نتایج جستجو برای: digital video broadcasting
تعداد نتایج: 481335 فیلتر نتایج به سال:
This article presents an analysis of the key technology improvements of the second generation of Digital Video Broadcasting Terrestrial (DVB-T2) over its first generation (DVB-T) and an estimation method of the new technology influence on the broadcasting business case used in digital terrestrial networks. This article addresses the current challenges in broadcasting wireless network design and...
In this paper, we study the performance of the Digital Video BroadcastingTerrestrial (DVB-T) system with Continuous Phase Modulation Orthogonal Frequency Division Multiplexing (CPM-OFDM). The proposed structure combines the advantage of mitigating the Peak-to-Average Power Ratio (PAPR) problem in the Power Amplifier (PA)in addition to exploiting the channel frequency diversity and power efficie...
With the advent of digital video and digital broadcasting, copyright protection of video data has been one of the most important issues. We present in this paper a novel method of digital watermark for video data based on the discrete wavelet transform. In this method, we embed the watermark in the lowest frequency components of each frame in the uncoded video by using a controlled quantization...
compressed domain processing, transcoding, video editing, MPEG, splicing, reverse play, frame rate conversion, interlace to progressive, motion vector resampling Video compression algorithms are being used to compress digital video for a wide variety of applications, including video delivery over the Internet, advanced television broadcasting, video streaming, video conferencing, and video stor...
Universal education is the dream of India and more so with the passing of 'Right to Education bill' in the country. Looking to the diverse culture and vividity in the country it is not possible to take education to the last mile in the country with prevailing chalk-blackboard technique. An attempt has been made to probe various digital video broadcast (DVB) techniques for spatial and temporal d...
Internet broadcasting and streaming contents have recently been attracting a great deal of attention, despite their inadequate content quality. The demand for such services is projected to continue to increase in the near future, and streaming contents are expected to play a major role among applications for the next-generation Internet [1] [2]. With the further development of DVTS, it will cer...
Television archives play an important in giving their users easy access to the huge amount of video informa tion that have been broadcast In this paper we discuss some of the problems faced today and we discuss how digital video and advances in computer technology can be used to overcome some of these problems The pa per also gives a short description of digital television archive prototype dev...
NTSC composite color video is currently one of the most common formats of video broadcasting. Although the signal is analog, it can be decoded almost entirely digitally. Analog decoders offer limited video quality and require adjustments. Using digital techniques to implement NTSC decoding offers minimum adjustments and excellent video quality. This project presents the building blocks of digit...
The paper anticipates that the actions to be taken concerning the Digital Switchover (transition form analogue to digital broadcasting – DSO) in UHF are of strategic importance for the European Member Countries and most candidate ones, as long as DSO arises as a possible and complementary solution towards the deployment of Broadband Access Infrastructures, especially in less favoured regions. T...
Coded Orthogonal Frequency Division Multiplexing (COFDM) [1, 2] has been specified for digital broadcasting systems for both audio -Digital Audio Broadcasting (DAB) [3] and (terrestrial) television -Digital Video Broadcasting (DVB-T) [4, 5, 6]. COFDM is particularly well matched to these applications, since it is very tolerant of the effects of multipath (provided a suitable guard interval is u...
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