文档介绍：华中科技大学
硕士学位论文
NVD视盘机及其外置磁盘录像子系统的设计与实现
姓名:黄映笛
申请学位级别:硕士
专业:计算机系统结构
指导教师:林安
20070604
华中科技大学硕士学位论文
摘要
NVD (Next-Generation Disc)是我国具有自主知识产权的红光高清光盘技术。它
具有图像性能好、成本低、更于维护、免受国外专利制约的优点。数字视频录像功
能(Digital Video Recorder,DVR)是 NVD 视盘机(Next Generation Versatile of Disc
player for HDTV)的一项重要扩展技术,有较大的实用价值。
外置磁盘录像子系统 DVR 的硬件由 NVD 视盘机和 USB 存储设备组成。在对软
件模块 DVR 的研究过程中,深入分析了 NVD 视盘机特殊的软硬件平台、文件编码
格式 MPEG2 标准,在节目流进入硬件解码前,分析软件缓冲区内的 Pack 包,利用
接口的高速传输率将节目以文件形式写入存储设备中,灵活运用人机交互技
术提示用户录制状态信息,最终设计并实现了 NVD 视盘机外置磁盘录像子系统。
外置磁盘录像子系统 DVR的创新性在于实现了目前市场上同类产品不具备的外
置录像功能,且不需要增加整机硬件成本,提升了 NVD 视盘机市场竞争的能力。测
试表明,NVD 视盘机外置磁盘录像子系统简单、易用,具有良好的稳定性,人机交
互界面友好,录像文件可在 NVD 视盘机或 PC 机上流畅播放,实现了预期的设计目
标。
关键字:新一代红光高清视盘机,数字视频录像,人机交互
I
华中科技大学硕士学位论文
Abstract
NVD (Next Generation Disc) is the optical disc technology of red laser to play
HDTV programs. Holding the intellectual property right of NVD, which has many
advantages such as perfect image, low cost, easer maintenance, enterprise of China can
avoid the constrains of foreign patent. As an important expanded technology, the function
of DVR (Digital Video Recorder) on NVD player (Next Generation Versatile of Disc
player for HDTV) contains huge practical value.
The hardware of outside-disk DVR subsystem consisted of USB storage device and
NVD player. To design and implement the software module of outside-disk DVR
subsystem, I have done a lot of research on the special hardware and software platform of
NVD player and study deeply in MPEG2 encoding standards. The working principle of
subsystem is of analyzing Packs in buffer, recording data to storage device as file through
the high-speed interface before the program streams enter into hardware decoder
and using human-machine interaction to show the recording status.
The innovation of Outside-disk DVR subsystem on NVD player is that the subsystem
record programs to mobile storage device outside while the market only has Inside-disk