第四届中国卫星导航学术年会新闻发布会在北京举行

4月2日,第四届中国卫星导航学术年会新闻发布会在北京举行,中国卫星导航系统管理办公室技术部总师杨强文表示,北斗卫星导航系统自2012年12月27日正式向亚太区域提供服务以来,系统性能表现稳定,定位精度稳步提高,受到了上海、广东等多个地方政府部门和普通群众的广泛关注,社会认知度和影响力大大增加。     

A Robust Algorithm for Blind Total Variation Restoration

Image restoration is a fundamental problem in image processing. Blind image restoration has a great value in its practical application. However, it is not an easy problem to solve due to its complexity and difficulty. In this paper, we combine our robust algorithm for known blur operator with an alternating minimization implicit iterative scheme to deal with blind deconvolution problem, recover the image and identify the point spread function（PSF）. The only assumption needed is satisfy the practical physical sense. Numerical experiments demonstrate that this minimization algorithm is efficient and robust over a wide range of PSF and have almost the same results compared with known PSF algorithm.     

I^2C总线彩电IC的特殊引脚及特殊故障现象

许多I^2C总线彩电CPU（徽处理器）及被控器件均设有特殊功能引脚。这些特殊引脚的电压对I^2C总线的控制功能有较大的影响。只有当这些引脚的电压正常时，I^2C总线系统才能正常工作。     

DJ的武器—Sony LBT-DJ2i XROSS FADE

不知道Muteki moniker的大有人在。不过，Sony现在又新添一款大号的，为家庭派对准备的LBT-DJ2i XROSS FADE。这款音响系统总功率达450瓦，能播放CD，支持AM／FM调频，配备了line-in接口，一对2-way扬声器以及7英寸的双重重低音，还能将CD或广播翻录成MP3文件。DJ还能通过控制钮和内置双通道混频器进行更专业的调音，