| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an apparatus for generating JPEG data which can alleviate a CPU load and can realize an acceleration when the JPEG data is generated. SOLUTION: The method for generating the JPEG includes a step of determining a size of a header according to a parameter (step S2), and calculating a size of offset data so that the size of the header is divisible by a data quantity of 1DMA transfer (step S3). The method further includes then, a step of setting the size of the offset value and its other parameter to a header engine 4 (step S4), starting the header engine 4 (step S5), and storing header data in a storage unit 6. This header data are added by the offset data of the size at a head of an SOI (OxFFD 8), and image data are written in the storage unit 6 continuously to the header data without intermediary of the invalid data. COPYRIGHT: (C)2005,JPO&NCIPI
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