This paper summarizes the development status quo of digital video broadcasting,the transmission system technology about DVB-CATV and DVB signal in PDH&SDH network was introduced in relatively detailed,moreover,the paper introduces the technology which be related to MPEG-2.
This thesis first analyzes the development condition of digital CATV at home and abroad, and then summarizes the laws in the development of digital CATV based on the previous analysis, finally proposes several effective development modes.
The second part briefly reviews the development course and the present situation of Chinese CATV, and analyzes its influence on the development of digital CATV. Four representative development modes of digital CATV have been chosen with detailed analysis and comparison being made respectively.
We obtained ～1000 B, V, and R magnitude measurements for asteroid 21 Lutetia quasi-simultaneously with the digital TV system of a 0.5-m MTM-500 meniscus telescope from November 3 through November 11, 2004.
A smartcard conditional access interface scheme for conditional access subsystem separation in digital TV broadcasting
Conditional access system (CAS) is a key technical component in digital TV broadcasting through which TV operators manage the appropriate rights of different subscribers in order to protect their commercial benefits.
The normal digital TV receiver can only receive and decode the pay TV programs scrambled by one specific CAS.
In this paper, the authors proposed a smartcard conditional access interface (SCAI) scheme in order to make the digital TV receiver be a common receiving platform independent of any specific CAS employed at the broadcasting head-end.
Positioning models and systems based on digital television broadcasting signals
The requirement and feasibility of the positioning system using digital television (DTV) broadcasting signals are analyzed.
Digital television transmission based on asynchronous transfer mode
This paper introduces a method to realize digital television transmission based on asynchronous transfer mode (ATM), a technology based on fast packet switching.
New and emerging technologies such as multimedia, digital television, telecommunication and telepresence, virtual reality, or 3D Internet further indicate the tremendous potential of computer graphics in the years to come.
A pyrometric device based on a consumer color digital video camera and a personal computer is described.
The domain structure is displayed on a PC monitor using a Nikon DXM 1200 high-resolution digital video camera.
The plane wavefront of visible radiation emitted by a semiconductor laser is reflected from the two surfaces of the plate and forms on a screen an interference pattern recorded by a digital video camera.
Video watermark is the main method to protect the copyright of digital video.
The boiling behaviors at the outlets of the miniature tubes were also visualized with a digital video camera.