Edit Proposal: Milestone-Proposal:Emergency Warning Code Signal Broadcasting System You do not have permission to edit this page, for the following reason: You are not currently logged in. The action you have requested is limited to users in the group: Users. Please log in or create an account. Docket ID: (admins only) Thank you for proposing a technical achievement for possible recognition as an IEEE Milestone in Electrical Engineering and Computing. Your efforts help preserve the heritage of technology. Detailed information on the Milestone application process may be found at: Milestone Guidelines and How to Propose a Milestone. At least one of the proposer(s) must be an IEEE Member (including Student Member) in good standing. To the proposer’s knowledge, is this achievement subject to litigation? If the answer is "yes", the proposal cannot proceed further. None Yes No You must be able to answer "yes" to all of the following questions. If the answer to any of the following questions is "no", the proposal cannot proceed further. Contact us at email@example.com if you are unable to answer "yes" to all of the following and would still like to proceed. Is the achievement you are proposing more than 25 years old? Yes No Is the achievement you are proposing within IEEE’s designated fields as defined by IEEE Bylaw I-104.11, namely: Engineering, Computer Sciences and Information Technology, Physical Sciences, Biological and Medical Sciences, Mathematics, Technical Communications, Education, Management, and Law and Policy. Yes No Did the achievement provide a meaningful benefit for humanity? Yes No Was it of at least regional importance? Yes No Has an IEEE Organizational Unit agreed to pay for the milestone plaque(s)? Yes No Has an IEEE Organizational Unit agreed to arrange the dedication ceremony? Yes No Has the IEEE Section in which the milestone is located agreed to take responsibility for the plaque after it is dedicated? Yes No Has the owner of the site given permission to place an IEEE plaque? Yes No Year or range of years in which the achievement occurred: Title of the proposed milestone. (Include date or date range in title. Example: “Alternating Current Electrification, 1886”) Please provide a plaque citation in English summarizing the achievement and its significance. Text absolutely limited by plaque dimensions to 70 words; 60 is preferable for aesthetic reasons. NOTE: The IEEE History Committee shall have final determination on the wording of the citation. Names of living persons are not normally used in citations. Exceptions to this are cases where the person's name is linked to the achievement itself (e.g. the Lempel-Ziv algorithm, Maxwell's Equations, etc.) or where the person's name is so widely recognizeable to the general public that it makes sense to use it. When used, the names should be the names of the engineers, scientists, or technologists who actually made the achievement, rather than managers or executives. For more information and suggestions about writing milestone citations, please visit Helpful Hints on Citations, Plaque Locations. NHK (Japan Broadcasting Corporation) began broadcasting emergency warning code signals in 1985. The system embedded signals within AM and FM radio broadcasts that provided reliable and prompt transmission of emergency warning information to the public. During the course of digital TV standardization, the warning codes were integrated into technical standards of international satellite and terrestrial broadcasting. In what IEEE section(s) will the milestone plaque(s) reside? Please specify the IEEE Organizational Unit(s) which have agreed to sponsor the Milestone, and supply name and contact information for the senior officer from those OU(s). Sponsorship has three aspects: 1) Payment for the cost of the plaque(s), 2) Arranging the dedication ceremony, and 3) agreeing to monitor the plaque and to let IEEE History Center staff know in case the plaque needs to be moved, is no longer secure, etc. Number 3 must be done by the IEEE Section(s) in which the plaque(s) is located, but aspects 1 and 2 can be done by any IEEE Organizational Unit, and they need not be the same one. Please note: your email address and contact information will be masked on the website for privacy reasons. Only IEEE History Center Staff will be able to view the email address. IEEE Organizational Unit(s) paying for milestone plaque(s) Unit: Senior Officer Name: E-mail: Unit: Senior Officer Name: E-mail: IEEE Organizational Unit(s) arranging the dedication ceremony Unit: Senior Officer Name: E-mail: Unit: Senior Officer Name: E-mail: IEEE section(s) monitoring the plaque IEEE Section: IEEE Section Chair name: IEEE Section Chair e-mail: IEEE Section: IEEE Section