| 摘要 |
<p>38/SO1434 S81P63 Electronic editing of a recording digital signal is carried out such that any errors created by the editing process are correctable. The digital signal is given protection from errors, for example by a cross-interleaving technique, so that m-tupple errors in a code sequence length can be corrected when the signal is reproduced. The edit cut-in and cut-out points are controlled so that if multiple editing is carried out, fewer than m+l errors will be generated, and the edited signal will be free of clicks caused by uncorrectable error. The permitted points for cut-in and cut-out can be separated by a distance greater than the code sequence length. Alternatively, if cross-interleaving is carried out such that digital words are grouped into blocks and provided with respective different delays that are integral multiples of D block lengths, the interval between such points can be selected to correspond to T block lengths, such that the least common multiple of D and T is greater than the code sequence length.</p> |
