| 摘要: |
| 介绍了交换处理单元 (SPU)的一种实现方案 ,该交换处理单元用于会议电视多点控制器(MCU)中 ;描述了交换处理单元 (SPU)板的硬件结构设计、硬件接口、工作原理及板上软件实现方法 ,并对用于SPU和处理机之间的命令、响应信息进行了说明 ;依据该方案制作的SPU板可完成视频、音频、数据的切换和多点会议的控制、系统时钟的锁定以及语声选大功能 |
| 关键词: 会议电视,多点控制器,交换处理单元,音频,数据 |
| DOI：10.3969/j.issn.1001-893X. |
| 修订日期：2002-07-12 |
| 基金项目: |
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| Switch Processing Unit Used in MCU of Video Conference |
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| Abstract: |
| One kind of switch processing unit(SPU) realization scheme is introduced. The SPU is used in multipoint control unit(MCU)of video conference. The hardware structural design, hardware interface,working principle and the software realization of SPU are described . The command and respond information used between the SPU and the the processor is also explained in this paper. The SPU made according to this scheme has the functions of switching video, audio and data,controlling multipoint conference,locking system clock and selecting maximum voice? |
| Key words: Video conference,MCU,SPU,Audio,Data, |
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