GS1 EPC Tag Data Standard 1.6 - Indicod-Ecr

29722973297429752976297729782979298029812982298329842985298629872988298929902991299229932994299529962997299829993000300130023003300430053006300730084. Apply the decoding procedure of Section 15.2.4 to decode control fields.5. Extract N bits beginning at bit 20 h and consider them to be an unsigned integer V.Construct a string consisting of the letter “x” followed by V as a (N/4)-digithexadecimal numeral (using digits and uppercase letters only).6. Construct a string consisting of “urn:epc:raw:”, followed by the result fromStep 4 (if not empty), followed by N as a decimal numeral without leading zeros,followed by a period (“.”), followed by the result from Step 3 (if not empty),followed by the result from Step 5. This is the final EPC Raw URI.15.2.2 Gen 2 EPC Memory Bank into EPC Tag URIThis procedure decodes the contents of a Gen 2 EPC Memory bank into an EPC Tag URIbeginning with urn:epc:tag: if the memory contains a valid EPC, or into an EPCRaw URI beginning urn:epc:raw: otherwise.Given: The contents of the EPC Memory Bank of a Gen 2 tagProcedure:1. Extract the length bits, bits 10 h – 14 h . Consider these bits to be an unsigned integer L.2. Calculate N = 16L.3. Extract N bits beginning at bit 20 h . Apply the decoding procedure of Section 14.4,passing the N bits as the input to that procedure.4. If the decoding procedure of Section 14.4 fails, continue with the decoding procedureof Section 15.2.1 to compute an EPC Raw URI. Otherwise, the decoding procedureof of Section 14.4 yielded an EPC Tag URI beginning urn:epc:tag:. Continueto the next step.5. Apply the decoding procedure of Section 15.2.4 to decode control fields.6. Insert the result from Section 15.2.4 (including any trailing colon) into the EPC TagURI obtained in Step 4, immediately following the urn:epc:tag: prefix. (IfSection 15.2.4 yielded an empty string, this result is identical to what was obtained inStep 4.) The result is the final EPC Tag URI.15.2.3 Gen 2 EPC Memory Bank into Pure Identity EPC URIThis procedure decodes the contents of a Gen 2 EPC Memory bank into a Pure IdentityEPC URI beginning with urn:epc:id: if the memory contains a valid EPC, or into anEPC Raw URI beginning urn:epc:raw: otherwise.Given: The contents of the EPC Memory Bank of a Gen 2 tagProcedure:1. Apply the decoding procedure of Section 15.2.2 to obtain either an EPC Tag URI oran EPC Raw URI. If an EPC Raw URI is obtained, this is the final result.Copyright ©2005- 2011 GS1 AISBL, All Rights Reserved. Page 115 of 218