| 1. | Eighty - fifth percentile speed
百分位速率 |
| 2. | The correctness and practicability of the dynamic bit rate allocation algorithm are verified by the analytical result of the experiment data
通过实验数据的分析，验证了动态位速率调整算法的正确性和实用性。 |
| 3. | 2 . when the existed dynamic bit rate allocation algorithms is working , the video data bit rate and the audio data bit rate are changed
2 )已有的动态速率调整算法在进行动态速率调整时，音、视频的位速率都要改变。 |
| 4. | These mechanisms provide for maximum efficiency for high - bandwidth streams , power - management friendly implementations , and poled - style access for variable bit rate and bursty streams
这些机制提供了最大效率的高带宽数据流、电力管理友善实现以及对可变位速率和脉冲式数据流的轮询式访问。 |
| 5. | The model can take care of the situations of data loss , jitter , delay in videoconference systems . but at the same time the complexity of the model has been increased
本模型充分考虑在发生了loss 、四川大学硕士学位论文jitter 、 delay时对视频会议的影响，根据发生loss 、 jitter 、 delay的严重程度对位速率进行调整。 |
| 6. | Comparing with the existed dynamic bit rate allocation algorithms , the model can provide better audio data quality by adjusting the video data bit rate . this meets the requirement in remote education system
本模块只对视频位速率进行调整，保持音频位速率不变，保证音频质量，在一定程度能满足远程教育的需要。 |
| 7. | Combined in the environment of the videoconference system provided by beijing shixun inc , preliminary experiment of the dynamic bit rate allocation module has been conducted on the atm lines of the online education academy of sichuan university
本动态位速率调整模块与北京视讯公司的桌面视频会议系统相结合，在四川大学网络教育学院的租用的atm线路线进行了初步的实验。 |
| 8. | The topics in this thesis are analysing the drawbacks of current h . 323 videoconference systems and popular solutions of them , discussing the advantages of dynamic bit rate allocation model and its features . 5 sub - modules implement the model
该模型的实现是通过5个子模块( rtp连接建立模块、数据包接收模块、媒体播放模块、反馈信息分析模块和动态位速率调整模块)来完成。 |
| 9. | The features of the dynamic bit rate allocation model are listed below : 1 . the existed dynamic bit rate allocation algorithms that only involved the situations of data loss ca n ' t meets the requirement of the videoconference system
作者的动态位速率调整模块具有以下特点： 1 )已有的动态速率调整算法只考虑了发生loss时进行速率调整，在一定程度上不能满足视频会议系统的实际需要。 |
| 10. | The structure of this thesis is as follows : the first chapter introduces the project background ; the second chapter introduces related h . 323 protocols and rtp / rtcp protocols ; the third chapter details the components and the implementation of the bit rate adjust model ; the forth chapter gives the experiment data of the model on atm connections , and the last part the summary of this thesis by analyzing the experiment data
第二章介绍了与动态位速率调整模块相关的h . 323协议族和rtp / rtcp协议。第三章重点说明了动态位速率调整模块的组成和实现。第四章介绍了在atm线路线的实验，并通过对实验数据进行了分析，总结全文。 |
