More about Encoders

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Encoders transform signal data into coded information for security, compression or transmission purposes. The signals converted by the encoder can be created by mechanical motions, analog transmissions, incoming digital information or a variety of other sources. In many cases, an encoder is used to translate analog signals into a digital format. Examples of this process, also known as digitizing, are digital recording studios, which use various pieces of equipment and software to process sound into easily processed digital code.

Encoders typically function using an algorithm, which is a complex series of mathematical formulas used to quantify input variables. The algorithm tells the encoding device how to interpret the incoming signal, which is then processed as an output signal that can be easily processed by a decoder or suitable receiver. In some cases, an encoder functions as a means of converting information from one digital format to another, such as the conversion of WAV files to MP3 format. In this function, the encoder translates an existing set of digital information into a different form so as to make it readable by a different type of decoder. However, encoders are often used to generate composite signals, thereby enabling large data sets to be transmitted at faster speeds. Properly encoded data also allows for easier storage, as well as a wide variety of data-editing functions.

Encoders also refer to linear and rotary encoders, which are electrical devices used to track position and speed. These types of encoders utilize sensors to monitor the position of a shaft or similar device, and provide an output of electrical pulses based on this position. Among the types of rotary encoders available are absolute, relative and single track. They are used for a wide variety of applications, including computer mice and trackballs, laser beam steering and robotics. The majority of encoding systems can be integrated into most existing software systems.