嵌入式多媒体通信终端中文字交互功能的实现  

Implementation of Interactive Function with Chinese Characters in Embedded Multimedia Communication Terminals Based on DSP

作　　者：王雅辉[1] 迟学芬[1] 祝宇鸿[1] 吴伟刚[1] 刘聪[1] 

机构地区：[1]吉林大学通信工程学院,长春130012

出　　处：《吉林大学学报（信息科学版）》2009年第1期56-61,共6页Journal of Jilin University（Information Science Edition）

基　　金：吉林省科技发展计划基金资助项目(20060327)

摘　　要：为解决嵌入式DSP(Digital Signal Processing)视频通信系统无法处理中文信息的问题,提出了嵌入式IP多媒体通信系统中文字交互功能的设计与实现方法,给出硬件、软件设计方案,软件处理技术以及在嵌入式平台上实现多线程同步的方法。在嵌入式多媒体通信终端中建立了小型汉字库,通过I2C(Inter-Integrated Cir-cuit)总线方式读取键盘输入,采用T9拼音输入法编写文字。在保证实时音视频通信的同时,实现了IP网络上的快捷双向文字通信功能。To resolve the problem of processing Chinese real-time video communication system, the design and language in embedded DSP （Digital Signal Processing） implementation methods of message （in Chinese language） exchanging function were proposed in embedded IP multimedia communications system. Hardware design and software solution are given. Software processing technologies are discussed in detail. The method of multithread synchronization on the embedded platform is proposed. A compact Chinese Library is implemented in the embedded multimedia communication terminal device. Keyboard input is read through the I2C （Inter-Integrated Circuit） bus and edited into Chinese words using T9 pinyin processing tool. While guaranteeing real-time audio and video communications, it also provides bidirectional speedy message （in Chinese language exchanging function.

关 键 词：TMS320DM642芯片 T9输入法 键盘 I2C总线 ZLG7290芯片 

分 类 号：TP391[自动化与计算机技术—计算机应用技术] TN919[自动化与计算机技术—计算机科学与技术]