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Telesoftware
The term telesoftware was coined by W.J.G. Overington who invented the concept in 1974; it literally means “software at a distance” and it often refers to the transmission of programs for a microprocessor or home computer via broadcast teletext, though the use of teletext was just a convenient way to implement the invention, which had been invented as a theoretical broadcasting concept previously. The concept being of producing local interactivity without the need for a return information link to a central computer. The invention arose as spin-off from research on function generators for a hybrid computer system for use in simulation of heat transfer in food preservation, and thus from outside of the broadcasting research establishments. Software bytes are presented to a terminal as pairs of standard teletext characters, thus utilizing an existing and well-proven broadcasting system. History Telesoftware was pioneered in the UK during the 1970s and 1980s, and a paper on th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timeline Of Teletext In The UK
This is a timeline of the history of teletext on television in the UK. . 1970s * 1972 ** October – Ceefax is announced by the BBC as a new service providing pages of text on ordinary television screens. * 1973 **April – The first transmission of Oracle takes place, during Engineering Announcements. * 1974 ** 23 September – The BBC's teletext service Ceefax goes live with 30 pages of information. * 1975 ** No events. * 1976 ** World System Teletext is adopted as the common way to broadcast teletext services through Europe with a display format of 24 rows by 40 columns of characters. * 1977 ** February – ITV Oracle broadcasts the first ever telesoftware broadcast on pages 101, 102 and 103. There is no reception equipment available to view the broadcast, but it gives the concept of a teletext service carrying software on some of its pages great practical credibility. This broadcast is observed on a public demonstration teletext television at the BBC Pebble Mill studio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teletext
Teletext, or broadcast teletext, is a standard for displaying text and rudimentary graphics on suitably equipped television sets. Teletext sends data in the broadcast signal, hidden in the invisible vertical blanking interval area at the top and bottom of the screen. The teletext decoder in the television buffers this information as a series of "pages", each given a number. The user can display chosen pages using their remote control. In broad terms, it can be considered as Videotex, a system for the delivery of information to a user in a computer-like format, typically displayed on a television or a dumb terminal, but that designation is usually reserved for systems that provide bi-directional communication, such as Prestel or Minitel. Teletext was created in the United Kingdom in the early 1970s by John Adams, Philips' lead designer for video display units to provide closed captioning to television shows for the hearing impaired. Public teletext information services were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multimedia Home Platform
Multimedia Home Platform (DVB-MHP) is an open middleware system standard designed by the DVB project for interactive digital television. The MHP enables the reception and execution of interactive, Java-based applications on a TV set. Interactive TV applications can be delivered over the broadcast channel, together with audio and video streams. These applications can be for example information services, games, interactive voting, e-mail, SMS or shopping. MHP applications can use an additional return channel that has to support IP. Deployment In May 2010 the largest deployments DVB-MHP are in Italy (DVB-T), Korea ( DVB-S), Belgium ( DVB-C) and Poland ( DVB-S) with trials or small deployments in Germany, Spain, Austria, Colombia, Uruguay and Australia. MHP service was also offered in Finland by Finnish Broadcasting Corporation ( Yleisradio), but the service was shut down at the end of 2007 after technical failure. The shutdown wasn't ever officially announced. Ultimately the r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computing (magazine)
''Computing'' is an online magazine published by The Channel Company for IT managers and professionals in the United Kingdom. The brand announced plans to launch in North America and Germany in 2023. , ''Computings circulation was verified by BPA Worldwide as 115,431. History Originally launched in 1973 as the official magazine of the British Computer Society and published by Haymarket Publishing, ''Computing'' is the longest continuously published magazine for IT professionals in the UK. In print it was largely a controlled circulation publication, mailed without charge to members of the British Computer Society and other accredited workers in the field of computing. A small minority of issues were sold on newsstands, with the bulk of funding for production arising from advertising. It was one of two magazines (the other being '' Accountancy Age'') purchased in the 1970s by Dutch publisher VNU Business Media to launch their business in the UK. VNU Business Publications was ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceefax
Ceefax () was the world's first teletext information service and a forerunner to the current BBC Red Button service. Ceefax was started by the BBC in 1974 and ended, after 38 years of broadcasting, at 23:32:19 BST (11:32 PM BST) on 23 October 2012, in line with the digital switchover completion in Northern Ireland. Pete Clifton Points of View 9 November 2008Test Cards and Ceefax BBC Archive To receive a desired page of text on a teletext-capable receiver, the user entered a three-digit page number on the device. The selected page was displayed on the user's screen as it was transmitted, requiring a wait of several seconds. There were many pages to choose from, and they could be displayed either on a black background or superimposed over the broadcast programme picture. This latter feature m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BASICODE
BASICODE was a computer project intended to create a unified standard for the BASIC programming language. BASIC was available on many popular home computers, but there were countless variants that were mostly computer compatibility, incompatible with each other. The project was initiated in 1980 by Hobbyscoop, a radio program of the Netherlands, Dutch broadcasting organisation Nederlandse Omroep Stichting (NOS). The language implementations were architecture-specific utility applications that executed calls of subroutines for text and audio defined in the BASICODE language standard, adapted according to the abilities of the host computer system. These applications, called ''Bascoders'', also enabled the sharing of data and programs across different computer platforms by defining a data format for the cassette tapes that were regularly used as storage media in the 1980s.''Weet ik!'' October 1991, ‘Basiscode-3’ by Bob Munniksma A BASICODE program stored on cassette could be loade ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Television
