Contactless (Proximity) Smartcards

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This is a presentation, which lists technical facts about two different types of air interface for contactless proximity smartcards. Similar type of interfaces are used for RFID tag reader communication. This presentation highlights some of the features of Type A and Type B communication to bring out the differences between each of them.

Business Technology

Contactless Proximity Technology Type A Vs Type B Anshuman Sinha 1/1/2005 Anshuman Sinha <anshuman.sinha2@gmail.com>

Contactless Prox imity Smartcard s ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],08/22/11 Anshuman Sinha <anshuman.sinha2@gmail.com>

Proximity Smartcard ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],08/22/11 Anshuman Sinha <anshuman.sinha2@gmail.com>

Type A - Interface ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],08/22/11 Anshuman Sinha <anshuman.sinha2@gmail.com>

Type A - Anticollision ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],08/22/11 Anshuman Sinha <anshuman.sinha2@gmail.com>

Type A - Anticollision ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],08/22/11 Anshuman Sinha <anshuman.sinha2@gmail.com>

Type A - Coding ,[object Object],[object Object],08/22/11 Anshuman Sinha <anshuman.sinha2@gmail.com> 0 1 1 0

Type B - Interface ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],08/22/11 Anshuman Sinha <anshuman.sinha2@gmail.com>

Type B - Anti-collision ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],08/22/11 Anshuman Sinha <anshuman.sinha2@gmail.com>

Slotted Aloha [Method 1] ,[object Object],[object Object],[object Object],[object Object],08/22/11 Anshuman Sinha <anshuman.sinha2@gmail.com> Offered Traffic Throughput 1

Slotted Aloha [Method 1] ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],08/22/11 Anshuman Sinha <anshuman.sinha2@gmail.com>

Probabilistic [Method 2] ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],08/22/11 Anshuman Sinha <anshuman.sinha2@gmail.com>

Type B Coding ,[object Object],08/22/11 Anshuman Sinha <anshuman.sinha2@gmail.com> 1 0 NRZ-L: [Non-Return-to-Zero-Level]: In NRZ-L encoding, the polarity of the signal changes only when the incoming signal changes from a one to a zero or from a zero to a one. NRZ-L method looks just like the NRZ method, except for the first input one data bit. This is because NRZ does not consider the first data bit to be a polarity change, where NRZ-L does.

References ,[object Object],[object Object],[object Object],[object Object],08/22/11 Anshuman Sinha <anshuman.sinha2@gmail.com>

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