WO2006000548A1 - System und verfahren zur verlustfreien übertragung von fliesskommazahlen in xml - Google Patents
System und verfahren zur verlustfreien übertragung von fliesskommazahlen in xml Download PDFInfo
- Publication number
- WO2006000548A1 WO2006000548A1 PCT/EP2005/052863 EP2005052863W WO2006000548A1 WO 2006000548 A1 WO2006000548 A1 WO 2006000548A1 EP 2005052863 W EP2005052863 W EP 2005052863W WO 2006000548 A1 WO2006000548 A1 WO 2006000548A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- computer system
- floating
- binary value
- point
- xml
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/14—Conversion to or from non-weighted codes
- H03M7/24—Conversion to or from floating-point codes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/25—Integrating or interfacing systems involving database management systems
- G06F16/258—Data format conversion from or to a database
Definitions
- the invention relates to a system and method for converting or transmitting floating-point numbers.
- Such a system and method is used in particular in the field of automation technology, for example to transmit process data of a process automation system in XML, in particular via the Internet, to an operating and monitoring system and / or to a further automation system.
- the invention has for its object to provide a system or a method of the type mentioned, which avoids ein ⁇ times rounding error. Such rounding errors occur when converting numerical values from a decimal to a binary representation.
- FIG. 1 shows a system for converting floating point numbers into XML
- FIG. 2 shows a system for the transmission of floating-point numbers in XML.
- FIG. 1 shows a system for converting floating-point numbers into XML.
- the system shown in FIG. 1 consists of a first computer system 1, which can be connected to a system 2 via an Internet connection 8 implemented as an XML transfer 3.
- FPU Floating Point Unit
- FIG. 1 this is an automation system used in the field of automation technology.
- the computer system 1 can be designed for processing process and control data of an operating system which stores data, for example for an operating and monitoring system of the automation system.
- Fig. 2 shows a system for lossless transmission of floating point numbers in XML.
- the system shown in FIG. 2 comprises a first computer system 1, which can be connected to a system 2 via an Internet connection 8 implemented as an XML transfer 3.
- the second computer system comprises a conversion unit 7 for conversion
- the second computer system further comprises a second floating-point unit 4 for further processing of the second binary value 12 in the second computer system 2
- the system shown here is, for example, an automation system used in the field of automation technology.
- the computer system 1 can be configured to process process and control data of an operating system, while the second computer system forms, for example, an operating and monitoring system of the automation system.
- the special feature of the embodiment dar ⁇ provided in FIG 1 is that no decimal base is used for textual representation of the floating-point number for the data transfer from er Weg ⁇ from the 'first floating point unit th first binary value, but a floating point number 10, having a number basis, as Factors containing only the number 2, so for example, has a hexadecimal base.
- a rounding error in the transmission of, for example, process values and control values in the form of an XML data transmission is produced in a surprisingly simple manner. avoided.
- Data conversion carried out in the first conversion unit of the first computer system is reconverted back again in the second conversion unit 7 of the second computer system 2, so that at the output of the conversion unit in the form of the second binary value 12 a value without rounding errors for the further processing in the second Computer system 2 is available.
- OPC OLE for Process Control
- XML Due to its universal properties, XML is increasingly being used for communication purposes. Primarily SOAP and WebServices are mentioned here.
- OPC-XML OLE for Process Control
- OPC-XML floating-point numbers (double / float) are converted into text and transmitted as XML tags.
- the specification for this is defined in XML Schema Part II: Datatypes.
- the invention is based on the finding that in the conversion from the textual (decimal) representation into the binary representation due to mathematical laws, non-solvable rounding errors can occur. (Transformation of common fractions in the decimal system in the binary system can lead to periodic breaks, etc.)
- the proposed solution preserves the benefits of textual transmission while eliminating rounding issues.
- decimal number 0.2 1/5 gives in binary representation the periodic fraction: 0.1001
- the periodic is easily recognizable in the mantissa.
- decimal number 123.34 would be represented as normalized in exponential notation as follows: 1.2334 * 10 2
- the hexadecimal representation can be used in the same way as the decimal variant, but no rounding errors occur. Note: In the illustrated calculation, it was dispensed with the mantissa to adapt to a hexadecimal exponent. The binary exponent is still used. For the transmission tasks it is unimportant in which format the exponent is transmitted, but saves a conversion work. From the point of view, only a suitable conversion of binary into hexadecimal digits (and vice versa) takes place.
- a type of single in double precision and vice versa is immediately possible. (In contrast to the decimal system) Changing the precision of the floating point number (from double precision to single precision and vice versa) is much easier in the hexadecimal representation than in the decimal representation, since the hexadecimal digits are converted to their binary value can.
- the example uses the hexadecimal system as an example. However, the principle of the invention may refer to all suitable numerical bases, ie to all numerical bases which contain the 2 as the sole factor, such as 4, 8, 16, 32,....
- the invention thus relates to a system and method for loss-free transmission of floating point numbers in XML, which is used in particular in the field of automation technology, for example, process data of a process automation system in XML, in particular via Internet to an operator control and observation system and / or to another automation system etc. to transmit.
- process data of a process automation system in XML in particular via Internet to an operator control and observation system and / or to another automation system etc. to transmit.
- process data of a process automation system in XML in particular via Internet to an operator control and observation system and / or to another automation system etc. to transmit.
- a textual representation of a floating-point number there be no decimal basis, but in particular a hexadecimal number.
