195,376 Hits in 5.5 sec

Synchronization of Chaotic Oscillators Using Natural Environmental Noises

Hiroyuki Yasuda, Mikio Hasegawa
2016 Journal of Signal Processing  
Our proposed synchronization method can be applied to intermittent communication.  ...  Accordingly, we evaluate the collision probability for the proposed synchronization method in intermittent communication.  ...  We evaluated the collision probability for our proposed method. We evaluated the collision probability for the chaotic synchronization system with a cyclic interference source.  ... 
doi:10.2299/jsp.20.129 fatcat:vt6soneg4jf7xc4ysbettdzk5m

SyncTap: synchronous user operation for spontaneous network connection

Jun Rekimoto
2004 Personal and Ubiquitous Computing  
This concept has been implemented in the "SyncTap system", which allows a user to establish device connections through synchronous button operations.  ...  When the user wants to connect two devices, she synchronously presses and releases the "connection" buttons on both devices.  ...  Acknowledgements I thank Michimune Kohno and Yuji Ayatsuka for their thoughtful discussions with me on the idea of synchronous operations.  ... 
doi:10.1007/s00779-004-0262-2 fatcat:i7ky3glfmjacfa5njsikmyaj2u

A Web Synchronization Method for Browser-Based Communications

Kazuyuki Tasaka, Tomohiko Ogishi
2014 Journal of Information Processing  
In this paper, we propose a web synchronization method (WSM) to share operation data on a browser and synchronize output time of data among browsers in browser-based communications such as video conferencing  ...  Several methods have been studied to prevent out-of-synchronization for streaming content such as video and voice data.  ...  This indicates that the proposed method achieves synchronization for web communication within the target time (320 ms).  ... 
doi:10.2197/ipsjjip.22.486 fatcat:bsxh2at565f73m4e6knvgr32ae

Wireless TDMA-Based Body Area Network Platform Gathering Multibiosignals Synchronized with Patient's Heartbeat

Tae Min Hwang, Seol Young Jeong, Soon Ju Kang
2018 Wireless Communications and Mobile Computing  
This study proposes a method of creating a self-organizing body area network based on wireless Time Division Multiple Access (TDMA) to guarantee the synchronization of multibiosignals and compare its accuracy  ...  Because each body biosignal is commonly synchronized with the heartbeat of the patient, precise synchronization of the heartbeat and other measuring cycles of each device is a critical attribute for analyzing  ...  The proposed WBAN can measure various vital signals that are important for time synchronization with heart signal using TDMA wireless communication method.  ... 
doi:10.1155/2018/2394384 fatcat:fzyxnnvx6rewrh5sy2w56xvp7u

Continuous synchronization for LED-to-LED visible light communication networks

Stefan Schmid, Giorgio Corbellini, Stefan Mangold, Thomas R. Gross
2014 2014 3rd International Workshop in Optical Wireless Communications (IWOW)  
The performance evaluation indicates that Visible Light Communication is a reliable solution for more than ten devices to bring low-cost and non-complex connectivity to a large number of devices.  ...  These networks require fast and stable synchronization and a distributed protocol to handle shared medium access.  ...  The two methods perform similarly for fewer than seven devices. The time to synchronize is always below one second.  ... 
doi:10.1109/iwow.2014.6950774 fatcat:cf66z5nxhzbpjpmu2cx6lxgtwm

Synchronization of Electrical Drives via EtherCAT Fieldbus Communication Modules

Marcin Paprocki, Krystian Erwiński
2022 Energies  
This research's main contribution was to show the time dependencies regarding synchronization in terms of data flow in the EtherCAT communication stack in slave servo drive devices.  ...  Synchronization between devices (in particular drive systems) is paramount for multi-axis motion control systems used in Computerized Numerical Control (CNC) machines, robots, and specialized technology  ...  Research on the EtherCAT bus communication cycle has not been presented. However, the synchronization method between the Master device and the servo drive systems has been mentioned.  ... 
doi:10.3390/en15020604 fatcat:25irvrgqavblzdygcbmu2kwndm

An Extended Web Displaying System based on Multiple Tablet Devices

Shota Imai, Shun Shiramatsu, Tadachika Ozono, Toramatsu Shintani
2016 International Journal of Networked and Distributed Computing (IJNDC)  
We present management methods of the arranged displays and two types of synchronous messages. One uses positional information and the other uses operational information for Web page synchronization.  ...  We propose an extended Web displaying system based on multiple tablet devices to help users to conduct collaborative works anywhere without a large display.  ...  Users can use multiple tablet devices as a pseudo mobile large display by using our system. We showed how to cooperate multiple tablet devices to display one Web content without any inconsistency.  ... 
doi:10.2991/ijndc.2016.4.2.4 fatcat:gt3fub4dyngw5bmbfkwww3f3uq

Block Data Record-Based Dynamic Encryption Key Generation Method for Security between Devices in Low Power Wireless Communication Environment of IoT

Soohwan Cho, Deokyoon Ko, Sooyoung Park
2020 Applied Sciences  
The static encryption key method used for devices is likely to be calculated in reverse through the value of the key and is vulnerable to exploitation attacks.  ...  Low-power wireless communication is applied to IoT for wireless connection and efficient energy consumption in various areas such as wearable devices, smart homes, and power plants in order to send and  ...  /2 steps Asynchronous/0 step Encryption Key Recovery Communication Method/Steps Synchronous/2 steps Synchronous/2 steps Synchronous/2 steps Required Computational Cost/Time for Encryption Key Generation  ... 
doi:10.3390/app10217940 fatcat:4gvuyrjlrzfobdqz2d42zvfpjm

