| 摘要 |
A digital coding apparatus of the present invention consists of a transform circuit, a variable-length coding circuit, and a fixed-length data generating circuit. The transform circuit performs a discrete cosine transform with respect to inputted image data and generates a DCT coefficient from a DC coefficient and AC coefficients. The variable-length coding circuit codes the DC coefficient and AC coefficients to a DC code and AC codes. The fixed-length data generating circuit generates a leading item of fixed-length data from the above DC code and a leading portion of the above AC codes, while sequentially generating items of fixed-length data other than the leading one from the remaining portion of the above AC codes. Consequently, the process of storing the DC code in the fixed-length data and the process of storing the AC codes in the fixed-length data can be performed collectively by pipeline processing. <IMAGE> |
