| 摘要 |
An apparatus for detecting whether an image signal is in a film mode, includes a first field buffer (120), a second field buffer (140) and a third field buffer (160) that sequentially buffer respective fields of the image signal by order of input, using the respective fields stored in the first, the second and the third field buffers. The apparatus for detecting whether an image signal is in the film mode, includes a motion information calculator (200) for calculating motion information for the respective fields by comparing variations in the motion in the respective fields stored in the first and the third field buffers (120, 160), a motion information buffer (300) for storing the motion information in units of a predetermined number of fields, and a pattern matching unit (400) for determining whether the image signal is in the film mode by comparing the motion information of the respective fields stored in the units of the predetermined number of fields with a reference pattern. The reference pattern may have a predetermined periodicity in accordance with a 3:2 pull-down conversion, and by subsequently determining whether the motion information matches the pattern a telecine signal may be identified. Independent claims are included for dividing the detected motion by a positive integer prior to comparison of the motion patterns and for determination of motion by counting the number of motion blocks in a field. |
