SATO D512, Руководство по программированию, Страница: 39 / 88

Unit 1: PCL Emulation
SATO D512 PCL Programming Manual Page 1-35
A
DAPTIVE
C
OMPRESSION
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.
• 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.
Example:
ESC
*p300x1500Y |Move cursor to 1" x 5"
ESC *b5M |Set the compression to Adaptive
Compression
ESC *b29W |Raster Data: 29 bytes follow
'03 0009'x 'E0FFFFFFFFFFFFFFFF'x |Delta Row: 8 at 0:
'FFFFFFFFFFFFFFFFh'x
'01 0006'x '0080 FB00 0001'x |Run Length: 1:'80'x, 6x'00'x, 1:'01'x
'05 0035'x |Duplicate rows: 61 times'02 0002'x
'F9FF 'x |TIFF: 8x'FF'x
ESC *rB |End graphics
Table 1-25: Adaptive Compression Control Strings
Scan Mode CountH,CountL Data
0 Data sizeH,L Uncoded raster scan data
1 Data sizeH,L Size of Run-length encoded data (high,low)
2 Data sizeH,L Size of Tagged Image File Format (TIFF) data (high,low)
3 Data SizeH,L Size of Delta Row data (high,low)
4 NumberH,L of empty rows None
5 NumberH,L of duplicate
rows None
254 Data SizeH,L TIFF word
255 Data SizeH,L TIFF double-word