Chair name: IEEE Section Chair e-mail: Milestone proposer(s) Proposer name: Proposer email: Proposer name: Proposer email: Street address(es) and GPS coordinates of the intended milestone plaque site(s). Please include coordinates in decimal format rather than degrees. What is the intended site(s) of the milestone plaque(s) relation to the achievement? The intended site(s) must have a direct connection with the achievement (e.g. where developed, invented, tested, demonstrated, installed, or operated, etc.). A museum where a device or example of the technology is displayed, or the university where the inventor studied, are not, in themselves, sufficient connection for a milestone plaque. Also, please Describe briefly the intended site(s) of the milestone plaque(s). (e.g. Is it corporate buildings? Historic Site? Residential? Are there other historical markers already at the site?) Are the original buildings extant? Please provide the details of the mounting, i.e. on the outside of the building, in the ground floor entrance hall, on a plinth on the grounds, etc. How is the intended plaque site protected/secured, and in what ways is it accessible to the public? If visitors to the plaque site will need to go through security, or make an appointment, please give details as well as the contact information visitors will need in order to arrange to visit the plaque. Who is the present owner of the site(s)? In the space below, please describe in detail: the historic significance of the achievement, its importance to the evolution of electrical and computer engineering and science, its importance to regional/national/international development, its benefits to humanity, the ways the achievement was a significant advance rather than an incremental improvement of existing technology. The material submitted here will constitute the main descriptive article on the ETHW website for readers to learn about the milestone. Space is unlimited, and detail is encouraged. Most milestones require 1000 to 1500 words of support, however there is no word limit. The article should be readable by a wide audience that includes practicing engineers, scholars of history, and the general public. Some examples of the text of good milestone articles are First Radio Astronomical Observations Using Very Long Baseline Interferometry] and G3_Facsimile International Standardization of G3 Facsimile (Do not worry about the formatting of the page, IEEE History Center Staff will do that afterwards.) What is the historical significance of the work (its technological, scientific, or social importance)? The “Basic Plan of Protection against Disasters in a Tokai Earthquake”, based on “the Act on Special Measures against Large-scale Earthquakes” that was enacted in 1978 by the Japanese Government was proclaimed in anticipation that a large-scale earthquake would occur in the Tokai area. Part of this plan was to warn the public of earthquakes and tsunamis through television and radio. However, information on disaster prediction cannot be received if televisions or radios at homes are not turned on even if this information is promptly and properly transmitted. Therefore, it is necessary to transmit control signals for emergency warnings on broadcasting waves, which will automatically turn on home receivers when emergency earthquake or tsunami information must be promptly sent. NHK Science and Technology Research Laboratories started to research and develop a broadcasting system to achieve this objective in 1979 that could ensure code signals for emergency warnings were received and home receivers were turned on . Broadcasting stations sent code signals for emergency control before programs on emergency warnings were broadcast with this system of broadcasting code signals for emergency warnings, and the receivers dedicated to this system would always be waiting for these code signals that controlled emergency warnings. When the code signals were detected, the receivers turned on radios or televisions so that people could listen to or watch emergency programs. NHK achieved this objective by using frequency shift keying (FSK) code signals that were theoretically and rigorously selected to obtain remarkably high reliability. The Japanese Government adopted the technologies for the system of broadcasting the code signals for emergency warnings as a national technical standard. NHK began the operation of this system on September 1, 1985 following the directives of the Prime Minister, who responded to a request by the Governor of Shizuoka Prefecture in the Tokai area. NHK currently broadcasts test code signals for emergency warnings before noon on the first day of every month, to ascertain whether the receivers of code signals for emergency warnings are functioning. The historical significance of the development and operation of this system is fourfold. 