发明名称 |
Digital Communication Apparatus |
摘要 |
<p>A highly reliable and high-speed data transmission is made by using an FH or MFSK mode as suitably selected according to the usage of channels. When a reception signal is entered into a receiver through a transmission line, (i) a signal processing unit supplies the spectrum intensity values of carrier frequencies, (ii) a channel detection unit controls the phase of a time slot based on the spectrum intensity values, selects the MFSK or FH modulation mode, and supplies reception code data corresponding to detected carrier frequencies, and (iii) a decoder supplies reception information data based on the reception code data. When transmission information data are entered into a transmitter, (i) a coding unit supplies, according to the selected modulation mode, transmission code data based on the transmission information data, (ii) a channel generation unit supplies, based on the transmission code data, carrier frequencies to be used and (iii) a waveform generation unit supplies a transmission signal to a transmission line. <IMAGE></p> |
申请公布号 |
EP0779726(A3) |
申请公布日期 |
1997.12.10 |
申请号 |
EP19960120002 |
申请日期 |
1996.12.12 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
KOGA, SHOICHI;IGATA, YUJI;HASAKO, SATOSHI;MAKI, MASAHIRO;KISHIMOTO, MICHINORI |
分类号 |
H04B1/713;H04J4/00;H04L1/00;H04L1/20;H04L27/00;H04L27/10;H04L27/26;H04W56/00;H04W72/04;H04W72/08;H04W76/02;(IPC1-7):H04L27/00 |
主分类号 |
H04B1/713 |
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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