Patent ID: 9462275
Filing Date: 2016-10-04
CPC Classification: H04N

Claim Text:
1. A method of decoding video data, the method comprising: receiving entropy encoded data representing a value of a first split flag associated with an array of transform coefficients for a first chroma component of the video data, wherein the value of the first split flag indicates whether the array of transform coefficients for the first chroma component is divided into smaller transform blocks at a level within a first residual quad tree (RQT) partitioning structure, and wherein the first chroma component is partitioned according to the first RQT partitioning structure; determining that at least one of a luma component or a second chroma component of the video data is included in a previously-decoded component of the video data with respect to the first chroma component being decoded, wherein the previously-decoded component of the video data is partitioned according to a second RQT partitioning structure; determining a context for decoding the entropy encoded data representing the first split flag according to context adaptive binary arithmetic coding (CABAC) at least in part by using a value of a second split flag associated with an array of transform coefficients for the previously-decoded component of the video data, wherein the second split flag is at a corresponding level within the second RQT partitioning structure with respect to the level associated with the first split flag within the first RQT partitioning structure; based on the determination that at least one of the luma component or the second chroma component of the video data has been decoded prior to the first luma component being decoded, entropy decoding the data representing the value of the first split flag according to CABAC using the context determined for the first split flag; and reconstructing the video data based on the value of the first split flag.