Deinterlacing of mixed progressive and non-progressive sequences
OwnerMichael Evan Crabb, Donald Henry Willisinventors
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Abstract
A method (500) of converting interlaced video to progressive video can include receiving a video signal (505) representative of at least one picture and determining whether the at least one picture is progressive (510). Responsive to the progressive picture determination, a vertical synchronization signal can be selectively modified to identify whether a field previously sent and a field to immediately follow are from a same progressive picture (615, 640).
Claims23
A method of converting interlaced video to progressive video, said method comprising:
- receiving a video signal representative of at least one picture;
- determining whether said at least one picture is progressive;
- and
- responsive to said progressive picture determination, selectively modifying a vertical synchronization signal to identify whether a field previously sent and a field to immediately follow are from a same progressive picture.
A system for converting interlaced video to progressive video, said system comprising:
- a decoder for decoding an Moving Picture Experts Group (MPEG) video data stream to form an interlaced video signal, said MPEG video data stream specifying progressive and non-progressive pictures, wherein said decoder selectively pulse width modulates a vertical synchronization signal to identify which ones of consecutive fields are from a same progressive picture;
- and
- a deinterlacer coupled to said decoder, and converting said interlaced video signal to a progressive video signal in accordance with said selectively pulse width modulated vertical synchronization signal.
A decoder configured to convert an MPEG video data stream to an interlaced video signal, said MPEG video data stream specifying progressive and non-progressive pictures, wherein said decoder selectively modulates a width of a pulse forming a vertical synchronization signal to identify which ones of consecutive fields are from a same progressive picture.
Dependencies are inferred from the claim text.