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An encoder is a device used to change a signal (such as a bitstream) or data into a code. The code may serve any of a number of purposes such as compressing information for transmission or storage, encrypting or adding redundancies to the input code, or translating from one code to another. This is usually done by means of a programmed algorithm, especially if any part is digital, while most analog encoding is done with analog circuitry.

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Wikipedia about Encoder

An encoder is a device used to change a signal (such as a bitstream) or data into a code. The code may serve any of a number of purposes such as compressing information for transmission or storage, encrypting or adding redundancies to the input code, or translating from one code to another. This is usually done by means of a programmed algorithm, especially if any part is digital, while most analog encoding is done with analog circuitry.

Single bit 4 to 2 Encoder

An encoder has 2n input lines and n output lines.The output lines generate a binary code corresponding to the input value. For example a single bit 4 to 2 encoder takes in 4 bits and outputs 2 bits. It is assumed that there are only 4 types of input signals these are : 0001, 0010, 0100, 1000.

The encoder has the limitation that only one input can be active at any given time. If two inputs are simultaneously active, the output produces and undefined combination. To prevent this we make use of the priority encoder.

Priority encoder

A priority encoder is such that if two or more inputs is given at the same time, the input having the highest priority will take precedence. An example of a single bit 4 to 2 encoder is shown.

Connecting Priority Encoders

Priority encoders can be easily connected in arrays to make larger encoders, such as a 16 to 4 encoder made from six 4 to 2 priority encoders (four encoders having the signal source connected to their inputs, and two encoders that take the output of the first four as input).

Examples

  • A compressor encodes data (e.g., audio/video/images) into a smaller form.
  • A multiplexer combines multiple inputs into one output.
  • 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.

See also

  • Codec
  • Endec
  • Line code
  • Modulation
  • Redundancy in databases
  • decoder

External links

Search results for Encoder

Windows Media Encoder 9 Series FAQ

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Encoder - NexTag.com

Compare prices for deals on Encoder at NexTag.com. Find bargains on computers, electronics, software, and more.www.nextag.com/encoder/search-html

Encoder Products Company Full Rotary Product Line

Encoder Products Company is a leading manufacturer of incremental optical rotary encoders for shaft and hollow bore industrial applications.www.encoder.com/quickreference.html

Rotary encoder - Wikipedia, the free encyclopedia

1 Absolute rotary encoder. 1.1 Construction. 1.1.1 Mechanical Absolute Encoders ... For example, if the encoder were used in a robot arm, the controller would think ...en.wikipedia.org/wiki/Rotary_encoder

encoder: Definition from Answers.com

encoder ( en′kōdər ) ( computer science ) In character recognition, that class of printer which is usually designed for the specific purpose ofwww.answers.com/topic/encoder

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News about Encoder

Magnetic Encoder ICs suit motion control applications.

ThomasNetProviding start/play solution for motion control applications as they require no configuration or calibration by host controller after power up or during operation, Models AS5304 and AS5306 can achieve resolutions of 25 and 15 µm, respectively. Immune to dirt, dust, and grime contaminants to meet reliability challenges in harsh environments, linear Hall sensor ICs are available in 20-lead 5 x 5 ....http://news.thomasnet.com/fullstory/820447

Envivio To Enable Higher Definition Mobile TV With Extreme Compression For M2 Encoder

DigitalBroadcastingcomEnvivio Inc., recently announced that the performance of its award-winning 4Caster M2 mobile TV encoder is to be enhanced significantly with the addition of Extreme Compressionhttp://www.digitalbroadcasting.com/article.mvc/Envivio-To-En...

Adobe aims to stave off Silverlight with video encoder

InfoWorld Ratcheting up the battle for the rich media space, Adobe Systems later this year plans to offer Adobe Flash Media Encoding Server, which is software to move video content to Adobe's Flash format. Unveiled this week, the software makes it easier for users of Windows Media and other formats to make the conversion to the Adobe platform. This could be particularly beneficial as Adobe takes ...http://www.infoworld.com/cgi-bin/redirect?source=rss&url=htt...

Media Excel Releases HERA 4000; First Transcoder to Handle Two Simultaneous Real-Time HD Streams in Single Rack Unit

Broadcast NewsroomFirst HD Encoder/Transcoder Based on Texas Instruments DaVinci ?¢ Processor; Highest Density, Scalability in Industry Enables Chttp://www.broadcastnewsroom.com/articles/viewarticle.jsp?id...

ViewCast Introduces a High-Density, Eight-Channel Streaming Encoder; Ideal for Web-based Surveillance & Traffic ...

Broadcast NewsroomPLANO, Texas , Sept. 9 /PRNewswire-FirstCall/ -- ViewCast(R) Corporation (OTC Bulletin Board: VCST), a leading global provider of next-generation streaming media technology, today announced the launch of the Niagara(R) 8224 high-density analog media encoder.http://www.broadcastnewsroom.com/articles/viewarticle.jsp?id...

