High-performance adaptive binary arithmetic encoder

The invention discloses a high-performance adaptive binary arithmetic encoder which mainly solves the problems of low encoding speed and complicated structure of the existing binary arithmetic encoder. The encoder comprises a probability model storing module, a probability model updating module, an encoding state updating module, a normalization module and register groups, wherein a first register group is inserted between the probability model storing module and the probability model updating module, and a second register group is inserted between the encoding state updating module and the normalization module so as to form a three-level flow structure to improve the encoding speed by sufficiently using the parallelism of hardware; a caching register unit is adopted in the probability model storing module so that the read/write conflict of a probability model memory is effectively avoided; and a prefix zero detection unit is adopted in the normalization module so that the structure of the normalization module is simple and easy to implement with hardware. The high-performance adaptive binary arithmetic encoder disclosed by the invention has the characteristics of high encoding speed and simple structure, and can be applied to the real-time encoding of high-definition videos.