基于嵌入式Linux平台的数字化视频格式转换系统设计  

Design of digital video format conversion system based on embedded Linux platform

作　　者：张士坤[1] ZHANG Shikun(Dongchang College of Liaocheng University,Liaocheng Shandong 252000,China)

机构地区：[1]聊城大学东昌学院,山东聊城252000

出　　处：《激光杂志》2023年第10期184-188,共5页Laser Journal

基　　金：山东省自然科学基金项目(No.ZR2019BEE014)。

摘　　要：大体量的多媒体数字化视频在传统的格式转换系统中转码耗时时间长,转换效率低,设计一种基于嵌入式Linux平台的数字化视频格式转换系统。系统硬件设计中,对嵌入式Linux平台SOC芯片进行了优化,选择的芯片型号为HD920F,对芯片内部架构以及主要功能区域进行了功能设计和参数调整。软件设计中,使用线性滤波实现去隔行操作,分析过程,并提升帧率,设计插帧流程,最后优化HDMI信号解码方案,对其中的两条IIC控制链的功能和控制过程进行设计。为验证系统有效性,设计单视频格式转换和多视频格式转换测试,结果表明,设计的系统在不同视频条件下,格式转换单位大小耗时均低于三种传统方法,验证了系统有效性。The traditional format conversion system takes a long time to convert large-volume multimedia digital video,and the conversion efficiency is low.Therefore,a digital video format conversion system based on embedded Linux platform is designed.In the system hardware design,the embedded Linux platform SOC chip is optimized,the chip model is HD920F,and the internal architecture and main functional areas of the chip are designed and parameters adjustment of the internal architecture and main functional areas of the chip are adjusted.In the software design,linear filtering is used to realize deinterlacing operation,analyze the process,and increase the frame rate,design the interpolation process,and finally optimize the HDMI signal decoding scheme,and design the functions and control processes of the two IIC control chains.In order to verify the effectiveness of the system,a single video format conversion test and a multi-video format conversion test are designed.The results show that the format conversion time per unit size of the designed system is lower than the three traditional methods under different video conditions,which verifies the effectiveness of the system.

关 键 词：嵌入式 LINUX平台 视频格式转换 芯片架构 

分 类 号：TN949.13[电子电信—信号与信息处理]