7,9,11,13，...）时，多值数N分别为12,24,48,96 ...，分别作为N值信号并且在（n）位之间）发送，2位与第一相位平面的四个象限的识别相关联，并且在剩余（n-2）位中，2位与第二相位平面的四个象限的识别相关联。然后将（n）位中的3位的二进制信号转换为具有2位数的三级信号（T1，T2），并将第三级信号映射到第一和第二相位，使其为90°的旋转对称或轴对称。版权所有（C）2005，JPO＆NCIPI

102. 发明专利

JP2003526987A 失效
公开(公告)号：JP2003526987A
公开(公告)日：2003-09-09
申请号：JP2001566277
申请日：2001-03-07
IPC分类号： H03M13/27 , H03M13/29 , H03M13/45 , H04L1/00 , H04L5/12 , H04L27/00 , H04L27/22 , H04L27/38

103. 发明专利

JPH11145850A ENCODING/DECODING METHOD/DEVICE AND UNIT USING THE SAME 失效
公开(公告)号：JPH11145850A
公开(公告)日：1999-05-28
申请号：JP24547998
申请日：1998-08-31
申请人： CANON KK
发明人： PIRET PHILIPPE , LE DANTEC CLAUDE
IPC分类号： H03M7/00 , G06F7/48 , G06F11/08 , G06F11/10 , G06F17/10 , H03M13/00 , H04L1/00 , H04L5/12 , H04L27/34
摘要： PROBLEM TO BE SOLVED: To generate a code word belonging to a Reed-Solomon code on a Galois body by solving an equation showing a regulation that a redundant symbol exists in a first alphabet. SOLUTION: A central processing unit 106, a random access memory(RAM) 104, a read-only-memory(ROM) 105 and an input port 103 for receiving information which an encoding/transmitting device transmits in an octet system are provided. The input port 103 inputs a main symbol belonging to the first alphabet. The RAM 104, the ROM 105 and the central processing unit 106, which are processing means, decide the redundant symbol for decoding the code word formed from the main symbol and the redundant symbol by a decoder operating on a second alphabet and solve the equation showing the regulation that the redundant symbol exists in the first alphabet. An output port 107 outputs the symbol of the code word.

104. 发明专利

JP2837104B2 失效
公开(公告)号：JP2837104B2
公开(公告)日：1998-12-14
申请号：JP32916794
申请日：1994-12-28
申请人： SANSEI DENSHI KK
发明人： AREN RUROI RINBAAGU , JIAN YAN
IPC分类号： H04N7/025 , H04L5/12 , H04L25/497 , H04L27/18 , H04L27/22 , H04N5/21 , H04N5/44 , H04N7/03 , H04N7/035 , H04N7/08 , H04N7/081 , H04N11/24
摘要： BPSK modulation of suppressed carrier in quadrature with a video carrier amplitude-modulated by composite video signal is used for transmitting a serial-bit digital signal, which is subjected both to "pre-line-comb" and "pre-frame-comb" partial-response filtering prior to conversion to BPSK modulating signal. The "pre-frame-comb" partial-response filtering of the serial-bit data is done on a continuous basis, rather than transmitting frames of the BPSK twice, once in positive logic and once in negative logic, during successive pairs of consecutive frames of the NTSC television signal. This results in the full luminance bandwidth below chroma frequencies being available on average for the transmission of BPSK, rather than half that bandwidth.

105. 发明专利

JP2785489B2 失效
公开(公告)号：JP2785489B2
公开(公告)日：1998-08-13
申请号：JP51618094
申请日：1994-10-31
申请人： MOTOROORA INC
发明人： SUCHATSUFUNAA TERII MAIKERU , KOTSUTOJIN MAIKERU DEII , BAN DEN HYUUBERU ANSONII PII
IPC分类号： H04L27/18 , H04B1/707 , H04L1/00 , H04L5/12 , H04J13/00

106. 发明专利

JPH07274141A APPARATUS FOR TRANSMITTING DIGITAL INFORMATION AND DIGITAL SIGNAL RECEIVER 失效
公开(公告)号：JPH07274141A
公开(公告)日：1995-10-20
申请号：JP32916794
申请日：1994-12-28
申请人： SAMSUNG ELECTRONIC
发明人： AREN RUROI RINBAAGU , JIAN YAN
IPC分类号： H04N7/025 , H04L5/12 , H04L25/497 , H04L27/18 , H04L27/22 , H04N5/21 , H04N5/44 , H04N7/03 , H04N7/035 , H04N7/08 , H04N7/081 , H04N11/24
摘要： PURPOSE: To detect a signal of a low bit error rate by providing a partial response filtering means with a preframe comb line partial response filter and a serial bit digital information supply means. CONSTITUTION: Serial bit data generated by a generator 13 is supplied to an interleaver 15 through a rate buffer 14 for data compression and is converted to an intra-frame bit sequential string. This obtained serial bit stream is given to a preline comb partial response filter 16, and its digital response is supplied to a preframe comb partial response filter 17. The response from the filter 17 is outputted to a high frequency pre-emphasis and shift forming filter 19 through a D/A converter 18 for conversion to an analog keying signal. The filter 19 compensates the loss of the detection efficiency for synchronous detection of VSB and BPSK.

