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Telidon
Telidon (from the Greek words τῆλε, ''tele'' "at a distance" and ἰδών, ''idon'' "seeing") was a videotex/teletext service developed by the Canada, Canadian Communications Research Centre Canada, Communications Research Centre (CRC) during the late 1970s and supported by commercial enterprises led by Infomart in the early 1980s. Most work on the system ended after 1985, having failed to build critical mass. The CRC referred to Telidon as a "second generation" videotex system, offering improved performance, 2D colour graphics, multilingual support and a number of different interactivity options supported on various hardware. With additional features added by AT&T Corporation, and 16 other contributors in North America and supported by the Federal Government, Telidon was redefined as a protocol and became the NAPLPS standard. A number of Telidon systems were rolled out, including GRASSROOTS for the Province of Manitoba, SOI for Venezuela, Compuserve, LA Times in Californi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
NAPLPS
NAPLPS (North American Presentation Layer Protocol Syntax) is a Vector graphics markup language, graphics language for use originally with videotex and teletext services. NAPLPS was developed from the Telidon system developed in Canada, with a small number of additions from AT&T Corporation. The basics of NAPLPS were later used as the basis for several other Micro Computer Machines, microcomputer-based graphics systems. History The Canadian Communications Research Centre (CRC), based in Ottawa, had been working on various graphics systems since the late 1960s, much of it led by Herb Bown. Through the 1970s they turned their attention to building out a system of "picture description instructions", which encoded graphics commands as a text stream. Graphics were encoded as a series of instructions (graphics primitives) each represented by a single ASCII character. Graphic coordinates were encoded in multiple 6-bit strings of XY coordinate data, flagged to place them in the prin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Videotex
Videotex (or interactive videotex) was one of the earliest implementations of an end-user information system. From the late 1970s to early 2010s, it was used to deliver information (usually pages of text) to a user in computer-like format, typically to be displayed on a television or a dumb terminal. In a strict definition, videotex is any system that provides interactive content and displays it on a video monitor such as a television, typically using modems to send data in both directions. A close relative is teletext, which sends data in one direction only, typically encoded in a television signal. All such systems are occasionally referred to as ''viewdata''. Unlike the modern Internet, traditional videotex services were highly centralized. Videotex in its broader definition can be used to refer to any such service, including teletext, the Internet, bulletin board systems, online service providers, and even the arrival/departure displays at an airport. This usage is no longe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Communications Research Centre Canada
The Communications Research Centre Canada (CRC; ) is a Canadian government scientific laboratory for research and development in wireless technologies, with a particular focus on the efficient use of radio frequency spectrum. Its mission is as follows: * To perform wireless telecommunications research and development (R&D) that advances the efficient use of the radio spectrum, and serves as the government's leading source of scientific knowledge and technical advice for spectrum management, regulation and policy purposes; * To support critical wireless telecommunications operational requirements of Government of Canada departments and agencies, such as National Defence and Public Safety; * To take part in strategic R&D collaborations that leverage CRC's activities, resulting in knowledge and technology transfer that benefit Canadian industry, the economy and Canadians. History Officially established in 1969, the CRC's roots can be traced back to the late 1940s and the Canadian Def ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
NABTS
NABTS, the North American Broadcast Teletext Specification, is a protocol used for encoding NAPLPS-encoded teletext pages, as well as other types of digital data, within the vertical blanking interval (VBI) of an analog video signal. It is standardized under standard EIA-516, and has a rate of 15.6 kbit/s per line of video (with error correction). It was adopted into the international standard CCIR 653 (now ITU-R BT.653) of 1986 as CCIR Teletext System C. History NABTS was originally developed as a protocol by the Canadian Department of Communications, with their industry partner Norpak, for the Telidon system. Similar systems had been developed by the BBC in Europe for their Ceefax system, and were later standardized as the World System Teletext (WST, aka CCIR Teletext System B), but differences in European and North American television standards and the greater flexibility of the Telidon standard led to the creation of a new delivery mechanism that was tuned for spee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Personal Computer Museum
The Personal Computer Museum was located in Brantford, Ontario, Canada, in a building formerly owned by the municipal government. The building was built with bricks reclaimed from the Brantford Opera House. Over fifty interactive personal computers were on display, from a wide variety of manufacturers, including Apple, Atari, Commodore, IBM, Radio Shack, Timex, Mattel, and others. The museum also had a large library of original software and a huge archive of computer-related magazines. The museum's mandate was to preserve computer technology and, more importantly, to offer interactivity with older machines. It welcomed private tours from schools and other groups. It was open to students, to study the origins of computers and the various technologies involved. Parents were welcome to bring children, to see computers which the parents may have once used, to get a sense of the ancestry of today's technology. Admission was free. The museum first opened to the public in September, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Prodigy (online Service)