1. The system broadcasts codes that do not include ordinary information, such as sounds, images, or data. 2. The target of the system is not people, but machines (receivers dedicated to this system). 3. The system is directly related to broadcasting that conveys very important information regarding people’s lives and demise. 4. The system is remarkable and extremely reliable. When there are no code signals for emergency warnings, it will not malfunction because of program sound and noise, and when the code signals for emergency warnings are transmitted, the receivers will function without failures of any kind. This is a completely unique, exceptional, and incomparable system, which is sure to be recorded in the history of broadcasting technology. Secure and prompt transmission of emergency information to the home, such as predictions of large-scale earthquakes and tsunamis, has been achieved due to this system that broadcasts code signals for emergency warnings. The first actual broadcast of the code signals occurred on March 18, 1987. This was for a tsunami warning after an earthquake had occurred in the Kyushu area. The code signals of the broadcasting system have been transmitted 22 times thus far, and have helped and saved many people’s lives. The dedicated receivers, and conventional radios and TVs with the circuits for receiving the code signals of emergency warnings installed are continuously being sold. The Fire and Disaster Management Agency, which is in charge of disaster relief, recognized the system’s importance and is actively promoting it. Furthermore, this system of broadcasting code signals for emergency warnings became well-known to the world when a M 9.1 earthquake struck and a large-scale tsunami in its aftermath occurred off Sumatra in December 2004, which caused a great deal of damage and inflicted many casualties. The system was adopted as an International Telecommunication Union (ITU) recommendation in 2007 , and was published in the Asia-Pacific Broadcasting Union (ABU) technical handbook in 2008 . In this digital era, the EWBS standardization activity for digital terrestrial television is also promoted. In order to harmonize the implementation processes among countries adopting ISDB-T, the “ISDB-T International Forum” was organized. As of 2013, there are 13 countries participating: Argentina, Bolivia, Botswana, Brazil, Costa Rica, Chile, Ecuador, Paraguay, the Philippines, Peru, Uruguay, Venezuela and Japan. The document for EWBS implementation is published and widely accepted . What obstacles (technical, political, geographic) needed to be overcome? The system for broadcasting code signals for emergency warnings must activate dedicated receivers to turn on conventional radios and TVs to ensure that people promptly listen to and watch programs on emergency broadcasts even if reception is poor or they experience severe conditions. As the warning control code signals are transmitted through broadcasting paths, program sound and noise interferes with the dedicated receivers. Thus, the system must meet four requirements: A) The dedicated receiver of this system must not operate erroneously as a result of broadcasting program sound signals or accompanying noise (zero malfunction), B) It must operate without failures even under severe receiving conditions when the code signals for emergency warnings are transmitted (secure operation), C) It must be extremely reliable and consume limited amounts of power because it must always be on stand-by for warning signals, and D) It has to be activated quickly (It is very difficult to satisfy both A) and B) since they conflict in some cases). Frequency shift keying the code signals based on digital technology is used to meet these requirements. The most important thing is the selection of code patterns to prevent malfunctions. The probability of program sound or noise matching the control code signal decreases exponentially as the code length increases. A code length of 64 bits makes the probability of signals matching almost zero. A longer code, on the other hand, lowers the probability of precise reception as a result of noise and interference in the transmission path. Therefore, it was decided that a code length of 16 bits be used as the basic fixed code and that by receiving the fixed code four times, an equivalent reception of 64 bit code would be achieved, which meant there were no malfunctions. The pattern of the fixed code was carefully selected so that it did not match the program sound and noise, and allowed word synchronization. It was also separated from other code patterns to avoid matching other