| 摘要 |
PURPOSE:To rotate image data by 90 deg. or 180 deg. at a high speed without increasing the load of a CPU by providing a 90 deg. rotating circuit, a 180 deg. rotating circuit and a selection circuit. CONSTITUTION:The 90 deg. rotating circuit 1 rotating the input image data IN by 90 deg., the 180 deg. rotating circuit 2 rotating data by 180 deg. and the selection circuit 3 selecting either one of the outputs of the both circuits 1 and 2 are provided. Consequently, by inputting the image data IN to the 90 deg. rotating circuit 1 and the 180 deg. rotating circuit 2, it can be directly rotated by 90 deg. or 180 deg.. Moreover the selection circuit 3 can take out either one of them as an output image data OUT. Thus a CPU never do such application operations as to link two-dimensional data and one-dimensional data, thereby processing image data at a high speed. |
