Patent Number: 7,088,245

Title: Remote-readable identification tag and method for operating the same

Abstract: A remote-readable identification tag (T) that is provided with at least two resonance circuits (81 . . . 8n) and at least one transmitter/receiver antenna system (1) coupled with the circuits. The at least two circuits have a respectively different resonant frequency. A delay device (6) of the remote-readable identification tag delays a signal response between a signal received by the antenna system and a signal emitted in response by the antenna system, e.g., by delaying feeding the received signal into the resonance circuits.

Inventors: Guntersdorfer; Max (Grafing, DE), Zarschizky; Helmut (Munich, DE), Zorn; Gerhard (Aying, DE)

Assignee: Siemens Aktiengesellschaft

International Classification: G08B 13/14 (20060101)

Expiration Date: 8/08/02018