Back to results
US 8,441,573 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
Life of this patent
Estimating the term…
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).
Claims15
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 coded frames and inserted isolated coded fields;
- wherein the circuitry is operable to present a video sequence for interlaced display, and
- wherein the circuitry is operable to determine a decoding time or a presentation time for a particular picture based upon at least one decoding time stamp (DTS) or at least one presentation time stamp (PTS) for a previously decoded picture.
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 coded frames and inserted isolated coded fields,
- wherein the circuitry is operable to present a video sequence for interlaced display, and
- wherein the circuitry is operable to determine a decoding timestamp for a particular picture of the encoded film material without knowledge of a film mode state of the particular picture.
A method for decoding video information, the method comprising:
- determining whether to use a 3:2 pull-down format;
- and
- if a decoder determines to use the 3:2 pull-down format, decoding the encoded film material and presenting a video sequence without using a film mode flag, and
- if the decoder determines not to use the 3:2 pull-down format, detecting and removing the inserted isolated coded fields from the encoded film material and presenting a video sequence for display.
1 more element
Dependencies are inferred from the claim text.