OVERALL MACHINE INFORMATIONMay 29th, 1995
VIDEO DATA PATH
1.5. VIDEO DATA PATH
1.5.1. Transmission
Original
Contact Image Sensor
Assembly
Image Sensor
LED Array
FDU
Amplifier
FCE
VideoDIP
ProcessingFCIP
MemoryDCRMDMAmplifier
DATA/ADDRESS BUS
DRAM
LineAttenuator
ECM/
SAF ICBuffer
Card/FIFOSAF
MemoryMemory
HIC
NCU
DIP: Digital Image Processor
DCR: Data Compression & Reconstruction
MDM: Modem
To the network
H516V507.wmf
Immediate Transmission:
Scanned data form 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.
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