EPC Standards EPC System elements ： EPC Coding structure The reader/ tag Protocols Savant platform The Object Numbering Service (ONS) PML server

EPC Standards (cont.) UPC = Universal Product Code a unique code for every group of objects enables user such as supermarkets to identify every product two cans of Nestlé coffees have the same UPC

EPC Standards (cont.) EPC = Electronic Product Code next generation barcode coding scheme to electronically identify consumer goods vision: enable the automated, unique identification of tagged objects developed by EPCglobal (EAN, UCC) EPC consists of :UPC + serial number = 96 bits

EPC Infrastructure

EPC Infrastructure (cont.)

EPC Tag - 5 classes CLASSCharacteristicsNote CLASS 0, CLASS 0+ passive, read only,ID pre- assigned by tag vendors Class 0+ is writable Matrics provides Class 0 tags since 2003; CLASS 1 (Gen1, Gen2) passive, WORM, bits user memory Alien Technology provides Class 1 tags since 2003 CLASS 2 Passive, Read/Write capable tagworking samples on market CLASS 3 Semi-passive( with battery), R/W capable and longer read range,30m Auto ID Center has not completed the IC design CLASS 4 Semi-passive( with battery), Long range,100m+ several year to complete

ISO vs EPC ISO and EPC, both specify UHF frequencies ISO specifies Air Interface protocol without considering basic structures such as network technology and IT platforms etc. ISO and EPC Tags will be compatible in the long run. 。

Tags available UHF Tags – 860 to 960 MHzHF Tags – MHz EPC Class 0/0+ EPC Class 1 EPC Class 1 Gen 2 ISO U-Code 1.19 ISO ISO A ISO B ISO P3 EPC HF

Typical UHF tags EPC Class 1 IC Properties - 96 bit EPC R/W - UHF frequencies from 860MHz to 960MHz - Data transfer rate - To the tag 15 to 70 kbits/s - From the tag 30 to 140kbit/s - More than write/erase cycles - 40 year data retention - Kill command

Typical UHF tags (cont.) Philips U-Code EPC 1.19 IC Properties - Memory - Supports 64 bit and 96 bit EPC bit user memory - persistent ID flag - UHF frequencies from 860MHz to 960MHz - Data transfer rate - Reader to tag 40kbits/s - Tag to reader 40kbits/s to 160kbits/s - depending on the regulatory area and amount of tags in reader field

Class 1 Gen 2 vs Class 1 Gen 1