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OVERALL MACHINE INFORMATION
VIDEO DATA PATH
1.5. VIDEO DATA PATH
1.5.1. Transmission *
SAF IC
Card
DIP: Digital Image Processor
DCR: Data Compression & Reconstruction
MDM: Modem
Immediate Transmission:
Scanned data from the contact image sensor passes to the DIP block in the
FCIP. After analog/digital video processing, the DCR block compresses the
data for transmission. The compressed data then passes either to the FIFO
memory or to the ECM memory before it is sent to the telephone line through
the modem.
Memory Transmission:
First, the scanned data is stored in the SAF memory after compression in the
DCR block.
At the time for transmission, the DCR block decompresses the data from the
SAF memory, then compresses it again after handshaking with the other ter-
minal is done. The compressed data then passes either to the FIFO memory
or to the ECM memory, before it is sent to the telephone line through the
modem.
Original
Contact Image Sensor
Assembly
LED Array
Amplifier
DIP
Video
FCIP
Processing
Memory
DCR
DATA/ADDRESS BUS
DRAM
Line
ECM/
Buffer
SAF
/FIFO
Memory
Memory
1-16
Image Sensor
FDU
FCE
Amp
E144EFL
MDM
Modem
Attenuator
HIC
NCU
To the network
August 2nd, 1995
H516V507.wmf
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