Saturday, August 31, 2013

Introduction To Computer Graphic Display Systems

By Gloria Mason


In the field of computing, computer graphics are quite wonderful systems. They are used in diverse areas such as results displays of scientific and engineering visualizations and computations, production of feature films and television commercials, analysis and simulation of real world problems as well as computer aided design. The graphics are also used in graphical user interfaces capable of increasing the bandwidth of communication between machines and humans. The art of picture creation using a computer has many applications, hence it is important to look at the intrinsics of computer graphic display systems.

The introduction of CRTs brought about a significant evolution in the field of computing. People no longer have to depend on cryptic commands or awkward and time consuming punching cards. Computer graphics happen to be application-oriented. Ivan Sutherlands Sketchpad was the first application that made it possible for users to draw on screens. Despite it seeming trivial, it is a significant breakthrough in the graphical field and has shown to everyone that computers can be used interactively in the production of graphical output on a CRT.

Later on, the arrival of paint systems made the essential communication between humans and computers somewhat more pictorial. Others are Word Processing, desktop publishing, business graphics like analytical charts as well as other displays of information, that present the message in a forceful and emphatic manner.

Computer aided designed followed suit, which allowed easy and speedy design of mechanical systems, buildings, electronic circuit boards or floor plans, and simulation of real world problems in a way that provides major savings and a safe learning environment. Computer games also arrived, significantly producing to the popularity of computer graphic systems.

Raging from three dimensional rendering to image warping, modern graphic display controllers (GCDs) and their capabilities are appealing to the eye due to their numerous applications. High-end controllers assist in defining the value and style of products with dynamic graphics for impressing consumers. On the other hand, modest controllers show information clearly and simply, giving users what they need with little fuss.

Whether just functional or totally dazzling, graphical systems decorate top designs in really amazing ways, hence they deserve rapt attention. When creating desirable designs, one step to go through is to choose a GCD that supports the goals of a certain application with the adequate functionality at a price point that is desirable. There are three categories of a top GCD: basic, mid and high levels.

There are a number of factors that determine the architecture of embedded graphics, with cost pressure being one of them. The automobile industry is a good example of an application area that is cost sensitive, where minimizing the bill of materials is one of the main priorities. In basic and mid level applications, this need can be addressed by designers through the use of system-on-a-chip graphic controllers as a real single-chip solution. Such GCDs are capable of communicating with each other through the CAN bus and in order to preserve battery power, they can go into shutdown modes of power.

Some internal capacity limitations in VRAM and inbuilt system bottlenecks however, can limit the functionality level of graphic display systems together with their maximum size of display.




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