Patents Issued in September 20, 2001
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Publication number: 20010022805Abstract: A high speed Bluetooth system with switch-to quadrature amplitude modulation allows for simple mobile devices with video data rates in applications such as Internet downloading. Mobile devices may have multiple antennas and adaptive hopping frequencies.Type: ApplicationFiled: February 26, 2001Publication date: September 20, 2001Inventors: Anand G. Dabak, Timothy M. Schmidl, Mohammed Nafie
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Publication number: 20010022806Abstract: There is disclosed a base station apparatus for radiocommunication network in which radiocommunication with one or more radio terminal apparatuses is established according to a frequency hopping scheme.Type: ApplicationFiled: May 15, 2001Publication date: September 20, 2001Inventor: Hideo Adachi
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Publication number: 20010022807Abstract: Method and system for recognizing as a valid receiving path a path having low level signals that conventionally is treated as useless. The valid receiving path for demodulating received signals is recognized out of a plurality of receiving paths in a CDMA wireless telecommunication system: by receiving at least one set of signals through a transmission path, the set of signals being comprised of a predetermined number of received signals. Generating at least two spread codes each of which has its own delay time, the spread code being comprised of a predetermined number of spread code bits.Type: ApplicationFiled: January 10, 2001Publication date: September 20, 2001Inventor: Koji Yotsumoto
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Publication number: 20010022808Abstract: An object of the present invention is to estimate and compensate more accurately transmission channels in CDMA signal decoding. Memory means stores received despread data. Slot position detection means detects positions of pilot symbols. Pilot symbol averaging means obtains transmission channel estimation value per pilot block, by averaging a plurality of reception channels in each pilot block. The transmission channel estimation values are delayed by delay means, multiplied by their weight and added by multi-pilot block transmission channel estimation means. Here, the weighs are controlled adaptively by weight determination means in accordance with the state of the channel. Channel compensation means compensate m-th information symbol in the n-th slot including the pilot block on the basis of the estimation values obtained by the multi-pilot block transmission channel estimation means.Type: ApplicationFiled: February 26, 2001Publication date: September 20, 2001Applicant: NEC CorporationInventor: Masahiro Komatsu
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Publication number: 20010022809Abstract: A receiver for a spread spectrum communication system comprises an acquiring circuit that periodically acquires in synchronization a plurality of signals received via a plurality of paths different in route from a transmitter; a plurality of tracking circuits that track in synchronization a predetermined number of signals among the plurality of signals acquired by the acquiring circuit, respectively; a judging circuit that judges whether present and past propagation condition of the predetermined signals tracked by the plurality of tracking circuits are good or bad; a selecting circuit that selects the predetermined number of signals from the plurality of signals acquired by the acquiring circuit, based upon the present and past propagation condition of the signal judged by the judging circuit, to allow the plurality of tracking circuits to track the predetermined number of signals selected by the selecting circuit.Type: ApplicationFiled: March 12, 2001Publication date: September 20, 2001Inventor: Noboru Yamashita
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Publication number: 20010022810Abstract: A discrete multi-tone (DMT) processor in an asymmetric digital subscriber line (ADSL) modem receives predetermined control signals from a digital signal processor (DSP) within an asymmetric digital subscriber line (ADSL) modem, modulates transmission data in response to the control signals, and demodulates reception data. The DMT processor includes a frame synchronization signal generator, a transmitter, and a receiver. The frame synchronization generator generates a transmission frame synchronization signal and a reception frame synchronization signal in response to a cyclic prefix contained in the transmission data or reception data and a reception synchronization shift signal applied from the DSP. The transmitter DMT modulates and gain-controls the transmission data input through a first input terminal in response to the transmission frame synchronization signal and outputs the modulated and gain-controlled result through a first output terminal.Type: ApplicationFiled: February 27, 2001Publication date: September 20, 2001Applicant: Samsung Electronics Co., Ltd.Inventor: Jin-Tae Joo
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Publication number: 20010022811Abstract: An apparatus for frequency content separating an input signal, said apparatus comprising a plurality of frequency splitting stages, each stage including one or more up-converter and down-converter pairs, an up-converter and down-converter pair serving to receive a complex input signal representing an input bandwidth and to output a first complex output signal representing an upper portion of said input bandwidth and a second complex output signal representing a lower portion of said input bandwidth, said first portion and said second portion being contiguous and together representing said input bandwidth portion.Type: ApplicationFiled: February 1, 2001Publication date: September 20, 2001Inventor: John Lillington
