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

Claim 16:
17. A video residual decoding method for applying residual decoding to a transform block that is divided into sub-blocks, comprising:
regarding a sub-block having at least one non-zero coefficient level, entering a coefficient loop for decoding one or more syntax elements at each of coefficient positions within the sub-block, wherein the sub-block is included in the transform block, the coefficient loop comprises a plurality of decoding passes that are arranged to operate in sequence, the plurality of decoding passes comprise one decoding pass and at least one other decoding pass prior to said one decoding pass, and the video residual decoding method does not enter the coefficient loop for decoding another sub-block included in the transform block before the plurality of decoding passes of the coefficient loop for decoding the sub-block included in the transform block are completed;
during said at least one other decoding pass, recording, by a storage device, side information indicative of specific coefficient positions at which specific syntax elements need to be decoded in said one decoding pass; and
during said one decoding pass, referring to the side information recorded in the storage device for selecting the specific coefficient positions within the sub-block, and decoding the specific syntax elements at the specific coefficient positions, respectively.