| 摘要 |
Digital filter able to receive, on an input line (e), data In which follow one another at specified time intervals and which comprises means (M) for multiplying each of the last k data by an associated coefficient Ci; means (A) for adding the results of each multiplication so as to furnish at its output a quantity of the form Co.In + C1.In - 1... + Cn-k + 1.In - k + 1; memory means for storing k specified coefficients and the last k data; and sequencing means (2) for addressing these memory means in such way that the coefficients and the corresponding data are furnished to the multiplication means. The memory means are formed by a single random access memory (RAM) (1) able to store the k specified coefficients and the last k data introduced, by multiplexing, through the input of the memory and the sequencing means (2) are arranged in such a way that, at the end of a cycle, the new datum which arrives on the input line is substituted, in the memory, for the oldest datum. <IMAGE>
|
