Abstract: A method of navigation guidance includes providing a communications node (104, 106), and a remote communications node (108). The remote communications node (108) requests a navigation route (201, 301) from communications node (102, 104, 106). The navigation route (201, 301) is from a location (202) to a destination location (204). The navigation route (201, 301) is transmitted to remote communications node (108), where the navigation route (201, 301) includes a plurality of route segments (207, 210, 211, 212, 213, 254) based on location (202). The plurality of route segments include a set of multiple route threads from location (202) to destination location (204).

Abstract: A method of navigation guidance includes providing a communications node (104, 106), and a remote communications node (108). The remote communications node (108) requests a navigation route (201, 301) from communications node (102, 104, 106). The navigation route (201, 301) is from a location (202) to a destination location (204). The navigation route (201, 301) is transmitted to remote communications node (108), where the navigation route (201, 301) includes a plurality of route segments (207, 210, 211, 212, 213, 254) based on location (202). The plurality of route segments include a set of multiple route threads from location (202) to destination location (204).

Abstract: An internet radio for portable applications and uses such as in an automobile enables providing navigational services to be provided to a wireless communication device, and comprises the steps of providing a user interface in said wireless communication device for providing navigational services to a user; downloading updated navigational data from a remote network; and providing navigational services based upon said updated navigational data. Customized information is also communicated to the radio such as stock quotes, travel information, advertising, and e-mail. Onboard global positioning allows for channel updating by location, traffic information, geographic advertising and available similar content.

Abstract: A quadrifilar helix antenna of the present invention is used with a wireless device to transmit and receive signals. The antenna includes a plurality of helical antenna elements and an impedance transformer electrically connected to the antenna elements and connectable to the wireless device. The impedance transformer may be comprised of either a planar transmission line ¼ wave impedance transformer or a pi-network impedance transformer. The antenna may also be comprised of dual band quadrifilar helix antenna for transmitting or receiving two different frequency bands.

Abstract: The present invention, in one form, is an imaging system which synchronizes the emission of x-rays and the collection of data to a heart cycle to provide improved image quality. In one embodiment, the imaging system utilizes a synchronization unit to determine a selected heart period and to control generation of x-ray beams during the selected period. As the x-ray beams are emitted toward a detector, data is collected for a view angle. As the heart continues to cycle, data for a series of view angles is collected so that an image of the heart during the selected period is generated.

Abstract: The present invention, in one form, includes methods and apparatus for reducing the x-ray dosage to a patient in a medical imaging system. In accordance with one embodiment of the present invention, a switching unit, or circuit, is coupled to a x-ray tube and a power supply to control the emission of x-ray beams from the x-ray tube. The switching unit is configured to alter a voltage and current signal applied to the x-ray tube control grid so that the magnitude of the x-ray beams is modified, or altered. By utilizing the switching unit the patient x-ray dosage is reduced and the magnitude of the x-ray beams may be configured to match the requirements of the application.

Abstract: The present invention, in one form, is an imaging system which includes a verification system for verifying the proper connection of an interconnection cable. In accordance with one embodiment of the verification system, a verification circuit verifies operation of the interconnection cable by altering the patterns supplied from an EKG subsystem. More specifically, the conduction of interconnection cable is verified prior to, during and after scanning the patient by transmitting patterns received from the EKG subsystem through the verification circuit back to the EKG subsystem. If the patterns match the expected patterns, a verification signal is generated indicating proper cable connection.

Abstract: An antenna positioner is provided for use in an anechoic chamber to enable the radiation pattern of an antenna under test to be measured. A vertically disposed and selectively rotatable azimuth rotator pedestal is positioned in the anechoic chamber and a support is mounted on the pedestal for rotation therewith. A roll-axis shaft is mounted on the support for rotatably supporting the antenna under test. The roll-axis shaft rotator is positioned outside the anechoic chamber and has a horizontally disposed and horizontally movable connecting rod which is selectively movable into the chamber for connection to the roll-axis shaft to incrementally rotate the roll-axis shaft and the antenna under test.

Abstract: A quadrifilar helix antenna of the present invention is used with a wireless device to transmit and receive signals. The antenna includes a plurality of helical antenna elements and an impedance transformer electrically connected to the antenna elements and connectable to the wireless device. The impedance transformer may be comprised of either a planar transmission line 1/4 wave impedance transformer or a pi-network impedance transformer. The antenna may also be comprised of dual band quadrifilar helix antenna for transmitting or receiving two different frequency bands.

Abstract: A multi-band antenna comprising a device which is capable of functioning during at least a lower frequency band of operation and at least a higher frequency band of operation. The antenna comprises an elongated radiating element having a helical radiating element connected to one end thereof with one end of the helical radiating element being received by a non-conductive insulator. An outer conductive shell embraces the non-conductive insulator and at least partially encloses a portion of the helical radiating element. The straight radiating element acts as the antenna radiator during both the high and low frequency bands of operation.

