
Satellite Modem Block Diagram
Satellite
Interface
Flash
CPU
RAM
Quadrature Data
from Tuner
RF In
MPEG
A/V
Video
Encoder
VIDEO
Ethernet / USB
System Interconnectivity,
Memory C ontroller,
Decryption
PCIAUDIO
Components: Tuner, A/D converters, QPSK
demodulator, Viterbi decoder, Reed-Solomon
FEC, processor interface. Single chip ASSPs
prov ided by Broadcom & Conex ant
32-bit RISC
processor, provided
by IDT, MIPS, ARM
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