An apparatus for detecting whether an image signal is in a film mode,
includes a first field buffer, a second field buffer and a third field
buffer 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 calculating a motion information of the respective fields by
comparing variations of a motion in the respective fields stored in the
first and the third field buffers, a motion information buffer storing
the motion information in unit of a predetermined number of fields, and a
pattern matching unit determining whether the image signal is in the film
mode by comparing the motion information of the respective fields stored
in the unit of the predetermined number of fields with a pattern of the
field having a predetermined periodicity in accordance with a 3:2
pull-down conversion, and by subsequently determining whether the motion
information matches the pattern.