The Convergence of Telecommunications and Broadcasting in Japan
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Application of Closed Circuit Television for Traffic Surveillance in Texas
APPLICATION OF CLOSED CIRCUIT TELEVISION FOR TRAFFIC SURVEILLANCE IN TEXAS by William R. McCasland Research Engineer Texas Transportation Institute and Raymond G. Biggs Engineering Technician Texas Highway Department Research Report Number 139-11 Freeway Control and Information Systems Research Study Number 2-8-69-139 Sponsored by The Texas Highway Department In Cooperation with the U.S. Department of Transportation Federal Highway Administration TEXAS TRANSPORTATION INSTITUTE Texas A&M University College Station, Texas August 1971 ABSTRACT Closed circuit television (CCTV) has been used for surveillance of traffic and transportation facilities for many years. However, the num ber of operating systems are few bec,ause their effectiveness as a long term surveillance system has been suspect due to the inclusion of human observers in the surveillance loop. The use of CCTV for short intensive observations necessary to research and traffic studies has been success ful. The accelerating development of area wide traffic surveillance, control, and communications systems for urban areas will increase the interest in the use of CCTV as part of the surveillance system. There are four operating CCTV systems in Texas that are used for traffic sur veillance. Each system has different design and operating characteris tics. DISCLAIMER The opinions, findings, and conclusions expressed ,or implied in this report are those of the research agency and not necessarily those of the Texas Highway Department or the Federal Highway Administration. SUMMARY There are four closed circuit television systems in Texas that are designed and operated for traffic surveillance. Each system has different design and operating characteristics to satisfy the surveillance require ments. -
A Brief History of Radio Broadcasting in Africa
A Brief History of Radio Broadcasting in Africa Radio is by far the dominant and most important mass medium in Africa. Its flexibility, low cost, and oral character meet Africa's situation very well. Yet radio is less developed in Africa than it is anywhere else. There are relatively few radio stations in each of Africa's 53 nations and fewer radio sets per head of population than anywhere else in the world. Radio remains the top medium in terms of the number of people that it reaches. Even though television has shown considerable growth (especially in the 1990s) and despite a widespread liberalization of the press over the same period, radio still outstrips both television and the press in reaching most people on the continent. The main exceptions to this ate in the far south, in South Africa, where television and the press are both very strong, and in the Arab north, where television is now the dominant medium. South of the Sahara and north of the Limpopo River, radio remains dominant at the start of the 21St century. The internet is developing fast, mainly in urban areas, but its growth is slowed considerably by the very low level of development of telephone systems. There is much variation between African countries in access to and use of radio. The weekly reach of radio ranges from about 50 percent of adults in the poorer countries to virtually everyone in the more developed ones. But even in some poor countries the reach of radio can be very high. In Tanzania, for example, nearly nine out of ten adults listen to radio in an average week. -
Radio Communications in the Digital Age
Radio Communications In the Digital Age Volume 1 HF TECHNOLOGY Edition 2 First Edition: September 1996 Second Edition: October 2005 © Harris Corporation 2005 All rights reserved Library of Congress Catalog Card Number: 96-94476 Harris Corporation, RF Communications Division Radio Communications in the Digital Age Volume One: HF Technology, Edition 2 Printed in USA © 10/05 R.O. 10K B1006A All Harris RF Communications products and systems included herein are registered trademarks of the Harris Corporation. TABLE OF CONTENTS INTRODUCTION...............................................................................1 CHAPTER 1 PRINCIPLES OF RADIO COMMUNICATIONS .....................................6 CHAPTER 2 THE IONOSPHERE AND HF RADIO PROPAGATION..........................16 CHAPTER 3 ELEMENTS IN AN HF RADIO ..........................................................24 CHAPTER 4 NOISE AND INTERFERENCE............................................................36 CHAPTER 5 HF MODEMS .................................................................................40 CHAPTER 6 AUTOMATIC LINK ESTABLISHMENT (ALE) TECHNOLOGY...............48 CHAPTER 7 DIGITAL VOICE ..............................................................................55 CHAPTER 8 DATA SYSTEMS .............................................................................59 CHAPTER 9 SECURING COMMUNICATIONS.....................................................71 CHAPTER 10 FUTURE DIRECTIONS .....................................................................77 APPENDIX A STANDARDS -
A Guide to Radio Communications Standards for Emergency Responders
