Encoder: Difference between revisions

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'''Encoder''' may refer to: In this process, we represent the input data meaningfully, which helps someone else to interpret it.

An '''encoder''' converts information from one form to another for the purpose of standardization, speed or compression.

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===Electronic circuits===

==Examples==

* [[Audio encoder]], converts digital audio to analog audio signals

===Media===

* [[Video encoder]], converts digital video to analog video signals

* A [[data compression|compressor]] encodes data (e.g., audio/video/images) into a smaller form (see [[codec]])

* An [[audioSimple encoder]], convertsassigns digitala audiobinary code to analogan active audioinput signalsline

* A [[videoPriority encoder]], outputs a convertsbinary digitalcode videorepresenting tothe analoghighest-priority videoactive signalsinput

* An [[8b/10b encoding|8b/10b encoder]], creates DC balance on a communication transmission line

===Media= compression==

===Transducers===

* A [[data compression|compressorCompressor]], encodes data (e.g., audio/video/images) into a smaller form (see [[codec]])

Transducers (such as optical or magnetic encoders) sense position or orientation for use as a reference or active feedback to control position:

* A [[rotary encoder]] converts rotary position to an analog (e.g., analog quadrature) or digital (e.g., digital quadrature, 32-bit parallel, or USB) electronic signal.

* A [[linear encoder]] similarly converts linear position to an electronic signal.

Such encoders can be either absolute or incremental. The signal from an absolute encoder gives an unambiguous position within the travel range without requiring knowledge of any previous position. The signal from an [[incremental encoder]] is cyclical, thus ambiguous, and requires counting of cycles to maintain absolute position within the travel range. Both can provide the same accuracy; the absolute encoder is more robust to interruptions in transducer signal, whereas the incremental encoder reports position changes in real time.

== Sensors ==

===Electronic circuits===

* [[Encoder (position)]]

* A [[simple encoder]] assigns a binary code to an active input line.

** [[Rotary encoder]], converts rotary position to electronic signals

* [[Priority encoder]]s establish the priority of competing inputs (such as interrupt requests) by outputting a binary code representing the highest-priority active input.

* A* [[linearLinear encoder]] similarly, converts linear position to an electronic signal.signals

** [[Absolute encoder]], outputs the absolute position

** [[Incremental encoder]], converts position changes to electronic signals in real time

* [[Altitude encoder]]

==See also==

* [[Decoder (disambiguation)|Decoder]]

* [[CodecEncode (disambiguation)]]

* [[Line code]]

* [[Modulation]]

* [[Database normalization|Redundancy in databases]]

* [[Television encoding]]: [[NTSC]], [[PAL]] and [[SECAM]]

* [[Transcoding]]

{{disambiguation}}