Patent ID: 11876990
Assignee: MEDIATEK INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A video residual decoding apparatus for applying residual decoding to a transform block that is divided into sub-blocks, comprising:
a residual decoding circuit, arranged to enter a coefficient loop for decoding one or more syntax elements at each of coefficient positions within a sub-block that has at least one non-zero coefficient level, wherein the sub-block is included in the transform block; and
a storage device;
wherein during the coefficient loop, the residual decoding circuit is arranged to record state information in the storage device, where the state information is associated with states of dependent quantization at coefficient positions within the sub-block; and
wherein the residual decoding circuit is arranged to refer to at least the state information recorded in the storage device for updating transform coefficient levels of the sub-block.