80 relations: Adi Shamir, Analog transmission, AT&T Corporation, Automatic gain control, Bell Labs, Cable converter box, Cable television, Clock recovery, Coaxial cable, Communications satellite, Conditional access, Cryptochannel, Cryptography, Determinism, Diffie–Hellman key exchange, Digital data, Digital television, Digital Video Broadcasting, Digitization, Encryption, Engineer, ETSI, Family Radio Service, Forward error correction, Frame (networking), Franklin D. Roosevelt, Frequency band, Germans, Intelsat, Interference (communication), Intermodulation, James H. Ellis, Leonard Adleman, Line code, Linear time-invariant theory, Linear-feedback shift register, Link layer, List of ITU-T V-series recommendations, Martin Hellman, Message, Microwave transmission, Modulation, Multiprotocol Encapsulation, Noise, One-time pad, Pay television, Phonograph, Physical layer, Pseudorandom binary sequence, Pseudorandomness, ..., Public switched telephone network, Public-key cryptography, Radio jamming, Random number generation, Random seed, Randomness, Read-only memory, Ron Rivest, RSA (cryptosystem), Satellite modem, Scanner (radio), Scrambler, Secure telephone, Secure voice, Security, Set-top box, SIGSALY, Sound recording and reproduction, Spectral density, Syncword, Telecommunication, Telephone, Television, Television encryption, Transfer function, Voice inversion, Whitfield Diffie, Winston Churchill, World War II, Z-transform. Expand index (30 more) »
Adi Shamir
Adi Shamir (עדי שמיר; born July 6, 1952) is an Israeli cryptographer.
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Analog transmission
Analog transmission is a transmission method of conveying information using a continuous signal which varies in amplitude, phase, or some other property in proportion to that information.
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AT&T Corporation
AT&T Corp., originally the American Telephone and Telegraph Company, is the subsidiary of AT&T that provides voice, video, data, and Internet telecommunications and professional services to businesses, consumers, and government agencies.
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Automatic gain control
Automatic gain control (AGC), also called automatic volume control (AVC), is a closed-loop feedback regulating circuit in an amplifier or chain of amplifiers, the purpose of which is to maintain a suitable signal amplitude at its output, despite variation of the signal amplitude at the input.
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Bell Labs
Nokia Bell Labs (formerly named AT&T Bell Laboratories, Bell Telephone Laboratories and Bell Labs) is an American research and scientific development company, owned by Finnish company Nokia.
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Cable converter box
A cable converter box or television converter box is an electronic tuning device that transposes/converts any of the available channels from a cable television service to an analog RF signal on a single channel, usually VHF or 4, or to a different output for digital televisions such as HDMI.
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Cable television
Cable television is a system of delivering television programming to paying subscribers via radio frequency (RF) signals transmitted through coaxial cables, or in more recent systems, light pulses through fiber-optic cables.
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Clock recovery
In serial communication of digital data, clock recovery is the process of extracting timing information from a serial data stream to allow the receiving circuit to decode the transmitted symbols.
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Coaxial cable
Cross-sectional view of a coaxial cable Coaxial cable, or coax (pronounced), is a type of electrical cable that has an inner conductor surrounded by a tubular insulating layer, surrounded by a tubular conducting shield.
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Communications satellite
A communications satellite is an artificial satellite that relays and amplifies radio telecommunications signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth.
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Conditional access
Conditional access (abbreviated CA) or conditional access system (abbreviated CAS) is the protection of content by requiring certain criteria to be met before granting access to the content.
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Cryptochannel
In telecommunication, a cryptochannel is a complete system of crypto-communications between two or more holders.
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Cryptography
Cryptography or cryptology (from κρυπτός|translit.
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Determinism
Determinism is the philosophical theory that all events, including moral choices, are completely determined by previously existing causes.
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Diffie–Hellman key exchange
Diffie–Hellman key exchange (DH)Synonyms of Diffie–Hellman key exchange include.
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Digital data
Digital data, in information theory and information systems, is the discrete, discontinuous representation of information or works.
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Digital television
Digital television (DTV) is the transmission of television signals, including the sound channel, using digital encoding, in contrast to the earlier television technology, analog television, in which the video and audio are carried by analog signals.
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Digital Video Broadcasting
Digital Video Broadcasting (DVB) is a set of internationally open standards for digital television.
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Digitization
Digitization, at WhatIs.com in Collins English Dictionary less commonly digitalization, is the process of converting information into a digital (i.e. computer-readable) format, in which the information is organized into bits.
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Encryption
In cryptography, encryption is the process of encoding a message or information in such a way that only authorized parties can access it and those who are not authorized cannot.
