基于FPGA内嵌软核的机顶盒OSD设计

Design of OSD Based on FPGA Embeded Softcore

OSD在屏显示技术是用户与数字电视机顶盒软件系统交互的桥梁。设计了基于FPGA内嵌软核的数字电视机顶盒OSD菜单系统,在Quartus Ⅱ,SOPC Builder和Nios Ⅱ IDE开发平台上实现了应用层的字符图形叠加、图层混合、界面切换等功能。所设计的系统通过Altera公司的开发板进行仿真测试,满足了用户与机顶盒软件系统交互所要求的功能。

The OSD in screen display technology is the interactive bridge of the user and digital TV set-top box software system. The design of OSD menu system is based on FPGA embedded soft core, using Quartus II, SOPC Builder , Nios II IDE software development platform to achieve the application layer of the character graphics overlay, layer blending, color keying interface switching and other functions. Simulation is done on a VGA monitor by Altera DE2 development board, and it meets the functions requirements of user and STB software system.