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JP3344353B2 |
To improve estimation characteristics of a signal estimator by rotating the phase of a receive signal according to the phase of the output signal of a voltage-controlled oscillator, detecting the impulse response of a transmission line, ...
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JP2002324713A |
To provide a noise absorption element in which noise absorption effect is demonstrated in a wide frequency band.In this noise absorption element, a conductor 2 is arranged within a magnetic molded body 3 made of mixture of metallic magne...
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JP2002319906A |
To surely transmit transmitting data to a receiving side while avoiding the effect of interference radio waves from a microwave oven or the like in the radio communication of ISM band.The radio communication apparatus is provided with a ...
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JP2002313935A |
To prevent the problem that the quality of an analogue signal is deteriorated by receiving digital noise from a crystal-oscillator circuit when one chip is formed by an analogue circuit and a crystal-oscillator.A crystal-oscillator circu...
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JP2002300171A |
To provide a wireless LAN system where it is not required to change a transmission reception frequency for a period when an electronic oven generates an interference radio wave and a data communication speed is not almost reduced in comp...
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JP2002290340A |
To provide an information processing unit that revises an operating frequency of a device in a way of preventing interference with a radio communication frequency band of a radio module used for radio communication so as to reduce noise ...
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JP2002271425A |
To provide a method of transmitting signal between substrates by which radiation noise can be reduced.A plurality of bits of same-phase transmitting signals S41-1 to S41-n outputted from a transmitting signal section 41 provided in a tra...
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JP2002257880A |
To simply and accurately evaluate a radiation noise removing filter.A signal is passed by connecting a signal supplier and a signal receiver with a transmission line to measure an initial radiation noise level (S1). Also, an initial peak...
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JP2002258893A |
To provide a noise-estimating device capable of estimating noise with high accuracy and easily performing fast processing, and a noise-eliminating device.This noise-estimating device for estimating noise in a voice signal, has a time dom...
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JP3323067B2 |
To correct the estimation signals of the respective paths of respective stations and to perform accurate interference elimination by outputting elimination error signals for which an inter-station interference amount is eliminated from r...
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JP3320133B2 |
PURPOSE:To reduce the influence of high frequency noise by connecting a main body equipment and plural slave equipments by using a coaxial cable, and providing a switch for transmitting signal switching and a switch for ground connection...
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JP2002247117A |
To provide a cable compensation method for serial digital video signals that decreases the effect of noise disturbance by attenuating an unnecessary high frequency component even when a bit rate of a serial digital video signal is low.A ...
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JP2002526937A |
(57) [Summary] The present invention is 0.004 10-3Ω × m to 5/10-Ω3A protective device for an electric circuit against an interfacial microdischarge phenomenon, which includes at least one protective device (1) composed of an electroma...
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JP3314784B2 |
PURPOSE: To remove a noise, which is caused by coils in the junction circuit of an electromagnetic output circuit and interference of an external magnetic field, using noise removing elements and to obtain an output faithful to an input ...
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JP3311601B2 |
To reduce power consumption and to eliminate a frequency sweep through the effect by performing transmission during a usual transmission mode and cyclically or distributedly performing transmission buring an idle mode. Time sharing radio...
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JP2002218282A |
To provide a video signal reproducing circuit and video equipment, with which the radio wave of 900 MHz from the portable telephone set of GSM system is not detected by the amplifier circuit of the video equipment, in the video equipment...
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JP2002218573A |
To provide an electric load driver that does not generate impairment signals by the harmonic components of a clock signal of a CPU.A local oscillation circuit 16 of a receiving circuit section 23 extracts an oscillation signal, and a fre...
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JP3309895B2 |
To provide a noise reducing method and a device degraded little in tone quality in acoustic sense. An input signal 15 is converted into a digital signal and then divided into a plurality of bands by a frequency band dividing part 22. The...
