Tutorial
Raster Graphics

Solution

  1. What bandwidth (measured in bytes per second) is required for feeding the DACs for a 1024x1024, 24 bit, 60 Hz colour display?

  2. How might one build a raster display system that does not use a framebuffer?

  3. The ability to quickly change colour-map entries is sometimes exploited for playing animations instead of changing the contents of the framebuffer. How could one animate a blue ball on a white background by using this type of colour-map animation?

  4. Suppose a standard NTSC television monitor has a resolution of 648x486 displayed at 30Hz, and that we wish to provide 24 bits of colour information for each pixel. How many seconds of uncompressed digital video of this type could fit on a 1 Gigabyte disk?

  5. How do LCD displays and active matrix displays work?

  6. In CRTs, how does one prevent the red electron gun from emitting electrons which strike the blue or green phosphors?