EP 0608961 B1 19980902 - Detection system for detecting resonance effects of a label in a frequency-swept interrogation field by means of single sideband demodulation and method for carrying out such detection
Title (en)
Detection system for detecting resonance effects of a label in a frequency-swept interrogation field by means of single sideband demodulation and method for carrying out such detection
Title (de)
Verfahren und System zur Detektierung von Resonanzeffekten eines Etiketts in einem gewobbelten Abfragefeld mittels Einseitenbanddemodulation
Title (fr)
Procédé et système pour la détection des effets de résonance d'une étiquette dans un champ d'interrogation à balayage de fréquence au moyen de la démodulation d'une seule bande latérale
Publication
Application
Priority
NL 9300180 A 19930128
Abstract (en)
[origin: EP0608961A1] A detection system for detecting or identifying a label comprising at least one resonant circuit. The system comprises a transmitter unit for generating a frequency-swept electromagnetic interrogation field and a detection unit for detecting resonance effects caused by a label located in the interrogation field. According to the invention the detection unit comprises a transmitter unit which detects signals coming from just one label frequency sideband of the instantaneous frequency of the interrogation field for detecting resonance effects which occur at least substantially in one sideband of a resonant frequency of the label. <IMAGE>
IPC 1-7
IPC 8 full level
G08B 13/24 (2006.01)
CPC (source: EP)
G08B 13/2414 (2013.01); G08B 13/2417 (2013.01); G08B 13/2431 (2013.01); G08B 13/2471 (2013.01)
Designated contracting state (EPC)
DE ES FR GB IT NL SE
DOCDB simple family (publication)
EP 0608961 A1 19940803; EP 0608961 B1 19980902; DE 69412872 D1 19981008; DE 69412872 T2 19990512; ES 2121139 T3 19981116; NL 9300180 A 19940816
DOCDB simple family (application)
EP 94200205 A 19940128; DE 69412872 T 19940128; ES 94200205 T 19940128; NL 9300180 A 19930128