| 摘要 |
An apparatus and method are disclosed for processing successive frames of data to provide a plurality of data streams containing the data in different orders. In an illustrated embodiment, two different data streams are output for incoming frames of video data. Pixels are grouped from an incoming current video frame to provide successive pairs thereof for storage in a first memory bank at a first clock rate phi . Stored pixel pairs are read from a second memory bank containing a previous video frame at a second clock rate 2 phi while the pairs of pixels from the current video frame are being stored in the first memory bank at rate phi . This provides two pairs of pixels from the previous video frame for each one pair of pixels stored from a current video frame. The pixel pairs from the previous video frame output from the second memory bank are combined into two data streams, each providing the pixels in a different order. The memory banks are alternated to process successive frames.
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