This standard specifies a magnetic tape recording format that can transmit color image data between color electronic prepress processing systems produced by different manufacturers. GB/T 17156.4-1997 Printing technology Prepress data exchange Color image data on magnetic tape GB/T17156.4-1997 Standard download decompression password: www.bzxz.net
This standard specifies a magnetic tape recording format that can transmit color image data between color electronic prepress processing systems produced by different manufacturers.

GB/T 17156.41997
This standard is equivalent to IS107551992 Printing Technology Prepress Data Conversion
The equivalent conversion work follows the principles of integrity, limited scope and inheritance. Color image data on magnetic tape". This standard is formulated to specify the exchange format when exchanging color image data by magnetic tape between electronic prepress processing systems produced by different manufacturers, so that different devices can be connected or networked with each other: Appendix A of this standard is the appendix of the specification
This standard is proposed by the Press and Publication Administration of the People's Republic of China. This standard is under the jurisdiction of the National Printing Standardization Technical Committee. The drafting unit of this standard: China Printing Science and Technology Research Institute. This standard is mainly composed of: Du Qiding
GB/T17156.4--1997
ISO (formerly ISO) is a world-wide specialized standardization organization composed of national standardization groups (ISO member bodies): the work of formulating international standards is usually completed by the technical committee of ISO. If the member bodies are interested in the standards established by the technical committee, they have the right to participate in the work of the committee. International organizations (official or non-official) that maintain contact with ISO can also participate in the relevant work. In the field of electrotechnical standardization, ISO maintains a close cooperative relationship with the International Electrotechnical Commission (IEC). The international standard draft proposed by the technical committee is submitted to the member bodies for voting. The international standard needs to obtain the approval of at least 75% of the member bodies participating in the voting before it can be formally passed.
International Standard 1S010755 was developed by the American Standards Association (American Standards Association formerly known as A.V.I.T. 8.1-1988). It was adopted by the IS0/TC130 Printing Technical Committee using the fast-track method and was also approved by the ISO member body. ISO introduced
The technical content of this international standard is the same as that of the relevant national standard 118.11988: At the request of the 1989 TS0/TC130 plenary meeting, the ANSI text was distributed to ISO members for comments as a fast-track document. After comments were solicited, the text was adjusted according to the ISO/IECT work as part 3. T8.5 is the result of the joint efforts of an international industry organization including all the major prepress equipment manufacturers in the world. The industry organization was originally called the DDES (Digital Data Exchange Standards) Committee, and later became the founder of the ANSI IT8 (Image Technology) Standards Committee, which is responsible for the electronic data exchange standards in prepress. 1 Scope
National Standard of the People's Republic of China
Graphic technology
Prepress data exchange
Color image data on magnetic tape
Graphic technology-Prepress digital data exchange--Colour image data on magnetic tapeGB/T 17156. 4—1997
idl ISO 10755:1992
This standard specifies a magnetic tape recording format that can be used to transmit color image data between color electronic pre-processing systems produced by different manufacturers.
