激光显示中的色域转换系统

Color Gamut Conversion System in Laser Display

根据激光显示的特点,推导出以三色激光(红:671nm,绿:532nm,蓝:473nm)为三基色的颜色系统与普通电视三基色系统的矩阵转换关系。利用解码模块、FPGA处理模块、编码模块为主要组成部分,设计了激光三基色系统和普通电视三基色系统的色域转换电路。介绍了如何采用FPGA实现视频彩色信号色域转换的方法和相关算法,分析了电路中各个模块的作用及整个电路的工作过程。从组成框图、硬件设计和软件流程等方面对该系统进行了详细描述。

By researching the characteristic of laser display, this paper deduced the matrix conversionrelation between the primary-color system which uses three laser colors（red. 671 nm, green.532 nm, blue.473 nm） and the primary-color system of current TV system. A color gamut conversion circuit between the primary-color system which uses three laser colors and the primary-color system of current TV system was designed utilizing decode module, controlling circuit by FPGA and coding module. A method of color gamut conversion in video color signal utilizing FPGA device and corresponding arithmetic were introduced, and its sub-module and working process were elaborated. The composition diagram, hardware design and software process of the circuit were given, as well as the system was described in detail.