| 摘要 |
When a data input signal having R plus X groups of M digits is received, the digits are segmented such that X different first counter-detectors receive M digits and a second counter-detector receives the R digits. The counter-detectors determine a number of most significant count digits leading a most significant non-count digit and detect the presence of a non-count digit. A decoder receives the outputs of the first counter-detectors and, responsive to a non-count digit detection in a most significant group of M digits having a non-count digit, communicates the corresponding count number to a concatenator. A third counter-detector determines and communicates a number of most significant groups of M digits having no non-count digits. An output of the third counter detector is concatenated with an output of the decoder where the decoder output is represented by Z digits where M=NZ (X, M, R, N, and Z are non-negative integers). The concatenation represents the number of leading count digits. If R is non-zero, the second counter-detector determines a number of most significant count digits leading a most significant non-count digit and detects the presence of a non-count digit in the R most significant bits. An adder then adds R to the concatenation. A multiplexer selects the number of leading count digits in the R bits if the R bits contain a non-count digit else the multiplexer selects the concatenation plus R.
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