Em Microelectronic-marin Sa

Martin Jager

James J Springer

Tomas Hrdy

A method for providing identification and access with respect to a passive radio-frequency tag in a tag population, the passive tag being configured for receiving ACK commands including an identification parameter, the method including receiving an initiating command for identifying and accessing a tag, the initiating command including a slot number having a first value if a value in a slot counter of the tag is equal to the first value, then transitioning to an Open or a Secured state, otherwise transitioning to an Arbitrate state in a case where the tag has transitioned to the Arbitrate state, receiving a command for repeating a tag access request, referred to as repetition command, the command including a slot number having a second value, different from the first value, the second value being equal to the value in the slot counter of the tag, transitioning to the Open or Secured state, receiving an ACK command, ignoring the ACK command.

Method for providing identification and access with respect to a radio-frequency tag

A method for providing identification and access with respect to a passive radio-frequency tag in a tag population, the passive tag receiving ACK commands includes an identification parameter in the form of a 16-bit number. The method includes a step of receiving a command for initiating an inventory round or a command for initiating a tag access, generating a 16-bit value referred to as first or second binding handle, backscattering the first or second binding handle, receiving an ACK command, and analyzing the identification parameter of the ACK command, and in a case where the identification parameter includes the reader identifier then ignoring the ACK command.

Growing community of inventors

Praha Barrandov, Czechia

Martin Jager