Prodigy Communications Corporation was an online service from 1984 to 2001 that offered its subscribers access to a broad range of networked services. It was one of the major internet service providers of the 1990s. The company claimed it was the first consumer online service, citing its graphical user interface and basic architecture as differentiation from CompuServe, which started in 1979 and used a command-line interface. Prodigy was described by the ''New York Times'' as "family-oriented" and one of "the Big Three information services" in 1994. By 1990, it was the second-largest online service provider with 465,000 subscribers, trailing only CompuServe's 600,000. In 1993 it was the largest. In 2001, it was acquired by SBC Communications, which in 2005 became the present iteration of AT&T. The Mexican branch of Prodigy, however, was acquired by Telmex. Early history The roots of Prodigy date to 1980 when broadcaster CBS and telecommunications firm AT&T Corporation formed a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Modem
The Democratic Movement (, ; MoDem ) is a centre to centre-right political party in France, whose main ideological trends are liberalism and Christian democracy, and that is characterised by a strong pro-Europeanist stance. MoDem was established by François Bayrou to succeed the Union for French Democracy (UDF) and contest the 2007 legislative election, after his strong showing in the 2007 presidential election. Initially named the Democratic Party (''Parti démocrate''), the party was renamed "Democratic Movement", because there was already a small Democratic Party in France. MoDem secured an agreement with La République En Marche! (LRM) — later Renaissance (RE) — in the 2017 legislative election after Bayrou had endorsed the candidacy of Emmanuel Macron in February. The two parties have since been in alliance, as of late named Ensemble. The party's founder and leader Bayrou has served as Prime Minister of France since December 2024. History Background MoDem tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Industry Canada
Innovation, Science and Economic Development Canada (ISED; ; )''Innovation, Science and Economic Development Canada'' is the applied title under the Federal Identity Program; the legal title is Department of Industry (). is a department of the Government of Canada. ISED is responsible for a number of the federal government's functions in regulating industry and commerce, promoting science and innovation, and supporting economic development. The department was known as Industry Canada (IC) prior to 2015. The department is led by the Minister of Industry (currently Mélanie Joly), who also serves as the Minister responsible for Canada Economic Development for Quebec Regions. Several other ministerial portfolios are associated with the department. While the minister is head of the department, and provides policy/political direction, the day-to-day operations of the department are managed by the deputy minister, who is a public servant. The department headquarters are located at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Minicomputer
A minicomputer, or colloquially mini, is a type of general-purpose computer mostly developed from the mid-1960s, built significantly smaller and sold at a much lower price than mainframe computers . By 21st century-standards however, a mini is an exceptionally large machine. Minicomputers in the traditional technical sense covered here are only small relative to generally even earlier and much bigger machines. The class formed a distinct group with its own software architectures and operating systems. Minis were designed for control, instrumentation, human interaction, and communication switching, as distinct from calculation and record keeping. Many were sold indirectly to original equipment manufacturers (OEMs) for final end-use application. During the two-decade lifetime of the minicomputer class (1965–1985), almost 100 minicomputer vendor companies formed. Only a half-dozen remained by the mid-1980s. When single-chip CPU microprocessors appeared in the 1970s, the defi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Acoustic Coupler
In telecommunications, an acoustic coupler is an interface device for coupling electrical signals by acoustical means—usually into and out of a telephone. The link is achieved through converting electric signals from the phone line to sound and reconverting sound to electric signals needed for the end terminal, such as a teletypewriter, and back, rather than through direct electrical connection. History and applications Prior to its breakup in 1984, Bell System's legal monopoly over telephony in the United States allowed the company to impose strict rules on how consumers could access their network. Customers were prohibited from connecting equipment not made or sold by Bell to the network. The same set-up was operative in nearly all countries, where the telephone companies were nationally owned. In many households, telephones were hard-wired to wall terminals before connectors like RJ11 and BS 6312 became standardized. The situation was similar in other countries. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Digital Cable
Digital cable is the distribution of cable television using digital data and video compression. The technology was first developed by General Instrument. By 2000, most cable companies offered digital features, eventually replacing their previous analog-based cable by the mid 2010s. During the late 2000s, broadcast television converted to the digital HDTV standard, which was incompatible with existing analog cable systems. In addition to providing high-definition video, digital cable systems provide more services such as pay-per-view programming, cable internet access and cable telephone services. Most digital cable signals are encrypted, which reduced the incidence of cable television piracy which occurred in analog systems. History In 1990, General Instrument (acquired by Motorola and now owned by ARRIS Group) demonstrated that it was possible to use digital compression to deliver high quality HDTV in a standard 6 MHz television channel. Using the same technology G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
