Carnegie Mellon University

Eastman-kodak Company

Gm Global Technolgoy Operations, Inc.

Caterpillar Inc.

Seagate Technology Incorporated

Disney Enterprises, Inc.

Daniel D Stancil

Tuviah Ehud Schlesinger

James A Bain

Amit Vasant Itagi

Tuviah E Schlesinger

Christopher P Diehl

Tim Rausch

Bernard J Bennington

David B Johnson

Fan Bai

Jose M Mir

Adam J Gudat

Mool Chand Gupta

Darmindra D Arumugam

William Messner

Joshua D Griffin

Matthew Trotter

Joseph Fernandez

David Ricketts

Jinhui Zhai

Embodiments of the invention broadly contemplate systems, methods, apparatuses and program products that provide position tracking using a simple, low frequency oscillator that is attached to an object to be tracked, and one or more receiving stations that are placed around the area in which the object moves. Embodiments of the invention enable position tracking of the object using light weight equipment which minimally impacts the object's natural state.

Systems and methods for position tracking using magnetoquasistatic fields

A system and method for providing dynamic channel equalization in V2V and V2I communications systems. The method includes separating the channel bandwidth of a message into a plurality of subcarriers having different subcarrier frequencies, where the subcarriers include data subcarriers and pilot subcarriers. The method demodulates the message in the receiver to extract symbols from the message and determines channel estimation frequency responses using a least-squares estimation process and the extracted symbols for the pilot subcarriers. The channel estimation frequency responses of either the pilot subcarriers, the pilot subcarriers and some data subcarriers, or the pilot subcarriers and all data subcarriers are used to generate updated channel estimation frequency responses, and a new channel estimation frequency response is generated for each extracted signal using a previous channel estimation frequency response and the updated channel estimation frequency response. The extracted symbols are equalized using the new channel estimation frequency response.

Spectral-temporal averaging for IEEE 802.11p dynamic channel equalization

An apparatus for producing an optical spot on the order of 25 nm in a recording media. The apparatus includes an optical transducer comprising a waveguide which defines an aperture adjacent to an air bearing surface of the transducer adjacent a recording media. The transducer includes a protrusion extending beyond the plane of the air bearing surface extending toward the recording media.

Apparatus for excitation, enhancement, and confinement of surface electromagnetic waves for confined optical power delivery

A device for writing data to a recording medium and a method for fabricating the device is presented. According to one embodiment, the device includes an electrical conductor having a cross-track portion, wherein the cross-track portion includes first and second opposing surfaces, and wherein the cross-track portion defines an aperture extending from the first surface to the second surface. The device also includes a dielectric portion disposed in the aperture such that the dielectric portion defines a ridge waveguide having a lowest-order mode cut-off frequency that is less than the frequency of incident optical energy used to heat the recording medium.

Device with waveguide defined by dielectric in aperture of cross-track portion of electrical conductor for writing data to a recording medium

A system for transmitting wireless communications within ductwork. The system includes a plurality of transmitter devices for introducing electromagnetic radiation into the ductwork such that the ductwork acts as a waveguide for the electromagnetic radiation, said transmitter devices comprising a transmitter array, wherein the transmitter devices are configured to introduce the electromagnetic radiation using multiple propagation modes. The system also includes a plurality of receiver devices for detecting the electromagnetic radiation within the ductwork, said receiver devices comprising a receiver array.

System and method for increasing the channel capacity of HVAC ducts for wireless communications in buildings

The present invention includes a method for dynamically updating a propagation model of communication signals in an area being subjected to earthworking operations which alter the topology of the terrain in which the method comprises the steps of dynamically updating a terrain map of the area as a function of the earthworking operations and dynamically updating the propagation model in response to updating the terrain map. An apparatus for dynamically updating a propagation model of communication signals in an area being subjected to a mobile geography-altering machine capable of altering the topology of the terrain, the apparatus comprises circuitry for storing a terrain map representative of the terrain prior to the terrain being subjected to alteration by the mobile geography-altering machine, circuitry for dynamically updating the terrain map as the terrain is being subjected to alteration by the mobile geography-altering machine, and circuitry for dynamically updating the propagation model in response to updating the terrain map.

Method and apparatus for dynamically updating representation of a work site and a propagation model

An apparatus and method for communicating between a first communication node and a second communication node in an area having a plurality of communication nodes is disclosed which comprises generating a propagation model of signals from selected communication nodes in the area. The communication nodes may be fixed or mobile. The propagation model is based on an environmental map that includes the topography of the terrain and structures in the area. The propagation model is generated at selected intervals to provide updated information for predicting the quality of communication at a location at a future time.

Method and apparatus for incorporating environmental information for mobile communications

A lens for focusing collimated light. The lens includes a single, optically transmissive material having an aspherical focusing surface and a second surface, such that collimated light incident on the aspherical focusing surface is focused in a near-field region of the second surface.

Solid immersion lenses for focusing collimated light in the near-field region

A device that includes a projection element positioned between first and second beam scanners configured in series and a two-dimensional display plane. An apparatus for controlling the first and second beam scanners is provided so that the angle of incidence and the point of incidence of a beam output from the series connected beam scanners onto the projection element are controlled. In that manner, each point on the projection element can be mapped to a line in the display plane. A method of mapping a point in the projection element to a line in the display plane is also disclosed.

Two-dimensional beam scanner

A system for measuring a size of a focused spot of an optical energy beam. The system includes a grating, a beam scanner oriented between a source of the optical energy beam and the grating, and a detector oriented to sense a diffraction pattern of the grating.

System and method for measuring the size of a focused optical spot

The present invention is directed to a system for using the ductwork of a building for transmitting electromagnetic radiation. The system includes a device for introducing electromagnetic radiation into the ductwork such that the ductwork acts as a waveguide for the electromagnetic radiation. The system also includes a bi-directional coupler positioned to re-radiate the electromagnetic radiation around an obstacle. The system further includes a device for enabling the electromagnetic radiation to propagate beyond the ductwork. The present invention is also directed to a method for transmitting electromagnetic radiation using the ductwork of a building and a method for designing a system for transmitting electromagnetic radiation in the ductwork of a building.

Wireless signal distribution in a building HVAC system

The present invention is directed to a system for using the ductwork of a building for transmitting electromagnetic radiation. The system includes a device for introducing electromagnetic radiation into the ductwork such that the ductwork acts as a waveguide for the electromagnetic radiation. The system also includes a device for enabling the electromagnetic radiation to propagate beyond the ductwork. The present invention is also directed to a method for transmitting electromagnetic radiation using the ductwork of a building and a method for designing a system for transmitting electromagnetic radiation in the ductwork of a building.

An integrated frequency conversion and scanner for converting the frequency of an input light beam and deflecting the converted light beam through an electronically controlled angle is disclosed. This structure includes an electrooptic crystal including a region formed for converting the frequency of the input light to a higher frequency; and a field changing structure associated with selected regions of the crystal arranged so that an electric field is created at least partially within the crystal to change its refractive index to thereby deflect the converted light beam through an electronically controlled angle.

Integrated frequency conversion and scanner

A scanning device having: (i) an electrooptic planar waveguide or bulk material capable of propagating light beams with minimum beam distortion, (ii) an electrooptic prism array defined on said electrooptic planar waveguide or bulk material, comprised of at least one pair of antiparallel-poled ferroelectric domain regions and, (iii) control means to apply a spatially uniform electric field throughout said electrooptic prism array using a pair of electrically-addressable continuous electrodes, so as to induce an electrically-controlled deflection to a light beam propagating through the device.

Growing community of inventors

Mars, PA, United States of America

Daniel D Stancil