| 摘要 |
A method and apparatus for providing a multi-layer sprite graphic function in video equipment having an on-screen-graphic function where the multi-layer sprite graphic function is realized in hardware to accomplish a smooth graphic. The multi-layer sprite graphic apparatus includes a controller for generating scan address data, a frame memory for outputting video data stored therein according to the scan address data, a window pulse generator for receiving the scan address data and for generating a window pulse which represents scan address data which is included in a window area, an address generator for generating read address data according to the window pulse, a sprite memory for storing sprite graphic data and outputting the stored sprite graphic data according to the read address data, and a data selector for selecting and outputting one of the data output from the frame memory and the sprite memory according to the presence or absence of the data output from the sprite memory.
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