Electronic label reading system
First Claim
1. An electronic label reading system including:
- an interrogator including a transmitter for generating an interrogation signal and a receiver for detecting and decoding a reply signal;
an interrogation field creation means including a transmitter antenna connected to said transmitter for generating from said interrogation signal an interrogation electromagnetic field through which objects possessing code responding labels may pass;
said code responding labels including label receiving antennas for receiving from said interrogation field a label interrogation signal, means for generating label reply signals, and means for generating from said label reply signals, reply electromagnetic fields;
a receiver antenna connected to said receiver for receiving said reply signals from said label reply fields;
wherein said interrogation field and label reply fields provide a communication channel from said labels to said interrogator, and said interrogator includes means for signalling to said labels condition information indicative of the condition of said communication channel.
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Accused Products
Abstract
An electronic label reading system is disclosed having an interrogator including a transmitter for generating an interrogation signal and a receiver for detecting and decoding a reply signal. The system also has an interrogation field creation means including a transmitter antenna connected to the transmitter for generating from the interrogation signal an interrogation electromagnetic field through which objects possessing code responding labels may pass. The code responding labels include label receiving antennas for receiving from the interrogation field a label interrogation signal, means for generating label reply signals, and means for generating from the label reply signals, reply electromagnetic fields. The system also has a receiver antenna connected to the receiver for receiving the reply signals from the label reply fields. The system is arranged so that the interrogation field and label reply fields provide a communication channel from the labels to the interrogator, and the interrogator includes means for signalling to the labels condition information indicative of the condition of the communication channel.
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Citations
47 Claims
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1. An electronic label reading system including:
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an interrogator including a transmitter for generating an interrogation signal and a receiver for detecting and decoding a reply signal;
an interrogation field creation means including a transmitter antenna connected to said transmitter for generating from said interrogation signal an interrogation electromagnetic field through which objects possessing code responding labels may pass;
said code responding labels including label receiving antennas for receiving from said interrogation field a label interrogation signal, means for generating label reply signals, and means for generating from said label reply signals, reply electromagnetic fields;
a receiver antenna connected to said receiver for receiving said reply signals from said label reply fields;
wherein said interrogation field and label reply fields provide a communication channel from said labels to said interrogator, and said interrogator includes means for signalling to said labels condition information indicative of the condition of said communication channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. An electronic label reading system substantially as herein described with reference to the accompanying drawings.
Specification