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发明名称
CHANGEOVER SYSTEM FOR MODULATOR-DEMODULATOR
摘要
申请公布号
JPH03235543(A)
申请公布日期
1991.10.21
申请号
JP19900032848
申请日期
1990.02.13
申请人
NEC CORP
发明人
HASHIMOTO AKIRA
分类号
H04L27/00;H04B1/74;H04L1/22;H04L29/14
主分类号
H04L27/00
代理机构
代理人
主权项
地址
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