3:2 Pull-down detection

Details 3:2 Pull-down detection 3:2 Pull-down detection

2007-04-10

2007-04-10

Vo, Tung (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

Reexamination Certificate

active

10014974

ABSTRACT:
In one embodiment, a 3:2 pull-down detection component of a video encoder uses motion vectors to determine whether a repeated field exists in a video sequence. The 3:2 pull-down detection component uses field motion vectors determined by a motion estimator and compares the field motion vectors to a threshold to determine whether a repeated field exists. If a repeated field exists, a video encoder can then eliminate the repeated field.

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R.J. Schutten, et al., “Real-Time 2-3 Pull-Down Elimination Applying Motion Estimation/Compensation in a programmable Device”, IEEE Transactions on Consumer Electronics, vol. 44, No. 3, Aug. 1998, pp. 930-938.
M.C. Chen, et al., “a High Accuracy Predictive Logarithmic Motion Estimation Algorithm for Video Coding”, IEEE 1995, pp. 617-620.

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