《ISO-ISP-11185-14-1995.pdf》由会员分享，可在线阅读，更多相关《ISO-ISP-11185-14-1995.pdf（18页珍藏版）》请在三一文库上搜索。
1、INTERNATIONAL STANDARDIZED PROFILE ISO/IEC ISP 11185-14 First edition 1995-07-I 5 Information technology - International Standardized Profiles FVTZnn - Virtual Terminal Basic Class - Register of control object type definitions - Part 14: FVT2112 - Printer Control Object Technologies de /information
2、- Profils normalis - European Workshop for Open Systems (E WOS); - OS/ Environment Implementors Workshop (OIW). This International Standardized Profile ISOllEC ISP 11185 forms an International Register of information objects in accordance with the procedures for the operation of OSI Regis- tration A
3、uthorities laid down in ISOllEC 9834. It is issued in parts, with additional parts being issued as further entries are added to the register. Each part is prepared in accordance with an approval and maintenance process laid down by the Special Group on Functional Standardization of ISOllEC JTCl , In
4、formation technology. ISO/IEC ISP 11185 is issued under the general title information technology- lntemational Standardized P refiles FVTZnn - Virtual Terminal Basic C/ass - Register of control object type definitions. At present the following parts are published or are in the course of preparation:
5、 - Part 1: FVT211, FVT212 - Sequenced and Unsequenced Application Control Objects - Part 2: FVT213, FVT214 - Sequenced and UnS8qU8nC8d Terminal Control Objects - Part 3: FVT215, FVT216 - Application RIO Record Loading Control Object, Terminal RIO Record Notification Control Object - Part 4: FVT217 -
6、 Horizontal Tabulation Control Object - Part 5: FW218 - Logical image Control Object - Part 6: FVT219 - Status MeSSage Control Object - Part 7: FVT2170 - Entry-Control Control Object - Part 8: Ffl22 1 - Forms FE /CO (field Entry instruction Control Object) No. 1 - Part 9: FVT222 - Paged FE/CO (Field
7、 Entry instruction Control Object) No. 1 - Part 10: FVT231 - Forms FEPCO (Field Entry Pilot Control Object) No. 1 - Part 11: FVT232 - Paged FEPCO (Field Entry Pilot Control Object) No. 1 - Part 12: FVl2116, FVT2117, FvT2118, FVT2119 - Generalized T8in8f Synch, Signal, Negotiation and Subnegotiation
8、Control Objects - Part 13: FVT2111 - Waiting Time Control Object - Part 14: FVT2112 - Printer Control Object - Part 15: FVT2113 - Field Definition Management Control Object - Part 16: FVT2114 - Terminal Signal Titles Control Object - Part 77: FVT2115 - He/p Text Control Object Annex A forms an integ
9、ral part of this part of ISO/IEC ISP 11185. Annex B is for information only. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:41:18 MDTNo reproduction or networking permitted w
10、ithout license from IHS -,-,- lSO/lEC ISP 11185-14 : 1995 (E) 0 ISOAEC Introduction This International Standardized Profile ISOllEC ISP 11185 is defined within the context of Functional Standardization, in accordance with the principles specified in ISO/IEC TR 10000, “Framework and Taxonomy of inter
11、national Standardized Pro- files”. The context of Functional Standardization is one part of the overall field of Information Technology (IT) standardization activities, covering base standards, profiles and registration mechanisms, The Open Systems Interconnection (OSI) Standard IS0 9040 for the Vir
12、tual Terminal Basic Class Service identified a requirement foran International Register of VTControl Object type definitions. Procedures for the operation of this International Register are laid down in ISOllEC 9834-5. This International Standardized Profile provides this register. The individual en
13、tries in this register constitute Interchange Format and Representation Profiles (F-Profiles) within the framework of ISO/IEC TR 10000. This part of ISO/IEC ISP 11185 was developed in close cooperation between the three Regional OSI Workshops, namely the OSI Implementors Workshop (OIW) of the United
14、 States, the European Workshop for Open Systems (EWOS) and the OSI Asia-Oceania Workshop (AOW). It was developed under the editorship of EWOS. The text is harmonized between these three Workshops and it has been ratified by the plenary assemblies of each Workshop. Copyright International Organizatio
15、n for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:41:18 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARDIZED PROFILE0 lsO/IEC lSO/lEC ISP 11185-14 : 1995(E) Informa
16、tion technology - International Standardized Profiles FVT2nn - Virtual Terminal Basic Class - Register of control object type definitions Part 14: FVT2112 - Printer Control Object 1 Scope 1 .l General The concept of Profiles for OSI, and the structure of the International Standardized Profiles that
17、document them, are defined in ISO/IEC TR 10000-l. Such Profilesare divided into a number of different classes and sub-classes. Two of these classes contain sub-classes comprising functions of the Vir- tual Terminal Basic Class Service and Protocol specified in the base standards IS0 9040 and IS0 904
