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介绍按国际建议设计并实现的会议电视系统,对其构成、设计特点及硬件实现,特别是对其核心技术──符合ITU-TH.261建议的视频编解码硬件实现做了初步探讨,并提出了有效的传输缓存器控制和自适应量化策略。该系统可在传输速率为128kb/s~2Mb/s的数字信道上传输,系统延时约为0.5s,图像主观质量较高。
Introduces the conference TV system designed and implemented according to international recommendations. It describes its composition, design features and hardware implementation, especially its core technology ─ ─ in line with ITU-TH. 261 proposed video codec hardware implementation of a preliminary discussion and proposed effective transmission buffer control and adaptive quantization strategy. The system can be transmitted over a digital channel with a transmission rate of 128kb / s ~ 2Mb / s with a system delay of about 0.5s and a high subjective image quality.