发明名称 Communication apparatus and method
摘要 A communication apparatus and method is arranged such that, when executing a communication protocol conforming to V.34 recommendation, the communication procedure is appropriately recovered even if a second tone signal (a tone A or a tone B) is not received within 2 seconds. A CPU (central processing unit) recognizes a state of execution of the communication procedure by a modem. When the second tone A signal (or tone B signal) has not been received, the CPU causes the modem to receive the tone A signal for a defined time period. When the tone A signal has been received within the defined time period, the CPU returns the communication procedure conforming to the V.34 recommendation by the modem to the first half portion of phase 2.
申请公布号 US6366363(B1) 申请公布日期 2002.04.02
申请号 US19980190099 申请日期 1998.11.12
申请人 CANON KABUSHIKI KAISHA 发明人 HARADA KOJI;YOSHIDA TAKEHIRO;SAITO HITOSHI;NISHIOKA KOJI
分类号 H04L29/08;H04N1/32;(IPC1-7):H04N1/00 主分类号 H04L29/08
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