A GUIDE TO RADIO COMMUNICATIONS STANDARDS FOR EMERGENCY RESPONDERS Prepared Under United Nations Development Programme (UNDP) and the European Commission Humanitarian Office (ECHO) Through the Disaster Preparedness Programme (DIPECHO) Regional Initiative in Disaster Risk Reduction March, 2010 Maputo - Mozambique GUIDE TO RADIO COMMUNICATIONS STANDARDS FOR EMERGENCY RESPONDERS GUIDE TO RADIO COMMUNICATIONS STANDARDS FOR EMERGENCY RESPONDERS Table of Contents Introductory Remarks and Acknowledgments 5 Communication Operations and Procedures 6 1. Communications in Emergencies ...................................6 The Role of the Radio Telephone Operator (RTO)...........................7 Description of Duties ..............................................................................7 Radio Operator Logs................................................................................9 Radio Logs..................................................................................................9 Programming Radios............................................................................10 Care of Equipment and Operator Maintenance...........................10 Solar Panels..............................................................................................10 Types of Radios.......................................................................................11 The HF Digital E-mail.............................................................................12 Improved Communication Technologies......................................12 -
Digital Television Systems
This page intentionally left blank Digital Television Systems Digital television is a multibillion-dollar industry with commercial systems now being deployed worldwide. In this concise yet detailed guide, you will learn about the standards that apply to fixed-line and mobile digital television, as well as the underlying principles involved, such as signal analysis, modulation techniques, and source and channel coding. The digital television standards, including the MPEG family, ATSC, DVB, ISDTV, DTMB, and ISDB, are presented toaid understanding ofnew systems in the market and reveal the variations between different systems used throughout the world. Discussions of source and channel coding then provide the essential knowledge needed for designing reliable new systems.Throughout the book the theory is supported by over 200 figures and tables, whilst an extensive glossary defines practical terminology.Additional background features, including Fourier analysis, probability and stochastic processes, tables of Fourier and Hilbert transforms, and radiofrequency tables, are presented in the book’s useful appendices. This is an ideal reference for practitioners in the field of digital television. It will alsoappeal tograduate students and researchers in electrical engineering and computer science, and can be used as a textbook for graduate courses on digital television systems. Marcelo S. Alencar is Chair Professor in the Department of Electrical Engineering, Federal University of Campina Grande, Brazil. With over 29 years of teaching and research experience, he has published eight technical books and more than 200 scientific papers. He is Founder and President of the Institute for Advanced Studies in Communications (Iecom) and has consulted for several companies and R&D agencies. -
Mass Media in the USA»
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by BSU Digital Library Mass Media In The USA K. Khomtsova, V. Zavatskaya The topic of the research is «Mass media in the USA». It is topical because mass media of the United States are world-known and a lot of people use American mass media, especially internet resources. The subject matter is peculiarities of different types of mass media in the USA. The aim of the survey is to study the types of mass media that are popular in the USA nowadays. To achieve the aim the authors fulfill the following tasks: 1. to define the main types of mass media in the USA; 2. to analyze the popularity of different kinds of mass media in the USA; 3. to mark out the peculiarities of American mass media. The mass media are diversified media technologies that are intended to reach a large audience by mass communication. There are several types of mass media: the broadcast media such as radio, recorded music, film and tel- evision; the print media include newspapers, books and magazines; the out- door media comprise billboards, signs or placards; the digital media include both Internet and mobile mass communication. [4]. In the USA the main types of mass media today are: newspapers; magazines; radio; television; Internet. NEWSPAPERS The history of American newspapers goes back to the 17th century with the publication of the first colonial newspapers. It was James Franklin, Benjamin Franklin’s older brother, who first made a news sheet. -
Research on the Safe Broadcasting of Television Program