2 Conformance requirements
All ISO standards that meet the requirements of Chapters 6 to 8 shall be consistent with this standard, except for the special normative requirements of NonUEF and FEUEF. If NonUEF and ELEF are used, they shall be entered in the specified manner and can be read out optionally. 3 Reference Standards
The provisions contained in the following standards become non-standard provisions through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB1988-89 Information Processing Information Interchange Seven-bit Coded Character Set (EQV150646: 1983) GB7574-87 Magnetic Label and File Structure for Information Processing Interchange (EVIS01001: 1979) GB971688 Information Processing Information Interchange 9-track, 12.7mm (0.5im) unrecorded magnetic tape 32f1pmm (800[1pi) NRZ1126ftpmm (320uftpi) phase system and 356ftpmm (902ftpi) NRZ) (IDTIS01854: 1985)
GB 6550 86
Information Processing Interchange ! Track 12.7 mm1 width 63 lines/mm phase system recording tape (EQVJS0/IFC3788: 1976)
GB 9363-881
Information processing information interchange - 9-track, 12.7 mm (0.5 im) tape group encoding - 246 cprmm (6250 pi) format - reverse recording (eg IS05652:1984) 4 Definitions
This standard adopts the following definitions:
4.1 Digital Data Exchange Standard (DDEs) A method of digitally encoding information between cooperating systems. 4.2 User Exchange Format (UEF): Basic format that a system must implement to meet the requirements of this standard. 4.3 Extended User Exchange Format (ELEF): Optional format that a system can implement in addition to UEF. 4.4 User Exchange Format Non-UEF (Non-UEF): Approved by the State Administration of Technical Supervision on December 16, 1997 and implemented on August 1, 1998. GB/T 17156. 4—1997. This standard does not have a definition, but the format for the manufacturer's specific requirements is as follows: 4.5 Avoid decimal points Notation is in the form of a half-character string in the numeric field (positions 3/0 to 3/9 in GF1988), with an optional decimal point (position 2/14 in GB1988)
5 Symbols and abbreviations
The following symbols and abbreviations are used in this standard: BP: Byte position in the notation. In order to be consistent with GH7S74, the byte position starts at 】. I: Length of the field in byte counts:
Space or \b": Encodes the character at position 2/0 in B1988 0: In GB 1988. 6 General requirements
6.1 Basic capabilities
UEF version 00 is the most basic requirement for color image exchange. The image data to be exchanged under TEF00 consists of a matrix of pixels, each pixel is represented by a group of bytes corresponding to its color components: EF0 pixels contain four bytes, representing the four different colors (C), magenta (M), yellow (Y), and K). 6-2SOO tape
The beginning of volume 1 identifies the tape as II)FS (BP44-47) version 00 (1P50~51). After that, the tape should be written in the manner specified in this standard. Other values ​​are allowed in the UEF or ELEF fields. The only field that can be used for the purpose of description is the "system rate field (I All other fields shall be written in accordance with the provisions of this standard or GB7571:
The segments not defined in this standard shall be written in accordance with the provisions of CB7574 and GB9716 for media. [>IDES microstrip interface GB6550 shall be written with 1600bpi phase coding or GB9363 shall be written with 62.0bi group coding.
6.3ELEF format (Extended User Exchange Format) The use of the extended EUEF field and is avoidable. However, the codes specified in this standard shall be used. 6.4on-UEF (Non-UEF Exchange Format)
In DDES, the NonUEF field is also defined. The use restrictions of these segments and values ​​are opposite to those of the EUFF field. 6.5LEF, ELEF BP051 of the User Band Identifier (L:HL1) of the XoI UEF format is used as the JFF identifier. These fields shall be coded as described in 7.2.4. 6.6 Field Completion
Any numeric field shall be line-aligned and filled with "0\" and any field within shall be left-aligned and filled with "\spaces". 6.7 Use of User Band Identifier
The current L1 defines UHI.1, UHI.2, UHI3 and UHI4. In UHL2, 26 additional UHIs are reserved for future use: 8 are reserved for T)DFS to be used (13P31) and 9 are used for other future use (BP32).9 are reserved for manufacturer use (BP33). The value of DDESLTI (BPOI) is unique and ordered. The values ​​\\ to "9\ and \A\ and \B\ are reserved for DDES use: 6.8 Mixed tape formats
There can be different LEF magnetic book file formats on the same 1I)ES tape or a volume group. A DLES tape can contain FUEFNonEUEF file formats.
7DDESOO tape header identifier
The following clauses teach this [)FS how to use (G137574 tape format 7.1 General tape format
GB/T17156.4—1997
Table 1 shows two monochrome image files on a Table 2 shows the format of two monochrome image files on two tapes. This standard supports the grouping of files occupying multiple tapes, including scanning an image file onto multiple tapes. This is described in HDR1.
