Digitization

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The following article is concerned with the digitization in the data processing. In the medicinethe term has the meaning in the sense of “administration thimble - of a preparation ". To technical applications of the digitization for the collection of physical objects information under Reverse engineering (digitize) is to find


the term of the digitization today is multilayered used:

  • On the one handdigitization is the transformation (coding) of information such as writing, picture, clay/tone into digital, thus countable, form. Generally the information is converted thereby into a binary code (z. B. Scanner).
  • Secondly becomes the term of the digitization forthe transformation similar physical dimension (elekt. Understood tension, brightness, pressure, magnetizing force etc.) into a discrete, digitally represented number (z. B.A/D transducer).
  • Thirdly also the transition from similar to is called to digital electronics in all areas of life digitization (see digital electronics).

This article concerns itself with the digitization in the sense of the first and second point.

Table of contents

reasons for the digitization

by transformation of information and/or. Signals into digital formcan be worked on and transported this more simply and more accurately. Also with long routes of transportation and after multiple treatment are errors and falsifications (z. B.Intoxication overlays) in the comparison to the similar processing small. The transformation of similar information into digital permits the use,Treatment, distribution, development and rendition in electronic systems such as Media ate management, electronic publication, document management, Workflow, electronic archiving or Enterprise content management.

historical development

the term of the digitization has historically more grownTerm and can be brought therefore today only heavily into a simple and clear definition. The historical development makes clear, why it came to the digitization.

A historically early digitization was the Morsen (starting from 1837). Text was changed , transferred into Morse code,and again back into text transforms. This functioned also with technically unfavorable conditions by light signal and sound signal (radio engineering, telephone, telegraphy). Later teleprinter followed (and. A. using the Baudot code), fax, E-Mail. The computertoday information processes almost exclusively in digital form.

transformation of information into digital form

digitization of text

a possible form of the digitization of text is z. B. the very much spread ASCII - code, with thateach latin letter by a consequence expressed by seven numbers, whereby the numbers may take only the value 0 and 1. Z. B. for the capital letter” A “the consequence 1000001 is written.

digitization of pictures

around inPicture to digitize, is divided the picture first into lines and columns (matrix). With a very simple raster diagram (only black or white pixels, no grey tones) then the value for pixel (element of this matrix) takes, z. B. 0for and 1 for black, on knows. The matrix is line by line picked out, whereby one receives a sequence of numbers from the numbers of 0 and 1, which the picture represents. In order to represent a Farbbild, one can each pixel z. B. a 16stellige or32stellige sequence of numbers from 0 and 1 assign (see the color models: RGB, CMYK).

digitization of clay/tone

see to transformation from similar signal to digital signal

digitization of pressure films

in large size scanners become the particularsColor excerpts of the pressure films in-scanned, joined and “entrastert”, thus the data again digitally for a CtP - exposure are present.

transformation of similar signals into digital signals

this kind of the transformation plays role during the data processing in the digitalElectronics.

In the closer sense the difference between similar and digital representation in the range of values lies. The digitization consists then only of the quantization, which the originally continuous range of values (z. B. any tension between 0 and 10 V) on one discrete quantity (z. B. Numbers between 0 and 255) illustrates.

During the digitization of similar signals - thus of time-dependent values - with quantization a scanning is always made at the same time. Thus worth and time-discrete signal develops. The technicalConversion takes place in many cases with analogue-digital converters. Dissolution and scanning rate determine (among other things), with which accuracy the similar of signal is digitally represented.

Digital signal processing is concerned with the digitization, digital processing and following” Zurückwandeln “from analog signals. An applicationis z. B. the treatment of music (digitization of audio signals).

social ones and economic consequences of digitization

long the final social changes by digitization are probably comparable at the earliest with the invention of the printing in the extent. A substantial characteristicdigital contents is a dramatic cost reduction. This concerns copyableness, reduced in price transport (e.g. in the Internet) like also production costs. While similar contents of similarly material goods have typically a rising cost process, are the costs of each further digital copy(Production neighbouring costs) after the production of the Orginalinhaltes close 0.

Produktionskosten klassischer Güter
Production costs of classical goods
Produktionskosten digitaler Güter
production costs of digital goods

the characteristic of simplified reproduction to different conflicts between creators and users of digital contents led. Industry and exploitation corporations react to the changed conditions alsoStrategies of artificial shortage, in particular with urherheberrechtlicher security of mental property and the technological implementation of copy protection.


The digitization opens besides completely new forms of telecommunications (for instance video conferences). Derived technologies usually are by Bidirektionalität (technical equalitycharacterized by transmitter and receiver). Some proponents of the technology derive from it the technical promotion of a democratization from mass communication .

see also:

binary, medium theory, digital television, Retrodigitalisierung, digital forgetting, scanning

 

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