发明名称 |
BIDIRECTIONAL DATA COMMUNICATION SYSTEM |
摘要 |
A tree-type two-way data communication system for use in a cable television system comprises a plurality of interface subsystems, each of them capable of receiving digital command signals, wherein each of said subsystems verifies data format and regenerates and forwards at least some of said digital commands as packet signals towards a head end subsystem, said head end subsystem receiving said packet signals and developing response signals. |
申请公布号 |
JPS61139141(A) |
申请公布日期 |
1986.06.26 |
申请号 |
JP19840259436 |
申请日期 |
1984.12.10 |
申请人 |
PAKETSUTO TEKUNOROJIISU INC |
发明人 |
POORU BARAN;MAATEN AARU PURANJIYA |
分类号 |
H04N7/10;H04L5/14;H04L12/44;H04N7/173 |
主分类号 |
H04N7/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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