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| Number | Title | Issue Date |
| 5805065 | Electro-magnetic desensitizer A magnetic security marker of an article surveillance system is deactivated by first determining the status of the marker by exposing it to the interrogating field. If the marker is active, a deactivation field is applied to the marker. The marker is agai... | 09/08/1998 |
| 5755226 | Method and apparatus for noninvasive prediction of hematocrit A method and apparatus for the direct noninvasive prediction of hematocrit in mammalian blood using photoplethysmography techniques and data processing. The method and apparatus also include optional prediction of other analytes of interest: percent oxyge... | 05/26/1998 |
| 5657008 | Electronic license plate having a secure identification device A electronic license plate system having an identification device embedded in a license plate portion and electronics stored in a license plate holder ensures that the proper identification device is connected to the electronics. The identification device... | 08/12/1997 |
| 5625339 | Apparatus for changing the status of magnetic markers in an electronic article surveillance system The present re/desensitizer is an apparatus for changing the status of a magnetic marker of an electronic article surveillance system. The markers are attached to or otherwise associated with an object to be protected, such has a book, CD, etc. The device... | 04/29/1997 |
| 5621645 | Automated lane definition for machine vision traffic detector A method and apparatus defines boundaries of the roadway and the lanes therein from images provided by video. The images of the roadway are analyzed by measuring motion between images and detecting edges within motion images to locate edges moving paralle... | 04/15/1997 |
| 5621571 | Integrated retroreflective electronic display An integrated retroreflective data communication display for visual and electromagnetic communication is described. The display may be configured as an integrated retroreflective electronic license plate, with printed visual information, similar to the in... | 04/15/1997 |
| 5619616 | Vehicle classification system using a passive audio input to a neural network A system for classifying vehicles based on the sound waved produced by the vehicles receives analog sound pressure levels and converts them to a power spectrum. Fuzzification functions, such as asymmetric wedge shaped functions, are convoluted with the po... | 04/08/1997 |
| 5608391 | Electronic license plate architecture An electronic license plate architecture is described wherein a license plate portion has a conventional license plate having visual information thereon and an identification device integrated therewith. The identification device stores restricted informa... | 03/04/1997 |
| 5602739 | Vehicle tracking system incorporating traffic signal preemption An embedded system controller-based vehicle tracking system using vehicle positioning. An embedded system controller controls a traffic intersection using an optical system. The embedded system controller receives a vehicle location and a vehicle schedule... | 02/11/1997 |
| 5580664 | Dual status thin-film eas marker having multiple magnetic layers A dual status marker for use with a magnetic-type EAS system has a signal-producing layer including at least one magnetic thin-film of high permeability and low coercive force such as permalloy, and a signal-blocking layer including at least one remanentl... | 12/03/1996 |
| 5550923 | Directional ear device with adaptive bandwidth and gain control An ear device protects a user from damaging sound levels while permitting the user to hear and understand conversation in a noisy environment. The device includes an enclosure system for at least partially isolating the user's ear drums from ambient sound... | 08/27/1996 |
| 5539398 | GPS-based traffic control preemption system A traffic control preemption system uses data received from a global positioning system (GPS) to determine whether a vehicle issuing a preemption request is within an allowed approach of an intersection. GPS signals are received and processed by the vehic... | 07/23/1996 |
| 5523753 | Vehicle detector system with periodic source filtering A detector system filters the effects of periodic noise such as magnetic flux from nearby power lines or other periodic sources. The detector system further adapts in the case that the system incorporates microloops for the inductive sensors. The detector... | 06/04/1996 |
| 5508698 | Vehicle detector with environmental adaptation A reference value used in a vehicle detector is checked and adjusted. The vehicle detector determines the speed of a vehicle which it has detected and then makes a sample measurement after the vehicle has left the detection area of its inductive sensor. T... | 04/16/1996 |
| 5477219 | Composite electronic article surveillance, identification, and security marker assembly and system A composite marker providing electronic article surveillance (EAS), identification, and authentication. The marker preferably includes an EAS detection element which includes a low-coercive force, high-permeability ferromagnetic material, and an adjacent,... | 12/19/1995 |
| 5477202 | Deactivating device for magnetic markers in an electronic article surveillance system A deactivating device for magnetic markers in an electronic article surveillance (EAS) system includes a housing adapted to constrain typical audio and video cassettes in preferable orientations with respect to first and second deactivating surfaces. The ... | 12/19/1995 |
| 5440296 | Coil assembly for electronic article surveillance system An antenna lattice for use in a magnetically based electronic article surveillance system. The lattice includes a field-producing coil assembly which includes a pair of trapezoidal-shaped segments, each having a diagonally extending lower portion, the seg... | 08/08/1995 |
| 5432499 | Collector type article surveillance marker with continuous keeper A dual-status marker for use in electronic article surveillance systems having an alternating magnetic field within an interrogation zone. The marker comprises a piece of a high permeability, low coercive force magnetic material substantially coextensive ... | 07/11/1995 |
| 5405702 | Method for manufacturing a thin-film EAS and marker A method for manufacturing a nonlinear, dual-axis thin-film magnetic device which can be used as an electronic article surveillance system marker. The method includes providing a substrate having a surface characterized by first and second generally perpe... | 04/11/1995 |
| 5361064 | Vehicle detector with power main noise compensation A vehicle detector includes an inductive sensor which is driven by an oscillator to produce an oscillator signal having a frequency which is a function of inductance of the inductive sensor. Presence of a vehicle is detected when measured frequency of the... | 11/01/1994 |
| 5353010 | Device and a method for detecting a magnetizable marker element To detect a marker element, a transmitter generates an alternating magnetic field. A receiver arranged in this field generates an electrical signal having a waveform corresponding to the magnetic flux density of the alternating magnetic excitation field s... | 10/04/1994 |
| 5349502 | Universal lattice for magnetic electronic article surveillance system A universal lattice assembly for use in a magnetic-type electronic article surveillance system is disclosed which comprises a frame formed of two identical molded plastic half-shells, a metal chassis within which specific electronic sub-assemblies may be ... | 09/20/1994 |
| 5347508 | Optical information storage disk for use with electronic article surveillance systems An optical information storage disk especially adapted for tamper-proof monitoring by an electronic article surveillance (EAS) system. The compact disk hereof includes a generally planar, annular first disk surface and an opposed, generally annular second... | 09/13/1994 |
| 5331313 | Marker assembly for use with an electronic article surveillance system A marker assembly adapted for use with an electronic article surveillance (EAS) system, and particularly for use with books to be monitored by an EAS system, includes a flat elongated, marker strip of low coercive force, high permeability ferromagnetic ma... | 07/19/1994 |
