Em Microelectronic-marin Sa

Bruce Carl Wall

Daniel Arthur Staver

Tue Tran

Dean Allum

The present invention relates to a radio-frequency identification tag () and a related method of operation, whereby the tag comprises an antenna () being adapted to draw a voltage from an externally applied RF field having a first frequency, and further comprises a tunable antenna resonant circuit () comprising a default resonance frequency and having tuning means () for shifting the resonance frequency to the first frequency, whereby non-volatile storage means () for storing frequency related data are provided, that are accessible at a reduced voltage level, which is below a 'power-up' voltage level of the tag's operating unit ().

Circuit and method for power-up optimization of RFID transponder

A two-wire communication protocol between a controller device and a controlled device, wherein both devices are coupled by a clock line and a data line. The controller device sends control signals comprising N bits, N being greater than or equal to two, to the controlled device via the data line. Each bit of said control signals is latched onto the controlled device on consecutive edges of a clock signal sent by the controller device to the controlled device on the clock line.

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Colorado Springs, CO, United States of America

Bruce Carl Wall