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Publication number: 20010022812Abstract: In an adaptive audio equalizer apparatus, a signal that is output from an adaptive filter 13 is fed to a speaker and to a delaying unit. The signal fed to the delaying unit is delayed for a predetermined time, and is multiplied by a scaling factor in a multiplying unit. A first calculation unit calculates a difference between an output of a microphone and a target response signal, and outputs the result as an error signal. A second calculation unit adds the output of the multiplying unit to the error signal, and outputs the result to a filter coefficient setting unit of the adaptive filter.Type: ApplicationFiled: February 5, 2001Publication date: September 20, 2001Inventors: Tomohiko Ise, Nozomu Saito
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Publication number: 20010022813Abstract: A system for reducing the complexity of an adaptive decision feedback equalizer, for use in connection with a dual-mode QAM/VSB receiver system is disclosed. QAM and VSB symbols, which are expressed in two's compliment notation, include an extra bit required to compensate for a fixed offset term introduced by the two's compliment numbering system. A decision feedback equalizer includes a decision feedback filter section which operates on symbolic decisions represented by a wordlength which excludes the added bit representing the offset. The vestigal word is convolved with the decision feedback filter's coefficients, while a DC component, corresponding to the excluded bit, is convolved with the same coefficient values in a correction filter. The two values are summed to provide an ISI compensation signal at the input of a decision device such as a slicer. A DC component representing a pilot tone in VSB transmission systems also introduces a DC component, and additional bits, to a VSB wordlength.Type: ApplicationFiled: February 27, 2001Publication date: September 20, 2001Applicant: Broadcom CorporationInventors: Loke Kun Tan, Tian-Min Liu, Hing Ada T. Hung
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Publication number: 20010022814Abstract: The present invention is to provide an image change detecting apparatus capable of detecting only a necessary scene change in encoding by the MPEG method accurately and certainly. The apparatus comprises an in-frame distribution value detecting part for detecting the in-frame distribution value in each frame image, a predicted error absolute value sum detecting part for detecting the predicted error absolute value sum in each frame image, and a host CPU for detecting whether or not a scene change occurs based on the change of the in-frame distribution values in each frame image of two consecutive frame images and the change of the predicted error absolute value sums at the boundary timing of the two frame images.Type: ApplicationFiled: March 14, 2001Publication date: September 20, 2001Applicant: PIONEER CORPORATIONInventor: Tomohiro Kimura
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Publication number: 20010022815Abstract: In block based video compression, a frame is divided into blocks which define a tiling pattern. The tiling pattern is varied from frame-to-frame to prevent an accumulation of errors which tend to appear at tile edges and can increase over time when using block-based compression. In a preferred embodiment, a normal frame is padded by a border all around the normal frame size. The padding is operable to extend any blocks around the periphery of the image frame which might be smaller in dimension than the standard blocks, such as those within the interior of the frame, such that they can be treated by the block-based compression systems as full size blocks.Type: ApplicationFiled: May 18, 2001Publication date: September 20, 2001Inventor: Rohit Agarwal
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Publication number: 20010022816Abstract: A system for interpolating half-pels from a pixel array stores pixel data for each pixel in one of a plurality of different memory areas based on a location of the pixel within the pixel array, and determines a specific address in each one of the plurality of memory areas based on a target pixel in the pixel array. The system determines each specific address based on a location of the target pixel in the pixel array. The system also reads, from each the plurality of memory areas, pixel data from determined specific addresses and determines a value of at least one half-pel for the target pixel based on the read pixel data.Type: ApplicationFiled: April 17, 2001Publication date: September 20, 2001Applicant: U.S. Philips CorporationInventors: Michael Bakhmutsky, Karl Wittig
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Publication number: 20010022817Abstract: A compressed data buffer 21 maintains an image data loaded from a storage device 1, and a decoding section 22 conducts variable length decoding, inverse quantization and inverse discrete cosine transform, and a pixel data shifting section 23 shifts each value of pixel data to right by 1 bit, and a motion compensating section 24 applies motion compensation processing to the data shifted to right by 1 bit, and the frame data buffer 25 stores an image data to be displayed, and a reference data calculating section 24a of the motion compensating section 24 obtains a reference data from a reference buffer based on a motion vector, and a reference data adding section 24b adds the reference data to a data to which decoding processing has been applied, and a reference data storing section 24c leaves in the reference buffer the data to which the motion compensation processing has been applied.Type: ApplicationFiled: March 2, 2001Publication date: September 20, 2001Inventor: Toru Yamada
