| 摘要 |
PROBLEM TO BE SOLVED: To reduce a processing time of an image pickup device. SOLUTION: A raster block converting memory 21 uses an SRAM or the like which reads/writes simultaneously, and address control of the raster block converting memory 21 is constituted in a ring buffer configuration, whereby data read out next from a memory can be stored at an address which is finished reading out data in block order, and this can cause to decrease memory capacity. When image data is read out from a memory 4, all the data including data of a neighboring MCU except for data necessary for constituting a MCU of the address accessed to the memory 4 are held in the raster block converting memory 21. An access frequency to the memory 4 is minimized, thereby restricting increase in a processing time.
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