【作者】 金涛；

【导师】 安振庄；

【作者基本信息】 天津大学 ， 通信与信息系统， 2004， 硕士

【摘要】 当前,在广播电视领域,特别是有线电视行业,场强仪已成为网络控制?维护中不可缺少的测试仪器?本论文完成的任务是设计与实现能收看电视视频与场强测量的多功能场强仪.我们选用了韩国 Advanced Digital Chips 公司的多媒体处理芯片 VirgineG2 为微控制器的方案,本论文详细介绍了多功能场强仪的硬件构成和软件实现原理,以及电路板的设计方法. 本系统的核心芯片是 Virgine G2,它是一个高度集成的图像处理芯片,广泛用于游戏及视频图像处理等领域,它内部功能强大,内嵌 32 位微处理器,主频高达 45MHZ,集视频?音频处理为一身,内部包括了一个基于 3D 图形算法的2D 图形加速器,图形加速器的最高频率为 80MHz,同时内嵌了 32 通道的 8/16位音频引擎,以及视频 DAC?DRAM 控制器?DMA?定时器?双串口等多种外设,图形加速器和声音引擎也是独立于 CPU 工作的? 在视频接收方面,本课题选用了 Philips 公司的 SAA7114 和 Trumpion公司的 T0944 完成视频转换功能,便于 TFT 接受,采用 T0944 内部 OSD 功能.RF信号的接收及场强的测量部分由高频头 UV1316 和 626 完成?通过硬件和软件的精心设计,完成了电视信号场强的高精度测量?更多还原

【Abstract】 At present, in the field of broadcasting, TV level measurer has become theindespensable instrument. The purpose of the paper is to research and implement theTV display and TV level measure. We chose the ADC’s multimedia chip VirgiveG2as the micro-controller in the project. The hardware structure, the software realizingprinciple of the TV level measurer and the method of the PCB design are described indetail in this paper. The core of this system is Virgine G2 which is a highly integrated image-processedchip for games and video image application. This chip can implement many fuctions,embeded 32-bit microcontroller, integrated audio and video decoder for video signaland the clock can reach to 45MHZ.Besides,it contain a 2D image accelerater based on3D image arithmetic, embeded 32 channel 8/16 bit audio engine,the highest clock ofimage accelerater is 80MHZ. The vedio DAC, DRAM controller,DMA,TIMER,anddual-series port are also included in this chip. This project chose the SAA7114 of Philips and T0944 of Trumpion to finish thevideo converting fuction so that the video data can be accepted by TFT. This systemuse the build-in OSD function of T0944 to implement the on screen display. thereceiveing of RF signal and the measurement of TV level are finished by UV1316and 626.更多还原