Thin Client Computing Solutions in Low- and High-Motion Scenarios

Lecture Notes in Computer Science, 2007

Recent growth in computing devices from the smartphone to the desktop computer has led to users interacting with multiple computing devices throughout the course of the day. Modern computing sessions are a graphically rich, multi-tasking experience, representing a considerable amount of state. There is seldom the ability to automatically move a session from one device to another; instead users must manually restore applications to their previous state. Without session mobility, the problems of unsynchronised information and communication barriers become apparent. We present a thin client approach to supporting session mobility across a broad range of devices. We use an adaptive approach, thereby supporting a fine granularity of devices. Furthermore, our approach enables rich diverse sessions composed of applications specific to a range of platforms, reducing constraints imposed by mobile devices, and boosting productivity by allowing access to a wider range of applications from a single device.

The Journal of Supercomputing, 2013

In this paper, we design a novel hybrid remote display for mobile thinclient system. The remote frame buffer (RFB) protocol and motion JPEG (M-JPEG) protocol are assigned to handle remote display tasks in the slow-motion region and high-motion region, respectively. Graphic processing units (GPU) are utilized to do a part of a real-time JPEG compression task. A novel quality of experience (QoE)based high-motion detection algorithm is also proposed to reduce the network bandwidth consumption and the server-side computing resource consumption. The continuity of screen delivery remains whenever the JPEG compression is applied to different screen regions. The proposed hybrid remote display approach has many good features which have been justified by comprehensive simulation studies.

International Journal of Communication Systems, 2011

. In the thin client paradigm, the majority of the application logic is executed on a remote application server. User input is transmitted to the server, which returns the resulting display updates. Bandwidth availability might be limited on the wireless link, introducing a need to optimize thin client protocols.

Future Generation Computer Systems, 2016

High-resolution display environments built on networked, multi-tile displays have emerged as an enabling tool for collaborative, distributed visualization work. They provide a means to present, compare, and correlate data in a broad range of formats and coming from a multitude of different sources. Visualization of these distributed data resources may be achieved from a variety of clustered processing and display resources for local rendering and may be streamed on demand and in real-time from remotely rendered content. The latter is particularly important when multiple users want to concurrently share content from their personal devices to further augment the shared workspace. This paper presents a high-quality video streaming technique allowing remotely generated content to be acquired and streamed to multi-tile display environments from a range of sources and over a heterogeneous wide area network. The presented technique uses video compression to reduce the entropy and therefore required bandwidth of the video stream. Compressed video delivery poses a series of challenges for display on tiled video walls which are addressed in this paper. These include delivery to the display wall from a variety of devices and localities with synchronized playback, seamless mobility as users move and resize the video streams across the tiled display wall, and low latency video encoding, decoding, and display necessary for interactive applications. The presented technique is able to deliver 1080p resolution, multimedia rich content with bandwidth requirements below 10Mbps and low enough latency for constant interactivity. A case study is provided, comparing uncompressed and compressed streaming techniques, with performance evaluations for bandwidth use, total latency, maximum frame rate, and visual quality.

2018

Virtual network computing (V.N.C) is a process of controlling a computer by sitting kilometers away through internet. Here we can control a server computer, which is situated kilometers away by sitting in front of a viewer computer. An image of the desktop of the server is brought to our computer and making events in viewer computer we can do any work in the server computer. Here internet is used as the communication between the server and the viewers computer. As the operating system is graphical user interface the controlling is made by mouse events. When we brought the servers desktop to viewers computer the screen resolution of the server and viewers must be same (eg: 800*600). So when a mouse event is happening on a particular pixel (say 300,200), that particular pixel send to the server from the viewer and the change is brought to the viewer. So the user will not feel that two computers are working here. He will get feeling that he is using the server itself. The V.N.C techniq...

We propose an approach to remote display systems in which the client predicts the screen update events that the server will send and applies them to the screen im- mediately, thus eliminating the network round-trip time and making the system more responsive in a wide-area or high loss environment. Incorrectly predicted events are undone when the actual events arrive from the server. The approach requires no server or protocol changes, and thus can work with existing systems. Since it is core to the feasibility of such a speculative remote display sys- tem, we study the predictability of the events that occur under typical workloads in two extant systems, Windows Remote Desktop and VNC. We find that simple, state- limited Markov models are often able to correctly predict the next event. Based on these results, we design, imple- ment, and evaluate a speculative remote display exten- sion to the VNC client. In our implementation, the end user can trade off between the responsiveness of...

2012 Second International Conference on Digital Information and Communication Technology and it's Applications (DICTAP), 2012

The nature of operation of Thin Client computing makes their performance to be affected by both the quality of the network and the terminals. For the past few years, there are few analyses on the performance of Thin Clients that can produce reliable, valid, and up-to-date results collected in a well designed and evaluated experiment based research. This paper analyses the performance of Thin Clients through experiment based research. The approach is to use benchmark application which is designed specifically for measurement of desktop computers by inserting delays in the visual elements of such benchmark application. In this technique, packet's behavior is measured on the network as the application is executed from the server to a Thin Client. The analysis through measurements of the performance shows that the improvement of computer processing power has a lot of performance metrics and comparing the trend with the results collected nearly seven years ago by previous researchers. Moreover, the bandwidth is found to be the main bottleneck for the performance of Thin Clients while the CPU is of less concern.

IJRCAR, 2014

Cloud multimedia provides solutions for high quality multimedia. Now a days mobile phones becomes very popular, network services are no longer limited to home. Multimedia information is obtained easily using mobile devices that allows users to enjoy unlimited network services. Mobile streaming provides low quality and low bandwidth. In this paper, we use a network and device-aware Quality of Service (QoS) that provides the suitable multimedia format for the terminal unit via mobile streaming services and also considering and adjusting the transmission frequency for avoiding the wastage of bandwidth. By using this method, we can improve the quality and bandwidth of multimedia

Studies in health technology and informatics

Organizations are beginning to recognize that health care providers are highly mobile and optimal care requires providing access to a large and dynamic body of information wherever the provider and patient are. Remote display protocols (RDP) are one way that organizations are using to deliver healthcare applications to mobile users. While many organizations have begun to use RDPs to deliver real-time access to health care information to clinicians, little formal work has been done to evaluate the performance or the effectiveness of thin-client computing with health care applications. This study examines the performance of wireless thin-client tablets with two web-based clinical applications, a text-centric, graphics-poor EMR and a graphic-rich image analysis program. The study compares the performance of two popular RDP implementations, Citrix and Microsoft Remote Desktop, with the performance of a traditional web browser in a wireless environment. For both applications, the RDPs de...

2012

ABSTRACT DisplayCast is a many to many screen sharing system that is targeted towards Intranet scenarios. The capture software runs on all computers whose screens need to be shared. It uses an application agnostic screen capture mechanism that creates a sequence of pixmap images of the screen updates. It transforms these pixmaps to vastly improve the lossless Zlib compression performance. These algorithms were developed after an extensive analysis of typical screen contents.