| 摘要 |
<p>This invention concerns an analog-to-digital correlator with programmable coefficients with values of +1, -1 or 0. This correlator comprises a charge-transfer shift register to receive samples of the analog input signal for correlation, and two programmable digital-output shift registers, followed by memories to establish coefficients with values of +1, -1 or 0. Depending on the signal available at the digital register outputs: reading of charges is blocked on the analog register, corresponding to establishment of coefficient 0; reading of charges occurs, reaching either the positive or the negative input of a differential amplifier, corresponding to the establishment of coefficient +1 or -1.</p> |
