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基于ISA总线接口电路的设计及研究 总被引：3，自引：0，他引：3
阐述了基于ISA总线的16位I/O和16位DMA接口电路设计的原理及特点.给出了具体的实现电路、软件编程实例,以及实测的速度指标. 相似文献
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With the development of general-purpose processors (GPP) and video signal processing algorithms, it is possible to implement a software-based real-time video encoder on GPP, and its low cost and easy upgrade attract developers' interests to transfer video encoding from specialized hardware to more flexible software. In this paper, the encoding structure is set up first to support complexity scalability; then a lot of high performance algorithms are used on the key time-consuming modules in coding process; finally, at programming level, processor characteristics are considered to improve data access efficiency and processing parallelism. Other programming methods such as lookup table are adopted to reduce the computational complexity. Simulation results showed that these ideas could not only improve the global performance of video coding, but also provide great flexibility in complexity regulation. 相似文献
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OBSTACLE DETECTION BY ALV USING TWO 2D LASER RANGE FINDERS 总被引：6，自引：0，他引：6
ＩＮＴＲＯＤＵＣＴＩＯＮＯｂｓｔａｃｌｅａｖｏｉｄａｎｃｅｉｓａｎｅｓｓｅｎｔｉａｌｔａｓｋｏｆｔｈｅＡＬＶ .Ｔｏａｃｈｉｅｖｅｔｈｉｓ,ａｑｕｉｃｋａｎｄｒｅｌｉａｂｌｅｄｅ ｔｅｃｔｉｏｎｏｆｏｂｓｔａｃｌｅｓｉｓｖｅｒｙｉｍｐｏｒｔａｎｔ.Ｓｅｖｅｒａｌｃｌａｓｓｅｓｏｆａｃｔｉｖｅｓｅｎｓｏｒｓｃａｎｂｅｕｓｅｄｆｏｒｔｈｉｓｐｕｒ ｐｏｓｅ .Ａｌａｓｅｒｒａｎｇｅｆｉｎｄｅｒ (ＬＲＦ)ｃａｎｓｕｉｔａｂｌｙｂｅｕｓｅｄｔｏｄｅｔｅｃｔｏｂｓｔａｃｌｅｓａｈｅａｄｏｆｔｈｅＡＬＶ .3ＤＬＲＦｓ… 相似文献
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INTRODUCTION processors and digital signal processors (DSP), video encoding on these processors without hard- Digital video compression techniques have ware assistance may be an alternative with advan-played an important role in the field of telecom- tages of short development cycles, easy upgrademunication and multimedia systems where band- and low cost. Video coding consumes much com-width and storage resources are limited. The prime putation time, and so, is a problem for real-timeimp… 相似文献
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ＩＮＴＲＯＤＵＣＴＩＯＮＦｌｕｉｄｄｙｎａｍｉｃｓｒｅｓｅａｒｃｈｒｅｌｉｅｓｏｎｔｈｅｅｘｐｅｒｉ ｍｅｎｔａｌｏｂｓｅｒｖａｔｉｏｎａｎｄｖｉｓｕａｌｉｚａｔｉｏｎｏｆｆｌｕｉｄｆｌｏｗｐｈｅｎｏｍｅｎａ (Ｋａｗａｓｈｉｍａ,Ｇ .ｅｔａｌ.,1 995;Ｏｈ ｂａ ,Ｋ .ｅｔａｌ.,1 995) .Ａｄｖａｎｃｅｓｉｎｃｏｍｐｕｔｅｒｔｅｃｈｎｏｌｏｇｙａｌｌｏｗｆｏｒｍｏｒｅａｃｃｕｒａｔｅｓｉｍｕｌａｔｉｏｎａｎｄｃｏｍｐｕｔａｔｉｏｎｆｏｒｔｈｉｓｐｈｅｎｏｍｅｎｏｎ .ＤｉｇｉｔａｌＰａｒｔｉｃｌｅＩｍａｇ… 相似文献
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ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｒｅａｒｅｃｏｎｓｔａｎｔｌｙｉｎｃｒｅａｓｉｎｇｄｅｍａｎｄｓｉｎｒｅｃｅｎｔｙｅａｒｓｆｏｒｍｕｌｔｉｍｅｄｉａａｐｐｌｉｃａｔｉｏｎｓ,ｖａｒｉｏｕｓｉｍａｇｅ/ｖｉｄｅｏ ｐｒｏｃｅｓｓｉｎｇｍｅｔｈｏｄｓｉｎｃｌｕｄｉｎｇｉｍａｇｅｅｎｈａｎｃｅｍｅｎｔａｎｄｒｅｓｔｏｒａｔｉｏｎ ,ｖｉｄｅｏｃｏｍｐｏｓｉｔｉｏｎ ,ｃｏｌｏｒｃｏｍｐｅｎｓａｔｉｏｎ ,ａｎｄｓａｍｐｌｅｓｔｒｕｃｔｕｒｅｃｏｎ ｖｅｒｓｉｏｎ (ｄｏｗｎ ｃｏｎｖｅｒｓｉｏｎａｎｄｕｐ ｃｏｎｖｅ… 相似文献
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