| 摘要 |
The correlator includes a plurality of charge storage cells, each including first and second storage regions and corresponding first and second electrodes insulatingly overlying the storage regions. Into each of the first charge storage regions a respective quantity of charge proportional to a respective sample of an analog signal is introduced. A series of voltage waveforms are developed each successive waveform being identical to the period of a preceding waveform except delayed by the period of a cycle of the waveform in response to a digital reference word. Each of the voltage waveforms are applied to a respective one of the second electrodes of the cells for controlling the transfer of charge between the first and second charge storage regions thereof, a transfer in one direction representing a multiplication of an analog sample by +1 and a transfer in the other direction representing a multiplication of an analog sample by -1. The total net charge transferred to and from the first charge storage regions during a common period of the voltage waveforms is sensed to produce a summation of the products of each of the cells.
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