Internet Draft H.Ohtaka Expires: November 2007 J. Wus 14 May 2007 A Uniform Resource Name (URN) Namespace for Professional-Plug-in draft-ohtaka-urn-professional-plug-in-00.txt Status of this Memo By submitting this Internet-Draft, each author represents that any applicable patent or other IPR claims of which he or she is aware have been or will be disclosed, and any of which he or she becomes aware will be disclosed, in accordance with Section 6 of BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/1id-abstracts.txt. The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. This Internet-Draft will expire on November 14, 2007. Copyright Notice Copyright (C) The Internet Society (2007). All Rights Reserved. Abstract This document describes a Uniform Resource Name (URN) namespace for naming persistent resources as eXtensible Markup Language (XML) Schemas in Professional-Plug-in system. Ohtaka, et al. Expires November 14, 2007 [Page 1] Internet-Draft URN Namespace for Professional Plug-in May 2007 Table of Contents 1. Introduction...................................................2 2. Namespace Definition Template..................................2 2.1. Namespace ID:.............................................2 2.2. Registration Information:.................................2 2.3. Declared registrant of the namespace:.....................2 2.4. Declaration of structure:.................................3 2.5. Relevant ancillary documentation:.........................3 2.6. Identifier uniqueness considerations:.....................3 2.7. Identifier persistence considerations:....................3 2.8. Process of identifier assignment:.........................3 2.9. Process for identifier resolution:........................3 2.10. Rules for Lexical Equivalence:...........................3 2.11. Conformance with URN Syntax:.............................4 2.12. Validation mechanism:....................................4 2.13. Scope....................................................4 3. Formal Syntax..................................................4 4. Security Considerations........................................4 5. Namespace Considerations.......................................4 6. Community Considerations.......................................5 7. IANA Considerations............................................5 8. Normative References...........................................5 9. Author's Addresses.............................................5 10. Copyright Statement............................................5 11. Intellectual Property..........................................5 12. Acknowledgment.................................................5 1. Introduction Professional-Plug-in is a system which defines a solid-state storage media and a variety of multimedia contents stored on this storage media. The Professional-Plug-in is applicable for content acquisition systems, editing systems and servers as well as for transfer of content files. In order to assure interoperability among different vendors, specifications that define a video, audio essence and associated metadata have been established. The metadata contains information about the structure or parameters of the video, audio essences and also contains additional information describing the essences. The metadata is expressed with an XML specified by an XML schema. Therefore, a Uniform Resource Name (URN) specified in this document is applied to assign a persistent resource for the namespace to identify each XML schema. 2. Specification Template This namespace specification is for a formal namespace. 2.1 Namespace ID: "Professional-Plug-in" 2.2 Registration Information: Version: 1.0 Date: 14 May 2007 2.3 Declared registrant of the namespace: Name: Hideki Ohtaka Organization Matsushita Electric Industrial Co., Ltd. Address: 2-15 Matsuba-cho, Kadoma City, Osaka 571-8503, Japan Phone: +81-6-6905-4666 Email: ohtaka.hideki@jp.panasonic.com Ohtaka, et al. Expires November 14, 2007 [Page 2] Internet-Draft URN Namespace for Professional Plug-in May 2007 2.4 Declaration of structure: URN assigned for Professional-Plug-in has the following structure. URN:schemas-Professional-Plug-in:NSS The NSS shall comply with the following ABNF specification. NSS = SystemName ":" AssignedString ":" AssignedString ":" ---- SystemName = ALPHA / DIGIT / other AssignedString = ALPHA / DIGIT / other other = "-" / "_" / "." Note: Another character may not be the first character. 