| 摘要 |
Imaging Parallel Interface Random Access Memory (IPIRAM). An integrated circuit imaging device presents to external circuitry as a static, parallel-interface RAM. Internally, a two-port RAM has access resolved by contention logic to permit access by external circuitry or internal imaging. The RAM is organized as one or more image buffers and a set of memory-mapped control and status registers. The imaging array, when active, automatically fills an image buffer with image data, which may be accessed by external circuitry in random-access fashion. Control and status registers may be used to start and stop the imaging process, set and interrogate imaging parameters. The IPIRAM may also include auxiliary processing circuitry to perform functions such as image compression, scaling, edge and feature extraction, and the like.
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