Flexible cadence follower for film in video

摘要

A system for cadence break detection is provided. The system includes a field system receiving a plurality of fields of image data. A threshold system generates a cadence break signal if a difference in two fields exceeds a predetermined threshold. A sequence system generates the cadence break signal if a sequence of differences between the plurality of fields does not match a predetermined sequence.

主权项

1. A system for cadence break detection comprising:
a field system configured receiving a plurality of fields of image data, each field of image data including sequence data for indicating a film to video conversion sequence cadence, and for generating a film to video conversion sequence cadence data; and a cadence following circuit configured to receive the film to video conversion sequence data and to generate a cadence break signal comprising:
a threshold system configured to generate the cadence break signal if a difference in two fields exceeds a predetermined threshold; a sequence system configured to generate the cadence break signal if a sequence of difference between the plurality of fields does not match a predetermined sequence; and a free run counter configured to receive a field end signal and sequence number data and to generate a plurality of bitmap select fields.