Abstract: Simultaneous bi-directional communication of digital signals across an isolation barrier, such as a pulse transformer, is presented. On the pimary side of the barrier, a voltage driver drives a digital transmit data stream, that is encoded to be DC balanced in both current and voltage domains, across the barrier. On the secondary side, an impedance switching circuit modulates the load impedance of the voltage driver in accordance with a digital receive data stream. The modulation of the load impedance is detected on the primary side by sampling the sourced current of the voltage driver to extract the digital receive data. The voltage driver may be sampled at predictable points in time when the current it is sourcing is primarily dependent upon the load impedance of the secondary side. Alternatively, the magnetizing inductance current of the isolation barrier can be subtracted from the current sourced due to the known transmit data.

Abstract: Embodiments of the invention provide a framework for computer application to utilize data structures by loading externally-defined container data structures, and building in-memory representation of data structures at runtime. Contrary to existing applications, computer applications implementing the invention may utilize data structures for which the architecture is not embedded within the application code. Embodiments of the invention provide mechanisms by which applications (or components thereof) implementing the invention may access and modify data structures and their individual elements.

Abstract: A method for enabling secure communication over a network is described. This method employs a public/private key encryption/decryption algorithm through a secure communication device. The communication device is designated as capable of secure communication when it is equipped with the necessary electronics to perform the encryption and decryption, as one embodiment is described herein. The encryption/decryption method utilized by embodiments of the invention can be incorporated into the modification of, conventional communication terminals such as a telephone. Such modifications are comprised of, but not limited to, the addition of components (refer to FIG. 1) capable of converting voice signals to digital signals and vice versa. The communication terminal may also include, for example, a specially designed ASIC processor and/or software configured to encrypt and decrypt data. In one embodiment of the invention measures are taken to limit accessibility to the keys utilized to perform encryption/decryption.

Abstract: A method and apparatus for obtaining power computation parameters is presented. Accurate computation of power requires multiplying voltage and current at the same instant of time and integrating the results over time. The present invention provides a method of using a single Analog to Digital Converter to convert both voltage and current for all the phases of any electrical system and then digitally compensating for the phase error caused by the non-simultaneous sampling of the current and voltage signals. The compensating filter could be implemented as a simple interpolator, an all-pass filter, or a combination of both. A single multiplexer is used to select which signal is processed by the Analog to Digital Converter. By scheduling and converting the voltage and analog signals one at a time, potential for crosstalk is significantly reduced, power requirement is reduced, and die size requirement is reduced.

Abstract: An embodiment of the invention comprises a method and system for testing a networking system's performance. The invention solves a problem related to upgrading system components associated with different steps of the testing process for networking systems. Systems embodying the invention comprise a processing apparatus and a testing apparatus, each of which contains a data bus. The two data buses are linked together through a bi-directional communication bridge that allows the testing apparatus and the processing apparatus to transparently communicate such that the bridged data buses behave as through they exist on a same local bus. The architecture provided by the invention allows for the upgrading of a processing apparatus for enhanced data processing performance without changing existing adequate testing devices.

Abstract: An unshielded twisted pair (UTP) cable having a common electrical length among a plurality of twisted pairs for carrying analog signals and a different lay length and lay direction to an additional twisted pair for carrying digital signals is disclosed. The twisted pairs for carrying the analog signals may be bundled together, with the twisted pair for carrying the digital signal placed alongside the bundled pairs during the final jacketing process, during which the outer insulator is formed around all of the pairs. The bundled pairs may be used for the transmission of analog video signals (e.g., R, G and B), with the remaining pair used for transmission of digital control or digital audio signals.

Abstract: In one embodiment, the invention comprises a system for regenerating electronic mail when a certain event transpires. If, for instance, a server program has previously sent the user an electronic mail message, that electronic mail message may be regenerated by an embodiment of the invention and retransmitted to the user or provided to support personnel upon request. Thus, the invention provides a mechanism for regenerating previously generated messages.

Abstract: An electro acoustic device and related method for increasing the production capacity of wells that contains oil, gas and/or water is disclosed. The electro acoustic device is submerged in the well producing zone, and includes an electric generator, one or more electro acoustic transducers, and one or more wave guide systems (sonotrodes) that include radiators which transmit vibrations into the medium under treatment. The electro acoustic device produces vibrations that stimulate the occurrence of mass transfer processes within the well. According to one or more embodiments, shear vibrations are produced in the well bore region due to the phase displacement of mechanical vibrations produced along the axis of the well, achieving alternate tension and pressure due to the superposition of longitudinal and shear waves.

