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Direct Broadcast Satellite Communications: An MPEG Enabled Service by Donald C. Mead

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Chapter Thirteen. Intelligent Compression: MPEG 4

In Chapters 8 and 9 we discussed video and audio compression as they are utilized in today’s DBS Systems without a discussion of how such techniques could be improved in the future. In this chapter, we discuss the future directions of compression.

First, consider video. In the 1930s, when television was being developed, the only display device available was the Cathode Ray Tube (CRT). The drive electronics for x and y deflection created lines of video, as shown in Figure 8.1. Later, when digital video began to emerge, it was natural to sample the horizontal lines to form a rectangular array of numbers representing each frame of video. Video, thus, was represented as a temporal sequence of these ...

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