A wireless recording device can be interrogated to determine its identity and its state. The state indicates whether a particular physical or chemical event has taken place. In effect, the physical or chemical event is recorded by the device. The identity of the device allows it to be distinguished from a number of similar devices. Thus the sensor device may be used in an array of devices that can be probed by a wireless interrogation unit. The device tells the interrogator who it is and what state it is in. The interrogator can thus easily identify particular items in an array that have reached a particular condition.

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Wireless event-recording device with identification codes

Physical objects may be employed with a virtual game layout to enhance wager and non-wagered based gaming. Displays subsystems may provide a changeable or selectable virtual game layout with demarcations appropriate to a selected game. A sensor subsystem may detect physical aspects of game related pieces (e.g., playing cards, chips, markers, dice, spinners, tokens, tiles) as well as media (e.g., identity media, financial media). All gaming functions may occur through interaction with a playing surface, as well as functions such as order food, beverages and services. Automated tracking of players, dealers and games may be realized along with bonusing and promotions.

Game related systems, methods, and articles that combine virtual and physical elements

A radio frequency identification (RFID) inlay (102) includes a conductive (124) or capacitive connection electrically connecting an antenna (106) to strap leads (116) that are coupled to an RFID chip (110). The conductive connection may include conductive bumps (124) attached to the strap, and/or may include conductive traces, such as conductive ink traces. The capacitive connection may involve putting the antenna and the strap into close proximity, to allow capacitive coupling between the antenna and straps. The connections provide a convenient, fast, and effective way to operatively couple antennas and straps. The RFID inlay may be part of an RFID label or RFID tag.

RFID device and method of forming

Woodworking machines including conductive cutters adapted to cut workpieces, and motors adapted to drive the cutters are disclosed. The machines also include a contact detection system adapted to detect contact between a person and the cutter, and to distinguish contact between the person and the cutter from contact between the workpiece and the cutter. The machines further include a reaction system adapted to cause a predetermined action to take place upon detection of contact between the person and the cutter by the contact detection system.

Detection system for power equipment

Described herein are wireless interrogation systems and methods that rely on a complementary sensing device and interrogator. The sensing device is disposed to measure a parameter indicative of the health of a structure. A sensor reading from the sensor indicates the level of a parameter being monitored or whether one or more particular physical or chemical events have taken place. Using wireless techniques, the interrogator probes the device to determine its identity and its current sensor reading. This often includes transmission of a wireless signal through portions of the structure. When activated, the device responds with a wireless signal that identifies the device and contains information about the parameter being measured or a particular sensor state corresponding to the parameter. The identity of the device allows it to be distinguished from a number of similar devices. Thus this invention finds particular usefulness in the context of an array of devices that can be probed by a wireless interrogation unit. In one embodiment, the devices are passive and derive power from the interrogation signal.

Sensor devices for structural health monitoring

A resonant tag (58) used with an electronic article surveillance system for detecting the tag within a surveilled area utilizing electromagnetic energy at a predetermined detection frequency includes a resonant circuit (66, 68) capable of resonating at the predetermined detection frequency. The resonant circuit (66, 68) includes an inductor (66) formed at least in part on a surface of a dielectric substrate of the tag (58). The inductor (66) is formed with a discontinuity or gap (74) causing an electrical open circuit. The open circuit is closed with a fuse (36) secured proximate to the gap (74) and wirebonded (40, 42) to the portions of the inductor (66) proximate to the gap (74). The fuse (36) is melted by a current greater than a predetermined level flowing therethrough. Such a high current may be induced in the inductor (66) by an external electromagnetic field. Melting of the fuse (36) causes an open circuit condition, which alters the frequency at which the tag (58) resonates.

Deactivateable resonant circuit

A security tag used with an electronic article surveillance system for detecting the presence of the tag within a surveilled area utilizing electromagnetic energy at a frequency within a predetermined detection frequency range includes a dielectric substrate having first and second opposing principle surfaces, a peripheral outer edge, and a resonant circuit capable of resonating at a frequency within the predetermined detection frequency range. The security tag also includes a guard member, in one embodiment a discontinuous conductive member, effectively electrically isolated from the resonant circuit, extending along at least a portion of the peripheral outer edge of the substrate for surrounding at least a portion of the resonant circuit. The guard member electrically isolates the resonant circuit to facilitate testing of the resonant circuit during an early stage of the manufacturing process when the resonant circuit is in web form.

Security tag and manufacturing method

A security tag (20) for use with an electronic security system which functions within a second frequency range comprises a substantially planar dielectric substrate (22) having first and second sides (24,26). A first conductive pattern (28) is provided on the first side of the substrate, the first conductive pattern comprising at least a first inductive element (32), a first plate of a first capacitive element (36), and a first plate of a second capacitive element (38). A second conductive pattern (30) located on the second side of the substrate comprises at least a second inductive element, a second plate of the first capacitive element (40) and a second plate of a second capacitive element (42) with the plates of the capacitive elements being generally aligned. The inductive elements and the capacitive elements form a resonant circuit which resonates at a first frequency within a first frequency range which is outside of the second frequency range. A direct electrical connection (52) extends through the substrate to electrically connect the first conductive pattern to the second conductive pattern to thereby continuously maintain both sides of the substrate at substantially the same static charge level.

Activatable/deactivatable security tag with enhanced electrostatic protection for use with an electronic security system

PROBLEM TO BE SOLVED: To enhance the uniformity of the size of a inductor coil and also to improve the stability of a resonant frequency by making a guard member that is an uncontinuous conductive member extend at least partially over ambient outer edges of a dielectric substrate and surround at least partially a resonant circuit. SOLUTION: A 1st conductive pattern 22 and a 2nd conductive pattern form one resonant circuit. An electrically uncontinuous conductive member, i.e., a conductive member that operates as a guard rail 36 which surrounds the resonant circuit at least partially extends an ambient outer edges 20 of a dielectric substrate and at least partially encloses the resonant circuit. Though the rail 36 is made from conductive material, and when a non-conductive barrier is formed between the edges 20 of the dielectric substrate and the resonant circuit and is in the, form of a web, the rail 36 which insulates the resonant circuit from other plural resonant circuits can be made from non-conductive material. When the resonant circuits are in the form of a web so that they are easily tested, it is effectively insulated from the resonant circuits.

Appalucci Lawrence

Papers

Deactivateable resonant circuit

Security tag and manufacturing method

Activatable/deactivatable security tag with enhanced electrostatic protection for use with an electronic security system

Safety tag and its producing method