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1. 发明授权

US07095866B1 Wireless 900 MHz broadcast link 有权
标题翻译：无线900 MHz广播链路
公开(公告)号：US07095866B1
公开(公告)日：2006-08-22
申请号：US09903166
申请日：2001-07-11
申请人： Niko Drakoulis , Ronald G. Pace , Michael K. Pedigo , Russell A. Phillips
发明人： Niko Drakoulis , Ronald G. Pace , Michael K. Pedigo , Russell A. Phillips
IPC分类号： H04R5/02 , H04M1/00 , H04B3/00 , H04B7/00 , H04B15/00
CPC分类号： H04B1/16 , H04H60/80
摘要： A high frequency signal transmission apparatus includes a transmitter for transmitting received signals from a signal source as a modulated signal on a high frequency 900 MHz carrier to a remote receiver. The remote receiver converts the high frequency carrier in at least one conversion step to a lower frequency carrier signal. The lower frequency carrier signal carrying the modulated signal is then converted to an audio output or to another carrier signal and retransmitted as a modulated second signal to another remote receiver capable of demodulating the signal and broadcasting the audio sounds or video images. The oscillators in the transmitter and receiver are selectable to operate at discrete frequencies. Automatic fine tuning control is provided in the receiver to accommodate drift of the oscillator in the receiver.
摘要翻译：高频信号传输装置包括发射机，用于将来自信号源的接收信号作为高频900MHz载波上的调制信号传输到远程接收机。远程接收机将至少一个转换步骤中的高频载波转换为较低频率的载波信号。承载调制信号的较低频率载波信号然后被转换为音频输出或另一个载波信号，并作为调制的第二信号重新发送到能够解调信号并广播音频声音或视频图像的另一个远程接收机。发射机和接收机中的振荡器可选择以离散频率工作。在接收机中提供了自动微调控制，以适应接收机中振荡器的漂移。

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