| 摘要 |
<p>An arrangement for concealing digital data which includes an inner decoder (120) which checks a digital data signal for errors; generates a corresponding erasure flag for indicating whether or not the detected error is to be corrected; and an outer decoder (140) which generaters a corresponding concealment flag for indicating whether or not the digital data is to be concealed. The arrangement also includes means (170) which detects an unflagged error in the digital data and modifies the concealment flag of the digital data, an error concealer (150) being capable of responding to the modified concealment flag. <IMAGE></p> |
