摘要:
Systems and methods for controlling access to a Restricted Area (“RA”). The methods involve: determining whether a person desires to enter RA; checking whether the person is authorized to enter RA using a first unique identifier associated with a wearable access sensor being worn thereby; causing the person's Portable Communication Device (“PCD”) to transmit a second unique identifier and location information useful in determining the PCD's location within a surrounding environment, when a determination is made that the person is authorized to enter RA; using the second unique identifier and location information to confirm that the person is currently located at an access point of RA; and causing actuation of a mechanical actuator to enable the person's entrance into RA when it is determined that the person desires to enter RA, the person is authorized to enter RA, and the person is currently located at the access point of RA.
摘要:
A mixing inlay (102) is provided which includes a first radiating element (110a), a second radiating element (110b), and a non-linear mixing component (112) connected between adjacent end portions (114a, 114b) of the first and second radiating elements. The mixing inlay is configured to receive a first exciter signal having a first frequency and a second exciter signal having a second frequency, and in response, to radiate a mixing product signal produced by the mixing inlay from the first and second exciter signals. A conductive parasitic element (116) is disposed within a near field of the re-radiating transponder. A distance provided between the conductive parasitic element and the radiating elements is varied over the length of the conductive parasitic element to enhance a sideband signal generated by the mixing inlay.
摘要:
An EAS security tag for providing both EAS and battery recharging features within one tag. The tag includes a rechargeable battery and an antenna having a magnetic core and at least one coil winding disposed around at least a portion of the core. The antenna supplies a voltage corresponding to a first frequency or a second frequency when placed within a magnetic field. The tag also includes an EAS circuit having a resonant frequency corresponding to the first frequency, and an energy harvesting circuit having a resonant frequency corresponding to the second frequency, where the battery recharging circuit recharges the rechargeable battery. Depending upon the magnetic field that the tag is exposed to, either the EAS circuit is enabled thus allowing for EAS detection or the energy harvesting circuit is enabled allowing for the battery to be recharged.
摘要:
Disclosed are a system and method to detect RFID tags in electronic article surveillance systems using frequency mixing. The system includes an RFID module that includes an energy coupler to receive transmitted energy that includes a first signal at a first frequency and a second signal at a second frequency, and a mixing element to mix the first and second signals, to generate a third signal at a third frequency, and the energy coupler to transmit the third signal to an EAS detection system. Other embodiments are described and claimed.
摘要:
A security tag and system for securing objects, the system and security tag includes an acousto magnetic (“AM”) electronic article surveillance (“EAS”) component that has a housing with a defined surface area. The housing of the EAS component includes a perimeter boundary that defines an EAS component plane. The system and security tag further include a radio frequency identification (“RFID”) component that includes an integrated circuit and a dipole antenna defining an RFID component plane that is substantially coplanar with the EAS component plane. The integrated circuit and the dipole antenna are positioned externally along the perimeter boundary of the EAS component.
摘要:
A security device detaches a combination electronic article surveillance (EAS) and radio frequency identification (RFID) tag (EAS/RFID tag), and includes a detacher (magnet) to selectively disengage a clutch release disposed in a first portion of the combination EAS/RFID tag, a near field antenna configured to electronically read information stored in a second portion of the combination EAS/RFID tag. The antenna encircles the detacher and reads information from the second portion of the combination EAS/RFID tag at a position relative to the detacher when the second portion of the tag is disposed at any angle relative to the detacher and only when the detacher is positioned to disengage the clutch release. As long as the portion of the EAS/RFID tag containing the clutch end mechanism is located over the detaching magnet, the RFID label is in a valid detection zone regardless of its orientation relative to the antenna.
摘要:
A nanocrystalline core antenna for use in electronic article surveillance (EAS) and radio frequency identification (RFID) systems. The nanocrystalline antenna is constructed from nanocrystalline material and exhibits improved detection range in EAS and RFID systems compared to conventional antenna configurations.
摘要:
An apparatus and method for determining the position of magnetic tape within a magnetic tape cassette to ascertain whether the magnetic tape is in a rewound position within the cassette is provided. In a first aspect of the present invention, the magnetic tape cassette has two internal magnetic tape take-up reels. The magnetic tape stored on the tape-up reels is detected. The rewound status of the tape is determined by whether the magnetic tape is detected on only one reel or on both reels. In a second aspect of the present invention, a preselected amount of magnetic tape is detected within the magnetic tape cassette. The magnetic tape cassette is oriented and the position of the detected magnetic tape is determined relative to the orientation of the magnetic tape cassette. In a third aspect of the present invention, an electronically detectable member positioned in a known location of the cassette is detected. A preselected amount of magnetic tape within the cassette is detected. The time difference between the detection of the magnetic tape and the detection of the electronically detectable member is used to determine the position of the magnetic tape relative to the cassette. The electronically detectable member can be an electronic article surveillance marker.
摘要:
The present invention replaces the conventional bias magnets for EAS markers with a paintable or printable bias magnet material, which is either directly painted onto the EAS marker or first placed onto a substrate material, which is then placed into the EAS marker. The material includes a magnetic powder mixed with resin and solvent. This “bias paint” is then applied onto the EAS marker. The magnetic powder, resin, and solvent provide a very dense layer after drying, which has a magnetic material density that is usually lower than a rolled product, but is higher than that of the injection-molded magnet material. Printing the bias magnet allows nondeactivatable magnetomechanical EAS markers to be made using web-based mass production methods.
摘要:
A self-checkout/self-check-in and electronic article surveillance (EAS) system is provided. EAS tags and radio frequency identification (RFID) tags are connected to articles for use with the invention. A preferred embodiment for self-checkout includes a housing having a cavity for receiving articles for self-checkout. The cavity is disposed within a deactivation zone. The RFID tags are read, and after verification of an authorized transaction, a deactivation antenna is energized to deactivate the EAS tags, and a stored inventory database is updated. Information about the transaction can be displayed. A preferred embodiment for self-check-in includes an elongated housing into which articles are deposited for return. Once deposited, the articles pass through the housing and out the other end. As the articles are deposited, the RFID tags on the articles are read, the inventory database is updated, and an activation antenna is energized to form an activation zone through which the articles pass as they fall through the housing, thus activating the attached EAS tags. The magnetic fields used for activation and deactivation are magnetic media safe for use with articles containing magnetic recording media.