Abstract: A method and apparatus for populating a form with data is described. In one embodiment of the invention, a form is displayed to the user via the target application. Each form has one or more data receptacles. The data receptacles of a form are filled with data when the user executes a data population command. The form completion program executes the data population command when a graphical representation of a particular data set is placed over the form. Each data set is stored in an encrypted manner and is accessible to users who enter the appropriate information into an authentication mechanism. To populate a form with data the form completion program obtains an image of the form and then searches for a template file that resembles the form image to within a certain threshold. The template files are typically stored on the computer hosting the target application in a template directory that is arranged according to a predefined structure.

Abstract: An electro acoustic device and related method increase production capacity of wells that contain oil, gas and/or water. The electro acoustic device produces vibrations stimulating occurrences of mass transfer processes within the well. The resultant acoustic flow generated in porous media, produced by superposition of longitudinal and shear waves, is developed over a characteristic frequency threshold value specific to water, normal oil and heavy oil, with an acoustic energy density capable of establishing higher fluidity zones in the porous media, promoting mobility and recovery of desired fluid and formation damage reduction in a wellbore.

Abstract: In the oil-producing industry, an apparatus can be used to increase the yield of oil wells developed by conventional methods during production of high viscosity oils. Use of the apparatus results in an increase in the permeability of a reservoir and a reduction in the viscosity of oil, added to an increase in environmental safety by avoiding use of chemical reagents and steam generators. The apparatus applies a high power ultrasonic field in the well bottom zone that reduces viscosity of oil, also heating the well bottom zone. The apparatus comprises a surface ultrasonic generator and at least one ultrasonic magnetostrictive radiator placed at the end of oil well tubing, using high frequency currents that warm the tubing and maintain the viscosity of oil during transport to the surface.

Abstract: A apparatus and apparatus for compensating for video insertion loss due to transmission over long twisted pair cable lines is presented. Transmission of video over twisted pair cable is advantageous because of its superior cost advantage over coaxial cable. However, twisted pair cables have significant loss characteristics at the higher frequencies (i.e., broadband) compared to coaxial cables. At a transmitter station, the video signal is amplified in the high frequency region for possible skin effect losses thereby brute forcing the high frequency components to the receiving station. At the receiver station, the video signal is further compensated for diffusion line and skin effect losses. The total skin effect compensation applied in both the transmitter and receiver stations is such that the square root of frequency characteristics of skin effect losses is compensated for.

Abstract: An unshielded twisted pair (UTP) cable having a common electrical length among twisted pairs that carry analog signals and a different lay length and lay direction to a twisted pair that carries digital signal to minimize cross-talk from the digital signal onto the analog signals is presented. A non-conductive filler provides a central core about which the twisted pairs are wound during the bundling process and thus ensures that a minimum distance (i.e., the diameter of the core) is maintained between non-adjacent pairs of conductors for the length of the cable.

Abstract: The invention is a method and apparatus for improving image-processing applications. Embodiments of the invention provide methods for preserving computation results and offer intermediary computation steps to allow the processing of images at any location to take advantage of previously processed image areas. The preferred embodiment offers a method for building a median filter that significantly improves the processing speed over basic techniques. By building a histogram hierarchy, image data statistics are added and subtracted using a multiplicity of histograms from the histogram hierarchy, where each histogram describes an image area. Furthermore, a histogram hierarchy is built using multiple layers, each layer defining a level of statistical resolution.

Abstract: A method and apparatus for driving light emitting polymer (PolyLED) displays is provided. Because PolyLED displays exhibit high capacitance characteristics, pre-charge current is injected to bring the diode up to near its operating current prior to enabling the diode. Thus, time and power is not wasted charging and discharging the high capacitance that is inherent in PolyLED displays and life of the diodes are prolonged because the diodes are not required to swing the full voltage range during each cycle. In addition, since older diodes need more voltage to produce the same current thus the same light intensity as newer diodes, an embodiment of the present invention adds an adaptive power generation system that actively monitors and adjusts power as necessary in order to generate constant amount of light (i.e., constant current) from all the diodes in the display.

Abstract: The present invention comprises a method and apparatus for manipulating screen objects utilizing multiband regions of influence. Positioning a reference point of an object within a particular band invokes a particular functionality or operation related to that band. In one embodiment, three types of functionality are provided. Moving a reference datum (for example, a line representing an edge or a user defined reference point) of an object A into a first band of an object B places object A under the influence of object B's gravity, causing object A to be pulled into precise alignment with object B. Moving the reference point of object A from the first band into a second band turns off object B's gravity, allowing object A to be freely moved to any arbitrary position near the object B. Moving the reference point of the object A to a position outside all bands causes object B's gravity function to be turned back on.