G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 20/12 (2006.01) H04N 7/01 (2006.01) H04N 7/26 (2006.01)
Patent
CA 2118955
Device for encoding sequences of frames constituted by film-type images and video-type images, and corresponding decoding device. A device of this type provides the possibility of encoding sequences of frames constituted by video-type images of a first frequency (for example, 30 Hz) and film-type images whose original frequency is lower than this first frequency (for example, 24 Hz) and which are converted by means of the "3:2 pulldown" technique. This encoding device comprises: - means (53, 56, 57 for detecting the sequences of film-type images from the stream of input data, - a device (58) for preprocessing these sequences for realising an inverse conversion of the frequency by eliminating, before encoding, the redundant information introduced by the use of the "3:2 pulldown" method. Application: Transmission of film-type images on American or Japanese television systems operating at 60 Hz. Reference: Fig. 8.
Fetherstonhaugh & Co.
Koninklijke Philips Electronics N.v.
Philips Electronics N.v.
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