Abstract: Provided is a method for evaluating spectrum utilization efficiency in a radio system sharing frequency. The method for evaluating spectrum utilization efficiency of a frequency sharing radio system in a radio environment having a first radio system using at least one specific frequency in an allocated frequency band and a second radio system sharing the frequency band allocated by the first radio system, includes calculating net coverage per unit area based on a design parameter on the first radio system and a design parameter on the second radio system; and evaluating spectrum utilization efficiency based on the calculated net coverage per unit area.
Type:
Grant
Filed:
July 30, 2008
Date of Patent:
August 2, 2011
Assignee:
Electronics and Telecommunications Research Institute
Abstract: A mixed-voltage input/output (I/O) buffer includes an output buffer circuit. The output buffer circuit includes an output stage circuit, a gate-tracking circuit and a floating N-well circuit. The output stage circuit includes stacked pull-up P-type transistors and stacked pull-down N-type transistors, in which a first P-type transistor of the stacked pull-up P-type transistors and a first N-type transistor of the stacked pull-down N-type transistors are coupled to an I/O pad. The gate-tracking circuit controls gate voltage of the first P-type transistor in accordance with a voltage of the I/O pad to prevent leakage current. The floating N-well circuit provides N-well voltages for an N-well of the first P-type transistor and an N-well of a second P-type transistor, controlling gate voltage of the first P-type transistor, of the gate-tracking circuit to prevent leakage current.
Type:
Grant
Filed:
October 21, 2008
Date of Patent:
July 26, 2011
Assignees:
Himax Technologies Limited, National Sun Yat-Sen University
Abstract: A wireless LAN includes two interfaces with a transmitter-receiver function and a channel controller. One of the two interfaces employs one communication channel to search for a communication channel being used by a destination communication unit. The channel controller determines a surrounding radio wave condition based on the communication channel obtained by the searching, and controls channel setting so that the respective communication channels of the two interfaces differ from each.
Abstract: A battery module and a charge/discharge method thereof are provided. The battery module comprises a cell, a charge/discharge circuit, a temperature sensing circuit and a charge/discharge speed controlling circuit. The charge/discharge circuit is coupled to the cell. The temperature sensing circuit further comprises a temperature coefficient (PTC) device used for sensing a temperature of the cell, so that the temperature sensing circuit outputs a first analog signal according to the temperature of the cell. The charge/discharge speed controlling circuit, according to the first analog signal, outputs a control signal to the charge/discharge circuit to adjust a charge/discharge speed of the cell.
Abstract: An image forming apparatus is supplied capable of adopting low price structure to obtain information that is stored in a storing section and is used for analyzing reason of failure/repair.
Abstract: Provided are a wafer level package in which a communication line can be readily formed between an internal device and the outside of the package, and a method of fabricating the wafer level package. The wafer level package includes a first substrate having a cavity in which a first internal device is disposed, an Input/Output (I/O) pad formed on the first substrate and electrically connected with the first internal device, a second substrate disposed over the first substrate and from which a part corresponding to the I/O pad is removed, and a solder bonding the first and second substrates. According to the wafer level package and the method of fabricating the same, upper and lower substrates are sawed to different cutting widths, or a hole is formed in the upper substrate, such that a communication line of an internal device can be readily formed without a via process which penetrates a substrate.
Type:
Grant
Filed:
September 11, 2008
Date of Patent:
July 26, 2011
Assignee:
Electronics and Telecommunications Research Institute
Inventors:
Jong Tae Moon, Yong Sung Eom, Min Ji Lee, Hyun Kyu Yu
Abstract: A method and device for automatically detecting heart valve damage for four heart valves are proposed. The automatic determination method makes use of three or more heart tone microphones to simultaneously record heart tones of a patient's heart, and then separates the heart tones into four heart tone signals of the aortic valve, the pulmonary valve, the tricuspid valve and the mitral valve of the heart based on the timing characteristics and related techniques. Next, these four heart tone signals are digitally processed into sampling signals. Subsequently, the convolution method is used to process the sampling signals for producing system transfer functions. Finally, the system transfer functions and the reference database are compared to verify and determine damage for the four heart valves. The automatic determination method can judge heart valve damage to enhance the quality and convenience of medical treatment.
