| 摘要 |
<p>A nest level judging device is operable in response to tokens each of which is given a nest level selected from first through N-th nest levels as a selected level and each of which comprises a data length code and a data identifier code including a nest bit. A detecting circuit (50) detects the nest bit to produce a nest bit detection signal. Responsive to selection signals, a selecting circuit (30) delivers the data length codes of the respective tokens as first through N-th data codes. A processing circuit (40) processes the first through the N-th data codes into a processed signal which is N bits long. Responsive to the nest bit detection signal and the first through the N-th data codes, a level decision circuit (60) decides a decided nest level indicative of, as the selected level, one of the first through the N-th nest levels that is selected as the selected level. The level decision circuit (60) supplies the decided nest level as one of the selection signals to the selection circuit.</p> |
