Compression, Decompression, And Edit Processing Blocks; Flow Of Image Data; Flow Of Image Data For Copier Functions - Canon iR C3380 series Service Manual

Chapter 4

4.5.4 Compression, Decompression, and Edit Processing Blocks

/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
The main controller PCB processes data for compression, decompression, and editing.

4.6 Flow of Image Data

4.6.1 Flow of Image Data for Copier Functions

/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
The following shows the flow of image data when a copier function is being used:
4-10
Reader unit
Main controller PCB
(main + sub)
PDL input
IC1
PC
DDR-SDRAM
DC controller PCB
DDR-SDRAM
RGB 24
JPEG
compression
JPEG
Resolution conversion
decompression
Magnification processing
Rotation
JPEG
Binary processing
compression
JPEG decompression
HDD
F-4-10
Reader unit
Main controller PCB
(main) + (sub R-A) +
(sub PE-A)
RGB 24 Image signal
JPEG Magnification
decompression
JPEG Rotation
compression
Color conversion
F-4-11
4 Image area signal
Color conversion
HDD
0013-9218
0013-9219