Patent ID: 11924471
Assignee: QUALCOMM INCORPORATED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 26:
27. An apparatus for decoding video data, the apparatus comprising:
means for setting a context index variable to a first value, wherein the first value for the context index variable is associated with a first context;
means for context decoding a first bin for a syntax element indicating a transform using the first context;
means for determining a new value for the context index variable based on a value of the first bin wherein the means determining the new value for the context index variable based on the first bin comprises:
in response to the first bin being equal to a first integer, keeping the context index variable at the first value, wherein the context associated with the new value is the same as the context associated with the first value, wherein the first integer equals one of 0 or 1;

means for context decoding a second bin for the syntax element indicating the transform using a context associated with the new value, wherein the context associated with the new value is one of multiple contexts from a set of available contexts for the second bin;
means for determining an inverse transform from a set of inverse transform candidates based on the first bin and the second bin; and
means for applying the inverse transform to a set of coefficients to determine a block of residual data.