Explanation Of Bi-Level Image Data (Bid) Section; Explanation And Parameters For Each Symbol Used In Bid - Canon MultiPASS C530 Service Manual

MultiPASS C530/C560 Chapter 2: Technical Reference

8.2.7 Explanation of bi-level image data (BID) section

BID is as shown in the construction figure below, and consists only of the number of stripes.
BID is constructed by the connection of the floating marker code and the section which includes the
actual image data encoded with JBIG image compression encoding, called SDE (Stripe Data Entity).
Floating marker code
ESC Marker code
1byte
RESERVE
NEWLEN
ATMOVE
COMMENT

8.2.8 Explanation and parameters for each symbol used in BID

a) Floating marker code section
The floating marker code is set at the head of the stripe data entity (SDE).
In order to distinguish the encoding and the floating marker code, it is imperative that ESC (escape
code: 0xFF) be set at the head.
The following marker code and parameters are in the floating marker code.
The 0x of each marker code shows that the following integers are hexadecimal.
ABORT (Abort: 0x05)
Encoding interruption. Only the abort code can be made to appear anywhere.
ESC 0x05
ATMOVE (AT move: 0x06)
Designates from which line the movement of the AT pixel starts, and where it wil move to.
ESC 0x06 yAT:Movement-starting line Tx:Movement Position(X) Ty:Movement Position (Y)
Stripe
BID (Bi-level Image Data)
Parameter
1byte 1byte
ABORT
YD
4bytes
yAT Tx
4bytes 1byte
Lc
4bytes
Figure 2-42 BID Construction Diagram
--------- BID (Bi-level Image Data)
SDE (Stripe Data Entity) Floating marker code
PSCD ESC SDNORM/SDRST
Variable
1byte 1byte
Image data ESC STUFF
Variable 1byte
Ty
1byte
2-62
Stripe
SDE
1byte