MATEC Web of Conferences 63, 04002 (2016) DOI: 10.1051/matecconf/20166304002 MMME 2016 Research on the Safe Broadcasting of Television Program Jin Bao SONG1,a, Jin Hong SONG2 and Jian Ping CHAI1 1Information Engineering School, Communication University of China, Beijing, China 2Shandong Gold Mining Jiaojia Gold Mine (Laizhou) co.,LTD Abstract. The existing way of broadcasting and television monitoring has a lot of problems in China. On the basis of the signal technical indicators monitoring in the present broadcasting and television monitoring system, this paper further extends the function of the monitoring network in order to broaden the services of monitoring business and improve the effect and efficiency of monitoring work. The problem of identifying video content and channel in television and related electronic media is conquered at a low cost implementation way and the flexible technology mechanism. The coverage for video content and identification of the channel is expanded. The informative broadcast entries are generated after a series of video processing. The value of the numerous broadcast data is deeply excavated by using big data processing in order to realize a comprehensive, objective and accurate information monitoring for the safe broadcasting of television program. 1 Introduction paper is the development of cheap monitoring hardware devices which can be widely deployed to the village, so The existing way of broadcasting and television the actual situation of the user terminal broadcasting can monitoring has a lot of problems in China. Firstly, the be monitored by the administration of radio, film and existing way of monitoring is the front-end monitoring television. -
History of Radio Broadcasting in Montana
University of Montana ScholarWorks at University of Montana Graduate Student Theses, Dissertations, & Professional Papers Graduate School 1963 History of radio broadcasting in Montana Ron P. Richards The University of Montana Follow this and additional works at: https://scholarworks.umt.edu/etd Let us know how access to this document benefits ou.y Recommended Citation Richards, Ron P., "History of radio broadcasting in Montana" (1963). Graduate Student Theses, Dissertations, & Professional Papers. 5869. https://scholarworks.umt.edu/etd/5869 This Thesis is brought to you for free and open access by the Graduate School at ScholarWorks at University of Montana. It has been accepted for inclusion in Graduate Student Theses, Dissertations, & Professional Papers by an authorized administrator of ScholarWorks at University of Montana. For more information, please contact [email protected]. THE HISTORY OF RADIO BROADCASTING IN MONTANA ty RON P. RICHARDS B. A. in Journalism Montana State University, 1959 Presented in partial fulfillment of the requirements for the degree of Master of Arts in Journalism MONTANA STATE UNIVERSITY 1963 Approved by: Chairman, Board of Examiners Dean, Graduate School Date Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. UMI Number; EP36670 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy submitted. In the unlikely event that the author did not send a complete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion. UMT Oiuartation PVUithing UMI EP36670 Published by ProQuest LLC (2013). -
Evolution of Access Network Sharing and Its Role in 5G Networks
applied sciences Review Evolution of Access Network Sharing and Its Role in 5G Networks Nima Afraz * , Frank Slyne , Harleen Gill and Marco Ruffini * CONNECT Centre, Trinity College, The University of Dublin, 2 Dublin, Ireland; [email protected] (F.S.); [email protected] (H.G.) * Correspondence: [email protected] (N.A.); marco.ruffi[email protected] (M.R.) Received: 3 October 2019; Accepted: 18 October 2019; Published: 28 October 2019 Abstract: This paper details the evolution of access network sharing models from legacy DSL to the most recent fibre-based technology and the main challenges faced from technical and business perspectives. We first give an overview of existing access sharing models, that span physical local loop unbundling and virtual unbundled local access. We then describe different types of optical access technologies and highlight how they support network sharing. Next, we examine how the concept of SDN and network virtualization has been pivotal in enabling the idea of “true multi-tenancy”, through the use of programmability, flexible architecture and resource isolation. We give examples of recent developments of cloud central office and OLT virtualization. Finally, we provide an insight into the role that novel business models, such as blockchain and smart contract technology, could play in 5G networks. We discuss how these might evolve, to provide flexibility and dynamic operations that are needed in the data and control planes. Keywords: access networks; network sharing; 5G networks; multi tenancy; optical access; sharing economics 1. Introduction By its nature, a telecommunications network is a shared resource that interconnects multiple nodes. Network sharing is part of a fundamental principle of statistical multiplexing of link capacity. -
Broadcast Television (1945, 1952) ………………………
