July 2008
Intermediate to advanced
544 pages
16h 52m
English
Content preview from Computers as Components, 2nd Edition
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302 CHAPTER 6 Processes and Operating Systems
P1 P2
P3
P4
P5
P6
FIGURE 6.4
Data dependencies among processes.
System Video Audio
FIGURE 6.5
Communication among processes at different rates.
Nevertheless, communication among processes of different rates is very common.
Figure 6.5 illustrates the communication required among three elements of an
MPEG audio/video decoder. Data come into the decoder in the system format,
which multiplexes audio and video data. The system decoder process demulti-
plexes the audio and video data and distributes it to the appropriate processes.
Multirate communication is necessarily one way—for example, the system pro-
cess writes ...