Patent ID: 9426466
Filing Date: 2016-08-23
CPC Classification: H04N

Claim Text:
1. A method of decoding video data, the method comprising: determining a sub-sampling format for a chroma transform block (TB); based on the sub-sampling format for the chroma TB, identifying one or more corresponding luma TBs; determining if a size of a coding unit comprising the chroma TB is equal to a smallest enabled size for coding units; in response to determining that the size of the coding unit is equal to the smallest enabled size, receiving, for each of the one or more corresponding luma TBs, a flag indicating if the corresponding luma TB is coded using a transform skip mode; and based on a number of the one or more corresponding luma TBs coded using the transform skip mode being greater than or equal to a threshold value, determining that the chroma TB is coded in the transform skip mode.