摘要： 介绍了一款基于富士通公司SoC芯片MB93461的宽带可视电话系统设计及实现。MB93461芯片采用VLIW结构，主频可达400MHz，内部集成媒体处理单元，可实现CIF大小的H.263/MPEG4视频实时编解码，通过集成视频IO，简化了外围电路设计。该系统兼容H.323/SIP协议栈，实现了视音频双向实时通信(每秒25帧H.263 CIF图像视频编解码；语音支持G.711和G.729标准)。该平台还实现了PSTN旁路功能，并运行uClinux操作系统。
关键词:
MB93461,
宽带可视电话,
H.323
Abstract: This paper introduces a hardware system design and its implementation of broadband videophone based on MB93461. MB93461 realizes strong performance by combining general processing and media processing with 400MHz maximum operation frequency. It achieves 25-frame-per-second video codec of H.263/MPEG4 in CIF size (352x288 dots) and simplifies peripheral design by integrating the video and audio input/output function. This videophone system supports ITU-T H.323 (with H.263 video and G.711/G.729 audio) and also provides PSTN function. It runs on uClinux OS.
Key words:
MB93461,
Broadband videophone,
H.323
罗海勇;李锦涛;费璟昊;郭俊波;史红周;何 哲;顾晓光;王 非;罗 炜;王 琳. 基于MB93461的嵌入式宽带可视电话系统[J]. 计算机工程, 2007, 33(05): 223-225.
LUO Haiyong; LI Jintao; FEI Jinghao; GUO Junbo; SHI Hongzhou; HE Zhe; GU Xiaoguang; WANG Fei; LUO Wei; WANG Lin. Embedded Broadband Videophone System Based on MB93461[J]. Computer Engineering, 2007, 33(05): 223-225.