| 摘要 |
PROBLEM TO BE SOLVED: To provide a detector and a detection method for detecting a 32 pull-down sequence. SOLUTION: An interlace video image (telecine video image) of 60 fields after 32 pull-down is inputted, the gradation difference (differential absolute value) between frames is calculated, and the differential absolute value is compared with five thresholds. An accumulation adder stores the compared result of one field. A flag information creation processing section creates a flag information table for indicating whether a current field is a repeat field having noise based on information from the accumulation adder. A repeat field determination section detects the 32 pull-down sequence from the table and detects whether the current field is the repeat one having noise. Based on the detected repeat field, interlace/progressive conversion is performed. COPYRIGHT: (C)2008,JPO&INPIT
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