| 摘要 |
PURPOSE:To achieve normal playback sound without misrecongnition and miscorrection, by comparing data delayed by one horizontal sweep section, making error flag as error compulsively, and transmitting the error with data to memories. CONSTITUTION:If dropout takes place during playback, a dropout compensation circuit of a VTR is operative, and a signal Hn in one horizontal sweep section is introduced to an error checking block in the order of Hn-1, Hn, Hn+1. If the flag in error is correct at 0 and wrong at 1, 0 is outputted to the Hn-1 introduced at first, and a coincidence signal 1 is outputted by a comparison circuit to the Hn-1, and it is introduced to an error detection circuit to output 1. Thereafter, the comparison circuit outputs a dissidence signal 0 to the Hn+1, the error detection circuit outputs 0, allowing to indicate that the input Hn is in error. |
