EPC编码规范

Copyright © 2004 EPCglobal® , All Rights Reserved. Pag e 1 o f 78 EPCTM Tag Data Standards Version 1.1 Rev .1.24 Standard Specification 01 April 2004 Copyright © 2004 EPCglobal® , All Rights Reserved. Pag e 2 o f 78 DOCUMENT HISTORY Document Number: 1.1 Document Version: 1.24 Document Date : 2004-04-01 Document Summary Document Title: Tag Data Specification Owner: Tag Data Standard Work Group Chairperson: Steve Rehling, Procter & Gamble Status: (check one box) ? DRAFT X Approved Document Change History Date of Change Version Reason for Change Summary of Change 03-31-2004 1.24 Update errata Comments and errata identified during public review Copyright © 2004 EPCglobal® , All Rights Reserved. Page 3 of 78 Abstract This document defines the EPC Tag Data Standards. These standards define completely that portion of EPC tag data that is standardized, including how that data is encoded on the EPC tag itself (i.e. the EPC Tag Encodings), as well as how it is encoded for use in the information systems layers of the EPC Systems Network (i.e. the EPC URI or Uniform Resource Identifier Encodings). The EPC Tag Encodings include a Header field followed by one or more Value Fields. The Header field defines the overall length and format of the Values Fields. The Value Fields contain a unique EPC Identifier and optional Filter Value when the latter is judged to be important to encode on the tag itself. The EPC URI Encodings provide the means for applications software to process EPC Tag Encodings either literally (i.e. at the bit level) or at various levels of semantic abstraction that is independent of the tag variations. This document defines four categories of URI: 1. URIs for pure identities,...