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Publication number: 20010022818Abstract: A controller unit is made so that a work machine can be remotely controlled in a reliable manner irrespectively of whether the controller unit is used outdoors or indoors. Inside the controller unit 10 is provided a transmitter 11 that inputs a control signal S0 indicating the control content, converts the input control signal S0 to a radio signal Se and radio-transmits it toward the work machine 13. The work machine 13 operates according to the radio signal Se radio-transmitted from the transmitter 11. Meanwhile, a transmitter 12 similar to the internal transmitter 11 is provided externally to the controller unit 10. Thereupon, when the external transmitter 12 is connected to the controller unit 10, it is determined by a determining unit 14 inside the controller unit 10 that the external transmitter 12 is connected to the controller unit 10.Type: ApplicationFiled: March 1, 2001Publication date: September 20, 2001Inventors: Noritaka Nagata, Teruaki Arakawa
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Publication number: 20010022819Abstract: A communication system is composed of an encoder encoding an input sequence to sequentially generate output codes X0, X1, . . . , and a decoder decoding the output codes by a MLSD (Maximum Likelihood Sequence Detection) method with a trellis memory length being L. The output code Xk of the output codes X0, X1, . . . is determined based on the input sequence for k that is not equal to i(N+1) with i being any of natural numbers and with N being an natural number. The output code Xi(N+1) of the output codes X0, X1, . . . are uniquely determined based on a subset of a set consisting of the output codes Xi(N+1)−L+1, Xi(N+1)−L+2, . . . , Xi(N+1)−1 of the output codes X0, X1, . . . The subset includes the output code X1(N+1)−L+1 of the output codes Xi(N+1)−L+1, Xi(N+1)−L+2, X1 (N+1)−1.Type: ApplicationFiled: February 27, 2001Publication date: September 20, 2001Applicant: NEC CORPORATION.Inventor: Yoshikazu Kakura
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Publication number: 20010022820Abstract: In a mobile communication system, a method and circuit for symbol estimation is described. According to the method, a soft output decision for a symbol is estimated and is fed back to modify decisions made for a subsequent set of received samples. This has the advantage of conveying not only information about the most likely symbol, but also information about the noise environment.Type: ApplicationFiled: December 27, 2000Publication date: September 20, 2001Inventors: Qin Zhengdi, Mikko Jarvela
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Publication number: 20010022821Abstract: A novel amplitude deviation correction circuit which corrects an amplitude deviation between an I signal and a Q signal is disclosed. An average amplitude deviation between an I signal amplified by a variable gain amplifier and a Q signal amplified by another variable gain amplifier is detected by an amplitude comparison circuit, and +1 volt or −1 volt is outputted in response to a result of the detection. An integration circuit integrates the output of the amplitude comparison circuit and controls the gains of the variable gain amplifiers in response to a result of the integration.Type: ApplicationFiled: March 2, 2001Publication date: September 20, 2001Inventor: Masaki Ichihara
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Publication number: 20010022822Abstract: Apparatus for and method of processing received signals for use with multiple antenna spatial diversity receivers used in a digital communications system. The receiver has received signal phase modulator apparatus for each diversity received signal. The phase modulator provides a two state phase perturbation of zero or pi radians, based on the carrier frequency, which is switched to modulate the phase of the received signal for a fifty percent duty cycle over a symbol period.Type: ApplicationFiled: March 19, 2001Publication date: September 20, 2001Inventor: J. Eric Salt
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Publication number: 20010022823Abstract: A method and system for synchronizing a receiver's clock to the clock of a transmitter is disclosed herein. The disclosed system employs a digital clock synthesizer that uses patterns superimposed upon a receiver oscillator to synthesize a clock rate that approximates the clock rate of the transmitter. The pattern superimposed upon the receiver oscillator can be varied to allow for tracking of the variation in the transmitter clock.Type: ApplicationFiled: March 20, 2001Publication date: September 20, 2001Inventor: Pierre Renaud
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Publication number: 20010022824Abstract: An object of the present invention is to provide a delay apparatus which can delay not only a rising edge but also falling edge of the digital signal for a predetermined delay period of time.Type: ApplicationFiled: March 16, 2001Publication date: September 20, 2001Inventor: Satoru Araki
