| 摘要 |
<p>A circuit arrangement for processing sampled analogue electrical signals comprises means for combining (9) in predetermined proportions the input sample current (6) in the present sample period with current(s) derived from input sample current(s) in one or more preceding sample periods (7) and means for deriving the processed output signal as or from the combined current produced by the combining means in successive sample periods. The circuit arrangement further comprises means for scaling a current, which scaling means comprises a first branch (T1) for receiving a current to be scaled, second and third branches (T2,T3) for producing first and second sub-output currents which are proportional to the received current, means for forming the difference (2) between the first and second sub-output currents, and means for feeding the difference current to the output (3) of the current scaling means.</p> |
