Frame Stores

Video Signal must be digitised.

A device known as a frame storeor frame grabber usually performs this task. It:

• Digitises the incoming video signal
  
• Samples signal into discrete pixels at appropriate intervals -- line by line.
  
• Samples signal into a (8 bit) digital value.
  
• Stores sample frame own memory.
  
• Frame easily transferred to computer memory or a file.