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1. 发明授权

US5732336A Receiver 失效
标题翻译：接收器
公开(公告)号：US5732336A
公开(公告)日：1998-03-24
申请号：US683430
申请日：1996-07-18
申请人： Shunji Tochihara
发明人： Shunji Tochihara
IPC分类号： H04L25/40 , H03L7/093 , H04B1/10 , H04B7/26 , H04L7/02 , H04L7/033 , H04B1/18 , H04B1/06
CPC分类号： H04L7/0334 , H03L7/093
摘要： A reception clock signal used for a data sampling unit to sample received data is generated by a reception clock generator based on a reference clock signal, which is generated by a reference clock generator based on a reference bit rate frequency. The reference bit rate frequency is produced by a reference oscillator which is controlled by a control voltage. The control voltage is generated by a phase difference-to-voltage converter depending on the phase difference, detected by the reception clock generator, between the timing of a change in the received data and the reference clock signal. If good reception sensitivity is not available due to a phase difference, then the phase difference-to-voltage converter generates a control voltage in a manner to eliminate the phase difference, and applies the generated control voltage to a variable capacitor connected to the reference oscillator for automatically adjusting the reference bit rate frequency.
摘要翻译：由接收时钟发生器基于参考时钟信号产生用于数据采样单元采样接收数据的接收时钟信号，该参考时钟信号是由参考时钟发生器基于参考比特率频率产生的。参考比特率频率由受控制电压控制的参考振荡器产生。控制电压由相位差 - 电压转换器根据由接收时钟发生器检测的相位差在接收数据的改变定时与基准时钟信号之间产生。如果由于相位差导致良好的接收灵敏度不可用，则相位差电压转换器以消除相位差的方式产生控制电压，并将所产生的控制电压施加到连接到基准振荡器的可变电容器用于自动调整参考比特率频率。

2. 发明授权

US5787342A Receiver 失效
标题翻译：接收器
公开(公告)号：US5787342A
公开(公告)日：1998-07-28
申请号：US684139
申请日：1996-07-18
申请人： Shunji Tochihara , Yoshinari Nanao
发明人： Shunji Tochihara , Yoshinari Nanao
IPC分类号： H04B1/10 , H03J7/04 , H04B1/26 , H04B1/06
CPC分类号： H03J7/04 , H04B1/26
摘要： In a receiver of the present invention, a local oscillator frequency, used as a basis for a reception unit to demodulate a received signal, is generated by a local oscillator based on a reference frequency, which is generated by a voltage-controlled oscillator whose oscillation frequency is adjusted by a control voltage applied thereto. The control voltage is prescribed by a decoding unit which monitors a reception electric field intensity (RSSi) or an error rate in the reception unit. The control voltage is adjusted in a manner to increase the reception electric field intensity (RSSi) or reduce the error rate. When the local oscillator frequency experiences a large deviation and the signal cannot be received with good reception sensitivity, the decoding unit generates a control voltage in a manner so as to eliminate the deviation and applies the generated control voltage to the voltage-controlled oscillator for automatically adjusting the local oscillator frequency to a level having a reduced deviation.
摘要翻译：在本发明的接收机中，本地振荡器频率用作接收单元解调接收信号的基础，由本地振荡器基于参考频率产生，该基准频率是由其振荡的压控振荡器产生的通过施加到其上的控制电压来调整频率。控制电压由监视接收单元中的接收电场强度（RSSi）或错误率的解码单元规定。以增加接收电场强度（RSSi）或降低误码率的方式调节控制电压。当本地振荡器频率经历较大的偏差，并且不能以良好的接收灵敏度接收信号时，解码单元以这样的方式产生控制电压以消除偏差，并将所产生的控制电压施加到压控振荡器将本地振荡器频率调整到具有减小的偏差的电平。

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