Personal Video Recorder
AssigneeARRIS Enterprises LLC
InventorsMandayam A. Narasimhan, Robert O. Eifrig
Life of this patent
Estimating the term…
Abstract
A sequence of picture slices is encoded as reference slices and non-reference slices, wherein the reference slices include B slices, by forming, for each B slice, at least one data packet containing data values derived from brightness and color information pertaining to the slice. The data packet for each B slice includes a header element indicating whether the B slice is a reference slice. The header element of each reference B slice has a value that depends on depth of the reference B slice in a hierarchy of discardability.
Claims9
1-19. (canceled)
A method of decoding a plurality of coded pictures provided in a bitstream, the method comprising:
- identifying each of the plurality of coded pictures as being one of a reference picture or nonreference picture;
- determining a hierarchy of data dependency where each of the coded pictures is located, wherein at least one level in the hierarchy of data dependency identifies discardable pictures being coded pictures associated with a nal_ref_idc field equal to 0, and at least one level in the hierarchy of data dependency identifies discardable pictures being coded pictures associated with a nal_ref_idc field equal to 0 or equal to non-zero;
- determining whether to decode or discard each of the coded pictures based on where the coded picture is located within the one or more levels in the hierarchy of data dependency;
- and
- not decoding the coded pictures in the bitstream that are determined for discarding.
Dependencies are inferred from the claim text.