嵌入式会议终端的电话模块设计  

Telephone module design of embedded conference terminal

作　　者：冯春华 FENG Chunhua(School of Information Engineering,Wuhan University of Engineering Science,Wuhan 430200,China)

机构地区：[1]武汉工程科技学院信息工程学院,湖北武汉430200

出　　处：《电子设计工程》2023年第6期124-127,132,共5页Electronic Design Engineering

摘　　要：针对视频会议终端在网络出现故障时无法进行视频通话的问题,基于传统视频会议终端设备设计了一款集成电话功能的会议终端设备,该设备采用海思平台和红外技术,主要由编码模块、解码模块、电话语音模块等组成,编码模块将设备采集的音视频信号转换为IP数据,并传送到IP网络中;解码模块接收IP网络中的数据,并解码为音视频信号在本地播放;电话语音模块将设备采集的音频信号转换为电话数据,并传送到PSTN网络中。经实验验证,该系统实现了视频会议和电话语音保底功能。Aiming at the problem that the video conference terminal cannot make video call when the network fails,a conference terminal device with integrated telephone function is designed based on the traditional video conference terminal device. The equipment adopts Hisilicon platform and infrared technology,which is mainly composed of coding module,decoding module and telephone voice module. The coding module converts the audio and video signals collected by the equipment into IP data and transmits them to the IP network. The decoding module receives the data in the IP network,decodes it into audio and video signals and plays them locally. The telephone voice module converts the audio signal collected by the equipment into telephone data and transmits it to the PSTN network.Experiments show that the system realizes the functions of video conference and telephone voice minimum guarantee.

关 键 词：视频会议终端 编码 解码 电话模块 

分 类 号：TN948[电子电信—信号与信息处理]