Digital television (DTV) is the transmission of television signals using Digital signal, digital encoding, in contrast to the earlier analog television technology which used analog signals. At the time of its development it was considered an innovative advancement and represented the first significant evolution in television technology since color television in the 1950s. Modern digital television is transmitted in high-definition television (HDTV) with greater resolution than analog TV. It typically uses a widescreen aspect ratio (commonly 16:9) in contrast to the narrower format (4:3) of analog TV. It makes more economical use of scarce radio spectrum space; it can transmit up to seven channels in the same Bandwidth (signal processing), bandwidth as a single analog channel, and provides many new features that analog television cannot. A digital television transition, transition from analog to digital broadcasting began around 2000. Different digital television broadcasting st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meteosat
The Meteosat series of satellites are geostationary meteorological satellites operated by EUMETSAT under the Meteosat Transition Programme (MTP) and the Meteosat Second Generation (MSG) program. The MTP program was established to ensure the operational continuity between the end of the successful Meteosat Operational Programme in 1995 and Meteosat Second Generation (MSG), which came into operation at the start of 2004 using improved satellites. The MSG program will provide service until the MTG (Meteosat Third Generation) program takes over. __TOC__ First generation The first generation of Meteosat satellites, Meteosat-1 to Meteosat-7, provided continuous and reliable meteorological observations from space to a large user community. Meteosat-1 to -7 have all now retired. When operational, the Meteosat First Generation provided images every half-hour in three spectral channels (Visible, Infrared) and Water vapor, Water Vapour, via the Meteosat Visible and Infrared Imager (MVIR ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Set-top Box
A set-top box (STB), also known as a cable converter box, cable box, receiver, or simply box, and historically television decoder or a converter, is an information appliance device that generally contains a Tuner (radio)#Television, TV tuner input and displays output to a television set, turning the source signal into media (communications), content in a form that can then be displayed on the television screen or other display device. It is designed to be placed alongside or "on top" (hence the name) of a television set. Set-top boxes are used in cable television, satellite television, terrestrial television and Internet Protocol television systems, as well as other uses such as digital media players ("streaming boxes"). Alternatives to set-top boxes are the smaller dongles, and television sets with built-in TV tuners. TV signal sources The signal source might be an Ethernet cable, a satellite dish, a coaxial cable (see cable television), a telephone line (including Digital subs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Micro User
''The Micro User'' (titled ''BBC Micro User'' in the first three issues) was a British specialist magazine catering to users of the BBC Microcomputer series, Acorn Electron, Acorn Archimedes and, to a limited extent, the Cambridge Z88. It had a comprehensive mix of reviews of games, application software, and the latest Acorn computers; type-in programs (duplicated on a " cover disk" which was available separately), a correspondence page offering help with computer problems, and approachable technical articles on programming and the BBC Micro's internals. The magazine hosted the long-running ''Body Building'' series by Mike Cook, in which each article introduced a small electronics project that could be built and connected to one of the BBC Micro's I/O ports. The project could be ordered in kit form or fully assembled, or the reader could source the parts and design as the articles contained a circuit diagram. There were regular columns on adventure gaming from two successive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BBC Micro Expansion Unit
A BBC Micro expansion unit, for the BBC Micro is one of a number of peripherals in a box with the same profile and styling as the main computer. Second processors The second processors are connected to Acorn's proprietary and trademarked Tube (BBC Micro), ''Tube'' interface. Only one second processor unit could be connected at a time to a BBC Micro, although a Master 128 could also have a co-processor fitted internally at the same time. The terminology of ''second'' processor was slightly misleading, since connected and switched on, the system worked on a "host-parasite" model, with the processor in the external unit taking control while the 6502 in the "main" computer simply took on responsibility for I/O. 6502 second processor The 6502 Second Processor (using a 6502C) was clocked at 3 MHz, a full 50% faster than the 6502 inside a BBC Model B, and also had 64 KB of random-access memory, RAM, of which typically 30–44 KB was free for application data (compared t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BBC Micro
The BBC Microcomputer System, or BBC Micro, is a family of microcomputers developed and manufactured by Acorn Computers in the early 1980s as part of the BBC's Computer Literacy Project. Launched in December 1981, it was showcased across several educational BBC television programmes, such as ''The Computer Programme'' (1982), ''Making the Most of the Micro'' and ''Computers in Control'' (both 1983), and ''Micro Live'' (1985). Created in response to the BBC's call for bids for a microcomputer to complement its broadcasts and printed material, Acorn secured the contract with its rapidly prototyped “Proton” system, which was subsequently renamed the BBC Micro. Although it was announced towards the end of 1981, production issues initially delayed the fulfilment of many orders, causing deliveries to spill over into 1982. Nicknamed the “Beeb”, it soon became a fixture in British schools, advancing the BBC’s goal of improving computer literacy. Renowned for its strong build q ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
