论文部分内容阅读
以美国ＴＩ公司的第五代ＤＳＰ器件ＴＭＳ３２０Ｃ５０组成的水下视频图像数字化系统， 利用独特的软件采集方法灵活地实现了３种不同点阵数的图像数据采集，系统同时采用“内 存页扩展”的方式实现了可以达４ Ｇｂ（ｂｙｔｅｓ）容量的外部数据存贮器的扩展。系统还设计了 Ｃ５０芯片与高速 Ａ／Ｄ及存取时间为７０ ｎｓ的静态 ＲＡＭ两种不同速度外设的接口电路。该系 统较好地实现了水下视频图像模拟信号在规定时间内的数字化以及相应的数据处理。
The underwater video image digitization system composed of TMS320C50, which is the fifth generation DSP device of American TI Company, utilizes the unique software acquisition method to flexibly realize the image data acquisition of three different dot matrix numbers. The system also adopts the “memory page extension” The way to achieve the expansion of external data memory up to 4 Gb (bytes) capacity. The system also designed the C50 chip and high-speed A / D and access time of 70 ns static RAM two different speed peripheral interface circuit. This system can realize the digitalization and corresponding data processing of underwater video image analog signal within the specified time.