News about Encoder

Alternatives to 'beeps' and 'boops'

International Herald TribuneNext to Import Using, use the drop-down menu to select AIFF Encoder and click on the O.K. button. (You should change this setting back to AAC or MP3 the next time you rip a CD). In the main iTunes window, control- or right-click on the name of the ... http://www.iht.com/articles/2008/10/08/technology/PTHELP09.p...

City of St. Peters Expands SPTV Programming to AT&T�s U-Verse and ...

TMCnetBy implementing the company�s new simulstream encoder, Granicus® Outcast Encoder®, St Peters can webcast and broadcast on TV to the new digital network. With this technology, the city can increase accessibility, while decreasing the overall costs ... http://www.tmcnet.com/usubmit/-city-st-peters-expands-sptv-p...

Waytronx Signs Exclusive Licensing and Royalty Agreement With Japanese ...

EarthtimesAuthor : Waytronx, Inc. CUI, INC, Waytronx's wholly owned subsidiary, to distribute high-end C14 encoder worldwide TUALATIN, Ore., Oct. 7 TUALATIN, Ore. , Oct. 7 /PRNewswire-FirstCall/ -- Waytronx, Inc. (OTC Bulletin Board: WYNX), a leading provider ... http://www.earthtimes.org/articles/show/waytronx-signs-exclu...

CBS Broadcasts Democratic and Republican National Conventions in High ...

PR Newswire ... Calif., Oct. 6 /PRNewswire/ -- Fujitsu Computer Products of America, Inc., a leading supplier of innovative computer products and broadcast solutions, announced today that the Fujitsu IP-9500e was the exclusive broadcast contribution video encoder ... http://sev.prnewswire.com/multimedia-online-internet/2008100...

Netvue Installs Exterity IPTV At Sony BMG Music

Newswiretoday.comThe Netvue IPTV system streams live broadcast television channels from Freeview and Satellite using Exterity TVgateway and Pro-Encoder products, distributed across Sony BMG’s local area network. The channels are available for viewing on LCD ... http://www.newswiretoday.com/news/40980/

Search results for Encoder

Audacity: How do I download and install the LAME MP3 encoder?

How do I download and install the LAME MP3 encoder? Because of software patents, we cannot distribute MP3 encoding software ourselves. Follow these instructions to use the free ... http://audacity.sourceforge.net/help/faq?s=install&item=lame...

Seattle Robotics Society Encoder

Welcome to the Encoder. Welcome to the Encoder, the Newsletter of the Seattle Robotics Society.http://www.seattlerobotics.org/encoder/index.php

Encoder Products Company Full Rotary Product Line

Encoder Products Company is a leading manufacturer of incremental optical rotary encoders for shaft and hollow bore industrial applications.http://www.encoder.com/quickreference.html

Encoder Technology - Encoders, Incremental Encoders, Absolute Encoders ...

Encoder technology, Incremental Encoders, Absolute Encoders, Linear Encoders, Micro encoders, Optical encoders, Shaft encoders, Hollow shaft encoders, Modular encoders, Kit ... http://www.encoder-technology.com/

Encoder (Java 2 Platform SE v1.4.2)

public class Encoder extends Object. An Encoder is a class which can be used to create files or streams that encode the state of a collection of JavaBeans in terms of their public ... http://java.sun.com/j2se/1.4.2/docs/api/java/beans/Encoder.h...
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Vulgar Dislay - Flash Encoder

Vulgar Dislay - Flash EncoderThis version uses the Flash Video Encoder at 700 mbps. I had to cut off some of the beginning to get the file size under 100 mB. The last Flash encoded video I tried played good...Flash - Video

Mario Tests The New Adobe Media Enc...

Mario Tests The New Adobe Media Encoder 2We tested the new free Adobe Media Encoder 2 by using it to record a built in webcam on my HP Pavilion Laptop. Settings were 640x480 at 30fps with a (maximum) bitrate of 2500kps....Flash - Video

GOM Encoder - Get the Video in the ...

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Answers for Encoder

laila

What type of encoder do Microsoft XP users need to use to import music to the 1GB nano?

lailaDownload and install Apple's iTunes software from www.apple.com/itunes. The iPod will work with MP3s and AACs.
Q. Anthony

How do you broadcast a live radio session with Windows Media Encoder?

Q. Anthonyi don't think you can
bigbangsinan85

How can I implement turbo coding encoder and decoder using simulink?

bigbangsinan85
Jason Statham

From where can I download the best movies encoder?

Jason StathamK-Lite Codec Pack..... http://www.free-codecs.com/K_Lite_Codec_Pack_download.htm
clueless

can anyone post pictures how a rotary encoder incorporates with a display unit/pulse meter?

cluelessFor encoders you can use two methods. The first is to get a spring or spider coupling to connect the encoder to the shaft and then tighten the coupling on both ends. You might have to turn down your s...

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