- 産業: Telecommunications
- Number of terms: 29235
- Number of blossaries: 0
- Company Profile:
ATIS is the leading technical planning and standards development organization committed to the rapid development of global, market-driven standards for the information, entertainment and communications industry.
A device that restores the dynamic range of a compressed signal to its original dynamic range.
Industry:Telecommunications
A device that translates frequencies from lower to higher frequencies.
Industry:Telecommunications
A device that transmits signals for the purpose of determining ionospheric conditions.
Industry:Telecommunications
A device that transposes or inverts signals or otherwise encodes a message at the transmitter to make the message unintelligible at a receiver not equipped with an appropriately set descrambling device. Note: Scramblers usually use a fixed algorithm or mechanism. However, a scrambler provides communications privacy that is inadequate for classified traffic.
Industry:Telecommunications
A device that uses a short optical transmission path to accomplish electrical isolation between elements of a circuit. Note 1: The optical path may be air or a dielectric waveguide. Note 2: The transmitting and receiving elements of an optical isolator may be contained within a single compact module, for mounting, e.g., on a circuit board. Synonym optoisolator.
Industry:Telecommunications
A device that uses a short optical transmission path to accomplish electrical isolation between elements of a circuit. Note 1: The optical path may be air or a dielectric waveguide. Note 2: The transmitting and receiving elements of an optical isolator may be contained within a single compact module, for mounting, e.g., on a circuit board. Synonym optoisolator.
Industry:Telecommunications
A device that usually consists of a speech analyzer, which converts analog speech waveforms into narrowband digital signals, and a speech synthesizer, which converts the digital signals into artificial speech sounds. Note 1: For COMSEC purposes, a vocoder may be used in conjunction with a key generator and a modulator-demodulator to transmit digitally encrypted speech signals over narrowband voice communications channels. These devices are used to reduce the bandwidth requirements for transmitting digitized speech signals. Note 2: Some analog vocoders move incoming signals from one portion of the spectrum to another portion.
Industry:Telecommunications
A device used for interfacing data terminal equipment (DTE) to the public telephone network. 2. A type of short-haul, synchronous-data line driver, usually installed at a user location, that connects user synchronous equipment over a 4-wire circuit at a preset transmission rate to a servicing central office. Note: This service can be for a point-to-point or multipoint operation in a digital data network.
Industry:Telecommunications
A device used for optical character recognition.
Industry:Telecommunications
A device used in crypto-equipment to change the order in which the contents of a shift register are used in various nonlinear combining circuits.
Industry:Telecommunications
