| 摘要 |
The sub-screen data storage control unit of the present invention is provided with writing address generation circuit means to generate writing addresses for the row direction and the column direction of the storage unit and reading address generation circuit to generate reading addresses for the row direction and the column direction of said storage unit. For division of sub-screen, it further comprises a selection signal generation circuit to generate a section selection signal to specify one of the divided sections obtained from division of the storage area of the storage, and address division circuit to sort row direction writing addresses and column direction writing addresses for each of the divided sections in the storage area according to the section selection signal from the selection signal generation circuit.
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