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Databases & Information Systems (AREA)
- Data Mining & Analysis (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Communication Control (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05758614A EP1759462A1 (de) | 2004-06-23 | 2005-06-21 | System und verfahren zur verlustfreien übertragung von fliesskommazahlen in xml |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004030384A DE102004030384A1 (de) | 2004-06-23 | 2004-06-23 | System und Verfahren zur verlustfreien Übertragung von Fließkommazahlen in XML |
DE102004030384.3 | 2004-06-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006000548A1 true WO2006000548A1 (de) | 2006-01-05 |
Family
ID=34971792
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/052863 WO2006000548A1 (de) | 2004-06-23 | 2005-06-21 | System und verfahren zur verlustfreien übertragung von fliesskommazahlen in xml |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1759462A1 (de) |
DE (1) | DE102004030384A1 (de) |
WO (1) | WO2006000548A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2040178A3 (de) * | 2007-09-20 | 2009-10-21 | Canon Kabushiki Kaisha | Dokumentenkodiervorrichtung, Dokumentenkodierverfahren und computerlesbares Speichermedium |
US8076087B2 (en) | 2002-11-14 | 2011-12-13 | Medical Research Fund of Tel Aviv Souraskv Medical Center | Galectin sequences and compositions and methods utilizing same for treating or diagnosing arthritis and other chronic inflammatory diseases |
CN104570788A (zh) * | 2013-10-09 | 2015-04-29 | 发那科株式会社 | 一种控制装置以及浮点小数点参数的变换方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5278978A (en) * | 1990-03-26 | 1994-01-11 | International Business Machines Corporation | Method and system for describing and exchanging data between heterogeneous database systems with data converted by the receiving database system |
US5191335A (en) * | 1990-11-13 | 1993-03-02 | International Business Machines Corporation | Method and apparatus for floating-point data conversion with anomaly handling facility |
DE10138533A1 (de) * | 2000-12-15 | 2002-07-11 | Siemens Ag | Bereitstellung von Projekt- und/oder Projektierungsdaten eines Automatisierungsprojekts in einem durch eine standardisierte Meta-Sprache, insbesondere XML, definiertem Format |
-
2004
- 2004-06-23 DE DE102004030384A patent/DE102004030384A1/de not_active Ceased
-
2005
- 2005-06-21 EP EP05758614A patent/EP1759462A1/de not_active Withdrawn
- 2005-06-21 WO PCT/EP2005/052863 patent/WO2006000548A1/de not_active Application Discontinuation
Non-Patent Citations (7)
Title |
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DAVE GILLESPIE: "The GNU Emacs Calculator / Radix Modes", SOFTWARE DOKUMENTATION, 15 December 1996 (1996-12-15), XP002339228 * |
HEINDL E ET AL: "WEBSERVICES IM DIENST DER AUTOMATISIERUNG PRAXISTAUGLICHES DESIGN VON WEBSERVICES MIT OPC XML", ELEKTRONIK, WEKA FACHZEITSCR.-VERLAG, MUNCHEN, DE, vol. 52, no. 10, 13 May 2003 (2003-05-13), pages 42 - 44,46,48, XP001160071, ISSN: 0013-5658 * |
LI ZHENG; NAKAGAWA, H.: "OPC (OLE for Process Control) Specification and its Developments", SICE 2002. PROCEEDINGS OF THE 41ST SICE ANNUAL CONFERENCE, vol. 2, 7 August 2002 (2002-08-07), XP002339230 * |
MILES J. MURDOCCA; VINCENT P. HEURING: "PRINCIPLES OF COMPUTER ARCHITECTURE, chapter 2", ONLINE BOOK, September 1999 (1999-09-01), XP002339231, Retrieved from the Internet <URL:http://mrkay.org/zenpc/ARCHMAN/chapter02.pdf> [retrieved on 20050804] * |
OPC FOUNDATION: "OPC XML-DA Specification Version 1.0", INTERNET ARTICLE, 12 July 2003 (2003-07-12), XP002339229, Retrieved from the Internet <URL:http://www.iconics.com/support/PDFs/OPC_Specs/OPC%20XMLDA%20Specification.pdf> [retrieved on 20050804] * |
See also references of EP1759462A1 * |
WORLD WIDE WEB CONSORTIUM: "XML Schema Part 2: Datatypes Second Edition", INTERNET ARTICLE, 18 March 2004 (2004-03-18), XP002339227, Retrieved from the Internet <URL:http://www.w3.org/TR/2004/PER-xmlschema-2-20040318/> [retrieved on 20050804] * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8076087B2 (en) | 2002-11-14 | 2011-12-13 | Medical Research Fund of Tel Aviv Souraskv Medical Center | Galectin sequences and compositions and methods utilizing same for treating or diagnosing arthritis and other chronic inflammatory diseases |
EP2040178A3 (de) * | 2007-09-20 | 2009-10-21 | Canon Kabushiki Kaisha | Dokumentenkodiervorrichtung, Dokumentenkodierverfahren und computerlesbares Speichermedium |
US8156088B2 (en) | 2007-09-20 | 2012-04-10 | Canon Kabushiki Kaisha | Document encoding apparatus, document encoding method, and computer-readable storage medium |
CN104570788A (zh) * | 2013-10-09 | 2015-04-29 | 发那科株式会社 | 一种控制装置以及浮点小数点参数的变换方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1759462A1 (de) | 2007-03-07 |
DE102004030384A1 (de) | 2006-01-19 |
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