摘要:
A flat PLZT plate is utilized to form erasable images thereon which images may be projected or viewed directly. One embodiment includes electrically conductive islands on one side of the PLZT plate which are surrounded by and electrically isolated from an electrically conductive grid pattern. The portion of the PLZT plate located between an island and the surrounding portion of the grid pattern constitutes a pixel or image forming element. By grounding the grid pattern and applying an electrical charge to selected ones of the islands, an image can be formed on the PLZT plate which can be viewed directly or projected by means of polarized light. In order to form the erasable images on the PLZT plate by optical means, the grid pattern and islands are coated with a layer of photoconductive material upon which a layer of a transparent conductor is coated. By applying a potential to the transparent conductor and exposing the coated PLZT plate to an optical image, those islands subjected to the light radiation receive an electrical charge thereby forming a birefringence image in the PLZT plate.
摘要:
Graphic data entry in an interactive graphic display system is achieved by means of an apparatus that provides automatic centering of a pointing laser beam on a hand held cursor. The graphic display system provides a means for displaying and comparing through superposition full size overlaid graphical data and projected graphical data on a common display screen. It includes a steerable pointing laser the beam of which scans the display screen in response to a laser beam deflection circuit. The system also includes laser beam position sensing and indicating circuits which accurately measure the laser beam position. Centering of the laser beam on the cursor at the display screen is accomplished by dithering the beam uniformly about its average position in a discrete dither pattern and utilizing the dither pattern to determine misalignment of the beam's average position with respect to the center of the cursor. The cursor includes photo detector elements that are geometrically configured to conform to the dither pattern so that signals derived from an eccentric relationship of the beam dither pattern and the photo detector element configuration can be processed to provide beam misalignment direction and magnitude error signals. These error signals drive a servo system that centers the average beam position on the cursor. The function of the cursor is to manually or automatically measure the coordinator of graphical features on the display screen.
摘要:
The invention provides a system and method for receiving hazard and event information in a mobile unit and using that information to warn a user of an event or future hazard with reference to the mobile unit's location and/or intended direction of travel. A hazard location algorithm compares a forecast location of each mobile unit with a forecast hazard and transmits a warning to each mobile unit that is predicted to encounter the hazard. As the mobile unit moves, its actual position is updated in an event center, and a revised warning is transmitted to the mobile unit as applicable. Warnings include audio warnings for playback and/or visual warnings for display on the mobile device. Users may also wirelessly report events or hazards to a central server in an event center by sending data to the event center via a wireless communications network. Secondary information may be included, based on the selected event type.
摘要:
The external crash attenuation airbag includes an inflatable bladder which is inflatable to an exterior of an aircraft, so that the inflatable bladder is generally located between the aircraft and a crash surface when inflated. The airbag includes a vent configured to burst at a predefined burst pressure, the vent being located along a side portion of the inflatable bladder. The airbag also includes a vent support located approximate the vent, the vent support being configured to prevent deformation and therefore maintain the effectiveness of a venting area of the vent, and the vent support being rigid and annular and includes an upper portion and a lower portion that are hinged together around the vent.
摘要:
A crash attenuation system has an airbag inflatable generally adjacent to an exterior of the aircraft. The system includes a gas generator in fluid communication with an interior of the airbag. The system also includes a vent system having a vent passage supported by the aircraft, the vent passage being configured to allow gas to escape from within the airbag during an impact. The vent system also includes an actuator door for sealing the vent passage, thereby preventing gas from leaving the airbag. The actuator door is actuated by an actuator, the actuator being in fluid communication with the gas generator through an actuator duct. The system operates such that deployment of gas from the gas generator causes the actuator to inflate, thereby causing the actuator door to seal the vent passage. The gas generator is configured to re-inflate the airbag after the actuator door seals the vent passage.
摘要:
A method is provided that includes: receiving, by one or more server devices, voice over Internet protocol (VoIP) traffic management rules from a network operations center; gathering, by the one or more server devices, VoIP traffic data from a VoIP network; analyzing, by the one or more server devices, the VoIP traffic data; creating, by the one or more server devices, a ticket based on the VoIP traffic management rules and the VoIP traffic data; and automatically sending, by the one or more server devices, the ticket to the network operations center based on the VoIP traffic management rules.
摘要:
An occupant protection system for an aircraft comprising a sensor system for sensing flight condition information and a control system, which includes an impending crash detection system and an impact detection system. The impending crash detection system receives flight information from the sensors determines whether a crash is likely to occur. If an impending crash is detected, the impending crash detection system activates impact modes of a first group of aircraft systems. The impact detection system receives flight information from the sensor system and determines whether an impact has occurred or is occurring. If an impact is detected, the impact detection system activates impact modes of a second group of aircraft systems.
摘要:
A method and system for including security information with a packet is disclosed. A packet is detected as it exits a first network and enters a second network. The first network is configured to support a network security technique, and the second network is not configured to support the network security technique. Network security information associated with the network security technique is included with the packet. A network device is configured to include network security information in overhead of a packet. A method for identifying a first network device in a network is also disclosed. Identification information of the first network is communicated to a second network device.
摘要:
A method and apparatus for providing network security using security labeling is disclosed. The method includes comparing first security level information and second security level information, and indicating processing to be performed on the packet based on the comparing. The first security level information is stored in a security label of a packet received at a network node, while the second security level information is stored at the network node.
摘要:
A method may involve: receiving a packet (e.g., via a port or uplink interface in a satellite switch) and conveying the packet between one or more ports and one of several uplink interfaces. The one or more ports and the uplink interface are associated with each other. The association can be independent of VLAN (Virtual Local Area Network). As an example, such a method can involve: receiving a first packet via a first port; conveying the first packet to a distribution-layer via a first uplink interface; receiving a second packet via a second port; and conveying the second packet to the distribution-layer via a second uplink interface, where the first uplink interface is associated with the first port and the second uplink interface is associated with the second port. In some embodiments, ports and uplink interfaces are associated by being assigned to the same virtual linecard.