Patent ID: 9307186
Filing Date: 2016-04-05
CPC Classification: H04N

Claim Text:
1. An apparatus for receiving an input video sequence having an input frame rate and forming an output video sequence having an output frame rate different from an input frame rate, the apparatus comprising: a temporal synchronisation analyser for dividing the input video sequence into successive groups of frames, each group of frames containing N a motion analyser for analysing motion over the frames of each group of frames to provide a group motion measure representing motion within each respective group of frames; an interpolator for performing interpolation on a group of N a synchroniser for deleting or repeating an identified frame from the group of N a switcher configured to switch group-by-group, depending upon a motion measure of the corresponding group of frames, between the interpolator and the synchroniser to form an output video sequence having the output frame rate different from the input frame rate, wherein in the apparatus there is a cycle in a spacing between an input frame position and the output frame position closest in time to that input frame position, the cycle being defined by a ratio between the input frame rate and the output frame rate, wherein the temporal synchronisation analyser is configured to divide the input video sequence into successive groups of frames, with each group boundary being positioned at an input frame position that has a spacing from the closest output frame position less than a predetermined spacing threshold.