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1. (WO2017148760) BIDIRECTIONAL TRANSPONDER WITH LOW ENERGY USE

Pub. No.:    WO/2017/148760    International Application No.:    PCT/EP2017/054022
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Thu Feb 23 00:59:59 CET 2017
IPC: G06K 19/07
G06K 19/077
Applicants: REIME, Gerd
Inventors: REIME, Gerd
Title: BIDIRECTIONAL TRANSPONDER WITH LOW ENERGY USE
Abstract:
The invention relates to a transponder (4.1) which has at least one wake-up unit and at least one data exchange unit for a bidirectional data communication with at least one reading device (4.5), in particular for detecting and/or controlling access authorization to rooms or objects, wherein the reading device automatically transmits signals at least during particular time periods. Because the wake-up unit is permanently ready to receive signals (4.11) for starting data communication between the transponder and the reading device, a device is provided in which a transponder can react to requests of a reading unit without a substantial loss of time in a permanent manner, i.e. not just in short time interval specified by the transponder, and thereby achieves a long service life.