18、1. These are the Application Profiles (A-Profiles) and the Interchange Format and Representation Profiles (F-Profiles). assignment types are thus information structures that require explicit reference within the VT protocol. Particular instances of these structures are fully defined within the base
19、standards, but the base standards also provide for further instances to be defined by registration. Each registered instance constitutes an F-Profile within the framework of ISO/IEC TR 10000. The Virtual Terminal Basic Class Service and Protocol may be used to realise a wide range of distinct functi
20、ons. Particular functions may be realised through the selection of appropriate VTfunctional units, F-Profiles and other VTE-profile argument values. The specification of the selection required to realise a particularfunction and to promote interoperabilityconstitutes a Virtual Terminal A-Profile wit
21、hin the framework of ISO/IEC The relationship between A-Profiles and F-Profiles is de- scribed in ISO/IEC TR 10000-1, subclause 7.3.2 and is as follows. Application Layer base standards require, implicitly or explicitly, the structure of information carried or referenced by them to be specified for
22、each instance of communication. It is the purpose of F-Profiles to specify such information structures. Particular functional requirements may then be met by the combination of an A-Profile with one or more F-Profiles. Establishment of a VT-association involves the selection by negotiation of a part
23、icular Virtual Terminal Environment profile (VTE-profile), and of particular values for any arguments of that VTE-profile. The VTE-profile specification, and possibly also the values of certain VTE-profile arguments, may in turn reference the definitions of VT control object types and assign- ment t
24、ypes. These VTE-profiles, control object types and TR 10000. The three International Registers of VT information structures and the specifications of VT Application Profiles are each published as a separate multi-part ISP as follows: - ISO/IEC ISP 11184 is the Register of VTE-profiles; - ISO/IEC ISP
25、 11185 is the Register of control object type definitions; - ISO/IEC ISP 11186 is the Register of assignment-type definitions; - ISO/IEC ISP 11187 contains the specifications of VT Application Profiles. This part of ISO/IEC ISP 11185 contains the type definitions of a control object that may be used
26、 to map regions of the display object exclusively on to a display surface such as a 1 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:41:18 MDTNo reproduction or networking pe
27、rmitted without license from IHS -,-,- lSO/lEC ISP 11185-l 4 : 1995(E) screen and a printing device and to control the operations of the printer 1.2 Position within the taxonomy The taxonomy of International Standardized Profiles for OSI is laid down in ISO/IEC TR 10000-2. Within the classification
28、scheme of this taxonomy, the OSI Profiles specified in this international Standardized Profile are in the Virtual Terminal Registered Object sub-class of the class of Interchange For- mat and Representation Profiles. A Profile within this subclass has a Profile identifier of the form FVTabc, where a
29、bc is a structured numerical identifier that identifies the position of the Profile within each of the three levels of subdivision of the subclass. The values of a and b are single digits but c is an integer that is not necessarily a single digit. In principle the IS0 Virtual Terminal model allows f
30、or multiple classes of operation, although at the time of publication of this International Standardized Profile only the Basic Class has been defined. The value of the identifier component a distin- guishes between distinct types of information object as fol- lows: - a = 1 for Basic Class VTE-profi
31、les; - a = 2 for Basic Class Control Objects; - a = 3 for Basic Class Assignment Types. Values of a greater than 3 are reserved for future develop- ments This International Standardized Profile ISO/IEC ISP 1118.5 contains the specifications of the Profiles with identifiers of the form FVT2bc. For th
32、is form of identifier, the component b distinguishes between the five major classifications of Basic Class Control Objects as follows: - b = 1 for Miscellaneous Control Objects; - b = 2 for Field Entry Instruction Control Objects; - b = 3 for Field Entry Pilot Control Objects; - b = 4 for Reference
33、Information Objects; - b = 5 for Termination Conditions Control Objects. Each of these classifications corresponds to a sub-register under the procedures of ISO/IEC 98345. The identifier com- ponent c is the serial number of the control object type in the appropriate sub-register. Values of b greate
