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Wireless power transmission network and wireless power transmission method

The present invention relates to a wireless power transmission network and to a wireless power transmission method. In the wireless power transmission method according to one aspect of the present invention, a base station, which wirelessly transmits power using a magnetic field, performs in-band communication through the magnetic field used for wireless power transmission in order to determine whether an electronic device receiving power is in a charging area or in a communication area, and transmits wireless power accordingly.
Owner:INTELLECTUAL DISCOVERY CO LTD

Peer-to-peer file download system for IPTV network

InactiveUS20080022012A1Maintain accuracy , security and accountabilityIncrease in sizeMultiple digital computer combinationsTransmissionClient-sideData file
In an IPTV or other network, a server terminal is interconnected with a number of client / peer terminals. For peer-to-peer file downloads, a data file having multimedia content (e.g., a television show) is split into a number of portions for distribution among the peer terminals. The size of each file portion increases according to the chronological order of the multimedia content, such that the first data file portion (containing the beginning of the content) is the smallest, and the last portion (containing the end of the content) is the largest. Having been provided with their network locations, a terminal obtains the file portions in either a sequential mode, where the file portions are obtained in correspondence to the sequential or chronological order of the multimedia content, or a random mode, where the file portions are obtained irrespective of the chronological order of the multimedia content.
Owner:LUCENT TECH INC

Instrument for electrosurgical tissue treatment

Systems and methods are provided for applying a high frequency voltage in the presence of an electrically conductive fluid to create a relatively low-temperature plasma for ablation of tissue adjacent to, or in contact with, the plasma. In one embodiment, an electrosurgical probe or catheter is positioned adjacent the target site so that one or more active electrode(s) are brought into contact with, or close proximity to, a target tissue in the presence of electrically conductive fluid. High frequency voltage is then applied between the active electrode(s) and one or more return electrode(s) to non-thermally generate a plasma adjacent to the active electrode(s), and to volumetrically remove or ablate at least a portion of the target tissue. The high frequency voltage generates electric fields around the active electrode(s) with sufficient energy to ionize the conductive fluid adjacent to the active electrode(s). Within the ionized gas or plasma, free electrons are accelerated, and electron-atoms collisions liberate more electrons, and the process cascades until the plasma contains sufficient energy to break apart the tissue molecules, causing molecular dissociation and ablation of the target tissue.
Owner:ARTHROCARE

Dynamizable orthopedic implants and their use in treating bone defects

The present invention generally relates to bone fixation devices and methods for promoting arthrodesis of bone defects. The bone fixation devices can provide sufficient support to the bone defect while allowing bone ingrowth and minimizing the risk to stress shield and / or pseudo-arthrodesis. The bone fixation devices include a degradable component that allows the device to gradually transfer the load from the supporting member to the growing bone structure in vivo.
Owner:SDGI HLDG

Electric arc welder using high frequency pulses

InactiveUS6515259B1Efficiently transferredMaximized efficiency and heatArc welding apparatusWave shapeElectric arc
An electric arc welder including a high speed switching power supply with a controller for creating high frequency current pulses through the gap between a workpiece and a welding wire advancing toward the workpiece, where the pulses and a background current defining a series of weld cycles. A wave shape generator defines the shape of the pulses and the background current including a controlled ramp up and / or ramp down in each of said cycles and a circuit to change the shapes of the pulses and / or background current in a repeating pattern in each of the weld cycles. The shape change in a cycle can be between first and second shapes or by a rhythmic AC modulation.
Owner:LINCOLN GLOBAL INC
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