| 摘要 |
PURPOSE: A method for detecting errors by clipping is provided to search video signals out of a range recommended by ITU-R BT. 601-5 by restoring the video signals after clipping the signals into the range and carrying out encoding, thereby increasing the precision of the error detecting performance. CONSTITUTION: A method for detecting errors by clipping includes the steps of decoding video signals input by a receiver via a radio channel from a transmission part for kth macro block(S1), and checking whether an index exists corresponding to the decoded macro block with reference to a code book(S2). Otherwise, the decoded macro block is determined as invalid code and an error is detected. If the corresponding index exists, it is checked whether respective video signals of Y,Cb,Cr are in a value range recommended by ITU-R BT.601-5(S3,S4). Otherwise, an error is detected. The detected errors are corrected through error hiding(S6), and the corrected kth macro block is stored to a buffer(S5).
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