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    • 2. 发明授权
    • Digital data transmitter, transmission line encoding method, and decoding method
    • 数字数据发射机,传输线编码方法和解码方法
    • US07190728B2
    • 2007-03-13
    • US10398447
    • 2001-10-05
    • Hirotsugu KawadaYuji MizuguchiTakahisa SakaiNoboru KattaToshihiko Kurosaki
    • Hirotsugu KawadaYuji MizuguchiTakahisa SakaiNoboru KattaToshihiko Kurosaki
    • H04L27/00
    • H04L25/062H04L25/066H04L25/085H04L25/4919
    • A digital data transmission apparatus includes a transmitting end (100) that includes: a binary/quadrary conversion unit (110) for converting a data stream; a coding unit (120) for mapping the converted data to be coded; a digital filter (130); a D/A conversion unit (140); a low-pass filter (150) for eliminating a high-band signal; a differential driver (160) for inputting an analog signal that has passed through the low-pass filter into a twisted pair cable (300), and a receiving end (200) that includes: a low-pass filter (210) for eliminating noises from both wires of the twisted pair cable; a receiver (220) for receiving the signals that have passed through the low-pass filter; an A/D conversion unit (230); a digital filter (240); an evaluation unit (250) for evaluating a signal level of a received signal; a decoding unit (260) for decoding the signal level into receipt data; and a synchronization unit (270) for generating a clock.
    • 数字数据传输装置包括:发送端(100),包括:用于转换数据流的二进制/四次转换单元(110); 编码单元,用于映射所转换的要编码的数据; 数字滤波器(130); D / A转换单元(140); 用于消除高频带信号的低通滤波器(150); 用于将通过所述低通滤波器的模拟信号输入到双绞线电缆(300)中的差分驱动器(160)以及包括:用于消除噪声的低通滤波器(210)的接收端(200) 从双绞线的两根电线; 接收器(220),用于接收已经通过低通滤波器的信号; A / D转换单元(230); 数字滤波器(240); 评估单元(250),用于评估接收信号的信号电平; 解码单元,用于将信号电平解码为接收数据; 以及用于产生时钟的同步单元(270)。
    • 7. 发明授权
    • Initializing method and data transmitter
    • 初始化方法和数据发送器
    • US07012936B2
    • 2006-03-14
    • US10398452
    • 2001-10-05
    • Hirotsugu KawadaYuji MizuguchiTakahisa SakaiNoboru KattaToshihiko KurosakiNobuhiko YasuiYutaka Takahira
    • Hirotsugu KawadaYuji MizuguchiTakahisa SakaiNoboru KattaToshihiko KurosakiNobuhiko YasuiYutaka Takahira
    • H04J3/06
    • H04L25/085H04J3/0638H04L7/046H04L7/10H04L25/062H04L25/066H04L25/4919
    • A first initialization pattern signal is a signal in which a maximum signal level and a minimum signal level appear alternately, and a second initialization pattern signal is a signal in which all signal levels appear in a predetermined arrangement. In a ring-shaped network including plural stages of data transmission apparatuses (100), a transmission unit (110) of each data transmission apparatus outputs the first initialization pattern signal successively to a next-stage data transmission apparatus at turn-on of power or immediately after reset, and a reception unit (120) establishes clock synchronization on the basis of the first initialization pattern signal received. When synchronization is established in all of the data transmission apparatuses, the transmission unit (110) outputs the second initialization pattern signal successively to the next-stage data transmission apparatus, and the reception unit (120) sets evaluation levels for the respective signal levels on the basis of the received second initialization pattern signal, and transmission/reception of data is started when evaluation levels are set in all of the data transmission apparatuses.
    • 第一初始化模式信号是其中最大信号电平和最小信号电平交替出现的信号,并且第二初始化模式信号是其中所有信号电平以预定布置出现的信号。 在包括多级数据传输装置(100)的环形网络中,每个数据传输装置的传输单元(110)将第一初始化模式信号连续地输出到下一级数据传输装置, 并且接收单元(120)基于所接收的第一初始化模式信号建立时钟同步。 当在所有数据传输装置中建立同步时,发送单元(110)将第二初始化模式信号连续地输出到下一级数据发送装置,并且接收单元(120)将各信号电平的评估电平设置为 当在所有数据传输装置中设置评估级别时,开始接收到的第二初始化模式信号的基础和数据的发送/接收。
    • 9. 发明授权
    • Digital data transmitter
    • 数字数据发射机
    • US07218678B2
    • 2007-05-15
    • US10398450
    • 2001-10-05
    • Noboru KattaYuji MizuguchiTakahisa SakaiHirotsugu KawadaToshihiko Kurosaki
    • Noboru KattaYuji MizuguchiTakahisa SakaiHirotsugu KawadaToshihiko Kurosaki
    • H04L27/00
    • H04L25/062H04L25/066H04L25/085H04L25/4919
    • A digital data transmission apparatus includes a transmitting end (100) that includes: a binary/quadrary conversion unit (110) for converting a data stream; a coding unit (120) for mapping converted data to be coded; a digital filter (130); a D/A conversion unit (140); a low-pass filter (150) for attenuating noises which are caused by folding distortion; a differential driver (160); low-pass filters (170a) and (170b) for eliminating noises from differentially outputted signals; and a common mode choke coil (180) for eliminating common mode noises and outputting a resultant signal to a twisted pair cable (300), and a receiving end (200) that includes: a low-pass filter (210) for eliminating noises from the twisted pair cable; a receiver (220); an A/D conversion unit (230); a digital filter (240); an evaluation unit (250) for evaluating a signal level of a received signal; a decoding unit (260) for decoding the signal level into received data; and a synchronization unit (270) for generating a clock.
    • 数字数据传输装置包括:发送端(100),包括:用于转换数据流的二进制/四次转换单元(110); 编码单元(120),用于映射要编码的转换数据; 数字滤波器(130); D / A转换单元(140); 用于衰减由折叠失真引起的噪声的低通滤波器(150); 差速驱动器(160); 低通滤波器(170a)和(170b),用于消除差分输出信号的噪声; 以及用于消除共模噪声并将结果信号输出到双绞线电缆(300)的共模扼流线圈(180),以及接收端(200),包括:低通滤波器(210),用于消除噪声 双绞线; 接收器(220); A / D转换单元(230); 数字滤波器(240); 评估单元(250),用于评估接收信号的信号电平; 用于将信号电平解码为接收数据的解码单元(260); 以及用于产生时钟的同步单元(270)。