0
example of raster scane disply
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
Is raster scan displays same as bit-mapped displays?
raster scan display -based on television technology.where as random scan display based on hard copy devices.raster scan display cannot directly pass electron beam through the scan line..but random scan directed the beam toward the scan line.
What are the relative advantages and disadvantages of random scan and raster scan display system?
Raster-scan system:-1)raster displays have less resolutio. 2)the lines producced are ziz-zag as the plotted values are discrete.3)high degree realism is achived in picture with the aid of advanced shading and hidden surface technique.4)decreasing memory costs have made raster systems popular.Random scan system:-1)random displays have high resolutions since the picture definition is stored as a set of line drawing commands and not as a set of intensity values. 2)smooth lines are produced as the electron beam directly follows the line path.3)realism is difficult to achieve.4)random-scan system's are generally costlier.
Where in use random scan?
plen plotter is most example of random scan display
Compare the merits and demerits of raster and random scanning system?
Raster-scan system:-1)raster displays have less resolution.2)the lines produced are ziz-zag as the plotted values are discrete.3)high degree realism is achived in picture with the aid of advanced shading and hidden surface technique.4)decreasing memory costs have made raster systems popular.5)In this case, the electron beam is swept across the screen, one row at a time from top to bottom.6)Picture definition is stored in a memory area called the refresh buffer/frame buffer.7)Refreshing on raster scan displays is carried out at the rate of 60 to 80 frames/second. Random scan system:-1)random displays have high resolutions since the picture definition is stored as a set of line drawing commands and not as a set of intensity values.2)smooth lines are produced as the electron beam directly follows the line path.3)realism is difficult to achieve.4)random-scan system's are generally costlier.5)Here CRT has the electron beam directly only to the parts of the screen where a picture is to be drawn.6)Picture definition is stored as a set of line drawing commands in an area of memory referred to as refresh display file.7)Random scan systems are designed to draw all the component lines of a picture 30 to 60 times each second.
What are the applications of raster scan graphics?
Application of Raster scan display: Basically it is used in Plotters. and mainly more like....Printers,,,,
What is the use of display file in random scan system?
Display File is a memory area which stores picture definition as a set of line drawing commands.Video controller interprets these commands and produces actual image on the screen.Display File in random scan system is comparable to frame buffer in raster scan system, on the basis of their functions.
How are picture stores in calligraphic and raster refresh display devices?
computer graphics
What is a raster scan display device with example?
The Raster scan system is a scanning technique in which the electrons sweep from top to bottom and from left to right. The intensity is turned on or off to light and unlight the pixel. The beam is swept back and forth from the left to the right across the screen. When the beam is moved from the left to the right, it is ON. The beam is OFF, when it is moved from the right to the left. When the beam reaches the bottom of the screen, it is made OFF and rapidly retraced back to the top left to start again. A display produced in this way is called raster scan display.
What's difference between random and raster?
Raster graphics is a way of storing graphical information (see related link). Random refers to a complete lack of order or relationships between values or events. Small random disturbances in acoustics is referred to as noise. See related link.
What is rasterization?
Rasterisation is the progressive scanning of an image in a line by line fashion. TV and computer displays are scanned left to right line by line and so are raster displays. Vectorisation or vector graphics are the opposite of rasterisation. In this method of display the image is drawn in a point to point method. An oscilloscope is an example of a vector display. Raster graphics have the advantage of having the same refresh rate all the time irrespective of the complexity and colour depth of the image drawn (this is not the same as the framerate). All home computers now use a raster display output. Vector graphics can be coloured but are line drawings only. Examples of this type of colour vector display is the 1980's game Starwars or the monochrome Vectrex games consol from the same period.
How does a digital printer work?
Digital printing begins with creation of the document file ‰ÛÒ the words and images that will print on the page. Regardless of what program is used to create the file or any of its components, the file is converted into a raster graphics image. A raster is a grid of x and y coordinates on a display space; a raster image file identifies which of those coordinates to illuminate. A raster image file is sometimes referred to as a bit map because it contains information that is directly mapped to the display grid. BMP, TIFF, GIF and JPEG are all examples of raster image file types. The action of converting a file to a raster image file is known as raster image processing or RIPping.
Which display device is suited for cad system a a crt with vector referesh monitor b crt with raster scan monitor c plasma panel display d led display?
a
