摘要:
A deactivation apparatus for an electronic article surveillance tag having a plurality of layers and an equivalent resonant circuit containing an inductor and a capacitor is provided. The apparatus includes: a capacitor formed by a pair of conductive capacitor plates separated apart by a dielectric layer; an inductor connected to each of the pair of capacitor plates where an electromagnetic field of a preselected frequency at a first magnitude impinging upon the tag causes the equivalent resonant circuit to resonate and produce a detectable response from the tag; and, an electrically weakened area in the dielectric layer between the pair of conductive capacitor plates where the electromagnetic field at a second magnitude higher than the first magnitude impinging upon the tag causes a conductive path through the weakened area electrically connecting the pair of capacitor plates together and deactivating the tag.
摘要:
A system, apparatus, and method to combine radio frequency identification and electronic article surveillance receivers into a single device are described. Other embodiments are described and claimed.
摘要:
A security system including a camera configured to generate a video signal, an object recognition system coupled to the camera and configured to receive and monitor the video signal and a portable personal digital assistant (PDA) wirelessly coupled to the object recognition system and the camera. The PDA may display video from the camera and/or data or alarms in response to output from the object recognition system. Methods of providing security information including displaying live video on a PDA and providing a signal on the PDA in response to an output of an object recognition system are also provided.
摘要:
An object recognition system including a light source controller configured to control an illumination level of a light source in response to an ambient light level. A camera is configured to capture an image of an object illuminated by the light source. A computer compares data representative of the image to stored image data. A method of illuminating an object in an object recognition system and a method of controlling access of an object to a secure area are also provided.
摘要:
A deactivatable EAS tag in which a circuit comprising a non-linear element causes the generation of a detectable signal in response to an interrogating signal and in which a first magnetic element is arranged to be brought from a first position where the magnetic element does not short the non-linear element to a second position where the magnetic element shorts the non-linear element.