High speed bit flat surface decoding method and circuit suitable for Jpeg2000 standard

The invention discloses a method and an electric circuit structure for bit plane quick decoding of EBCOT coefficient in coding and decoding standard of ISO/IEC JPEG2000 image compressing so as to improve JPEG2000 EBCOT decoding efficiency. The position plane decoding electric circuit of the invention can make the original coding block expansion analog pixel to form a new coding block being divided into three bank storage coefficients and coefficient state information, so the invitation capacity of a storage can be reduced, the coefficient can be scanned by using 6x4 window to accelerate the decoding process, simultaneously, a parallel technology is used to further improve the total EBCOT decoding throughput. The invention can improve JPEG2000 image decoding efficiency and can be widely used in digital image product series.