发明名称 |
Radio receiver using level-variable reference, signal for discriminative detection of data signal and signal discrimination method |
摘要 |
A radio receiver apparatus for receiving a spread spectrum signal in which a signal derived through a level detection of a signal demodulated by a correlative demodulator and a signal obtained by extracting a signal component of a synchronous frequency from a reception synchronizing clock are combined to thereby generate a reference signal having a level which changes in accordance with change of the detected signal, and by comparing the detected signal with the reference signal, the received signal is discriminated.
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申请公布号 |
US6094451(A) |
申请公布日期 |
2000.07.25 |
申请号 |
US19960593085 |
申请日期 |
1996.01.29 |
申请人 |
HITACHI, LTD.;HITACHI MEDIA ELECTRONICS CO., LTD. |
发明人 |
MOTEKI, MINORU;OKAJIMA, DAINI;TAMIZU, KAZUHIDE;TAMARU, KENJI |
分类号 |
H04B1/707;(IPC1-7):H04B15/00;H04K1/00;H03D1/04 |
主分类号 |
H04B1/707 |
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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