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EM Microelectronic, trend-setter in fashion industry

26 Jan '08
3 min read

The simplicity of EM's UHF products lies also in IP-X, a Tag-Talks-Only (TTO) protocol co-developed with IPICO and powered by a non-modulated reader which allows a very efficient use of the UHF frequency band especially in dense reader environments.

Meanwhile, the importance of the deployed base of IP-X tags and the growing market interest for these products pushed EM Microelectronic and IPICO to propose an improved version of the protocol (IP X Gen 2), which will guaranty the harmonization with existing Reader-Talks-First (RTF) UHF RFID Air Interfaces.

This harmonization proposal is based on a Tag-Only-Talks-After-Listening (TOTAL) concept. TOTAL ensures the tag to remain silent during the RTF communication to prevent any interference, thus avoiding the collision of the TTO and RTF worlds.

Today, the EM4X22 is a read-only product with a factory programmed code and it can therefore be considered as a Class 0 product according to EPCglobal's definition. But EM is already working on harmonized IP-X Gen 2 products.

Factory pre-programmed, read-only chips have not only the advantage of simplicity: they are also intrinsically more secure than their programmable counterpart from a counterfeighting point of view. Moreover, a simple incremental numbering scheme of the chips also has the advantage of a higher level of privacy protection because the number alone will not allow drawing any conclusion on the nature of the tagged item.

EM Microelectronic

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