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Mobile Emergency Alert System
The Mobile Emergency Alert System (M-EAS) is an information distribution system that utilizes existing digital television spectrum and towers to provide information in emergency situations using rich media. The system can push text, web pages, and video to compatible equipment, such as mobile DTV devices. M-EAS is different than existing 90-character Wireless Emergency Alerts (WEA) available to cellphones, as it allows video, audio, photos and graphics, too. Proponents of the technology point to modern reliance on mobile communication technologies and failures of the cellular network due to overload, power outage or other emergency-related damage. M-EAS does not rely on the network of cellular towers, instead making use of existing digital television broadcast equipment. M-EAS is being standardized by the Advanced Television Systems Committee as part of ATSC-M/H, the mobile digital TV standard. WRAL-TV in Raleigh, North Carolina, was the first commercial broadcaster in the Unit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rich Media
Interactive media normally refers to products and services on digital computer-based systems which respond to the user's actions by presenting content such as text, moving image, animation, video and audio. Since its early conception, various forms of interactive media have emerged with impacts on educational and commercial markets. With the rise of decision-driven media, concerns surround the impacts of cybersecurity and societal distraction. Definition Interactive media is a method of communication in which the output from the media comes from the input of the users. Interactive media works with the user's participation. The media still has the same purpose but the user's input adds interaction and brings interesting features to the system for better enjoyment. Development The analogue videodisc developed by NV Philips was the pioneering technology for interactive media. Additionally, there are several elements that encouraged the development of interactive media including ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mobile DTV
Mobile television is television watched on a small handheld or mobile device. It includes service delivered via mobile phone networks, received free-to-air via terrestrial television stations, or via satellite broadcast. Regular broadcast standards or special mobile TV transmission formats can be used. Additional features include downloading TV programs and podcasts from the Internet and storing programming for later viewing. According to the ''Harvard Business Review'', the growing adoption of smartphones allowed users to watch as much mobile video in three days of the 2010 Winter Olympics as they watched throughout the entire 2008 Summer Olympics, a five-fold increase. However, except in South Korea, consumer acceptance of broadcast mobile TV has been limited due to lack of compatible devices. Early mobile TV receivers were based on old analog television systems. They were the earliest televisions that could be placed in a coat pocket. The first was the Panasonic IC TV MOD ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wireless Emergency Alerts
Wireless Emergency Alerts (WEA, formerly known as the Commercial Mobile Alert System (CMAS), and prior to that as the Personal Localized Alerting Network (PLAN)), is an alerting network in the United States designed to disseminate emergency alerts to mobile devices such as cell phones and pagers. Organizations are able to disseminate and coordinate emergency alerts and warning messages through WEA and other public systems by means of the Integrated Public Alert and Warning System. Background The Federal Communications Commission proposed and adopted the network structure, operational procedures and technical requirements in 2007 and 2008 in response to the ''Warning, Alert, and Response Network (WARN) Act'' passed by Congress in 2006, which allocated $106 million to fund the program. CMAS will allow federal agencies to accept and aggregate alerts from the President of the United States, the National Weather Service (NWS) and emergency operations centers, and send the alerts to pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mobile Phone
A mobile phone, cellular phone, cell phone, cellphone, handphone, hand phone or pocket phone, sometimes shortened to simply mobile, cell, or just phone, is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area. The radio frequency link establishes a connection to the switching systems of a mobile phone operator, which provides access to the public switched telephone network (PSTN). Modern mobile telephone services use a cellular network architecture and, therefore, mobile telephones are called ''cellular telephones'' or ''cell phones'' in North America. In addition to telephony, digital mobile phones ( 2G) support a variety of other services, such as text messaging, multimedia messagIng, email, Internet access, short-range wireless communications ( infrared, Bluetooth), business applications, video games and digital photography. Mobile phones offering only those capabilities are known ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Advanced Television Systems Committee
