| 摘要 |
PURPOSE:To attain the reduction (so called, down-sizing) of the circuit scale of a bit serial digital signal processor in which orthogonal transformation such as discrete cosine transformation or each kind of digital signal processing can be executed by a bit serial arithmetic operation. CONSTITUTION:Forward disk cosine transformation is operated to input signals f0, f1,...f7 by a bit serial arithmetic operation, and output signals F0, F1,...F7 are obtained. The parts denoted by F in the flip flops are intrinsic circuit parts which are not used at the time of inverse discrete cosine transformation. Orthogonality at each stage sometimes disappears at the time when derived from a prototype (basic) signal flow. However, circuit blocks having orthogonality can still exist if one specifies the circuit blocks without paying attention to the stage. |
