Alarm systems, wireless alarm devices, and article security methods
First Claim
1. An alarm system comprising:
- a base communication device configured to communicate wireless signals within a range of frequencies;
a remote communication device configured to communicate with the base communication device using the wireless signals, wherein the remote communication device is adapted to be associated with an article to be secured and wherein the remote communication device comprises alarm circuitry;
wherein the remote communication device comprises an antenna circuit configured to receive the wireless signals communicated by the base communication device and to generate first electrical signals corresponding to respective ones of the received wireless signals, and the remote communication device further comprises a detector comprising a non-linear device configured to receive the first electrical signals and to provide second electrical signals having a non-linear relationship to the first electrical signals, wherein the detector further comprises a parallel LC circuit configured to provide increased impedance at the range of frequencies of the wireless signals compared with other frequencies outside of the range of frequencies; and
wherein the remote communication device further comprises processing circuitry coupled with the non-linear device and configured to process the second electrical signals and to control the alarm circuitry to generate a human perceptible alarm responsive to the processing.
7 Assignments
0 Petitions
Accused Products
Abstract
Alarm systems, wireless alarm devices, and article security methods are described according to some aspects of the disclosure. In one aspect, an alarm system includes a base communication device configured to communicate wireless signals, a remote communication device configured to communicate with the base communication device using the wireless signals, wherein the remote communication device is adapted to be associated with an article to be secured and wherein the remote communication device comprises alarm circuitry, wherein the remote communication device comprises a non-linear device configured to detect the wireless signals communicated by the base communication device and to generate electrical signals corresponding to respective ones of the detected wireless signals, and wherein the remote communication device further comprises processing circuitry coupled with the non-linear device and configured to process the electrical signals and to control the alarm circuitry to generate a human perceptible alarm responsive to the processing.
-
Citations
37 Claims
-
1. An alarm system comprising:
-
a base communication device configured to communicate wireless signals within a range of frequencies; a remote communication device configured to communicate with the base communication device using the wireless signals, wherein the remote communication device is adapted to be associated with an article to be secured and wherein the remote communication device comprises alarm circuitry; wherein the remote communication device comprises an antenna circuit configured to receive the wireless signals communicated by the base communication device and to generate first electrical signals corresponding to respective ones of the received wireless signals, and the remote communication device further comprises a detector comprising a non-linear device configured to receive the first electrical signals and to provide second electrical signals having a non-linear relationship to the first electrical signals, wherein the detector further comprises a parallel LC circuit configured to provide increased impedance at the range of frequencies of the wireless signals compared with other frequencies outside of the range of frequencies; and wherein the remote communication device further comprises processing circuitry coupled with the non-linear device and configured to process the second electrical signals and to control the alarm circuitry to generate a human perceptible alarm responsive to the processing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A wireless alarm device comprising:
-
a housing adapted to couple with an article to be secured; a diode coupled with the housing and configured to receive first electrical signals corresponding to wireless signals communicated by a base communication device of an alarm system and to generate second electrical signals responsive to the reception of the first electrical signals; alarm circuitry coupled with the housing and configured to generate a human perceptible alarm; and processing circuitry configured to process the second electrical signals including identifying individual ones of a plurality of pulses of the second electrical signals as corresponding to the wireless signals communicated by the base communication device, and to control the alarm circuitry to generate the human perceptible alarm responsive to the identification. - View Dependent Claims (12, 13, 14, 15, 16, 17)
-
-
18. An article security method comprising:
-
associating a remote communication device of an alarm system with an article to be secured; emitting a wireless signal within a secured area using a base communication device of the alarm system; moving the remote communication device and the associated article into the secured area; receiving the wireless signal using the remote communication device located within the secured area; using the remote communication device, generating a first electrical signal corresponding to the wireless signal; using a detector of the remote communication device, generating a second electrical signal having a non-linear relationship with respect to the first electrical signal, the detector providing an increased impedance at frequencies of the wireless signal emitted by the base communication device compared with other frequencies; and using the remote communication device, emitting a human perceptible alarm responsive to the generating the second electrical signal. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
-
-
28. An article security method comprising:
-
receiving a wireless signal comprising resonating an antenna circuit of a remote communication device, the resonating generating a first electrical signal; using the remote communication device, generating a second electrical signal responsive to the generating the first electrical signal, the second electrical signal having a non-linear relationship with respect to the first electrical signal; and generating a human perceptible alarm to indicate the presence of the remote communication device and an article associated with the remote communicate device within a secured area; and identifying the wireless signal as being a communication from a base communication device of an alarm system comprising the remote communication device, the identifying comprising identifying a predefined pattern of a plurality of pulses within the second electrical signal, and wherein the generating the human perceptible alarm comprises generating responsive to the identifying. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37)
-
Specification