107. 发明专利

JPH05130609A RECEIVER FOR SIGNAL DISTRIBUTION SYSTEM 失效
公开(公告)号：JPH05130609A
公开(公告)日：1993-05-25
申请号：JP11283292
申请日：1992-05-01
申请人： PHILIPS NV
发明人： ENGERU ROOZA , HENDORITSUKU HERITSUTO FUAN FU
IPC分类号： H04L5/12 , H04N7/10 , H04N7/173 , H04N7/22 , H04N7/26
摘要： PURPOSE: To provide a receiver that reproduces at least one kind of a broard band signal by using a carrier subject to inter orthogonal amplitude modulation with two digital data streams. CONSTITUTION: An output signal from a demodulator 21 is fed to a clock signal extract circuit 22 and a signal reproduction device 23. The clock signal extract circuit 22 extracts a clock signal whose frequency is 70MHz from a digital video signal and the signal reproduction device 23 reproduces the digital video signal by using the clock signal. A voice component of the output signal of the demodulator 21 is fed to a frequency shift demodulator (DM) 26 via a band pass filter 25 whose pass frequency is adjusted to a voice carrier frequency of 45MHz. The modulated digital audio signal is fed to a clock signal extract circuit 27 and a signal reproduction device 28. The clock signal extract circuit 27 extracts a clock signal whose frequency is 2MHz used for reproduction of the digital audio signal from the digital audio signal.

108. 发明专利

JPS6362931B2 失效
公开(公告)号：JPS6362931B2
公开(公告)日：1988-12-05
申请号：JP7532382
申请日：1982-05-07
IPC分类号： H04L5/12 , H04L27/00 , H04L27/22 , H04L27/32

109. 发明专利

JP2012204928A Transmission device, reception device, transmission method, and reception method 有权
公开(公告)号：JP2012204928A
公开(公告)日：2012-10-22
申请号：JP2011065593
申请日：2011-03-24
申请人： Jvc Kenwood Corp , 株式会社Jvcケンウッド
发明人： SHIRAISHI KENICHI
IPC分类号： H04L5/12 , H04L27/20
摘要： PROBLEM TO BE SOLVED: To provide technique for efficiently multiplexing data.SOLUTION: Since first correspondence relation between the value of first data to be input and the position of a signal point in a constellation is predetermined, a reference phase mapping part 20 maps the input first data to the signal point by symbol unit in accordance with the first correspondence relation. Since second correspondence relation to relatively become the same correspondence relation as the first one with respect to the axis of a constellation, which is obtained by rotating the axis of the constellation in the reference phase mapping part 20, is predetermined, a shift phase mapping part 22 maps the input first data to a signal point by symbol unit in accordance with the second correspondence relation. A selection part 26 selects a symbol which is mapped in the reference phase mapping part 20 or a symbol which is mapped in the shift phase mapping part 22 based on the value of the input second data.

110. 发明专利

JP2012204927A Transmission device, reception device, transmission method, and reception method 审中-公开
标题翻译：传输设备，接收设备，传输方法和接收方法
公开(公告)号：JP2012204927A
公开(公告)日：2012-10-22
申请号：JP2011065592
申请日：2011-03-24
申请人： Jvc Kenwood Corp , 株式会社Jvcケンウッド
发明人： SHIRAISHI KENICHI
IPC分类号： H04L5/12 , H04L27/22
摘要： PROBLEM TO BE SOLVED: To provide technique for efficiently multiplexing data.SOLUTION: Since first correspondence relation between the value of first data to be input and the position of a signal point in a constellation is predetermined, a reference phase mapping part 20 maps the input first data to the signal point by symbol unit in accordance with the first correspondence relation. Since second correspondence relation to relatively become the same correspondence relation as the first one with respect to the axis of a constellation, which is obtained by rotating the axis of the constellation in the reference phase mapping part 20, is predetermined, a shift phase mapping part 22 maps the input first data to a signal point by symbol unit in accordance with the second correspondence relation. A selection part 26 selects a symbol which is mapped in the reference phase mapping part 20 or a symbol which is mapped in the shift phase mapping part 22 based on the value of the input second data.
摘要翻译：要解决的问题：提供有效地复用数据的技术。解决方案：由于要输入的第一数据的值和星座中的信号点的位置之间的第一对应关系是预先确定的，所以参考相位映射部分20将输入的第一数据按符号单位映射到信号点按照第一个对应关系。由于相对于相对于相对于通过在基准相位映射部20中旋转星座的轴而获得的星座的轴的第一对应关系的第二对应关系被预先确定，移位相位映射部图22根据第二对应关系将输入的第一数据按符号单位映射到信号点。选择部分26基于输入的第二数据的值选择映射在参考相位映射部分20中的符号或映射在移位相位映射部分22中的符号。版权所有（C）2013，JPO＆INPIT

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