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Engineer
Engineers, as practitioners of engineering, are people who invent, design, analyze, build, and test machines, systems, structures and materials to fulfill objectives and requirements while considering the limitations imposed by practicality, regulation, safety, and cost.
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ETSI
The European Telecommunications Standards Institute (ETSI) is an independent, not-for-profit, standardization organization in the telecommunications industry (equipment makers and network operators) in Europe, headquartered in Sophia-Antipolis, France, with worldwide projection.
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Family Radio Service
The Family Radio Service (FRS) is an improved walkie-talkie radio system authorized in the United States since 1996.
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Forward error correction
In telecommunication, information theory, and coding theory, forward error correction (FEC) or channel coding is a technique used for controlling errors in data transmission over unreliable or noisy communication channels.
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Frame (networking)
A frame is a digital data transmission unit in computer networking and telecommunication.
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Franklin D. Roosevelt
Franklin Delano Roosevelt Sr. (January 30, 1882 – April 12, 1945), often referred to by his initials FDR, was an American statesman and political leader who served as the 32nd President of the United States from 1933 until his death in 1945.
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Frequency band
A frequency band is an interval in the frequency domain, delimited by a lower frequency and an upper frequency.
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Germans
Germans (Deutsche) are a Germanic ethnic group native to Central Europe, who share a common German ancestry, culture and history.
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Intelsat
Intelsat, S.A. is a communications satellite services provider.
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Interference (communication)
In communications and electronics, especially in telecommunications, interference is anything which modifies, or disrupts a signal as it travels along a channel between a source and a receiver.
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Intermodulation
Intermodulation (IM) or intermodulation distortion (IMD) is the amplitude modulation of signals containing two or more different frequencies, caused by nonlinearities in a system.
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James H. Ellis
James Henry Ellis (25 September 1924 – 25 November 1997) was a British engineer and cryptographer.
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Leonard Adleman
Leonard Adleman (born December 31, 1945) is an American computer scientist.
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Line code
Some signals are more prone to error than others when conveyed over a communication channel as the physics of the communication or storage medium constrains the repertoire of signals that can be used reliably.
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Linear time-invariant theory
Linear time-invariant theory, commonly known as LTI system theory, comes from applied mathematics and has direct applications in NMR spectroscopy, seismology, circuits, signal processing, control theory, and other technical areas.
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Linear-feedback shift register
In computing, a linear-feedback shift register (LFSR) is a shift register whose input bit is a linear function of its previous state.
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Link layer
In computer networking, the link layer is the lowest layer in the Internet Protocol Suite, the networking architecture of the Internet.
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List of ITU-T V-series recommendations
The ITU-T V-Series Recommendations on Data communication over the telephone network specify the protocols that govern approved modem communication standards and interfaces.
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Martin Hellman
Martin Edward Hellman (born October 2, 1945) is an American cryptologist, best known for his invention of public key cryptography in cooperation with Whitfield Diffie and Ralph Merkle.
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Message
A message is a discrete unit of communication intended by the source for consumption by some recipient or group of recipients.
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Microwave transmission
Microwave transmission is the transmission of information or energy by microwave radio waves.
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Modulation
In electronics and telecommunications, modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal, with a modulating signal that typically contains information to be transmitted.
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Multiprotocol Encapsulation
Multiprotocol Encapsulation, or MPE for short, is a Data link layer protocol defined by DVB which has been published as part of ETSI EN 301 192.
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Noise
Noise is unwanted sound judged to be unpleasant, loud or disruptive to hearing.
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One-time pad
In cryptography, the one-time pad (OTP) is an encryption technique that cannot be cracked, but requires the use of a one-time pre-shared key the same size as, or longer than, the message being sent.
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Pay television
Pay television, subscription television, premium television, or premium channels are subscription-based television services, usually provided by both analog and digital cable and satellite television, but also increasingly via digital terrestrial and internet television.
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Phonograph
The phonograph is a device for the mechanical recording and reproduction of sound.
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Physical layer
In the seven-layer OSI model of computer networking, the physical layer or layer 1 is the first and lowest layer.
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Pseudorandom binary sequence
A pseudorandom binary sequence (PRBS) is a binary sequence that, while generated with a deterministic algorithm, is difficult to predict and exhibits statistical behavior similar to a truly random sequence.
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Pseudorandomness
A pseudorandom process is a process that appears to be random but is not.
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Public switched telephone network
The public switched telephone network (PSTN) is the aggregate of the world's circuit-switched telephone networks that are operated by national, regional, or local telephony operators, providing infrastructure and services for public telecommunication.
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Public-key cryptography
Public-key cryptography, or asymmetric cryptography, is any cryptographic system that uses pairs of keys: public keys which may be disseminated widely, and private keys which are known only to the owner.