Table 1 Format of two image files on one tape BOT
Tape mark (begin of tape)
First identifier
Next file's file first identifier 1
Next file's file first identifier 2
F-File first identifier 1
Next file's user tape identifier 2
-User tape identifier 3
UHL2(BP31) --35) may specify additional UHIs, logical band marks
image data
edit band marks
file end mark
end mark
user telephone identification
user back mark
user rate mark
image file:
corresponds to each
UTI on the tape. These marks do not need to be read from the UTI register F)V2 and FOF, but can be determined by the UHL copy on the surface (see Section 8.) Remote tape marks
file mark of the next file
next file File identity 2
User tape identifier of the following file
User tape identifier of the following file 2
File exit identifier 3
Edit tape mark
Image data
Tape mark
File end identifier 1
File end identifier 2
Tape end identifier 1
User tape identifier 2
User tape identifier 3
Logical tape mark
Image file
Logical tape mark (logical tape end)
Physical tape mark (tape end)
GB/T 17156. 4-- 1997
Table 2 Format of two image files on two tapes The first tape
Physical tape label (tape end)
Volume header
File header of next file 1
File header of next file 2
User header of next file 1
User header of next file
User header of next file 3
Logical tape label
Final image data
Logical tape header
File end mark 1
File end mark 2
User mark 1
User end mark 2
User end mark 3
Tape mark
File selection 1
File start mark of next file segment 1
File start mark of text segment
User end mark of next file segment 1
User end mark of next file segment 1
User end mark of next file segment 2
User end mark of file segment 3
Set Sense of Life
Image Data
Image File 2 Part
Physical Magnetic Mark (End of Tape)
Logical Tape Mark
Reel Bundle Mark 1
Reel Bundle Mark
Use Tail Mark [
User Tape Mark 2
Use Tail Mark 3
Avoid Tape Mark
Logical Tape Play Mark (Logical Magnetic End:
7.2 Tape Head Mark
GB/T 17156.4—1997
End of Table 2)
First practice
Physical tape mark (begin of tape)
Volume header
Next file segment header
Next-file segment header 2
Next file segment header 1
Next file segment header 2
-File segment header 3| |tt||Logical Tape Label
Disk Image Data
Logical Magnetic Mark
End of File Mark 1
File End Mark
Useful Tape End Mark 1
Special Tape End Mark 2
Useful Tape End Mark 3
Logical Tape Label
Image File 2 Part 2
Logical Tape Label (Logical Magnetic Node)
Physical Tape Label! End of Tape!
The following sections define the beginning of volume marker for TDFSOOUFF03 tape. Except as defined here, there shall be no optional fields or formats in DIS0.
7.2.1 Volume Header 1 (V01.1)
Table 3 defines the byte position, field name, segment length, and content of Volume Header 1. The tape numbers in the same group are specified as BP 48~-49, and increase by 1 for each tape starting from \01\. Table Volume header identification 1V011
05~-10
12 --57
38--43
48~-49
33 -- 51
Identifier and serial number of the label
List identifier
Volume accessibility
Reserved for: CB 7374 recovery
School name
Date of establishment (GB 57 format)
Serial number of the tape in the volume group
ES version
Reserved for use in GB7574
Standard version identification
7.2.2 File segment identification 1 (HDR1)
Table 4 gives the byte position, field name, field length and content of the file header identification 1. 1
"UDES\
The contents of the file identifier (BP05-21), industry code (BP36--30) and version number (HP4041) can be different in different operating systems. These segments do not take into account the communication between manufacturers' systems. CB/1 17156. 4—1997
The file group identifier (BP22--27) does not include the job name of [DDES. The job name is included in the user first identifier 1 (see 6) When the date is not defined, the corresponding product segment uses a space followed by ten thousand zeros and six zeros (see BP48~53 in Table 1) 4 File identifier I (HDR1))
01~-04
05·21
22--27
36--39
+8 -~53
$1---73
Identifier and treatment
File identifier
Document group identifier
Document segment number
File sequence number
Generation number
Low generation version number
File date
File expiration date (optional)
Document accessibility
Obligation number
System guarantee (commercial use)
GB7 reserved
File header mark 2 (H[)R2)
Field name
Table 5 Specifies the location of the file header identifier 2 (FIDR2), the length and content of the field name, L
BP16～50 (system use/manufacturer use> is for each manufacturer to use, not for F) communication between vendor systems. Table 5 File header identifier 2 (IID) R2)
26～10
11 --15
51-:52
#3~-83
Identifier and sequence number "
Record format = fixed length
Block length (LEF fixed)
Record length (UFF fixed)
Reserved system position (! Nanjia H)
Buffer offset length
Reserved for GB7574
User Label Identification (HLI)
Field name
Table G specifies the section position, field name, field length and content of the user label identification 1: BP05~{O is the identifier of TIFF, there are the following, several cases\UEE l?
