| 摘要 |
PURPOSE: A device and a method for detecting a film mode of an image signal are provided to determine a film mode of an image signal by comparing field patterns of 3:2 pull-down with quantized values of motion data, thereby reducing the calculation amount for detecting the film mode. CONSTITUTION: A device detecting a film mode of an image signal includes a field buffer part(100), a motion data calculation part(200), a motion data buffer(300), and a pattern matching part(400). The motion data calculation part compares respective fields stored to first and third field buffers(120,160) and calculates motion data between the fields. The motion data buffer stores and outputs the motion data of the respective fields calculated by the motion data calculating part. The pattern matching part compares the motion data stored in the motion data buffer with a field pattern having a predetermined period according to the 3:2 pull-down of an image signal, so that the pattern matching part determines the field mode of the image signal according to whether the motion data is matched with the field pattern. |