codes so that the same pattern as the fixed code was formed when using the variable code, which will be described later. The FSK control signals were selected in the middle range of the audio frequency, i.e., 640 and 1024 Hz, at a bit-rate of 64 bit/s, so that they could be transmitted by any broadcasting media as a warning sound, which is now familiar to most people living in Japan. The second requirement was to quickly activate the dedicated receiver. The receiver in conventional digital transmission systems sets the clock up first and then the signals are detected. Setting up the clock takes time. As it was necessary to convey the emergency information to people as quickly as possible, an electronic circuit was invented that could immediately detect the broadcasting signals for emergency warnings. This circuit found the matching codes by examining incoming code patterns bit by bit using an independent synchronization in the receiver. Inexpensive crystal oscillators used in ordinary watches were used for this purpose. They could detect code signals for emergency warnings within a very short time without the clock set-up code or the set-up procedure. Field tests demonstrated that medium frequency waves could be transmitted beyond 1,000 kilometers with a fading phenomenon at night, and through ionosphere reflections. This indicated that receivers located in remote areas that did not need to receive particular programs on emergency warnings might be turned on. This problem was solved by adding an area classification code. This system also had to be able to deal with circumstances in which terrorists recorded the control signals. They can turn on receivers by using recorded control signals, break into conventional broadcasting waves, and broadcast their own information. A time classification code containing the year, month, and day was also transmitted as a counter measure against such malicious acts. The receiver only turned on when its clock matched the time classification code. This eliminated the chance of terrorists taking over broadcasts. There are two kinds of control signals, i.e. a start and an end signal. The start signal denotes the beginning of the program to broadcast emergency warnings and activates equipped receivers . The end signal denotes the end of the program to broadcast emergency warnings and the activated receiver returns to its original state. The start and end signals are basically composed of fixed codes and classification codes which are 16 bit code words. Fixed code is the most important in the early warning broadcasting system (EWBS) control signal. The classification code carries additional information such as area and time classifications. The basic unit is 96-bit length, which consists of three fixed codes, i.e., the area classification, the month-date classification, and the year-time classification codes. Furthermore, each fixed code is accompanied by a kind of specified classification code, which takes 1.5 s. The start signal usually repeats the 96-bit length unit ten times to ensure reliable reception. The end signal usually repeats the 96-bit length unit and 92-bit length of the no-signal period four times. What features set this work apart from similar achievements? There are various methods of multiplexing the control signals with radio and television sound. The Emergency Broadcast System (EBS) used from 1963 to 1997 in the U.S.A. was a similar broadcasting system. EBS was a tone signal system that used two kinds of sound frequencies. The EBS’s signal was a combination of the sine waves of 853 and 960 Hz to obtain the audience's collective attention. The tone signal system was used earlier because it was theoretically simple. However, it was prone to errors when the signal frequencies of the broadcasting programs were the same as the tone signals. It was therefore necessary to distinguish them from the program sound by sending out tone signals for a sufficiently long time to ensure operation. It was also not appropriate to operate receivers in restricted regional areas for emergency warning broadcasts. The system we propose of broadcasting code signals for emergency warnings is extremely reliable. That means these described measures ensure secure operation and zero malfunctions because it uses FSK with two frequencies in the middle band of sound and the code pattern is meticulously and rigorously selected. It can convey emergency information exclusively to areas that need the information, and take on anti-hijacking measures by adopting area classification codes and time classification codes. The control code signals can be transmitted on all broadcast media such as AM radio, FM radio, or television. Conventional digital systems require clock set-up