Transformative Choices: A Review of 70 Years of FCC Decisions Sherille Ismail FCC Staff Working Paper 1 Federal Communications Commission Washington, DC 20554 October, 2010 FCC Staff Working Papers are intended to stimulate discussion and critical comment within the FCC, as well as outside the agency, on issues that may affect communications policy. The analyses and conclusions set forth are those of the authors and do not necessarily reflect the view of the FCC, other Commission staff members, or any Commissioner. Given the preliminary character of some titles, it is advisable to check with the authors before quoting or referencing these working papers in other publications. Recent titles are listed at the end of this paper and all titles are available on the FCC website at http://www.fcc.gov/papers/. Abstract This paper presents a historical review of a series of pivotal FCC decisions that helped shape today’s communications landscape. These decisions generally involve the appearance of a new technology, communications device, or service. In many cases, they involve spectrum allocation or usage. Policymakers no doubt will draw their own conclusions, and may even disagree, about the lessons to be learned from studying the past decisions. From an academic perspective, however, a review of these decisions offers an opportunity to examine a commonly-asserted view that U.S. regulatory policies — particularly in aviation, trucking, and telecommunications — underwent a major change in the 1970s, from protecting incumbents to promoting competition. The paper therefore examines whether that general view is reflected in FCC policies. It finds that there have been several successful efforts by the FCC, before and after the 1970s, to promote new entrants, especially in the markets for commercial radio, cable television, telephone equipment, and direct broadcast satellites. -
EVOLUTION and CONVERGENCE in TELECOMMUNICATIONS 2002 2Nd Edition 2005
the united nations 11 abdus salam educational, scientific and cultural international organization ISBN 92-95003-16-0 centre for theoretical international atomic physics energy agency lecture notes EVOLUTION AND CONVERGENCE IN TELECOMMUNICATIONS 2002 2nd Edition 2005 editors S. Radicella D. Grilli ICTP Lecture Notes EVOLUTION AND CONVERGENCE IN TELECOMMUNICATIONS 11 February - 1 March 2002 Editors S. Radicella The Abdus Salam ICTP, Trieste, Italy D. Grilli The Abdus Salam ICTP, Trieste, Italy EVOLUTION AND CONVERGENCE IN TELECOMMUNICATIONS - First edition Copyright © 2002 by The Abdus Salam International Centre for Theoretical Physics The Abdus Salam ICTP has the irrevocable and indefinite authorization to reproduce and dissem• inate these Lecture Notes, in printed and/or computer readable form, from each author. ISBN 92-95003-16-0 Printed in Trieste by The Abdus Salam ICTP Publications & Printing Section iii PREFACE One of the main missions of the Abdus Salam International Centre for Theoretical Physics in Trieste, Italy, founded in 1964 by Abdus Salam, is to foster the growth of advanced studies and research in developing countries. To this aim, the Centre organizes a large number of schools and workshops in a great variety of physical and mathematical disciplines. Since unpublished material presented at the meetings might prove of great interest also to scientists who did not take part in the schools the Centre has decided to make it available through a new publication titled ICTP Lecture Note Series. It is hoped that this formally structured pedagogical material in advanced topics will be helpful to young students and researchers, in particular to those working under less favourable conditions. -
A~'? ~1 I0 4 THRU) (ACCESSION NUMBER)
SATELLITES PROGRAM ON APPLICATION OF COMMUNICATIONS TO EDUCATIONAL DEVELOPMENT WASHINGTON UNIVERSITY May, 1971 Report No. T-71/2 STILL-PICTURE TELEVISION (SPTV) TRANSMISSION Gulab Sharma A~'? ~1 i0 4 THRU) (ACCESSION NUMBER) O~ l _(PAGES) Z3 (NASACRORM"ORADNUMBE REPRODUCED BY- NATIONAL TECHNICAL INFORMATION SERVICE K U S DEPARTMENT OFCOMMERCE SPRINGFIELD, VA. 22161 / MISSOURI 63130 WASHINGTON UNIVCRSITY / SAINT LOUIS PROGRAM ON APPLICATION OF COMMUNICATIONS SATELLITES TO EDUCATIONAL DEVELOPMENT WASHINGTON UNIVERSITY Report No T-71/2 May, 1971 STILL-PICTURE TELEVISION (SPTV) TRANSMISSION Gulab Sharma I This research is supported by the National Aeronautics and Space Administration under Grant No Y/NGL-26-08-054 and it does not necessarily represent the views of either the research team as a whole or NASA WASHINGTON UNIVERSITY SEVER INSTITUTE OF TECHNOLOGY ABSTRACT STILL-PICTURE TELEVISION TRANSMISSION by Gulab Sharma ADVISOR: Professor D.L. Snyder June, 1971 Saint Louis, Missouri To produce a diversity of program material in a limited frequency spectrum, various multichannel, continuous-audio still-video, television transmission-systems, compatible to the existing systems, have been suggested and investigated. In this report, we categorize and describe these alternative systems and identify some of the system parameters and con straints. The issues explored are: the number of still picture channels that can be realized in a limited spectrum, the interrelation of various parameters with system con straints, and general system considerations. iii Preceding page blank TABLE OF CONTENTS No. Page 1. Introduction.....................................1 1.1 Main Objective and Scope ................... 2 1.2 Television Broadcast Standards ............. 3 1.3 System Performance Objectives .............. 4 1.4 Subjective Picture Quality ................