HADFL: Heterogeneity-aware Decentralized Federated Learning Framework [article]

Jing Cao, Zirui Lian, Weihong Liu, Zongwei Zhu, Cheng Ji
2021 arXiv   pre-print
However, traditional FL systems adopt a centralized synchronous strategy, putting high communication pressure and model generalization challenge.  ...  Existing optimizations on FL either fail to speedup training on heterogeneous devices or suffer from poor communication efficiency.  ...  . 1: synchronize the initial models w k (0) = w (0) for k ∈ {N avl } 2: tsyn = 0 3: for t = 1 to T total do 4: for all k ∈ {N avl } do in parallel 5:for e k = 0 to E k do w (t+1) to devices whose F lag  ... 
arXiv:2111.08274v1 fatcat:pzvrflrfbrde5a7qspp227d2r4

A Test Device for Optimize PMU-Based Islanding Detection Technology

2015 International Journal of Thermal and Environmental Engineering  
Although the islanding detection method is supposed to be applied for traditional bulk power systems, it is also suitable for renewable generation power plants.  ...  Recently synchronous phasor measuring units (PMU) is proposed to be applied for islanding detecting.  ...  The communication delay will influence islanding detection and lead to misjudge. A common method to accommodate communication delays is to stamp each packet with a time code.  ... 
doi:10.5383/ijtee.10.02.006 fatcat:wyo4txdolnbfxn7iccbk4at5yu

Modeling Time-Triggered Ethernet in SystemC/TLM for Virtual Prototyping of Cyber-Physical Systems [chapter]

Zhenkai Zhang, Xenofon Koutsoukos
2013 IFIP Advances in Information and Communication Technology  
CPS are typically complex real-time distributed systems which require networks with deterministic end-to-end latency and bounded jitter.  ...  Our model provides startup and restart services that are necessary for maintaining synchronized operations in TTEthernet. We evaluate these services and also the efficiency of the simulation.  ...  The metrics we measure are average end-to-end latency and jitter of TT frames which are important factors for real-time communication systems.  ... 
doi:10.1007/978-3-642-38853-8_29 fatcat:p7rtinkvy5amxlflgvedkaozqy

Research on On-line Monitoring Technology of Running State of Time Synchronization Device Based on IEC61850

Yang LEI, Hong CHEN, Li QI, Jian-gang YIN, Jian WANG, Chan LI
2018 DEStech Transactions on Environment Energy and Earth Science  
, and strengthens the monitoring of the excessive operation process of the timing equipment, providing reference for the future time-synchronized online monitoring technology of the smart substation.  ...  This paper analyzes in depth the current status, technical route and program implementation of the existing smart grid time synchronization, improves the time synchronization online monitoring technology  ...  The time synchronization device serves as a unified standard time source for the entire station to provide time information and synchronization information for various secondary devices in the station,  ... 
doi:10.12783/dteees/epeee2018/26498 fatcat:hw25pt57izchxcouromakqblpa

SyncTap: An Interaction Technique for Mobile Networking [chapter]

Jun Rekimoto, Yuji Ayatsuka, Michimune Kohno
2003 Lecture Notes in Computer Science  
When a user wants to connect two devices, he or she synchronously presses and releases the "connection" buttons on both devices.  ...  Then, multicast packets that contain press and release timing are sent to the network. By comparing this timing with locally recorded one, both devices correctly identify each other.  ...  Unlike previous systems that assume various sensors for device identification, SyncTap only assumes both devices have human-controllable buttons, and uses synchronous timing as an identification method  ... 
doi:10.1007/978-3-540-45233-1_9 fatcat:ejmws4j7tnd7ncqcv7wam5sm4m

Energy Minimization Algorithm for Estimation of Clock Skew and Reception Window Selection in Wireless Networks

Michał Gorawski, Krzysztof Grochla, Rafał Marjasz, Artur Frankiewicz
2021 Sensors  
We propose a solution to two important problems in wireless networks of battery-powered devices: a method of establishing a connection with a device that has been disconnected from the system for a long  ...  time and developed unknown skew and also two approaches to follow-up clock synchronization using the confidence interval method.  ...  system for a long time and developed unknown skew, and also two approaches to follow-up clock synchronization using the confidence interval method.  ... 
doi:10.3390/s21051768 pmid:33806434 pmcid:PMC7961599 fatcat:j5fqis4m7vcq5onbd463anv7b4

Formal Verification of Device Discovery Mechanism using UPPAAL

Shivangi Arry, Amardeep Kaur
2012 International Journal of Computer Applications  
Wireless communication among the mobile devices is the growing area of research. Ad hoc networks are created among them for exchanging information over the small distances.  ...  Using the verification tool UPPAAL a Bluetooth ad hoc system is modeled to formally verify the device discovery mechanism.  ...  For communicating, Bluetooth devices organize themselves into small networks called piconets, comprising one master and up to seven slave devices, in which the frequency hopping sequences are synchronized  ... 
doi:10.5120/9392-3816 fatcat:me4fuxvuhbao5b5fyd4zhchlwy
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