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

Claim 8:
9. A device for decoding video data, the device comprising:
a memory configured to store video data;
one or more processors implemented in circuitry and configured to:
set a context index variable to a first value, wherein the first value for the context index variable is associated with a first context;
context decode a first bin for a syntax element indicating a transform using the first context;
determine a new value for the context index variable based on a value of the first bin wherein to determine the new value for the context index variable based on the first bin, the one or more processors are further configured to:
in response to the first bin being equal to a first integer, keep the context index variable at the first value, wherein the context associated with the new value is the same as the first context associated with the first value, wherein the first integer equals one of 0 or 1;

context decode 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;
determine an inverse transform from a set of inverse transform candidates based on the first bin and the second bin; and
apply the inverse transform to a set of coefficients to determine a block of residual data.