codes for clock set-ups that take too long. However, this proposed system can promptly turn on receivers with independent bit synchronization using an inexpensive crystal oscillator. That means it can activate receivers quickly because it uses digital technology without the need for clock set-ups. The system is extremely reliable and inexpensive. It does not malfunction, operates without failures, and conveys urgent emergency information to people promptly when they need it. Supporting texts and citations to establish the dates, location, and importance of the achievement. You must supply the texts or excerpts themselves, not just the references. Minimum of five (5), but as many as needed to support the milestone, such as patents, contemporary newspaper articles, journal articles, or chapters in scholarly books. At least one of the references must be from a scholarly book or journal article. 'Scholarly' is defined as peer-reviewed, with references, and published. The full reference, in English, must be uploaded, not just the citation. See below section for details on uploading material to the website. All supporting materials must be in English, or accompanied by an English translation. 1.Seiichi Namba, “A New Approach to the Design of Receiver Control Code for Broadcasting System － An application to the regional code of emergency broadcasting system－”, The Technical Report, The Institute of Television Engineers, May 27, 1982 (See Attached file). 2. Seiichi Namba and Hisakichi Yamane, “Attention Signal System for Emergency Alert Broadcasting”, NHK Laboratories Note, No.268, January 1982, (See Attached file) 3．The chronological table of “20th Century Broadcasting History (On NHK in August and September, 1985)”,Edited by Japan Broadcasting Corporation (NHK), Nippon Broadcasting Publishing Corporation, 2001 (See Attached file). 4. Kazuyoshi Shogen, Yasuhiro Ito, Hiroyuki Hamazumi and Makoto Taguchi，“Implementation of Emergency Warning Broadcasting System in the Asia Pacific Region”, ITU/ESCAP Disaster Communications Workshop, 12 – 15 December 2006, Bangkok, Thailand http://www.itu.int/ITU-D/emergencytelecoms/events/ThailandWorkshop/final1/Session%209/SESSION%209%20[NHK]%20Dr%20Kazuyoshi%20SHOGEN.pdf 5. RECOMMENDATION ITU-R BT.1774-1, “Use of satellite and terrestrial broadcast infrastructures for public warning, disaster mitigation and relief”, 04/2007 http://www.itu.int/dms_pubrec/itu-r/rec/bt/R-REC-BT.1774-1-200704-I!!PDF-E.pdf 6. HANDBOOK ON EWBS (-Emergency Warning Broadcasting System-), Technical Committee, Asia-Pacific Broadcasting Union, 2008 http://www.abu.org.my/upload/EWBS_Handbook.pdf 7. ISDB-T harmonization document, part 3: Emergency Warning Broadcast System, 2013 http://www.dibeg.org/techp/aribstd/international_harmonization/130528_EWBS_harmonization_approved.pdf 8. Jyunichi Ishida, et al. "BROADCAST AND NEW MEDIA", pp.249-256, Maruzen Advanced Technology,1992, (See Attached file) Supporting materials (supported formats: GIF, JPEG, PNG, PDF, DOC) which can be made publicly available on the IEEE History Center’s website (i.e. unencumbered by copyright, or with the copyright holder’s permission). All supporting materials must be in English, or if not in English, accompanied by an English translation. You must supply the texts or excerpts themselves, not just the references. Images and photographs are especially appreciated, however, it is necessary that you list the copyright owner for these and obtain the copyright owner’s permission to reuse. For documents that are copyright-encumbered, or which you do not have rights to post, email the documents themselves to firstname.lastname@example.org. Please see the Milestone Program Guidelines for more information. To add attachments, first upload the file and add by adding the text: [[Media:(filename)]] For example, if the file you uploaded was named "Milestone Reference.pdf", include the text: [[Media:Milestone Reference.pdf]] in the appropriate field. -1- ITE_Report_RE82-13_pp33-38_English.pdf -2- NHK Laboratories, Note No. 268, January 1982.pdf -3- EWBS_launched_description.pdf -8- BROADCAST AND NEW MEDIA（EWBS)_English.pdf EWBS_overview.pdf Chroological_record_EWBS_NHK.pdf Please email a jpeg or PDF a letter in English, or with English translation, from the site owner(s) giving permission to place IEEE milestone plaque on the property, and a letter (or forwarded email) from the appropriate Section Chair supporting the Milestone application to email@example.com with the subject line "Attention: Milestone Administrator." Note that there are multiple texts of the letter depending on whether an IEEE organizational unit other than the section will be paying for the plaque(s). 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