MPEG decoder

MPEG decoder.
Once the MPEG datastream has been decrypted (if necessary), this IC converts the raw MPEG data into video and audio.
This IC also takes on the functions of a "graphics accelerator" (in the 'PC' sense, with 2D and 3D rendering possible) allowing the microprocessor to build up complicated on-screen displays which are perfectly overlaid onto the video.
Other facilities include rendering a display and inserting a scaled version of the video stream (used within BBCi and extensively within Sky News Active).

 


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Copyright © 2005 Richard Murray