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Publication number: 20010022825Abstract: A data sync signal detecting device with a simple configuration for detecting a sync signal with a few sync signal detection errors is disclosed. The detecting device is configured such that the output data of a most-likelihood decoder constituting a data discriminator is applied to a shift register bit cell and sequentially shifted and held in the bit cells of shift registers. The outputs of these bit cells are separated into an odd-numbered bit string and an even-numbered bit string and applied to first and second pattern matching circuits. The odd-numbered bit string is matched with “01001” as a predetermined sync signal pattern by a first pattern matching circuit which produces a first matching result. The even-numbered bit string is matched with “01011” as a predetermined sync signal pattern by a second pattern matching circuit which produces a second matching result. The first and second matching results are applied to a coincidence number adder/majority decision circuit.Type: ApplicationFiled: April 19, 2001Publication date: September 20, 2001Inventor: Yoshiju Watanabe
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Publication number: 20010022826Abstract: Circuits and methods are described which reduce waiting time jitter at a synchronizer/multiplexer by using a “sub-bit” comparison of a clock associated with an unsynchronized data stream and a clock associated with a synchronized data stream to generate a threshold level for use in determining when to stuff bits into the synchronized data stream. The term “sub-bit” means that the phase difference, as measured by, for example, the location of pointers associated with the two clocks, is precise to a fraction of a bit.Type: ApplicationFiled: February 23, 2001Publication date: September 20, 2001Applicant: ADC Telecommunications, Inc.Inventor: Michael J. Rude
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Publication number: 20010022827Abstract: A nuclear reactor fuel assembly with a high burnup is provided. In order to increase the burnup potential of fuel assemblies, pellets with an impermissibly high level of enrichment are produced on production lines, which are constructed for processing large quantities of normally enriched fuel. The impermissible level of enrichment is compensated for by the fact that, as early as in a powder mixer at an entry to the production line, so much absorber material is mixed with the fuel that the reactivity of the poisoned mixture does not exceed the reactivity of an unpoisoned fuel mixture with a normal level of enrichment. Corresponding fuel assemblies then contain relatively large quantities of these poisoned pellets (or only such poisioned pellets), which can be produced in large numbers (and therefore economically) by using conventional plants.Type: ApplicationFiled: May 23, 2001Publication date: September 20, 2001Applicant: Siemens AktiengesellschaftInventors: Gerhard Gradel, Alfons Roppelt, Rudolf Meinl
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Publication number: 20010022828Abstract: The pedometer having improved accuracy by being calibrated to actual user stride lengths and stride rates, and being recalibrated as necessary based on subsequent actual stride rates and lengths. The pedometer can also interact with a heart monitoring device.Type: ApplicationFiled: January 19, 2001Publication date: September 20, 2001Inventor: Nathan Pyles
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Publication number: 20010022829Abstract: The invention relates to a method of setting a position of an object of measurement in layer thickness measurement by X-ray fluorescence in which a beam of an optical recording device is projected into the beam of the X-radiation and in which the surface of the object of measurement is recorded and output as an image comprising a number of image points, with the distance between the surface and the collimator being changed by an absolute amount of a path of movement, with changes in brightness of the image points being recorded in at least one measuring plane during the at least one change of the distance between the surface and the collimator, with the maximum of the difference in brightness of the image points of an image being ascertained after the at least one change of the absolute amount of the distance, and with the distance between the collimator and the object of measurement being set to the position of the ascertained maximum of the difference in brightness.Type: ApplicationFiled: March 19, 2001Publication date: September 20, 2001Inventors: Karl-Heinz Kaiser, Volker Robiger
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Publication number: 20010022830Abstract: A system and process for classifying a piece of material of unknown composition at high speeds, where the system connected to a power supply. The piece is irradiated with first x-rays from an x-ray source, causing the piece to fluoresce x-rays. The fluoresced x-rays are detected with an x-ray detector, and the piece of material is classified from the detected fluoresced x-rays. Detecting and classifying may be cumulatively performed in less than one second. An x-ray fluorescence spectrum of the piece of material may be determined from the detected fluoresced x-rays, and the detection of the fluoresced x-rays may be conditioned such that accurate determination of the x-ray fluorescence spectrum is not significantly compromised, slowed or complicated by extraneous x-rays. The piece of material may be classified by recognizing the spectral pattern of the determined x-ray fluorescence spectrum. The piece of material may be flattened prior to irradiation and detection.Type: ApplicationFiled: April 6, 2001Publication date: September 20, 2001Inventors: Edward J. Sommer, Robert H. Parrish, David B. Spencer, Charles E. Roos
