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Combined x-ray and optical tomographic imaging system

ActiveUS20070238957A1Accurate functional informationAccurate informationDiagnostics using lightSensorsPhysicsImage resolution
The invention relates to a combined x-ray and optical (light-based) tomographic imaging system that provides functional information at greater resolution than can be achieved by optical tomography alone. The system is configured with one or more x-ray sources, x-ray detectors, light sources, and light detectors arranged on a gantry which rotates about an imaging chamber containing the object to be imaged. The system thereby allows both x-ray radiation and light to be directed into the object at multiple locations. Processing methods of the invention go beyond simple co-registration of images obtained from two or more imaging techniques. Both x-ray data and light data are used together in optical tomographic reconstruction to create the tomographic image, thereby allowing a more accurate and / or higher resolution final image.
Owner:VISEN MEDICAL INC

High transparency integrated enclosure touch screen assembly for a portable hand held device

An integrated enclosure/touch screen assembly. A touch screen assembly consisting of a display mechanism and optical sensor mechanism are enclosed within a single piece cover. The optical sensor mechanism consists of lens structure and optical sensor couple to the lens structure. The single piece cover includes a transparent top surface and the lens structure is embedded within the transparent top surface. The transparent top surface of the single piece cover provides an enclosure that is both dust free and waterproof.
The lens structure of the single piece cover functions by columnating light across the transparent surface. The optical touch sensor is coupled to the lens structure to register contact with the transparent surface via the lens structure by detecting disturbances in the columnated light. In one embodiment, the single piece cover is constructed by embedding the lens structure directly into the transparent surface. This process forms the single piece cover and also may be used to provide various shapes for the outer edges of the cover. The single piece cover eliminates exposed seams of the touch screen assembly. Additionally, the transparent surface is disposed directly above the display without any intervening layers, thereby improving the transmission of light to the display.
Owner:QUALCOMM INC

Closed-loop signalling method for controlling multiple transmit beams and correspondingly adapted transceiver devices

A closed-loop signalling method controls multiple transmit beams. The method also includes transmitting a plurality of beams from a first transceiver via a plurality of transmission channels to a second transceiver, evaluating, at the second transceiver, characteristics of the plurality of transmitted beams received at the second transceiver. The method also includes deriving, at the second transceiver, beamforming information for being fed back from the second transceiver to the first transceiver based on the evaluated characteristics. The beamforming information is usable for controlling, at the first transceiver, the transmitting of the plurality of beams. The method also includes selecting, at the second transceiver, at least one set of beamforming information for being fed back from the second transceiver via a feedback path to the first transceiver. The method also includes calculating, at the first transceiver, additional beamforming information which was not contained in the feedback path, based on the beamforming information being fed back.
Owner:NOKIA TECHNOLOGLES OY

Enhancement of the channel propagation matrix order and rank for a wireless channel

Enhancement of wireless Channel Order and rank (ECHO) systems and ECHO repeater devices for enhancement of a wireless propagation channel for point to point or point to multipoint radio configurations are disclosed. The enhancement may be used for MIMO communications channels. Aspects support a richer multipath environment to increase the rank of the channel propagation matrix and / or to increase the magnitude of the coefficients of the propagation matrix between two or more radios. Such enhancement is applicable to backhaul radios in terms of increased range or in the number of supportable information streams. The installation, provisioning, optimization, control, monitoring, and adaptation of such devices within a network of backhaul radios is also disclosed. Wireless links and control between IBR and ECHO devices, and between ECHO devices and other ECHO devices, are also disclosed.
Owner:COMS IP HLDG LLC

High-Efficiency Vehicular Transmission

A high-efficiency vehicular transmission is provided. The transmission includes a transmission housing, a set of torque delivery elements which include first and second elements supported for rotation within the housing and an electric motor for changing angular velocity of at least one of the elements in response to an electrical signal during a shift to obtain a desired transmission ratio. At least one non-friction controllable coupling assembly has a coupling state for coupling the first element to either the second element or the housing and an uncoupling state for uncoupling the first element from either the second element or the housing, respectively. The at least one coupling assembly is non-hydraulically controlled to change state to maintain the desired transmission ratio.
Owner:MEANS IND INC

Fused silica having high internal transmission and low birefringence

InactiveUS20040162211A1Increase transmissionLow absolute maximum birefringencePhotomechanical exposure apparatusMicrolithography exposure apparatusTransmittancePolymer chemistry
Fused silica members having high internal transmission and low birefringence are disclosed. Methods of making such fused silica members are also disclosed. According to the present invention, fused silica members having an internal transmission equal to or greater than 99.65% / cm at 193 nm and having an absolute maximum birefringence along the use axis of less than or equal to 0.75 nm / cm are provided.
Owner:DOMEY JEFFREY J +7
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