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US 7,876,380 B2Granted
System and method of transmission and reception of progressive content with isolated fields for conversion to interlaced display
AssigneeBroadcom Corporation
InventorsSherman (Xuemin) Chen, Alexander G. MacInnis
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Abstract
Systems and methods of coding progressive content with isolated fields for conversion to interlaced display are provided. Some systems and methods may find use in, for example, digital video compression systems and methods. Film material may be encoded as video material with an intended field polarity and an explicit 3:2 pull-down operation for interlaced display (e.g., a 30-frames-per-second display).
Claims24
A video decoder circuit comprising:
- circuitry operable to decode encoded film material that has been encoded with a field polarity and a 3:2 pull-down operation, where the encoded film material comprises inserted isolated fields;
- and
- wherein the circuitry is operable to decode the encoded film material and to present a video sequence without using a film mode flag.
A video decoder circuit comprising:
- circuitry operable to decode first encoded film material that has been encoded with a field polarity and a 3:2 pull-down operation, where the first encoded film material comprises inserted isolated fields;
- wherein the circuitry is operable to decode second encoded film material that has not been encoded with a field polarity and a 3:2 pull-down operation;
- and
- wherein the circuitry is operable to decode the first encoded film material and the second encoded film material at a frame rate and buffer removal times that are consistent between the first encoded film material and the second encoded film material.
1 more element
A video decoder circuit comprising:
- circuitry operable to decode encoded film material that has been encoded with a field polarity and a 3:2 pull-down operation, where the encoded film material comprises inserted isolated fields;
- and
- wherein the circuitry is operable to derive timestamp information from presentation times of previous pictures and a frame rate or a field rate indicated in a video stream.
Dependencies are inferred from the claim text.