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Publication number: 20010022831Abstract: A medical apparatus for (radiation) diagnosis or therapy can be provided with moving parts 6. Such an apparatus must be provided with a collision detection device 26, 28, 30. A known collision sensor measures the supply current for the drive motor and hence induces a high degree of inaccuracy in the collision detection. According to the invention the force applied to the moving part (image intensifier 6) is measured directly on the relevant part so as to be compared with an expected value, an alarm signal being generated when a threshold value for the difference is exceeded. The expected value is calculated while taking into account all movement and acceleration parameters of the apparatus. The expected values can be calculated in advance and stored in a look-up table or can be calculated, preferably while using a model of the apparatus, during operation of the apparatus.Type: ApplicationFiled: December 19, 2000Publication date: September 20, 2001Inventors: Gerrit Jan Meek, Cornelis Martinus Van Doorn, Wilhelmus Hubertus Baaten, Casparus Willibrordus Kruijer
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Publication number: 20010022832Abstract: An X-ray apparatus with an X-ray source for producing a beam of X-rays, an X-ray detector for detecting the beam, and an X-ray filter with filter elements which is arranged between the X-ray source and the X-ray detector so as to attenuate the X-ray beam in each independent filter element individually. Each filter element (13) can receive a liquid (22) which is electrically conductive and X-ray absorbing, and is supplied via a transport channel (20), the X-ray absorptivity of each filter element being discretely adjustable by step-wise adjustment of the level of the liquid (22) in each filter element. Each filter element includes a first electrode (23) which is located in the wall of the filter element, on top of a substrate layer (38), in order to apply an electric potential to the wall of the filter element. A second electric potential is applied to the liquid (22) via a second electrode (29).Type: ApplicationFiled: February 2, 2001Publication date: September 20, 2001Inventors: Menno Willem Jose Prins, Edward Willem Albert Young, Jeroen Van Velzen, Brian Kenneth Herbert
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Publication number: 20010022833Abstract: An X-ray image receiver is supported through a guide mechanism on a support bench. The guide mechanism consists of a pair of first guide members, a pair of first sliding members, a pair of second sliding members, a pair of third sliding members, a pair of second guide members, and a rotation link member. The first guide members, which are disposed opposite to each other, extend on top of the support bench along the shorter side of the tabletop. The first sliding members are slidably installed on the inside of the first guide members. The second sliding members are slidably installed on the inside of the first sliding members. The third sliding members are secured to the sides of the X-ray image receiver. The second guide members are installed on the outside of the third sliding members. The rotation link member rotatably links the second guide members with the second sliding members. Using a lock lever, the third sliding members are locked so that they do not slide with respect to the second guide members.Type: ApplicationFiled: December 21, 2000Publication date: September 20, 2001Inventor: Masaaki Kobayashi
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Publication number: 20010022834Abstract: The invention is directed to a mobile X-ray apparatus having an X-ray system comprising an X-ray source and an X-ray detector that is arranged at a carrier device. For registering a series of 2D projections of a subject, the carrier device is pivotable under motor drive around an axis that proceeds at least essentially horizontally through the carrier device. The X-ray apparatus comprises means for generating a 3D image dataset from the registered 2D projections. The invention is also directed to a method for determining the projection geometries required for producing a 3D image dataset from registered 2D projections.Type: ApplicationFiled: January 29, 2001Publication date: September 20, 2001Inventors: Rainer Graumann, Jochen Kusch
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Publication number: 20010022835Abstract: A speaker apparatus can ensure a large size and area of a diaphragm so as to improve reproducing capability in a low sound range and increase an output sound pressure, and can constitute a plurality of vibrating points (signal control points). An input signal Vin having a plurality of independent channels is inputted, then the signal input Vin is processed in a sound signal processing portion 30 by calculating and adding of an interference canceling signal between the signal control points, by calculating and adding of a sound interference signal for causing the interference between outputs from the signal control points in an arbitrary point, etc., so as to be inputted to transducers 20 that are attached to a single diaphragm 10. The transducer 20 transduces an electric signal into mechanical vibration. A plurality of the signal control points are generated on the single diaphragm, and each signal control point cause the single diaphragm 10 to vibrate.Type: ApplicationFiled: March 9, 2001Publication date: September 20, 2001Applicant: FUJITSU LIMITEDInventor: Naoshi Matsuo