2.5 Relevant ancillary documentation: Extensible Markup Language (XML) 1.0 (Third Edition), W3C Recommendation 04 February 2004 Namespaces in XML, W3C Recommendation, 14,January 1999 SMPTE RP 2002 Content Specification on Solid-State Media Card - for DV/DV-based Essence : This document defines the XML schema specified by the namespace using the requested NID. 2.6 Identifier uniqueness considerations: Developers who wish to define a new system name under this proposed NID for their applications must ask the URN administrator (Matsushita Electric) to assign a system name as NSS. The URN administrator confirms that the new system name is unique against existing system names, and then assigns and registers the new system name as NSS. 2.7 Identifier persistence considerations: Persistence of identifiers is dependent upon the persistence of the system name assignment by the URN administrator. 2.8 Process of identifier assignment: Request for the assignment of a new system name including objectives of the request must be sent to the URN administrator and the URN administrator assigns the new system name as NSS. 2.9 Process of identifier resolution: The URN administrator will maintain an index of assigned URNs That index will map URNs to XML schema specifications in the Web page. 2.10 Rules for Lexical Equivalence: The entire URN is case-insensitive. Ohtaka, et al. Expires November 14, 2007 [Page 3] Internet-Draft URN Namespace for Professional Plug-in May 2007 2.11 Conformance with URN Syntax: No special considerations. URNs in this namespace conform to RFC 2141. 2.12 Validation mechanism: None specified. 2.13 Scope: Global The following is an example of the URN. 3. Examples URN:schemas-Professional-Plug-in:P2:ClipMetadata:v2.0 System name = P2: Specifies the system Assigned string = ClipMetadata: Specifies the type of metadata ClipMetadata means the Metadata schema related to a Clip Assigned string = v2.0: Specifies the version of this schema 4. Namespace Considerations 4.1 URN assignment procedures: Existing URNs are intended to be assigned as identifiers for particular applications or particular systems. The purpose of these URNs and its assignment procedure is clearly defined in each RFC document. Meanwhile, this requested URN is intended to be used for a namespace to identify an XML schema in Professional-Plug-in system so the metadata specified with an XML schema is closely associated with its individual system and applications. The existing URNs, however, do not provide any alternative namespaces which represent the metadata in the Professional-Plug-in system. Therefore, a new URN assignment is required and individual URNs shall be assigned through the process of development of each XML schema. 4.2 URN resolution/delegation: The resolution and delegation shall be determined through the process of development of an XML schema for metadata. 4.3 Type of resources to be identified: Types of resources to be identified include an XML schema for metadata. 5. Community Considerations 5.1 Open assignment and use of identifiers within the namespace: Professional-Plug-in system can be applicable for content acquisition systems, editing systems and so on. Therefore, any developers who wish to define an XML schema depending on each application can apply for a URN under the Professional-Plug-in namespace. The proposed URN shall be reviewed among developers of the Professional-Plug-in system, and shall be assigned and presented as a new URN under this namespace. Ohtaka, et al. Expires November 14, 2007 [Page 4] Internet-Draft URN Namespace for Professional Plug-in May 2007 6. Security Considerations There are no additional security considerations other than those normally associated with the use and resolution of URNs in general. 7. IANA Considerations The IANA has registered formal URN namespace XXXX, to Professional-Plug-in within the IANA registry of URN NIDs. 8. Normative References [RFC2141] Moats, R., "URN Syntax", RFC 2141, May 1997. 9. Author's Addresses Hideki Ohtaka Matsushita Electcic Industrial Co., Ltd. 2-15 Matsuba-cho, Kadoma City, Osaka 571-8503, Japan Phone: +81-6-6905-4666 Email: ohtaka.hideki@jp.panasonic.com John Wus Panasonic AVC Engineering Promotion Center of America 5000 Dearborn Circle Suite 100 Mount Laurel, New Jersey 08054 Email: john.wus@us.panasonic.com 10. Copyright Statement Copyright (C) The IETF Trust (2007). This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights. This document and the information contained herein are provided on an "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY, THE IETF TRUST AND THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. 11. 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The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights that may cover technology that may be required to implement this standard. Please address the information to the IETF at ietf-ipr@ietf.org. 12. Acknowledgment Funding for the RFC Editor function is provided by the IETF Administrative Support Activity (IASA). Ohtaka, et al. Expires November 14, 2007 [Page 5]