Entropy coder and realization method thereof
An entropy encoder and entropy coding technology, applied in the field of entropy coding hardware design, can solve problems such as large computational complexity
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[0076] Entropy coding in AVS uses fixed-length coding, k-order exponential Golomb coding and CA-2D-VLC coding, and different syntax elements use different coding methods. The specific implementation of the entropy encoder based on the AVS video coding standard proposed by the present invention is as attached Figure 6 , including the following steps:
[0077] 1. The first-level pipeline workflow
[0078] Step 1.1, entropy coding top-level control detection work enable signal; if not enabled, wait here, otherwise enter a step.
[0079] Step 1.2, check the status of each input and output FIFO, if ready, go to step 1.3, otherwise report an error to the system.
[0080] Step 1.3: Scan the residual information of the macroblock and perform run-length coding to obtain the run-level pair. If the operation is completed, go to step 1.4; otherwise, continue scanning.
[0081] Step 1.4, take out the run-level from the FIFO, and perform 2D-VLC encoding on it. If the encoding of all ru...
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