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公开(公告)号：EP0474241A2
公开(公告)日：1992-03-11
申请号：EP91115081.1
申请日：1991-09-06
申请人： FUJITSU LIMITED
发明人： Okuyama, Yuzo , Sato, Kazuo , Tachibana, Yamato, c/o Fujitsu Communication , Motono, Ryuhei, c/o Fujitsu Hokkaido Communication , Takeoka, Kazuo, c/o Fujitsu Communication
CPC分类号： H04L25/4925 , H03M5/18 , H04L1/247
摘要： A HDB3 code violation detector includes a converting part (1) for receiving positive polarity data and negative polarity data from a PCM line and for converting a HDB3 code received via the PCM line into an NRZ signal, a first judging part (2) receiving the positive polarity data, the negative polarity data and the NRZ signal, for judging whether or not a pattern of the NRZ signal received from the converting part is possible when the NRZ signal is NRZ "1" and for outputting a judgement result, a second judging part (3) receiving the positive polarity data, the negative polarity data and the NRZ signal, for judging whether or not a pattern of the NRZ signal received from the converting part is possible when the NRZ signal has a maximum of three consecutive NRZ "0"s and for outputting a judgement result, a third judging part (4) receiving the positive polarity data, the negative polarity data and the NRZ signal, for judging whether or not a pattern of the NRZ signal received from the converting part is possible when the NRZ signal has at least four consecutive NRZ "0"s and for outputting a judgement result, and a detecting part (5) for detecting a code violation of the HDB3 code based on the judgement results of the first, second and third judging parts.
摘要翻译： HDB3码违例检测器包括：转换部分（1），用于从PCM线接收正极性数据和负极性数据，并用于将通过PCM线接收的HDB3码转换为NRZ信号;第一判断部分（2），接收 正极性数据，负极性数据和NRZ信号，当NRZ信号为NRZ“1”时，用于判断从转换部分接收的NRZ信号的模式是否可能并且用于输出判断结果，第二判断 接收正极性数据，负极性数据和NRZ信号的部分（3），用于当NRZ信号具有最大三个连续的NRZ“0”时，判断从转换部分接收的NRZ信号的模式是否可能 并且用于输出判断结果;第三判断部分（4），接收正极性数据，负极性数据和NRZ信号，用于判断从共同接收器接收的NRZ信号的模式 当NRZ信号具有至少四个连续的NRZ“0”并且用于输出判断结果时，反转部分是可能的;以及检测部分（5），用于基于第一，第二和第三比特的判断结果检测HDB3码的码违例， 第二和第三判断部分。
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公开(公告)号：EP0474241A3
公开(公告)日：1992-11-25
申请号：EP91115081.1
申请日：1991-09-06
申请人： FUJITSU LIMITED
发明人： Okuyama, Yuzo , Sato, Kazuo , Tachibana, Yamato, c/o Fujitsu Communication , Motono, Ryuhei, c/o Fujitsu Hokkaido Communication , Takeoka, Kazuo, c/o Fujitsu Communication
CPC分类号： H04L25/4925 , H03M5/18 , H04L1/247
摘要： A HDB3 code violation detector includes a converting part (1) for receiving positive polarity data and negative polarity data from a PCM line and for converting a HDB3 code received via the PCM line into an NRZ signal, a first judging part (2) receiving the positive polarity data, the negative polarity data and the NRZ signal, for judging whether or not a pattern of the NRZ signal received from the converting part is possible when the NRZ signal is NRZ "1" and for outputting a judgement result, a second judging part (3) receiving the positive polarity data, the negative polarity data and the NRZ signal, for judging whether or not a pattern of the NRZ signal received from the converting part is possible when the NRZ signal has a maximum of three consecutive NRZ "0"s and for outputting a judgement result, a third judging part (4) receiving the positive polarity data, the negative polarity data and the NRZ signal, for judging whether or not a pattern of the NRZ signal received from the converting part is possible when the NRZ signal has at least four consecutive NRZ "0"s and for outputting a judgement result, and a detecting part (5) for detecting a code violation of the HDB3 code based on the judgement results of the first, second and third judging parts.
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公开(公告)号：EP0474241B1
公开(公告)日：1996-02-07
申请号：EP91115081.1
申请日：1991-09-06
申请人： FUJITSU LIMITED
发明人： Okuyama, Yuzo , Sato, Kazuo , Tachibana, Yamato, c/o Fujitsu Communication , Motono, Ryuhei, c/o Fujitsu Hokkaido Communication , Takeoka, Kazuo, c/o Fujitsu Communication
CPC分类号： H04L25/4925 , H03M5/18 , H04L1/247
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