Abstract: A multi-band antenna comprising a device which is capable of functioning during at least a lower frequency band of operation and at least a higher frequency band of operation. The antenna comprises an elongated radiating element having a helical radiating element connected to one end thereof with one end of the helical radiating element being received by a non-conductive insulator. An outer conductive shell embraces the non-conductive insulator and at least partially encloses a portion of the helical radiating element. The straight radiating element acts as the antenna radiator during both the high and low frequency bands of operation.

Abstract: Novel polypeptide inhibitors of cytoplasmic protein nuclear translocation are disclosed. The inhibitors are comprised of a signal sequence and at least two nuclear localization sequences. The polypeptides are useful as immunosuppression, antiviral and antitumor agents.

Abstract: An electric motor for an x-ray tube of a medical imaging system is described herein. The electric motor includes a stator and a substantially cylindrical rotor. The stator includes stator winding slots and stator windings injected into the stator winding slots. The stator also has a stator bore. The rotor is rotatably mounted within a stator bore so that the rotor is coaxial with the stator bore. The rotor includes a rotor core, a plurality of rotor bars, and end rings. The rotor bars are at located in rotor bar openings at a periphery of the rotor. At least one of the rotor bars has a different cross-sectional area than one of the other rotor bars.

Abstract: A method is used for interfacing dissimilar materials in an X-ray tube. The X-ray tube includes a rotor assembly to distribute heat generated in the X-ray tube. The X-ray tube is sealed within a glass material which has a first expansion coefficient. An interface is provided between the rotor assembly and the glass material to absorb temperature coefficient stresses. Preferably, the glass material is Borosilicate and the interface comprises a metal material and a ceramic material. The ceramic material has a second expansion coefficient that closely matches the first expansion coefficient. The metal material is preferably Kovar, and the ceramic material is preferably Mullite. Temperature coefficient stresses are then absorbed within the ceramic and metal structure.

Abstract: An overhead arcade-like light display is disclosed. The display comprises a canopy of an open framework with elongated linear raceways containing electrical wiring and supporting thousands of bulbs gathered in groups of four identified herein as pixels. Pixels are closely and regularly spaced. The raceways are linearly positioned running the length of said arcade and placed parallel to one another to position themselves to become the interior arcuate frame structure. Each pixel is covered with a light diffusing dome and the individual bulbs are of a different color so that colors, shades, tones and hues of a thousand varieties may be obtained from each domed pixel. A display having in excess of one million bulbs with minimal wind resistance is readily constructible.

Abstract: An induction motor rotor particularly for x-ray tube applications comprises a series of hollow cylinders fitting concentrically on each other and on a motor shaft. The first cylinder is a highly heat resistant and electrically insulating material. The next cylinder is a highly magnetic material cylinder fitting on the first cylinder. The next and outermost cylinder is an electrically conductive material providing the armature conductor of the induction motor rotor.

Abstract: A rotating X-ray tube comprises a cathode assembly including a cathode and a cathode current supply, and an anode assembly having an anode current controlled via the cathode current supply. A filament for emitting electrons is separated from the cathode. A cathode cup supports the filament and provides electron field shaping assistance. The X-ray tube further comprises a distributed capacitance for affecting the cathode cup electron field, and an insulator leakage resistance. The cathode cup is allowed to float on the insulator leakage resistance, whereby voltage associated with the distributed capacitance and the leakage resistance is allowed to remain relatively constant.

Abstract: Peptides which bind to selected ligands are identified by screening peptide libraries which encode a random or controlled collection of amino acid sequences. A rapid and convenient iterative strategy is employed to determine the peptide sequences which bind to the ligand of interest. The peptides so identified can be used as diagnostic or therapeutic agents, or in the design of lead compounds for such uses.

Abstract: Peptides immunoreactive with antibodies to native proteins, and which have at least two cysteine residues that contribute to mimicking an epitope of the protein, are prepared with the cysteine thiol groups protected. When deprotected, the peptides have enhanced immunoreactivity. The peptides are particularly useful for detecting antibodies or antigens associated with retroviruses, including the clinically important lymphotropic retroviruses HIV-1, HIV-2, HTLV-I, and HTLV-II.

Abstract: A supply for a high bias voltage in an X-ray imaging system has an inverter and a voltage multiplier that produce an alternating output voltage in response to control signals. A voltage sensor produces a signal indicating a magnitude of the output voltage. A circuit determines a difference between the sensor signal and a reference signal that specifies a desired magnitude for the output voltage and that difference is integrated to produce an error signal. The error signal preferably is summed with a precondition signal that is an approximation of a nominal value for the signal sum and the summation producing a resultant signal. Another summation device arithmetically combines the resultant signal and the sensor signal with a signal corresponding to a one-hundred percent duty cycle of the inverter operation in order to produce a duty cycle command.