| 摘要 |
The multi-port memory of the present invention is provided with a random port for describing the graphic data, a first serial port for reading the data to be displayed, and a second serial port for writing the dynamic picture image data and which has a transfer mask register to transfer the dynamic picture image to a window. The multi-port memory enables multi-window display of the dynamic picture images in a simple circuit structure, with ensuring high-speed erasure and scroll of the multi-window.
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