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Publication number: 20010022836Abstract: Apparatus and method for simultaneously providing multiple telephone-type services to any/all POTS-type devices on a single wire pair at a user premises. The present invention provides for the ability to add separately addressable POTS devices on a single service loop. This can be accomplished in at least two ways: first by the use of a multipoint protocol or second by Frequency Division Multiplexing.Type: ApplicationFiled: February 27, 1998Publication date: September 20, 2001Inventors: GORDON BREMER, JEFF DAVIS
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Publication number: 20010022837Abstract: Open, horizontal service platforms are described. Service providers can, via network operators, load software associated with a service onto a dedicated, service platform server. The service platform server is connected, via a LAN, to one or more remote devices (e.g., sensors, transducers, processors, etc.). The functionality associated with the service can be distributed among two or more of the entities involved in the architecture. The distributed software operates and/or monitors these remote devices to implement the subscribed service.Type: ApplicationFiled: May 14, 2001Publication date: September 20, 2001Inventors: Jesper Vasell, Tom Idermark, Malte Lilliestrale, Hans Thorsen, Staffan Truve, Carlo Pompili, Johan Ljungberg, Jorgen Andersson
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Publication number: 20010022838Abstract: The present invention relates to a private telecommunications system comprising a number of switching arrangements (NA, NB) and using an asymmetrical protocol supporting set up of virtual calls between two switching arrangements for transfer of information. Means are provided for creating a call reference in the first switching arrangement (NA) when a first virtual call is to be set up from the first switching arrangement (NA) to a second switching arrangement (NB), storing means being provided in said first and second switching arrangements (NA, NB) for storing said call reference. Said first virtual call is released while all internal connections and the end points related to it are kept, and a second virtual call is set up in the direction opposite to that of the first virtual call using said call reference such that symmetrical transfer of information is enabled between the two switching arrangements (NA, NB).Type: ApplicationFiled: December 14, 2000Publication date: September 20, 2001Inventors: Anders Jacobsson, Arne Ohlsson, Jan Bengtsson, Hakan Karlsson, Ola Andersson, Staffan Sjodin, Ghasem Naghavi
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Publication number: 20010022839Abstract: A screen in an operation mode is displayed on a display section (Step 51). Next, when a portion which is not displayed on a current screen is to be displayed through scrolling, it is decided whether a warp key (browser function key) is pushed down or not (Step 52). If the warp key (browser function key) is pushed down, a scroll mode is changed (Step 53). If the warp key (browser function key) is not pushed down, a current scroll mode is maintained (Step 54). Examples of the scroll mode to be changed include a line unit and a page unit.Type: ApplicationFiled: February 27, 2001Publication date: September 20, 2001Applicant: Matsushita Electric Industrial Co., Ltd.,Inventor: Junji Ishigaki
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Publication number: 20010022840Abstract: A front cover for a communication equipment is described which comprises an external pad having a transparent display window placing portion and button placing portions which are projected outwardly from an outer surface of the external pad; a housing which is integrally placed at an inner surface of the external pad and has a transparent display window through hole corresponding to the transparent display window placing portion and button through holes corresponding to the button placing portions; a transparent display window which is integrally placed at the transparent display window placing portion of the external pad; and buttons which are integrally placed at the button placing portions of the external pad. The transparent display window, the housing and the buttons can be molded on the inner surface of the external pad by injecting synthetic resins onto each of placing portions thereof.Type: ApplicationFiled: March 15, 2001Publication date: September 20, 2001Inventor: Chul Ki Kwak
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Publication number: 20010022841Abstract: The present invention was developed in order to realize a multi-channel sound system wherein appropriate output (balance and fader) control can be conducted without adversely affecting the program contents, and a sound system, which can reproduce a plurality of channel signals including at least left and right front channels and a center channel for forward-placed speakers, comprises a gain controller to control the gain of either left or right channel signal and a gain controller to control the gain of the center channel signal depending on the gain control of the left or right channel signal.Type: ApplicationFiled: March 16, 2001Publication date: September 20, 2001Inventors: Akira Motojima, Hiroshi Kowaki, Yuji Tomita, Hideki Matsui
