发明名称 |
TERRESTRIAL DIGITAL BROADCAST WAVE TRANSMISSION SYSTEM |
摘要 |
PROBLEM TO BE SOLVED: To provide a terrestrial digital broadcast wave transmission system restrictively supplying a broadcast wave to a desired fringe area with a simple configuration. SOLUTION: The terrestrial digital broadcast wave transmission system includes: an amplifier circuit 1 for amplifying a signal of a terrestrial digital broadcast wave; a coaxial cable 2 used for transmitting the amplified signal; a coupler 3 connected to the coaxial cable 2 and distributing a signal from the coaxial cable 2 to a plurality of branches; and an antenna 4 connected to at least the coupler 3 as one of the branches and for emitting the distributed signal, and the antenna 4 is installed to the fringe area A of the terrestrial digital broadcast wave. COPYRIGHT: (C)2007,JPO&INPIT |
申请公布号 |
JP2007028373(A) |
申请公布日期 |
2007.02.01 |
申请号 |
JP20050209844 |
申请日期 |
2005.07.20 |
申请人 |
HITACHI CABLE LTD;N H K ITEC:KK |
发明人 |
SODA HIROYOSHI;MAKUUCHI KATSUTOSHI;UEHARA KAZUTAKA;OZAKI YASUKI;KOTANI TAKASHI |
分类号 |
H04B7/15;H04H20/00;H04H20/02;H04H20/06;H04H20/77;H04N5/00;H04N7/10;H04N21/61 |
主分类号 |
H04B7/15 |
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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