Abstract:
Barrier elements provide security from terrorist threats by ability to withstand both vehicle collisions and explosive blasts. Each barrier element is prefabricated to include a massive block of durable material, preferably of high strength concrete, with at least one tunnel extending at least partially between respective cavities in two opposite sides of the block. Each barrier element also includes at least one beam that is preferably made of steel and extends through one such tunnel. Multiple blocks are positionable slidably on top of the ground side-against-side with their beams coupled longitudinally to one another at least approximately end-to-end. Retainer means can be used to block coupling means from entry into the tunnels. Forces from a vehicle collision or an explosive blast can cause barrier elements to rotate relative to one-another when the couplings between beams hinge or bend as the durable material that interferes with the rotation breaks away.
Abstract:
Masses of composite material are coupled together by means of one or more cables into a longitudinal barrier wall to provide security from terrorist threats by being able to withstand both vehicle collisions and explosive blasts. The one or more cables are routed through tunnels within the masses. The tunnels have tapered openings to protect cable from being sheared apart when adjacent masses slide relative to one-another. Some of the cable is anchored to some of the masses. Each mass that is located at an end of a barrier wall is used to support anchoring means to anchor some of the cable. Such barrier walls are supported by a surface such as a ground surface and can be dragged along such a surface since a ground anchoring means isn't required. Given sufficient cable, such a barrier wall can withstand great longitudinal tension, and can absorb and endure great amounts of mechanical and thermal energy.
Abstract:
An immersive display system which provides for an optical correlator for imaging a surface and generating data representative of the position or movement of the optical correlator and any object physically associated with the optical correlator. Imagery is generated and displayed on a display device in accordance with the data generated by the optical correlator.
Abstract:
Structures and methods using crystalline substrates enable precise and accurate manufacture of side-polished fiber optics. A groove constrains a fiber and includes multiple lengthwise portions with constant widths and depths. Where the depth(s) are small enough, the fiber can be side-polished to create a side-polished region. To either end of a side-polished region, groove depths are made large enough to protect the fiber from side-polishing. The curvature(s) of the fiber away from the side-polished region into deeper portions of the groove are controlled by at least the lengths and depths of the multiple lengthwise portions of the groove. A variety of 2, 3, and 4-port fiber optic apparatuses can be constructed using the disclosed structures.
Abstract:
An apparatus and method are described for monitoring the life of an arc lamp bulb. The apparatus includes a memory that stores a threshold property value. An arc lamp bulb property sensor acquires a current arc lamp bulb property value. A control circuit compares the current arc lamp bulb property value with the threshold property value. The control circuit generates an end-of-life notification signal when the current arc lamp bulb property value meets the threshold property value.
Abstract:
The present invention is a method and device for identifying recording media in a printer. The invention utilizes fine structure of the media revealed by illumination from one or more directions to distinguish among different kinds of plain papers, coated papers, such as glossy papers, and transparency films. When the medium is bond paper, by introducing light at an angle of less than approximately sixteen degrees relative to the surface, raised surface irregularities cast shadows creating a pattern rich in detail. For glossy surfaces, a high contrast image is obtained in the specular direction from normally incident illumination. The medium surface is imaged on an optoelectronic sensor to form a characteristic vector which is compared with reference vectors, corresponding to different media types, to determine the recording medium. The detection of the recording medium may then be used to change the characteristics of the printer.
Abstract:
A sensing device and method for determining the proximity and lateral movement of a second object relative to a first object. To determine proximity and lateral movement, the second object is illuminated to create light contrasts on that second object that correspond to unique structural and/or printed features of that second object. Light contrast data is compared to reference data to determine proximity and lateral movement of the second object relative to the first object. The invention typically utilizes an illumination source, imaging optics, and a sensor array mounted to the first object. This invention can be used in the end-effectors of a robotic arm to manage handling of a payload. It can also be used as a contact sensor to gate the operation of a manual scanning device when the scanner is brought into contact with the surface of a document.
Abstract:
A surface analysis scanner system includes calibration targets, which include a target substrate and a film covering the surface of the target substrate which is scanned by the surface scanner. The film is antireflective to the particular scanned light. Particles which contaminate the antireflectance film on the substrate do not scatter sufficient light to be detected by the surface analysis scanner detectors and thus do not interfere with the calibration of the scanner. The calibration targets may include reference features which are etched into the substrate surface or deposited on the antireflectance coated substrate surface which scatter light in a manner similar to particles on a surface. The reference features may also be imbedded in a transparent material supported by the antireflectance coated substrate with a second antireflectance film coating the upper surface of the transparent material. A surface analysis scanner system may also include a support structure for supporting an object to be scanned, an aperture structure, and a light trap structure for blocking the scanned light. Each structure includes a substrate having a coating of antireflectance film. A surface analysis scanner system may also include methods, utilizing antireflectance films, for reducing the amount of scanned light scattered by particles on a scanner system surface.
Abstract:
Networks of cameras and/or other sensors enable a sensor monitoring system or other computer system to control hiding devices used to enable the cameras and/or other sensors to evade danger by hiding or being disguised. Detection and/or determination of potential danger is garnered from data, from some of the cameras and/or sensors, that they or other of the cameras and/or sensors may be facing eminent danger of discovery, manipulation, alteration, deactivation, and/or damage. The hiding devices are caused to hide or disguise the sensors and/or cameras that appear to be in danger. Hiding or disguising can continue for at least a finite duration of time, or until indication of danger is gone. Some of the cameras and/or other sensors, and their associated hiding devices, can be turned off or made to sleep for periods of time until at least awaken by time-out events or by events indicating a need to do so.
Abstract:
Security systems may include sensing, networked communications, stealth, alarms, and countermeasures, any or all of which may adapt to threats. These systems may also include armor and barriers of concrete and/or steel. They can adapt to severity of threats, weather, and/or other situational aspects. They can anticipate at least some threats in order to obtain early warning and react more quickly to those threats. They can adapt by altering their configurations, including alterations in communication networking structures and methods, and changes in data-storage and processing duties at processing nodes. Defensive and/or offensive countermeasures can be employed to deter, confuse, trap, and/or disable terrorists. The systems are capable of self-maintenance, self-healing, and self-restoration as threats subside. The systems can include subsystems capable of autonomous operation. At least some of the systems and/or their subsystems are capable of allocating power among subsystems, and of regulating bandwidth utilizations.