发明名称 Communication apparatus enabling communication according to ITU-T recommendation V.34
摘要 According to the present invention, when a direction in which a retrain signal is to be transmitted is determined in advance in the communication procedures, and when the retrain procedures are to be performed by detection of a communication error via a control channel, the transmission/reception of the retrain signal is performed in the determined direction, so that the retrain procedures can be appropriately performed.
申请公布号 US6411648(B1) 申请公布日期 2002.06.25
申请号 US19980033586 申请日期 1998.03.03
申请人 CANON KABUSHIKI KAISHA 发明人 YOSHIDA TAKEHIRO
分类号 H04N1/32;H04L5/16;H04L29/08;(IPC1-7):H04L5/16 主分类号 H04N1/32
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