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介绍了一种可以加密ATM网络的声音、数据、图像信息,其上限速率为622Mbps的ATM网络线路加密机设计构想,设计构想考虑了密钥管理功能的实现。 相似文献
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A pre-pumped passively Q-switched Nd:YAG/Cr: YAG microchip laser is demonstrated with a peak power of 7.5 kW at pulse repetition rate of serveral kilohertzs. The full-width at half-maximum (FWHM) is 734 ps, and the pulse energy is 5.5 μJ with a fundamental spatial mode. In this system, the pre-pumped microchip laser of Nd: YAG/Cr: YAG wafer which is bonded through the thermal-bonding technique has achieved a time jitter value of 12 μs and a Q-switched amplitude instability of 1.26% (1δ) through the pre-pumped modulation technique. 相似文献
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在三网融合的背景下,多屏业务之间存在关联与互通的问题,采用DLNA技术实现家庭用户多屏之间的多媒体共享业务,可以解决这一问题。在DLNA体系结构的基础上,提出了一种基于DLNA实现甩屏的技术方案,分析了如何通过DMC(手机、第四屏)将EPG的URL甩到DMR(机顶盒)上进行频道/点播节目的播放和控制这一流程,从而满足了家庭内无关联用户间的多屏同看、多屏续播、多屏互动的业务需求。 相似文献
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In terms of the volume-integrated Poynting vector, we present a quantum field-theory investigation of the zitterbewegung (ZB) of photons, and show that this ZB occurs only in the presence of virtual longitudinal and scalar photons. To present a heuristic explanation for such a ZB, by assuming that the space time is sufficiently close to the flat Minkowski space, we show that the gravitational interaction can result in the ZB of photons. 相似文献
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针对新型激光医疗设备多功能、高精度、小型化的要求,设计了设置方便、显示直观、可共用一块数字表头显示的新型定时及功率检测电路。实验表明,该电路工作可靠、体积小、精度高。 相似文献