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This glossary of terms used in broadcasting is a list of definitions of terms and concepts related to both radio and television broadcasting, along with the industry in general. A ), a Japanese television and radio broadcaster., 7 ), regulator of broadcasting in Brazil., 1 B C ), a religious broadcasting service in South Korea., 2 D E F G H I , multi=yes J K , the trade association of commercial broadcasters in the Philippines. L M , "Hungarian Television"), a public television broadcaster in Hungary., 2 N ), the public broadcaster of Namibia., 4), the public broadcaster of Norway., 6 O P Q R S Technology used to broadca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Broadcasting
Broadcasting is the distribution of audio or video content to a dispersed audience via any electronic mass communications medium, but typically one using the electromagnetic spectrum ( radio waves), in a one-to-many model. Broadcasting began with AM radio, which came into popular use around 1920 with the spread of vacuum tube radio transmitters and receivers. Before this, all forms of electronic communication (early radio, telephone, and telegraph) were one-to-one, with the message intended for a single recipient. The term ''broadcasting'' evolved from its use as the agricultural method of sowing seeds in a field by casting them broadly about. It was later adopted for describing the widespread distribution of information by printed materials or by telegraph. Examples applying it to "one-to-many" radio transmissions of an individual station to multiple listeners appeared as early as 1898. Over the air broadcasting is usually associated with radio and television, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asahi Broadcasting Corporation
is a certified broadcasting holding company headquartered in Osaka, Japan. Until March 31, 2018, it was a unified radio and television broadcaster serving in the Kansai region. On April 1, 2018, its radio and television broadcasting divisions were spun off into two subsidiaries, with taking over the radio broadcasting business, and took over television broadcasting. History * March 15, 1951 - Asahi Broadcasting Corporation was founded in Nakanoshima, Kita-ku, Osaka. ABC started AM radio broadcasting on November 11 (1010 kHz). * May 25, 1955 - ABC and New Japan Broadcasting Company (NJB, the predecessor of Mainichi Broadcasting System, Inc.) founded in Dojima, Kita-ku, Osaka. Currently, ANA Crowne Plaza Hotel Osaka is located at the place the head office of OTV used to be. * December 1, 1956 - OTV started television broadcasting on channel 6, under the callsign JOBX-TV ''(not to be confused with Oita Asahi Broadcasting which currently uses the JOBX callsign)''. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quadrature Amplitude Modulation
Quadrature amplitude modulation (QAM) is the name of a family of digital modulation methods and a related family of analog modulation methods widely used in modern telecommunications to transmit information. It conveys two analog message signals, or two digital bit streams, by changing (''modulating'') the amplitudes of two carrier waves, using the amplitude-shift keying (ASK) digital modulation scheme or amplitude modulation (AM) analog modulation scheme. The two carrier waves are of the same frequency and are out of phase with each other by 90°, a condition known as orthogonality or quadrature. The transmitted signal is created by adding the two carrier waves together. At the receiver, the two waves can be coherently separated (demodulated) because of their orthogonality property. Another key property is that the modulations are low-frequency/low-bandwidth waveforms compared to the carrier frequency, which is known as the narrowband assumption. Phase modulation (analog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Independent Sideband
Independent sideband (ISB) is an AM single sideband mode which is used with some AM radio transmissions. Normally each sideband carries identical information, but ISB modulates two different input signals — one on the upper sideband, the other on the lower sideband. This is used in some kinds of AM stereo (sometimes known as the Kahn system). ISB is a compromise between double sideband (DSB) and single sideband (SSB) — the other is vestigial sideband (VSB). If the sidebands are out of phase with each other, then phase modulation (PM) of the carrier occurs. AM and PM together then create quadrature amplitude modulation (QAM). ISB may or may not have the carrier suppressed. Suppressed-carrier ISB was employed in point-to-point (usually overseas) radiotelephony and radioteletype Radioteletype (RTTY) is a telecommunications system consisting originally of two or more electromechanical teleprinters in different locations connected by radio rather than a wire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multiplexing
In telecommunications and computer networking, multiplexing (sometimes contracted to muxing) is a method by which multiple analog or digital signals are combined into one signal over a shared medium. The aim is to share a scarce resource - a physical transmission medium. For example, in telecommunications, several telephone calls may be carried using one wire. Multiplexing originated in telegraphy in the 1870s, and is now widely applied in communications. In telephony, George Owen Squier is credited with the development of telephone carrier multiplexing in 1910. The multiplexed signal is transmitted over a communication channel such as a cable. The multiplexing divides the capacity of the communication channel into several logical channels, one for each message signal or data stream to be transferred. A reverse process, known as demultiplexing, extracts the original channels on the receiver end. A device that performs the multiplexing is called a multiplexer (MUX), and a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircheck
