| 摘要 |
<p>In a TVRO receiver having a tuner producing output signals having bandwidths which vary from channel to channel, the improvement comprising bandpass filtering means receiving the output signals and having a controllably adjustable pass band, bandwidth detecting means responsive to the output signals for producing a control signal in response to deviations of the bandwidth of the current output signal beyond the current pass band of the filtering means, and control means responsive to the control signal for adjusting the pass band of the filtering means to correspond to the bandwidth of the current output signal.</p> |
