Lexmark C752 Technical Reference page 82

Adaptive Compression
Adaptive compression allows the combined use of compression methods 0 through 3
(Uncoded, Run-Length Encoded, TIFF, and Delta Row). It also allows the printing of
empty rows (all zeros) or duplicate rows.
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Table 2-39: Adaptive Compression Control Strings
Scan Mode
0
1
2
3
4
5
254
255
Example:
ESC
ESC
ESC
ESC
The Transfer Raster Data command size includes all rows (scan lines).
Scan Mode and SizeH,L are three-byte primary control strings: CountH and
CountL.
CountH,CountL
Data sizeH,L
Data sizeH,L
Data sizeH,L
Data SizeH,L
NumberH,L of empty
rows
NumberH,L of duplicate
rows
Data SizeH,L
Data SizeH,L
2-70
Data
Uncoded raster scan data
Size of Run-length encoded data (high,low)
Size of Tagged Image File Format (TIFF) data
(high,low)
Size of Delta Row data (high,low)
None
None
TIFF word
TIFF double-word
|Move cursor to 1" x 5"
|Set the compression to Adaptive Compression
|Raster Data: 29 bytes follow
| Delta Row: 8 at 0: 'FFFFFFFFFFFFFFFFh'x
| Run Length: 1:'80'x, 6x'00'x, 1:'01'x
| Duplicate rows: 61 times
| TIFF: 8x'FF'x
|End graphics
PCL