| 摘要 |
<p>There is provided in accordance with the invention apparatus and a method for the receipt and processing of data signals carried in a plurality of predefined frequency bands, and allowing a frequency band which is required at an instant of time to be selected from the said predefined frequency bands and from which data is to be retrieved and passing the data signals from the wanted band to a transmitter and/or receiver including first and second mixing means to process the data signals, typically using in-phase and quadrative data feeds to create a predefined representation of the wanted frequency band, to provide an output for receipt by at least one broadcast data receiver and at least the transmitter and/or receiver is provided as part of an integrated circuit rather than as separate connected components.</p> |