34、r than 5 are reserved for new classifications of Basic Class Control Objects that may be defined in future amendments to IS0 9040. This part of ISO/IEC ISP 11185 contains the type definitions of the Basic Class Control Object with the Profile identifier FVT2112 - Printer CO. 1.3 Scenario The specifi
35、cation of the Virtual Terminal Service is given in IS0 9040. It is based on a model in which two VT-users communicate by means of a shared Conceptual Communica- tion Area (CCA) that is a conceptual pan of the VT service- provider. Information exchange is modelled by one VT-user 2 0 ISOAEC updating t
36、he content of the CCA and the changed state of the CCA then being made accessible to the peer VT-user. Control objects (COs) form one of the types of information object that may be present in the CCA. This is illustrated in figure 1, in which CO- 1, CO-2, . . . CO-n represent a number of different c
37、ontrol objects present in the CCA. The negotia- tion during establishment of a VT-association will determine whether or not these will include the control object whose specifications are given in this part of ISO/IEC ISP 11185. I I 1 VT-usw A I I VT sen/lce prImHives I I VT-user B - 1 I I VT servfcs
38、provfder Figure 1 - Control Objects in the VT Service Model The CCA is structured by the Virtual Terminal Service into a number of components. For a control object the Data Struc- ture Definition (DSD) component of the CCA contains the syntax of its information content, including the range of possi-
39、 ble values and the permitted update operations. The current value of its information content is contained in the Control, Signal and Status store (CSS) component. Updates to the current value take place through the issue of VT service primitives by one VT-user to the service-provider. Changes of st
40、ate of the CCA are made accessible through the issue of VT service primitives by the service-provider to the peer VT-user. By IS0 9040, clause 14, COs enable VT-users to handle control information related to virtual terminal functions and to real devices. This control is exercised by the VT-users th
41、rough semantics associated with the information content and with the update operations of the CO. Definition of the semantics, or specification of the source of the semantics if the semantic details are not fully prescribed, forms part of the registered definition of the CO. These semantics are not
42、however of concern to the VTservice-provider itself. The DSD will contain an ASN.l object identifier that identifies the regis- tered definition, but the VT service-provider merely acts as a repository of this value. It is only the VT-user that requires knowledge of the registered definition. NOTE 1
43、 - The VTE-parameter values that determine the syntax of the information content may not be negotiated explicitly during association establishment. Moreover, in the case of non-parametric COs these values do not determine the details of the syntax. Such values and details form part of the registered
44、 definition of the CO. Since the VT service- provider is not required to have knowledge of this registered definition, in principle the VT-users provide the VT service-provider with such information through local management procedures. Whether or not this is necessary in practice depends on the conf
45、iguration of the implementations concerned. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:41:18 MDTNo reproduction or networking permitted without license from IHS -,-,- 0 I
46、SOAEC ISO/IEC ISP 11185-14 : 1995(E) The control object defined in this part of ISO/IEC ISP 11185 assumes an asymmetry between the two communicating end systems. One end system is assumed to have a terminal role and to contain devices for the input and display of data and for signalling. These devic
47、es form part of the VT-usercomponent of that end system. The other end system isassumed to have an application rhle and to contain an application package that the terminal end system desires to access. This asymmetry may, but need not, be recognised by the VT Service; provision for such recognition
48、exists only in an S-mode VT-association. The control object defined in this part of ISO/IEC ISP 11185 is used to enable the application package to issue control signals to the devices of the terminal end system. Control objects of the types defined in this part of ISO/IEC ISP 11185 are used to enabl
49、e the terminal end system to issue signals to the application package without the need for the VT service-provider to be aware of the semantic significance placed on these signals by the application package. These signals are issued in response to the operation of an object updating device by the human user of the terminal end system. The Virtual Terminal Protocol specification given in IS0 9041-l models the VT ser