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data-compression method

См. также в других словарях:

  • Data compression — Source coding redirects here. For the term in computer programming, see Source code. In computer science and information theory, data compression, source coding or bit rate reduction is the process of encoding information using fewer bits than… …   Wikipedia

  • data compression — Process of reducing the amount of data needed for storage or transmission of a given piece of information (text, graphics, video, sound, etc.), typically by use of encoding techniques. Data compression is characterized as either lossy or lossless …   Universalium

  • data compression —    Any method of encoding data so that it occupies less space than it did in its original form, thus allowing that data to be stored, backed up, retrieved, or transmitted more efficiently. Data compression is used in fax and many other forms of… …   Dictionary of networking

  • Lossless data compression — is a class of data compression algorithms that allows the exact original data to be reconstructed from the compressed data. The term lossless is in contrast to lossy data compression, which only allows an approximation of the original data to be… …   Wikipedia

  • Universal code (data compression) — In data compression, a universal code for integers is a prefix code that maps the positive integers onto binary codewords, with the additional property that whatever the true probability distribution on integers, as long as the distribution is… …   Wikipedia

  • Transparency (data compression) — In data compression or psychoacoustics, transparency is the ideal result of lossy data compression. If a lossily compressed result is perceptually indistinguishable from the uncompressed input, then the compression can be declared to be… …   Wikipedia

  • Data transmission — Data transmission, digital transmission, or digital communications is the physical transfer of data (a digital bit stream) over a point to point or point to multipoint communication channel. Examples of such channels are copper wires, optical… …   Wikipedia

  • Data Terminal Ready — Data Terminal Ready, abbreviated as DTR, is a control signal present inside an RS 232 serial communications cable that goes between a computer and another device, such as a modem. This is a one way high low signal going from the computer to the… …   Wikipedia

  • Data deduplication — In computing, data deduplication is a specialized data compression technique for eliminating coarse grained redundant data. The technique is used to improve storage utilization and can also be applied to network data transfers to reduce the… …   Wikipedia

  • Compression ratio — For compression ratio in data compression, see data compression ratio. The compression ratio of an internal combustion engine or external combustion engine is a value that represents the ratio of the volume of its combustion chamber from its… …   Wikipedia

  • lossless compression —    Any data compression method that compresses a file by rearranging or recoding the data that it contains in a more compact fashion. With lossless compression, no original data is lost when the file is decompressed. Lossless compression methods… …   Dictionary of networking

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