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Radio jamming
Radio jamming is the deliberate jamming, blocking or interference with authorized wireless communications.
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Random number generation
Random number generation is the generation of a sequence of numbers or symbols that cannot be reasonably predicted better than by a random chance, usually through a hardware random-number generator (RNG).
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Random seed
A random seed (or seed state, or just seed) is a number (or vector) used to initialize a pseudorandom number generator.
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Randomness
Randomness is the lack of pattern or predictability in events.
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Read-only memory
Read-only memory (ROM) is a type of non-volatile memory used in computers and other electronic devices.
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Ron Rivest
Ronald Linn Rivest (born May 6, 1947) is a cryptographer and an Institute Professor at MIT.
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RSA (cryptosystem)
RSA (Rivest–Shamir–Adleman) is one of the first public-key cryptosystems and is widely used for secure data transmission.
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Satellite modem
A satellite modem or satmodem is a modem used to establish data transfers using a communications satellite as a relay.
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Scanner (radio)
A scanner (also referred to a police scanner, police scanner radio or radio scanner) is a radio receiver that can automatically tune, or scan, two or more discrete frequencies, stopping when it finds a signal on one of them and then continuing to scan other frequencies when the initial transmission ceases.
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Scrambler
In telecommunications, a scrambler is a device that transposes or inverts signals or otherwise encodes a message at the sender's side to make the message unintelligible at a receiver not equipped with an appropriately set descrambling device.
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Secure telephone
A secure telephone is a telephone that provides voice security in the form of end-to-end encryption for the telephone call, and in some cases also the mutual authentication of the call parties, protecting them against a man-in-the-middle attack.
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Secure voice
Secure voice (alternatively secure speech or ciphony) is a term in cryptography for the encryption of voice communication over a range of communication types such as radio, telephone or IP.
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Security
Security is freedom from, or resilience against, potential harm (or other unwanted coercive change) from external forces.
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Set-top box
A set-top box (STB) or set-top unit (STU) (one type also colloquially known as a cable box) is an information appliance device that generally contains a TV-tuner input and displays output to a television set and an external source of signal, turning the source signal into content in a form that then be displayed on the television screen or other display device.
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SIGSALY
In cryptography, SIGSALY (also known as the X System, Project X, Ciphony I, and the Green Hornet) was a secure speech system used in World War II for the highest-level Allied communications.
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Sound recording and reproduction
Sound recording and reproduction is an electrical, mechanical, electronic, or digital inscription and re-creation of sound waves, such as spoken voice, singing, instrumental music, or sound effects.
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Spectral density
The power spectrum S_(f) of a time series x(t) describes the distribution of power into frequency components composing that signal.
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Syncword
In computer networks, a syncword, sync character, sync sequence or preamble is used to synchronize a data transmission by indicating the end of header information and the start of data.
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Telecommunication
Telecommunication is the transmission of signs, signals, messages, words, writings, images and sounds or information of any nature by wire, radio, optical or other electromagnetic systems.
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Telephone
A telephone, or phone, is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly.
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Television
Television (TV) is a telecommunication medium used for transmitting moving images in monochrome (black and white), or in colour, and in two or three dimensions and sound.
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Television encryption
Television encryption, often referred to as "scrambling", is encryption used to control access to pay television services, usually cable or satellite television services.
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Transfer function
In engineering, a transfer function (also known as system function or network function) of an electronic or control system component is a mathematical function giving the corresponding output value for each possible value of the input to the device.
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Voice inversion
Voice Inversion scrambling is an analog method of obscuring the content of a transmission.
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Whitfield Diffie
Bailey Whitfield 'Whit' Diffie (born June 5, 1944) is an American cryptographer and one of the pioneers of public-key cryptography along with Martin Hellman and Ralph Merkle.
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Winston Churchill
Sir Winston Leonard Spencer-Churchill (30 November 187424 January 1965) was a British politician, army officer, and writer, who was Prime Minister of the United Kingdom from 1940 to 1945 and again from 1951 to 1955.
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World War II
World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although conflicts reflecting the ideological clash between what would become the Allied and Axis blocs began earlier.
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Z-transform
In mathematics and signal processing, the Z-transform converts a discrete-time signal, which is a sequence of real or complex numbers, into a complex frequency domain representation.
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Additive scrambler, Descramble, Descrambler, Multiplicative scrambler, Randomizer, Scrambler (randomizer), Self-synchronizing scrambler, Synchronous scrambler, Telephone scrambler, Unscramble, Whitening sequences.
References
[1] https://en.wikipedia.org/wiki/Scrambler