User exchange format for monochrome images
"FUFFOQ" · Extended UEF file
\bhhhoo\...
Non-UEF File
All other names should be reserved for DTES to use BP11~30. Use F to issue the name of the manufacturer of this band. Each manufacturer should use a dedicated name: Table 6 User Band Header Identifier 1 (UHI.1)
] -- 51
0: --10
1:~-30
11--60
61-- 80
Identifier Limin Number
L:EF Standard training
Manufacturer name
Job name
Image name
7.2.5 User header identifier 2 (UHL.2)
Segment name
Table 7 specifies the byte position, field name, field length and content of the user header identifier 2. 1
“HR\
\08192\
\08152\
\UHLI\
\LEFhGo\
CB/T 17156.4:1997
BP25～28 Specifies the type of file on the tape. Standard types:
0000"
Color image (LFF)
- Line image (reserved for other uses of THT)ES) - Geometric image (reserved for other uses of FS) \0003\~, \0099\
- Reserved for future use of DDES
This 0099" - For manufacturer use
BF31, BP32, and BP33 specify the number of UHI. on the tape, in order! First all DT)ESUIII., then all "other future use" LHL, and finally all manufacturers' UHI. This order has nothing to do with the identification number of each LHII. The numbers or letters in the identification number field (HP04) have no special meaning and are not in a specific order. (Except DDESUHL defined in 6.7) RP34~35 specifies the number of blocks before the first line of image data in the image file. Manufacturers can use this area for special H. The values ​​of BP36~80 are spaces before the beginning.
Table 7 uses broadband header 2 (L:HL2)
05--24
35--80
Standard product serial number
Department name
File type
Recognition system use (! (determined by the manufacturer)
Divided by the number of added>
H=1(U[IL3)
Other UH1, number H
Universal. Number (determined by the manufacturer)
Character name
To the beginning of the number (block number! Set) Reserved for 131)FS future use
7.2.6 User Band Header Identifier 3 (CHL3) (Parameter Area) Table 8 defines the byte position, field name, field length and content of the User Band Header Identifier 3, Table 8 User Band Header Identifier 3 (IJHI.3)
05 --6
09-- 12
[5-~3]
43~-52
55--64
75 --80
7. 2.6.1
Identifier number
Data format
Color separation number
Color word (first part)
Number of sections
Digit number (first part), always blank for TIFF, can be used for EUEF
0 Required byte value of halftone dots
00 Required byte value of halftone dots
Length (pixel line, decimal, mm) Area width (decimal, m)
Number of patterns per line (length)
Line width (width)
Direction (positive or negative)
Line division or rate unit (optional)
\\"Number of pixels per type, \M\... Effective width of pixels per meterResolution expressed in decimal points (optional)
\[\-Number of pixels per inch,\"2-pixel row resolution expressed in decimal points (optional)Width of pixels expressed in decimal points (long range)Data format
"UIIL2\
\0000\
\UHL3\
GB/T17156.4—1997
LEF method uses light to scan image data; directly scan by pixel and scan by line. Color scanning is a non-UFF format. These formats are specified in 13P05~06 of UH1.3: \OO\ Scan by picture (UEF)
"OI\ Scan by line (UEF)
"2\ Scan by color (reserved for other uses of 13)FS) In the two formats of scanning by picture or scanning by line, IIFF requires that it can be written in one format and read in both formats. a) Scan by pixel (UJFF): color pixels that change in line (4 colors in a group. In YMCK or CMYK order >Form a line of image. ·A series of such lines form an image of a certain width. UEF for pixel scanning requires that it can be written in one order, YMCK or CMYK, and can be read in both orders. For UFF and non-UEF, if the number of color separations and the number of lines to be imaged are odd, there will be a 10-byte at the end of each line. b) Scanning by line (UEF), one color line, another color line (one color line): LEF requires that the color sequence of line scanning is CMYK. If the number of pixels per line is odd, there will be an extra byte at the end of each line. c) Scanning by color (optional). After all the lines of one color, there are all the lines of the next color (n colors, 2 images). If the number of pixels in the next line is odd, there will be an extra byte at the end of the line. 7.2.6.2 Color sequence