The Advanced Television Systems Committee (ATSC) is an international nonprofit organization developing technical standards for digital terrestrial television and data broadcasting. ATSC's 120-plus member organizations represent the broadcast, broadcast equipment, motion picture, consumer electronics, computer, cable, satellite and semiconductor industries. ATSC was initially formed in 1983 to develop a first-generation digital television standard that could replace existing analog transmission systems. The new digital system became known as "ATSC 1.0." ATSC 1.0 is in use in the United States, Canada, Mexico, South Korea and Honduras and also in the Dominican Republic. ATSC then developed a next-generation digital television standard known as "ATSC 3.0.” ATSC 3.0 was commercially deployed in South Korea in May 2017 and was approved for voluntary use in the United States in November 2017. See also * ATSC tuner An ATSC (Advanced Television Systems Committee) tuner, oft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ATSC-M/H
ATSC-M/H (''Advanced Television Systems Committee - Mobile/Handheld'') is a U.S. standard for mobile digital TV that allows TV broadcasts to be received by mobile devices. ATSC-M/H is a mobile TV extension to preexisting terrestrial TV broadcasting standard ATSC A/53. It corresponds to the European DVB-H and 1seg extensions of DVB-T and ISDB-T terrestrial digital TV standards respectively. ATSC is optimized for a fixed reception in the typical North American environment and uses 8VSB modulation. The ATSC transmission method is not robust enough against Doppler shift and multipath radio interference in mobile environments, and is designed for highly directional fixed antennas. To overcome these issues, additional channel coding mechanisms are introduced in ATSC-M/H to protect the signal. As of 2021, ATSC-M/H is considered to have been a commercial failure. Evolution of mobile TV standard Requirements Several requirements of the new standard were fixed right from the beginning: * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WRAL-TV
WRAL-TV (channel 5) is a television station licensed to Raleigh, North Carolina, United States, serving as the NBC affiliate for the Research Triangle area. It is the flagship station of the locally based Capitol Broadcasting Company, which has owned the station since its inception. WRAL-TV is a sister station to Fox affiliate WRAZ (channel 50, also licensed to Raleigh), Class A Decades affiliate WNGT-CD (channel 34, licensed to both Smithfield and Selma), and radio stations WRAL (101.5 FM), WCMC-FM (99.9), WDNC (620 AM), and WCLY (1550 AM). The television stations share studios at Capitol Broadcasting Company headquarters on Western Boulevard in west Raleigh, while WRAL-TV's transmitter is located in Auburn, North Carolina. WRAL-TV has been affiliated with NBC since February 29, 2016, when it ended a 30-year affiliation with CBS (with CBS going to Goldsboro-licensed WNCN hannel 17on that date). This is channel 5's second stint with NBC; it was a primary affil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2011 Tōhoku Earthquake And Tsunami
The occurred at 14:46 JST (05:46 UTC) on 11 March. The magnitude 9.0–9.1 (M) undersea megathrust earthquake had an epicenter in the Pacific Ocean, east of the Oshika Peninsula of the Tōhoku region, and lasted approximately six minutes, causing a tsunami. It is sometimes known in Japan as the , among other names. The disaster is often referred to in both Japanese and English as simply 3.11 (read in Japanese). It was the most powerful earthquake ever recorded in Japan, and the fourth most powerful earthquake in the world since modern record-keeping began in 1900. The earthquake triggered powerful tsunami waves that may have reached heights of up to in Miyako in Tōhoku's Iwate Prefecture, Yomiuri Shimbun evening edition 2-11-04-15 page 15, nearby Aneyoshi fishery port (姉吉漁港)(Google map E39 31 57.8, N 142 3 7.6) 2011-04-15大震災の津波、宮古で38.9 m…明治三陸上回るby okayasu Akio (岡安 章夫) and which, in the Sendai area, traveled ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Television In The United States
Digital television in the United States is available via digital terrestrial television (DTT), digital cable, satellite television, and IPTV providers (including those delivered over private networks, and those delivered as over-the-top streaming television services over the public internet). Digital terrestrial television (DTT) uses the ATSC standards, replacing the NTSC standards used for analog television, and offering capabilities such as high definition (HD) signals and digital subchannels. All full-power television stations in the United States were required to shut down their analog signals, and transition exclusively to digital broadcasting by June 12, 2009. Class A low-power analog stations were required to transition by September 1, 2015, while all other low-power stations, as well as analog rebroadcasters, were required to transition by July 13, 2021. In November 2017, the FCC approved ATSC 3.0 (Next Gen TV), an updated version of the ATSC standards that supports Hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2012 Establishments In The United States
1 (one, unit, unity) is a number representing a single or the only entity. 1 is also a numerical digit and represents a single unit of counting or measurement. For example, a line segment of ''unit length'' is a line segment of length 1. In conventions of sign where zero is considered neither positive nor negative, 1 is the first and smallest positive integer. It is also sometimes considered the first of the infinite sequence of natural numbers, followed by 2, although by other definitions 1 is the second natural number, following 0. The fundamental mathematical property of 1 is to be a multiplicative identity, meaning that any number multiplied by 1 equals the same number. Most if not all properties of 1 can be deduced from this. In advanced mathematics, a multiplicative identity is often denoted 1, even if it is not a number. 1 is by convention not considered a prime number; this was not universally accepted until the mid-20th century. Additionally, 1 is the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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