| 摘要 |
A marker inserting part 2 adds a sync signal is added to an input image signal 1 in its available area, then a signal processing part 4 performs signal processing on a yet-to-be processed image signal 3 added with the sync signal, and a marker detecting part 6 detects the sync signal from a processed image signal 5. Based on the sync signal added to the input image signal 1 and the sync signal detected from the processed signal 5, displacement detecting part 7 detects displacements of pixels or lines of the processed image signal 5 and generates displacement information 8 accordingly, and an image sync correcting part 9 corrects displacements of pixels or lines of the processed image signal 5, based on the displacement information 8.
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