| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a line buffer circuit which can perform a read operation and a write operation at high speed without increasing the circuit size. Ž<P>SOLUTION: When performing a data writing processing into a single port memory 65, data corresponding to a predetermined number of pixels that are packed by a data packing section 64, are written together into the single port memory 65. When performing data reading and processing from the single port memory 65, the data corresponding to predetermined number of pixels are read out together from the single port memory 65. After the data writing processing corresponding to a predetermined number of pixels into the single port memory 65 are performed, and before next data corresponding to the predetermined number of pixels that are to be written into the single port memory 65 are input, the data reading from the single port memory 65 is performed. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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