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Types of Encoders

7/11/2012 1:04:47 PM | by Anonymous

Encoders

The need for an encoder arises for several different reasons. Depending on the context that an encoder would be used in, the purpose and application of the encoder varies. An encoder can be a device, circuit, software program or even a person that aid in the conversion of information from one format to another for standardization, speed, security, secrecy, compatibility and saving space. In terms of technology, there are several different types of file formats that exist today that serve the purpose for different applications. Due to these different formats, one device may not be compatible with another, therefore encoders come into play. They help to convert the format to make the device or item compatible with another device. Listed below are encoders in different applications and how they work.

 

Media Encoders

In the case of media encoders, they exist as software that can be used for encoding audio, video and text into standardized formats.

 

- Compressors

In computer technology, data compression is important in several applications. Encoders are able to compress a document or image by using a lower resolution or bits as compared to the original document, while retaining crucial information. Compression can be advantageous as it helps to reduce the space a data file would occupy and also the capacity required by a device to be able to transmit that file. This makes these data files useable with other devices that do not support large files. These encoders work for audio, video and text files.

 

- Audio Encoders

Audio codecs are audio encoders that serve the function of coding, decoding, compressing or converting a digital audio data stream or signal. Audio codecs can be of two types depending on the context that they are used in. In software, an audio codec is actually a computer program that is able to compress or decompress an audio file according to its format. These encoders ensure that the audio file uses minimum bits whilst retaining its quality. Just like media encoders, these devices help to reduce the transmitting power required to transmit the audio files. However, in hardware, the term audio codec refers to a device that is able to encode audio into digital signals and decode them back to their original form. This way this device is able to transmit and receive audio signals.

 

- Email Encoders

These serve the role to of encoding email addresses in such a way that they are secured from email harvesters who would want to attain the email addresses of people and send spam mail.

 

Job Roles as Encoders

- Data Entry

This encoder job serves the purpose of coding information from surveys or other sources that an institution or organization can make use of for their business or research activities. Encoding such information makes it more easily readable.

 

- Translators

Translators can also be classified as encoders as they are able to encode information in one language into another for easy understanding between people who converse in different languages. Translators do not generally have to be people but can even be software that is designed to serve the purpose of a translator.

 

Security

Such encoders are used vastly for many different purposes. For example, in a shopping mall, the bar codes of products on sale can be encoded in the computer systems making them magnetically active, therefore if someone was to steal an item, the buzzers located at the doors of the retail outlet would start buzzing. Also such encoders assist in stock taking. Military messages can also be encoded into special codes that can only be understood by the person who has the necessary knowledge and tools to be able to understand them.

 

Conclusion

Encoders can not only be used in technological devices but their application is very vast. They help in the easy transmission of data, ensuring secrecy and security.

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