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Publication number: 20010022842Abstract: In a method for adjusting the phase of a sound signal from multiple speaker units connected to a computer (e.g. a PC), a microphone is installed at a user's listening position, a reference sound is generated from a single particular speaker unit based on a reference sound data having a certain waveform, a phase difference between the reference sound data and a sound detected by the microphone is calculated for each of the speakers, an average value qF of the phase differences for front speakers and an average value qR of the phase differences for rear speakers are respectively calculated, and if |qF−qR|≧90°, phases of the sound data output to the rear speakers are inverted.Type: ApplicationFiled: January 5, 2001Publication date: September 20, 2001Applicant: International Business Machines Corporation Armonk NYInventor: Kazuo Fujii
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Publication number: 20010022843Abstract: A small-sized audio signal reproducing apparatus for hearing reproduced audio signals with the aid of a headphone is disclosed. Digitized and compression encoded audio signals, stored in a semiconductor memory, are read out so as to undergo a decoding operation, which is an inverse operation to compression encoding, to reproduce the audio signals, and the reproduced signals are heard by the headphone. The apparatus may be significantly reduced in size and weight as compared to the apparatus in which a tape or a disk is used as the recording medium.Type: ApplicationFiled: April 26, 2001Publication date: September 20, 2001Applicant: Sony CorporationInventors: Masayuki Nishiguchi, Yoshihito Fujiwara
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Publication number: 20010022844Abstract: A bobbin unit includes a base portion and a coil winding portion on which a conductor is wound. A hole is formed in a central part of the base portion to allow an armature to pass through. Coil side terminals to which ends of the conductor are fixed and signal input terminals to which an external signal is entered are provided at opposite ends of the base portion with the hole located in between. The coil side terminals are electrically connected to their corresponding signal input terminals inside the base portion. A coil is formed on the coil winding portion by winding the conductor. The ends of the conductor are wound around the respective coil side terminals and fixed thereto by arc welding. Since the conductor is electrically connected to the signal input terminals when the ends of the conductor are fixed to the coil side terminals, connection of the ends of the conductor constituting the coil to the signal input terminals is made easy.Type: ApplicationFiled: March 14, 2001Publication date: September 20, 2001Applicant: STAR MICRONICS CO., LTD.Inventors: Kiyoshi Urushibata, Tomonari Suzuki
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Publication number: 20010022845Abstract: There is provided a microphone apparatus with an adjusting mechanism that prevents wind noise generated at a sound absorbing hole from perceptively inputted in the structure having a microphone built-in at the back of a panel with a sound absorbing hole.Type: ApplicationFiled: March 12, 2001Publication date: September 20, 2001Applicant: VERTEX STANDARD CO., LTD.Inventor: Hideaki Kakinuma
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Publication number: 20010022846Abstract: Poly-norbornene based rubber is foamed and expanded to mold a speaker foamed-rubber edge. Short fibers are blended into the poly-norbornene based rubber to have orientation in the radial direction of the edge.Type: ApplicationFiled: March 5, 2001Publication date: September 20, 2001Applicant: Pioneer Corporation; Tohoku Pioneer CorporationInventors: Toshihiro Ishigaki, Yoshitaka Kobayashi
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Publication number: 20010022847Abstract: The present invention relates to a soundproof panel, and in particular to a smart panel for decreasing a noise in a wide band. The smart panel according to the present invention includes a board structure for decreasing a noise of an audible frequency band, a sound absorption member attached to one surface of the board structure for decreasing the noise of an audible frequency band, and a piezoelectric noise attached to the board structure for decreasing the noise when the same audible frequency as the resonance frequency of the board structure is propagated for thereby maximizing the insertion loss in the resonance frequency of the board structure.Type: ApplicationFiled: March 12, 2001Publication date: September 20, 2001Inventor: Jae Hwan Kim
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Publication number: 20010022848Abstract: Security documents (e.g. passports, currency, event tickets, and the like) are encoded to convey machine-readable multi-bit binary information (e.g. digital watermark), usually in a manner not alerting human viewers that such information is present. The documents can be provided with overt or subliminal calibration patterns. When a document incorporating such a pattern is scanned (e.g. by a photocopier), the pattern facilitates detection of the encoded information notwithstanding possible scaling or rotation of the scan data. The calibration pattern can serve as a carrier for the watermark information, or the watermark can be encoded independently. In one embodiment, the watermark and the calibration pattern are formed on the document by an intaglio process, with or without ink. A photocopier responsive to such markings can take predetermined action if reproduction of a security document is attempted.Type: ApplicationFiled: January 16, 2001Publication date: September 20, 2001Inventor: Geoffrey B. Rhoads
