Content Feature Schema for Internet Fax (V2)
RFC 2879
Document | Type |
RFC - Proposed Standard
(August 2000; No errata)
Obsoletes RFC 2531
|
|
---|---|---|---|
Authors | Lloyd McIntyre , Graham Klyne | ||
Last updated | 2013-03-02 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 2879 (Proposed Standard) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | (None) | ||
Send notices to | (None) |
Network Working Group G. Klyne Request for Comments: 2879 Content Technologies Obsoletes: 2531 L. McIntyre Category: Standards Track Xerox Corporation August 2000 Content Feature Schema for Internet Fax (V2) Status of this Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The Internet Society (2000). All Rights Reserved. Abstract This document defines a content media feature schema for Internet fax. It is a profile of the media feature registration mechanisms [1,2,3] for use in performing capability identification between extended Internet fax systems [5]. It replaces and updates the feature schema defined in RFC 2531. Table of Contents 1. Introduction .............................................2 1.1 Organization of this document ........................3 1.2 Terminology and document conventions .................3 1.3 Discussion of this document ..........................4 2. Fax feature schema syntax ................................4 3. Internet fax feature tags ................................4 3.1 Image size ...........................................5 3.2 Resolution ...........................................5 3.3 Media type ...........................................6 3.4 Paper Size ...........................................6 3.5 Color capability .....................................7 3.6 Color model ..........................................8 3.7 Image coding ........................................11 3.8 MRC mode ............................................12 4. Examples ................................................13 4.1 Simple mode Internet fax system ....................13 Klyne & McIntyre Standards Track [Page 1] RFC 2879 Content Feature Schema for Internet Fax (V2) August 2000 4.2 High-end black-and-white Internet fax system.........14 4.3 Grey-scale Internet fax system ......................14 4.4 Full-color Internet fax system (JPEG only) ..........15 4.5 Full-color Internet fax system (JPEG and JBIG) ......16 4.6 Full-color Internet fax system (MRC) ................17 4.7 Sender and receiver feature matching ................19 5. IANA Considerations .....................................21 6. Security Considerations .................................21 6.1 Capability descriptions and mechanisms ..............21 6.2 Specific threats ....................................21 7. Acknowledgements ........................................22 8. References ..............................................22 9. Authors' Addresses ......................................24 Appendix A: Feature registrations ..........................25 A.1 Image size ..........................................25 A.2 Resolution aspect ratio .............................27 A.3 Color levels ........................................28 A.4 Color space ........................................30 A.5 CIELAB color illuminant .............................33 A.6 CIELAB color depth ..................................35 A.7 CIELAB color gamut ..................................37 A.8 Image file structure ................................39 A.9 Image data coding ...................................41 A.10 Image coding constraint ............................43 A.11 JBIG stripe size .................................. 44 A.12 Image interleave ...................................46 A.13 Color subsampling ..................................47 A.14 MRC availability and mode ..........................49 A.15 MRC maximum stripe size ............................50 Appendix B: TIFF mode descriptions .........................52 Appendix C: Changes from RFC 2531 ..........................57 Full Copyright Statement ...................................58 1. Introduction This document defines a content media feature schema for Internet fax. It is a profile of the media feature registration mechanisms [1,2,3] for use in performing capability identification between extended Internet fax systems [5]. It replaces and updates the feature schema defined in RFC 2531. The media feature description mechanisms do not describe any specific mechanisms for communicating capability information, but do presumeShow full document text