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Kyoungro Yoon 《Signal Processing: Image Communication》2013,28(2):127-135
Advances in media technologies brought so-called 4-D movies to your neighbour. The 4-D movies represent movies (preferably in 3-D) with additional sensory effects such as motion chairs and wind effects. We present an end-to-end framework to provide sensory effects for home theaters based on MPEG-V standard. The key technologies of the 4-D broadcasting framework, required to provide sensory effect through home theaters consist of creating sensory effects synchronized with audiovisual contents, delivering the sensory effects with content to home theater devices, recognizing home devices for rendering sensory effects, and rendering contents through home theater system with connected sensory devices in a synchronized way. This paper proposes end-to-end technology required, in addition to the conventional broadcasting framework, based on international standard of MPEG-V, specifically Part 2 to describe capabilities of the home sensory devices, Part 3 to provide contents with sensory effects, and Part 5 to command the sensory devices among other parts of MPEG-V standard. 相似文献
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Hui-Ling Lou Fernandez-Getino Garcia M.J. Weerackody V. 《Broadcasting, IEEE Transactions on》2000,46(1):60-67
There are two licenses, 12.5 MHz each, in the S-band for digital satellite-to-vehicle radio broadcasting in the United States. The potential advantages of such a system is that a motorist can enjoy commercial-free music, digital-quality sound and seamless coast-to-coast coverage. One proposal for the broadcast system is to have two satellites covering the continental USA at any given time. There will also be terrestrial repeaters in cities where the receivers on the vehicles cannot see the two satellites. The channels of these systems are affected by Rician, Rayleigh and flat fading caused by shadowing. This paper proposes a forward error correction (FEC) scheme that is not only robust against fading but also enables a low-delay tuning channel so that minimum tuning delay will occur when a user is switching and selecting programs. The scheme uses multiple source coded bit streams employing different interleaver depths. Large interleavers are used to ensure good decoded signal quality while small interleavers are used to minimize tuning delay. The proposed scheme also ensures that a program will not be interrupted by momentary shadowing frequently experienced by a motorist when, for example, a vehicle goes under a highway overpass. The impact of interleaver design on the real-time end-to-end delay and fading due to shadowing is analyzed. Finally, the channel code performance in Rician and Rayleigh fading channels are also presented 相似文献
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详细介绍了应用于HDTV的ATSC数字电视标准,包括所描述系统的组成(编码与压缩、服务复用和传送、RF/传输)和数据结构等。 相似文献
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Markus Waltl Benjamin Rainer Christian Timmerer Hermann Hellwagner 《Signal Processing: Image Communication》2013,28(2):136-150
This paper provides an overview of our research conducted in the area of Sensory Experience including our implementations using MPEG-V Part 3 entitled “Sensory Information”. MPEG-V Part 3 introduces Sensory Experience as a tool to increase the Quality of Experience by annotating traditional multimedia data with sensory effects. These sensory effects are rendered on special devices like fans, vibration chairs, ambient lights, scent disposers, water sprayers, or heating/cooling devices stimulating senses beyond the traditional ones. The paper's main focus is on the end-to-end aspects including the generation, transmission, and synchronized rendering of sensory effects with the traditional multimedia data taking movie clips as an example. Therefore, we present in this paper an open source tool chain that provides a complete end-to-end sensory effect generation and consumption framework. Furthermore, we summarize results from various subjective quality assessments conducted in this area. Finally, we point out research challenges that may encourage further research within this emerging domain. 相似文献
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介绍了IDBS的系统结构和协议层次,描述了采用多播数据缓存技术的IDBS系统结构,IDBS为高速英特网接入,多媒体技术应用提供了一种廉价、高效的途径。 相似文献
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青岛数字传媒以每日更新上百条的新闻,数以万计的信息条数为青岛市的老百姓提供海量的信息服务,为承载如此庞大信息更新数量,必须有一条成熟、稳定的信息管理及播出系统为此服务.多媒体信息系统的业务流程分为信息的策划、采编、制作、播出共四个步骤,系统由多媒体信息内容管理平台、多媒体信息制作平台、多媒体信息播出平台三部分组成.利用了先进成熟的Internet、XML、数据库,sml等技术,严格遵循广播媒体的三级审稿制度.为数字电视的运维提供了坚实可靠的平台保障. 相似文献
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Key analyses and specifications that the author asserts should have been part of the precertification process for HDTV systems are outlined. As part of the current precertification process, estimates for the channel and equipment impairments and the associated power penalties in the C/N (carrier-to-noise) are not required, the range of BER (bit error rate) for a given EFH (error free hours) is not specified, and the expected spectral spreading into adjacent channels due to the nonlinear power amplifier is hardly mentioned. The problems with the ATTC laboratory tests and field tests are discussed 相似文献
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智慧广电生态体系是智慧广电建设工程的重要组成部分,也是广电行业推进媒体深度融合、推动高质量发展的重要保障.本文浅析了智慧广电生态体系的建设思路构想,以及技术研究、数据算法应用、科技规划与标准建设、跨界合作等方面的能力要求,并给出了概要实施建议. 相似文献
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盘锦市融媒发展中心项目建设涵盖广播制播系统、融媒体综合制作系统、融媒体新闻制作系统、融媒体播发系统、网络及安全系统等。本文以盘锦市融媒体发展中心项目建设中广播制播系统为例,对播出、录音、工作站、总控等系统的规划进行分析介绍。 相似文献
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This paper presents a digital rights management (DRM) system for digital broadcasting based on home servers (DBHS) using receivers with large-capacity storage devices. DBHS will enable viewers to enjoy 'television anytime/anywhere' by utilizing these storage functions. Our proposed DRM system is suitable for broadcasting, and allows both rights protection and advanced access to content held on home storage devices (in terms of validity, usage and charge conditions, and so on). We developed a prototype DRM system using a Pentium3 personal computer (1 GHz) in order to evaluate the nonlinear playback and 'trick-play' modes of encrypted content on the hard disk drive (HDD). Using this prototype, we confirmed that the nonlinear playback of content encrypted using the proposed DRM system could be processed in real time. The functionality in terms of trick-play modes was equal to that of commercially available hard disk recorders. In addition, we developed a security module for the DRM system in the form of a smart card with a built-in processor. We confirmed that the proposed DRM system utilizing the new smart card could be applied to DBHS. 相似文献
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Statistical operators such as the exponentially weighted moving average operator are useful in adapting to changes in data access patterns in a mobile database application. The authors investigate the effectiveness of such operators in selecting suitable data items to be broadcast over scarce wireless channels through simulation 相似文献