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The previous work, suggests a portioned picturebroadcasting system where screens of small size are accumulated togenerate screen of bigger size through Ethernet network interfacethat helps in easy install & implementation of digitized displaydevices. The system makes use of Texas Instruments Da Vinciplatform, that is comprised of Da Vinci TMS320DM6646 dual coreCPU along an ARM9 core & C64+...
Fiber channel (FC) based implementations have become a ubiquitous choice for most of the high-performance video multimedia storage networks and display units. FC is being considered a kind of communication architecture in the field of avionics for a variety of next generation aircrafts. However the challenge faced by designers is how to realize the complicated FC protocols implementation in a feasible...
Hadoop is a popular open-source framework that allows distributed analysis of large datasets using the MapReduce programming model. A distributed file system HDFS is implemented to provide high-throughput access to datasets. HDFS can achieve high performance metadata service but has two disadvantages. First, when the metadata server stores metadata on persistent devices, it is restricted to read and...
We investigated the performance of the IEEE 802.1AS time synchronization protocol and its usage in in-vehicle networks by assessing the precise time synchronization mechanisms, such as offset correction, rate correction and the automatic optimal sync message period. In particular, this paper presents a method for adjusting the optimal synchronization message period to achieve high-precision time synchronization...
Data synchronization-long a staple in le systems-is emerging as a signicant communications primitive. In a distributed system, data synchronization resolves di erences among distributed sets of information. In named data networking (NDN), an information-centric communications architecture, data synchronization between multiple nodes is widely used to support basic services, such as public key distribution,...
Ethernet is going to play a major role in automotive communications, thus representing a significant paradigm shift in automotive networking. Ethernet technology will allow for multiple in-vehicle systems (such as, multimedia/infotainment, camera-based advanced driver assistance and on-board diagnostics) to simultaneously access information over a single unshielded twisted pair cable. The leading...
This paper presents the time synchronization performance of the IEEE 802.1AS standard using a hardwareassisted time stamp. The IEEE 802.1AS standard describes a time synchronization protocol that is part of Ethernet audio/video bridge (AVB) that is expected to be implemented in a wide variety of multimedia and infotainment applications of automotive systems.
The IEEE 802.1 Audio/Video Bridging (AVB) protocol successfully supports audio/video streaming over Ethernet networks and is also a promising candidate for industrial automation. However, several industrial automation applications feature requirements that cannot be fulfilled by the current AVB standard. The next generation of IEEE 802.1 standards, which will specifically target the requirements of...
The aim of Harmonic Broadcasting protocol is to reduce the bandwidth usage in video-on-demand service where a video is divided into some equal sized segments and every segment is repeatedly transmitted over a number of channels that follows harmonic series for channel bandwidth assignment. As the bandwidth of channels differs from each other and users can join at any time to these multicast channels,...
Avionics Full Duplex Ethernet (AFDX) is a well-established backbone network with wide usage in all current aircrafts, with its first usage onboard the Airbus A380. It was initially defined by Airbus and internationally standardized by ARINC (664 Part 7). The key features are 802.3 Ethernet compatibility, static routing based on a virtual link concept, reserved bandwidth with granted bandwidth allocation...
In this paper, we describe a mobile application that synchronizes the playback of a video stream among a group of mobile devices while the video playback is controlled (e.g. pause, resume, seek) by one of the devices. This feature allows a group of people to collaborate remotely in real-time through watching the same video on their mobile devices. To make this application work for heterogeneous mobile...
3D-HDTV is considered to be the next milestone in the evolution of digital video storage and transmission. Providing two views of a scene instead of just one may only be the beginning of the era of multi-view video services. Yet, the major challenge in designing multi-view transport and rendering architectures is to prevent them from scaling linearly in resource consumption. With respect to network...
The IEEE 802.15.4 protocol is a well accepted standard for wireless sensor network (WSN). To deliver the video data in WSN, MPEG2 TS over IEEE 802.15.4 networks is constructed. For lower energy consumption, the MPEG2 TS header compression mechanism is proposed. The simulation shows that the proposed mechanism reduces the length of MPEG2 TS packet around 4-5%. The proposed mechanism can save the energy...
This paper introduces a novel rendezvous protocol (RAC2E) for dynamic control channel provisioning among cognitive radios in a decentralized and cooperative ad-hoc environments. Unlike previous work in the field, RAC2E does not require synchronization in the radio environment. Its main characteristics are lightweight design and scalability. The paper elaborates RAC2E operation, gives a numerical analysis...
This paper analyzes the reasons of asynchronous between audio and video image for current 3G video phones. A solution for improving the synchronization between audio and video data is proposed. The solution proposed in this work mainly consists of software components, according to which hardware needs to be selected. It also gives the video phone terminal structure, block diagram for H.324M video...
With recent advances in video encoding and network technology, media streaming services are getting popular. Media streaming system based on the traditional server/client or CDN architecture has a scalability problem, and peer-to-peer media streaming system using resources of peers in the system can provide better scalability. Previous media streaming services are suited to play stored contents such...
Quality of Service (QoS) is an important, and admittedly overloaded, concept for emerging services based on the Real-Time Transport Protocol (RTP) to deliver multimedia content. In the context of the Internet Protocol Television (IPTV) services, the synchronization of multimedia components plays an important role. In order to synchronize audio and video components of multimedia content, RTP timestamps...
Quality of Service (QoS) is still one of the major challenges for emerging services based on the Real-Time Transport Protocol (RTP) to deliver multimedia content. In the context of the Internet Protocol Television (IPTV) services, the synchronization of multimedia components plays an important role. In order to synchronize audio and video components of multimedia content, RTP timestamps have to be...
Rich Media (RM) is a new media concept, which is different from the transitional media such as video, audio etc. Embedded rich media services provide a fresh and interactive user experience. A rich media service contains several scenes, which specifies the layout of the elements. Depending on the concrete service, the representation can include various kinds of element streams. The organization, transporting...
At present, many application layer multicast protocols (ALM) based on multiple description coding (MDC) have been proved to be more scalable and robust than traditional multicast protocols in practical environment. In this paper, we propose an ALM system called SMD for streaming media based on MDC to address the problem of synchronization of available descriptions among maximum hosts. SMD concentrates...
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