| 摘要 |
<p>Apparatus for sampling a signal parameter of a plurality of data signals is disclosed which comprises a plurality of sources (5) of data signals. Each data signal includes sequential groups of data. Each group of data in all of the data signals has the same fixed predetermined time duration, and includes sequential blocks of data. A plurality of parameter determining circuits (16) are each responsive to a respective one of the data signals, and produce sequential signals (COMPLEXITY) having values representing the signal parameter for each of the sequential blocks of data in the data signal. A plurality of accumulators (31) are each responsive to a respective one of the parameter representative signals, and produce a signal representing the cumulative parameter value of the data signal. A data sampler (31) is responsive to the plurality of accumulators to sample the cumulative parameter representative signals from all of the accumulators substantially simultaneously at time intervals equal to the fixed predetermined time duration, to reset all of the accumulators to zero, and to generate the control signal (CONTROL) based on the values of the plurality of cumulative parameter representative signals.</p> |