Type:
Grant
Filed:
December 19, 2008
Date of Patent:
July 26, 2011
Assignee:
Industrial Technology Research Institute
Inventors:
Tsung-Ter Kuo, Mao-Shun Su, Yu-Kon Chou, Ming-Kaan Liang
Abstract: A paper output mechanism for an automatic document feeder, including: a seat; a connecting shaft, passed through the seat; and a paper feeding roller, placed around the connecting shaft, and including: a shaft portion; a roller portion, placed around the shaft portion; and adapted to convey a document, and an elastic element, placed around the shaft portion, and one end thereof being connected to the seat.
Abstract: A silicon light emitting diode capable of effectively utilizing light radiated toward the lateral side of a substrate by including a side reflecting mirror is provided. The silicon-based light emitting diode includes a p-type silicon substrate having a plurality of grooves, a light emitting diode layer formed on each of the grooves of the silicon substrate, the light emitting diode layer including an active layer, an n-type doped layer, and a transparent electrode layer, and a metal electrode including a lower metal electrode formed on the bottom surface of the p-type silicon substrate and an upper metal electrode formed on the top surface of the transparent electrode layer. The lateral surface of each of the grooves is separated from the light emitting diode layer and used as a reflecting mirror. The lateral surface is referred to as the side reflecting mirror.
Type:
Grant
Filed:
April 25, 2006
Date of Patent:
July 19, 2011
Assignee:
Electronics and Telecommunications Research Institute
Inventors:
Tae-Youb Kim, Nae-Man Park, Gun-Yong Sung, Jong-Heon Yang
Abstract: A vertical axis wind generator structure includes a tower, a windmill assembly, a bearing assembly, a lubrication assembly, and a generator. The windmill assembly is installed on the bearing assembly. The windmill assembly and the bearing assembly are rotatably sleeved on a shaft lever of the tower. The bearing assembly provides for thermal expansion compensation and axial and radial loading. The lubrication assembly supplies lubricating oil based on the operating conditions of the windmill assembly so as to prolong the lifespan and improve the electricity generation effect of the wind generator.
Type:
Grant
Filed:
January 21, 2009
Date of Patent:
July 19, 2011
Assignee:
Industrial Technology Research Institute
Abstract: The present invention provides an outer cover to secure a printhead-ink cartridge and can be used in a segregated printhead-ink cartridge which is modified from an all-in-one printhead-ink cartridge. The inner and outer mounting and matching dimensions of the outer cover fit the outer frame edge (2) of the printhead and the printhead rack. The outer cover is an integrated cartridge holder comprising functional parts including locking tabs (4a,4b), at least one outer cover operating handle (3), at least one printhead locking tab (7), at least one printhead operating handle (5), and at least one pressing rib (6). The outer cover ensures that the ink cartridge (8) is securely mounted in the frame of printhead (1) and that the printhead is accurately positioned in the printhead rack. When the ink is depleted only the ink cartridge inside the printhead needs to be replaced.
Abstract: A toner cartridge is detachably attached to an image forming apparatus and supplies toner to the image forming apparatus. The locking mechanism is positioned either at a locking position or at a non-locking position. Shortly after the toner cartridge has been attached to the image forming apparatus, the locking mechanism is at a non-locking position. When a user operates a driving member of the toner cartridge after the toner cartridge has been attached to the image forming apparatus, the operating lever engages the locking mechanism to cause the locking mechanism to move to a locking position. When the locking mechanism is at the locking position, the locking mechanism limits the driving member to move relative to the engagement portion, so that the toner cartridge is not allowed to be detached from the image forming apparatus.