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Publication number: 20010022849Abstract: An improved method for accurately and correctly encoding and printing complete checks on blank paper sheets from graphic check images. The method includes inputting into a computer a graphic image of a check. Scanning the graphic image, in computer memory, and identifying the MICR character codes with their locations. Printing said MICR codes with magnetic ink in MICR fonts in a designated “clear band”. Reformatting the scanned graphic image with the MICR images deleted and printing the reformatted graphic image above the “clear band” to provide a negotiable check instrument.Type: ApplicationFiled: February 26, 2001Publication date: September 20, 2001Inventor: Jerome Simonoff
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Publication number: 20010022850Abstract: The disclosed content relates to a three dimensional real-time imaging apparatus of the ocular retina, which is associated with the most frequent ophthalmic diseases. In the present invention, the laser rays are formed into two dimensional ray surface sequentially with the time by using a polygon mirror motor and galvanometer and irradiated on the almost transparent retina through the pupil. The optical system is so arranged that the incident angles, relative to a retina, of the laser beams irradiated on the retina at respective moments may agree with the output angles of imaginary lines of the same laser rays reflected from a retina in both the vertical and horizontal direction. Further, the laser sequential single lines lit on the retina are caused to correspond to the sensors array, so that two dimensional retinal surface elements as many as the sensors of the sensor array are imaged in real time three dimensions.Type: ApplicationFiled: March 12, 2001Publication date: September 20, 2001Inventors: Yunsik Yang, Sungki Lyu
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Publication number: 20010022851Abstract: A digital picture signal processing apparatus is disclosed, that comprises a picture processing means for compressing a captured digital picture signal, and a mode designating means for generating a signal that designates a picture processing operation of the picture processing means to a first mode or a second mode, wherein when the first mode is designated, the picture processing means generates first compressed picture data of which the digital picture signal is compressed by a non-inversible encoding method, and wherein when the second mode is designated, the picture processing means generates second compressed picture data of which the digital picture signal is digitized and the digitized picture signal is compressed by an inversible encoding method.Type: ApplicationFiled: January 29, 2001Publication date: September 20, 2001Inventors: Jun Nagai, Mio Ozawa, Katsuhiko Ueno
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Publication number: 20010022852Abstract: A method and device for monitoring the quality of distributed digital images coded by blocks of pixels in which a false contour phenomenon may be generated when the image is reproduced. An image average for pixels represented by at least one luminance respectively chrominance components is calculated and a false contour effect on the basis of a criterion for discriminating the luminance or chrominance component difference between adjacent pixels of adjacent groups of pixels is detected in at least one reference direction of each current image. A visibility coefficient of at least one current image is calculated from the value of the image average speed vector and psycho-visual criteria relating to the existence of the false contour effect in the reference direction.Type: ApplicationFiled: February 5, 2001Publication date: September 20, 2001Inventors: Jean-Charles Gicquel, Stephane Pefferkohn, Emmanuel Wyckens, Jean-Louis Blin
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Publication number: 20010022853Abstract: An image processing method and image processing device extracting, from an image, a pupil region in which unsatisfactory color tone has arisen on the image; determining a target value of a characteristic amount of the pupil, on the basis of a characteristic amount of a region including a majority of the image, a characteristic amount of a region in a vicinity of the pupil region, and a characteristic amount of the pupil; and correcting a value of each pixel within the pupil region, such that the characteristic amount of the pupil region in which unsatisfactory color tone has arisen is substantially equal to the target value, are provided in order that unsatisfactory color tone of a pupil region within an image can be corrected such that the image can be finished with a natural feel.Type: ApplicationFiled: December 22, 2000Publication date: September 20, 2001Inventor: Naoki Takaoka
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Publication number: 20010022854Abstract: A recognition apparatus of this invention for recognizing sorting information as a character string written within a cellophane region of a paper-like material extracts edge components according to a differential image based on an image of light and shade of the paper-like material, determines a cellophane frame based on the edge components and recognizes the character string within the thus determined cellophane frame as an address. Thus, the cellophane region in which the address used as the sorting information is written can be correctly extracted and occurrence of erroneous recognition of the sorting information and erroneous sorting of the paper-like material can be prevented.Type: ApplicationFiled: March 14, 2001Publication date: September 20, 2001Inventor: Kentaro Yokoi