The color sequence of LEF is "YMCK" or \CMYK\ by pixel scanning. The color sequence of LEH is \CMYK\ by line scanning. The color sequence is specified in BPOS-12 of UHI L3. In UEF, BP13~21 are always blank. In EUIEF, there is an optional function that can define 16 colors of various color sequences according to 13P07~24 of LTII.3. The valid input values ​​for the "Color Separation Number" field (RP07-08) are from 01 to 16, representing one to sixteen colors. The valid input for the "Color Order" field can be any of the following:
\Y""M"\C""K" Yellow, Magenta, Brown and Black inks: \R\\G\"B\
Red, Green, Blue attenuation;
\\\V\+i\
(IF1976 projection chromaticity LV and chromaticity (Y) + "1\ to \\\--user defined color and color separation, such as pink, etc.; "Q"--there is a · supply on the tape,
color descriptors need to be continuous, left-aligned and padded with spaces 7. 2. 6. 3 Color value
The byte representing the pixel color value in UFO9 is linearly related to the printing dot ratio. This word has no sign and can be any value between 0 and . The relationship between the color value and the color value (step difference, slope and intercept) is determined by the creator of the file, but all color separations in the same file must be the same. The byte value corresponding to 0% and 100% dots can be represented by a digital string (%1988) and filled in respectively [JIHL P228P2932 to define the conversion relationship of color values ​​in Figure 1. Here, the color value of a dot is 20 and the color value of 100 dots is 220. cn
Jin; can have a negative slope.
Post (0%-20)
《100%-220)
209255
Data value
Figure 1 Example of color value conversion
7.2.6.4 Image acquisition
GB/T 17156.4—1997
The length and width of the image are defined in 13P33~64 of UHL3. Figure 2 shows the relationship between these parameters and orientation BP65~6i6. The position and direction of the arrows indicate the first line of data in the file on the tape: the length refers to the length of the first line of data in the image file, and the width refers to the distance between the lines
Figure? The first line of data. The relationship between the image orientation and the UEF code UEF orientation is defined as follows (see Figure 2): \00\=horizontally loaded from the left corner (UEF) "01"=vertically loaded from the top corner (UEF) *02\=loaded from the bottom left (UEF)
"03"---loaded from the bottom corner vertically (UFF) EF requires that it can be written in at least one direction but can be read in all directions. The orientation of the UFF is defined as follows (according to the UEF) EF same method, Figure 2): -C4\- horizontal loading from the upper right corner (option' "05" vertical loading from the upper right corner (optional) "06"- horizontal loading from the lower right corner (optional) "07" vertical loading from the lower right corner (optional) "08" unknown (optional)
7.2.6.5 Resolution
1: HI.3 P6? ~ 80 is EUEF character dare to specify the resolution of both length and width, 8DI)ESOO 8.1 File end mark and volume end mark
The byte positions of file end mark "EOFn" and volume end mark "EUVn" are copied from BP05~-80 in the previous file header "II>Rn".
The data block count in the file part (full in IIDRI) should be correctly filled in BP5560 of F(>F1E)V1: 8.2 Use of end mark
In the tape format, each UFIL corresponds to an L:TI. It is not required to be marked. The end mark is immediately after ECF2 and EOV2. They should be copies of the corresponding UHL with HP01~03 converted from "TIIL" to "L:HL". GB/T 17156.41997
Appendix A
(Suggested Appendix)
Multiple-reel tapes and multiple-image file division and arrangement Figure A1 shows an example of four images: one tape. Note that GP7574 only allows one file group per reel. Image name
Fuji Mountain image file
Yamagi image file
House image filebzxz.net
Flower image file
County number
Sequence number
A1 Multiple-image word on multiple-reel tape
XYZ123
XY2123
XYZ123
XYZ123
XYZ123
XYZ128
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