In the radio industry, an aircheck is generally a demonstration recording, often intended to show off the talent of an announcer or programmer to a prospective employer, but mainly intended for legal archiving purposes. A ''scoped'' (short for "telescoped"—by analogy with pressing the ends of a hand-held telescope to reduce its size) aircheck usually contains only segments where the announcer is actually talking, along with a bit of the music or commercial on either side. In an ''unscoped'' aircheck, all programming is left intact and unedited, including music, commercials, newscasts, jingles and other on-air events. Another category of airchecks are those recorded "off-the-air" by listeners, using consumer or semi-professional equipment. These airchecks became more common with the advent of commercial cassette recorders. One of the oldest known surviving airchecks consists of a 15-minute broadcast by Bing Crosby on Los Angeles station KHJ and the CBS network from September 2, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Analog-to-digital Converter
In electronics, an analog-to-digital converter (ADC, A/D, or A-to-D) is a system that converts an analog signal, such as a sound picked up by a microphone or light entering a digital camera, into a digital signal. An ADC may also provide an isolated measurement such as an electronic device that converts an analog input voltage or current to a digital number representing the magnitude of the voltage or current. Typically the digital output is a two's complement binary number that is proportional to the input, but there are other possibilities. There are several ADC architectures. Due to the complexity and the need for precisely matched components, all but the most specialized ADCs are implemented as integrated circuits (ICs). These typically take the form of metal–oxide–semiconductor (MOS) mixed-signal integrated circuit chips that integrate both analog and digital circuits. A digital-to-analog converter (DAC) performs the reverse function; it converts a digital s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Data
Digital data, in information theory and information systems, is information represented as a string of discrete symbols each of which can take on one of only a finite number of values from some alphabet, such as letters or digits. An example is a text document, which consists of a string of alphanumeric characters . The most common form of digital data in modern information systems is '' binary data'', which is represented by a string of binary digits (bits) each of which can have one of two values, either 0 or 1. Digital data can be contrasted with ''analog data'', which is represented by a value from a continuous range of real numbers. Analog data is transmitted by an analog signal, which not only takes on continuous values, but can vary continuously with time, a continuous real-valued function of time. An example is the air pressure variation in a sound wave. The word ''digital'' comes from the same source as the words digit and ''digitus'' (the Latin word for '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Analog Signal
An analog signal or analogue signal (see spelling differences) is any continuous signal representing some other quantity, i.e., ''analogous'' to another quantity. For example, in an analog audio signal, the instantaneous signal voltage varies continuously with the pressure of the sound waves. In contrast, a digital signal represents the original time-varying quantity as a sampled sequence of quantized values which imposes some bandwidth and dynamic range constraints on the representation. The term ''analog signal'' usually refers to electrical signals; however, mechanical, pneumatic, hydraulic and other systems may also convey or be considered analog signals. Representation An analog signal uses some property of the medium to convey the signal's information. For example, an aneroid barometer uses rotary position as the signal to convey pressure information. In an electrical signal, the voltage, current, or frequency of the signal may be varied to represent the informatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Communications And Media Authority
The Australian Communications and Media Authority (ACMA) is an Australian government statutory authority within the Communications portfolio. ACMA was formed on 1 July 2005 with the merger of the Australian Broadcasting Authority and the Australian Communications Authority. ACMA is responsible for collecting broadcasting, radiocommunication and telecommunication taxes and regulating Australian media. It does this through various legislation, regulations, standards and codes of practice. ACMA is a converged regulator, created to oversee the convergence of telecommunications, broadcasting, radio communications and the internet. Organization ACMA is an independent government agency managed by an executive team comprising the Chair (who is also the Agency Head), Deputy Chair (who is also the chief executive officer). ACMA collects revenue on behalf of the Australian Government through broadcasting, radiocommunications and telecommunications taxes, charges and license fees. It a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ABS-CBN
ABS-CBN (an initialism of its two predecessors' names, Alto Broadcasting System and Chronicle Broadcasting Network) is a Philippine commercial broadcast network that serves as the flagship property of ABS-CBN Corporation, a company under Lopez Holdings Corporation owned by the López family. The network is headquartered at the ELJ Communications Center and ABS-CBN Broadcasting Center in Quezon City, with additional offices and production facilities in 25 major cities including Baguio, Naga, Bacolod, Iloilo, Cebu, Davao, and Bulacan, where ABS-CBN's production and post-production facility in Horizon IT Park is located. ABS-CBN is colloquially referred to as the ''Kapamilya'' Network; the branding was originally introduced in 1999 and was officially introduced in 2003 during the celebration of its 50th anniversary and was used until its May 5, 2020 shutdown when the network's branding changed to ''Kapamilya Forever'' in support for the network's franchise renewal on M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