Abstract: A noise-canceling device of a voice communication terminal that removes noise elements included in received voice signals. The device comprises: a digital filter array that exhibits filter qualities in response to a coefficient setting signal showing each supplied arrays of filter coefficients, and includes a first-stage filter that receives the received voice signals as well as multiple later-stage filters connected thereto in a straight line; a filter qualities designator that generates input designation that designates each qualities of the multiple digital filters forming the digital filters array; and a filter coefficient setter that retains multiple arrays of filter coefficients, extracts a filter coefficient array corresponding to the designation input from among the multiple filter coefficient arrays, and supplies to each multiple digital filters.
Abstract: An optical pulse time spreading device includes S optical pulse time spreading elements that spread input optical pulses into trains of (N×j) chip pulses, where j is an integer greater than zero, S is an integer greater than one, and N is an integer equal to or greater than S. In the chip pulse trains output by the n-th optical pulse time spreading element (n=1, 2, . . . , S), the light in successive chip pulses is shifted in phase by successive integer multiples of the quantity 2?{a+(n?1)/N}, where a is an arbitrary constant (0?a<1). In an optical code-division multiplexing system, this optical pulse time spreading device produces an autocorrelation wave with a high energy and a high signal-to-noise ratio.
Abstract: A system and method applicable to a vehicle for detecting a surrounding environment are provided. The system and method include installing primary and secondary display units in a vehicle; installing a plurality of detectors of various types around the vehicle; detecting obstacles around the vehicle using the plurality of different detectors; generating and outputting first detector data to be received by a primary control module; generating second detector data by integrating data to generate and transmit a primary warning message including vehicle positional information relative to the obstacle and a secondary warning message comprising obstacle positional information to the primary and secondary display units respectively for display. The system and method enable accurate detection of an obstacle via the warning messages and improved driving safety, using detectors with functions different from and complementary to one another.
Type:
Grant
Filed:
February 24, 2009
Date of Patent:
July 19, 2011
Assignee:
Industrial Technology Research Institute
Inventors:
Shan-Chuan Jeng, Hsieh-Tai Su, Long-Tai Chen, Chih-Che Lin
Abstract: In a semiconductor device provided with terminals for external connection, input terminals, power supply terminals and ground terminals are disposed close together on part of one edge portion of two opposing edge portions. Output terminals are disposed in the vicinity of both ends of the one edge portion and on another edge portion of the two edge portions. A ground wiring is routed from the other edge portion and connected to the ground terminals. In so doing, elemental devices connected to the input terminals are disposed close together, whereby needless gaps do not arise between the elemental devices. A ground potential is also supplied by the ground wiring.
Type:
Grant
Filed:
June 21, 2006
Date of Patent:
July 19, 2011
Assignees:
Fuji Electric Systems Co., Ltd., LG Electronics Inc.
Abstract: A semiconductor apparatus includes a semiconductor device to be mounted on a circuit board; a plurality of conductive posts electrically connected to the semiconductor device; and a plurality of conductive bumps each provided on an outer end of each of the conductive posts, so that the plurality of conductive bump is soldered onto the circuit board when the semiconductor device is mounted on the circuit board. A distance between a peripheral edge of the semiconductor device and an outer edge of the conductive post is determined to be narrow so that a solderbility or wetting condition of the conductive bumps can be visibly recognized easily.
Abstract: The semiconductor device according to the present invention includes: a semiconductor chip including a wire and a passivation film formed on the outermost surface with an opening partially exposing the wire; a resin layer stacked on the semiconductor chip and provided with a through-hole in a position opposed to a portion of the wire facing the opening; and a pad formed on a peripheral portion of the through-hole in the resin layer and in the through-hole so that an external connection terminal is arranged on the surface thereof. The peripheral portion of the resin layer is formed more thickly than the remaining portion of the resin layer other than the peripheral portion.