摘要:
A portable wideband harmonic signal generator includes circuitry for generating a signal having a selected fundamental frequency, for producing a signal having a harmonic series of the selected fundamental frequency, for transferring the signal having the harmonic series using a balanced impedance output, and for directionally transmitting transferred signal having the harmonic series using a directional antenna having a characteristic impedance that is matched to the balanced impedance output. There is thus provided a compact, efficient transmitter and antenna assembly for transmitting a wideband signal.
摘要:
A Personal Computer Memory Card International Association (PCMCIA) card is disclosed. The PCMCIA card may include a cryptographic module, a communications interface, and a processor. The cryptographic module may perform Type 1 encryption of data received from a computer into which the card is inserted. The cryptographic module may support High Assurance Internet Protocol Encryption (HAIPE). The communications interface may provide connectivity to a network adapter. The communications interface may include a Universal Serial Bus (USB) interface. The processor may detect whether a network adapter is coupled to the communications interface, identify a device driver that corresponds to the network adapter, and employ the device driver to provide operative communication between the cryptographic module and the network adapter. The PCMCIA card may contain a datastore that maintains a plurality device drivers. For example, the plurality of device drivers support any one of IEEE 802.x, Ethernet, V.90, or RS-232 network protocols.
摘要:
A tamper-indicating printable sheet. A preferred embodiment of the invention provides a tamper-indicating printable sheet comprising a retroreflective layer comprising a plurality of microbeads partially embedded in an inkjet receptive beadbond layer; and a reflector layer between one of the microbeads and the inkjet receptive beadbond layer. The present invention provides a method of making a tamper-indicating printable sheet.
摘要:
An optical transceiver antenna has a pair of cartridges supported by a pan/tilt mount. A lens at forward end of a cartridge interfaces light between an end of a light relay element retained by an axial deflection device and free space. The forward end of a cartridge also terminates first ends of actuator wires that are mutually rotationally displaced a distance of 90° from one another in a plane normal to a boresight axis of the antenna. The actuator wires have second wire terminations at the axial deflection device which are mutually rotationally displaced a distance of 90° from one another in a plane passing through the axial deflection device normal to the boresight axis. Heating currents are supplied to the actuator wires, causing their lengths to change, thereby flexing the axial deflection device and light relay element off boresight.
摘要:
Disclosed are a system and method for providing wireless access to a network, such as the internet. The disclosed technique takes into account the inherent asymmetric and bursty characteristics of internet communication to obtain more efficiency in the communication between a user and an access provider. In doing so, the invention provides a technique that can be used to economically provide wireless access to the internet at data rates that are comparable to what a user would receive over ISDN lines.
摘要:
A Personal Computer Memory Card International Association (PCMCIA) card is disclosed. The PCMCIA card may include a cryptographic module, a communications interface, and a processor. The cryptographic module may perform Type 1 encryption of data received from a computer into which the card is inserted. The cryptographic module may support High Assurance Internet Protocol Encryption (HAIPE). The communications interface may provide connectivity to a network adapter. The communications interface may include a Universal Serial Bus (USB) interface. The processor may detect whether a network adapter is coupled to the communications interface, identify a device driver that corresponds to the network adapter, and employ the device driver to provide operative communication between the cryptographic module and the network adapter. The PCMCIA card may contain a datastore that maintains a plurality device drivers. For example, the plurality of device drivers support any one of IEEE 802.x, Ethernet, V.90, or RS-232 network protocols.
摘要:
A Personal Computer Memory Card International Association (PCMCIA) card is disclosed. The PCMCIA card may include a cryptographic module, a communications interface, and a processor. The cryptographic module may perform Type 1 encryption of data received from a computer into which the card is inserted. The cryptographic module may support High Assurance Internet Protocol Encryption (HAIPE). The communications interface may provide connectivity to a network adapter. The communications interface may include a Universal Serial Bus (USB) interface. The processor may detect whether a network adapter is coupled to the communications interface, identify a device driver that corresponds to the network adapter, and employ the device driver to provide operative communication between the cryptographic module and the network adapter. The PCMCIA card may contain a datastore that maintains a plurality device drivers. For example, the plurality of device drivers support any one of IEEE 802.x, Ethernet, V.90, or RS-232 network protocols.
摘要:
A magnetic signature minesweeping device (10) comprising a water driven turbine power generator (12) and a superconducting material magnet (14), wherein the turbine power generator is arranged, in use, to supply a driving current for the superconducting material magnet (14) when the minesweeping device is towed through the water. In a further embodiment a control unit (24) is arranged, in use, to control the magnetic output of the superconducting magnet (14) and the power output of the turbine power generator (12). Further more a method of minesweeping using the device (10), and an array of the devices (10) is disclosed.
摘要:
A durable colored article having fluorescent properties comprises a substantially solventless polyvinyl chloride matrix, a thioxanthene fluorescent dye, and a secondary or tertiary hindered amine light stabilizer having a molecular weight less than about 1000 grams/mole. The invention has the advantage in that it provides a flexible polyvinyl chloride film that exhibits durable fluorescent colors.
摘要:
An interface between a communication modem and a hand-held, battery-operated information collection device, such as a blood glucose meter comprises a support cradle into which blood glucose meter is placed. A mechanical translation unit within the cradle then automatically rotates a cam-driven, pivotable swing arm on which an electrical connector to modem memory is mounted. The swing arm follows a spiral groove in the cam, so as to fully insert the electrical connector into the data port receptacle of the meter. After data has been downloaded from the meter into modem memory, the mechanical translation unit causes reverse rotation of the cam, so as to retract the electrical connector out of the data port receptacle, whereupon the meter may be removed by the user.