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JP3306479B2 |
PURPOSE: To reduce the effect of a radio wave invaded in the telephone set installed in a strong electric field strength area such as surrounding of a radio station. CONSTITUTION: A telephone set circuit 13 makes communication of a trans...
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JP3304683B2 |
PURPOSE: To reduce interference onto a radio receiving circuit by providing a clock modulation means and a data processing means so as to reduce harmonics generated by digital data and a circuit generating the digital data. CONSTITUTION:...
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JP2002521945A |
A communication terminal includes a transmitter for transmitting bursts of a modulated carrier. An interference suppressor suppresses an known interference signal caused by the transmission of the bursts and includes a frequency separato...
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JP2002521986A |
(57) [Summary] The present invention relates to a solution for the operation of a mobile telecommunications terminal device in a public cellular mobile wireless network having at least one base transmit / receive station and a mobile sta...
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JP3301735B2 |
To sufficiently cancel even an interference wave spread over a frequency band with a significant width by filtering a signal branched from a main line signal with a prescribed narrow band BPF and generating a cancellation signal so that ...
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JP3302620B2 |
To absorb noise extending over the wide frequency band of a noise absorption device and also to facilitate a mounting of the device to a cable, by a method wherein cylindrical first magnetic members and a cylindrical second magnetic memb...
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JP2002190748A |
To increase radio resistance to radio frequency interference from another system while moving to the neighborhood of the antenna of a difference system concerning mobile radio.When the power level of a received signal satisfies or exceed...
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JP3297307B2 |
To improve the acoustic feeling and the tone quality by detecting narrow bandwidth noises and switching the noise eliminating characteristics. An adder 28 performs the noise eliminating process in which estimated background noise signals...
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JP3297215B2 |
PURPOSE: To effectively prevent the leakage radiation of an electromagnetic wave by using ferrite bead inductors to control a high frequency current in case when the ground potential of each pedestal minutely fluctuates with a high frequ...
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JP3297638B2 |
To provide a small inductance element and wireless terminal device of high inductance and god productivity efficiency. With a base stage 11, a conductive film 12 provided on the base stage 11, and a spiral groove 13 provided at the condu...
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JP3295347B2 |
To improve the attenuating characteristic of noise by forming a receiving part and a transmission part independently on a substrate and covering the low pass filter of a receiving part and that of a transmission part respectively with sh...
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JP3293407B2 |
PURPOSE: To eliminate the effect on the performance of an antenna such as radiation pattern or directivity when electronic components are arranged on a flip of the portable radio equipment. CONSTITUTION: A length of a lead wire 3 of an e...
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JP2002517020A |
Methods and apparatus for providing speech enhancement in noise reduction systems include spectral subtraction algorithms using linear convolution, causal filtering and/or spectrum dependent exponential averaging of the spectral subtract...
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JP2002164988A |
To provide an adaptor for a mobile terminal that can prevent sound quality of an AM broadcast signal from being deteriorated because of reception of a digital noise from the portable telephone in the case of connecting the adaptor to the...
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JP3288885B2 |
PURPOSE: To prevent the sudden change of an oscillating output when momentary interruptions are generated in operating power supplies. CONSTITUTION: In an electric circuit 30 for outputting a signal via a plurality of operational amplifi...
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JP2002158484A |
To provide a radio wave absorber which has a high absorption function to an electromagnetic wave of high frequency and is made smaller in thickness.This radio wave absorber is comprised of more than one magnetic layer which contains a ma...
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JP2002158486A |
To provide a electromagnetic wave absorbing film which is formed of nano-granular soft magnetic film that is large in electric resistivity, saturation magnetization, and anisotropic magnetic field, and has a large absorbing characteristi...
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JP2002158483A |
To provide a radio wave absorber in which suitable material and structure can be appropriately selected and which is superior in absorption of electromagnetic wave of high frequency and is made smaller in thickness.This radio wave absorb...
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JP3285760B2 |
PURPOSE: To prevent the leakage of interference electromagnetic waves from a game machine main body to a tuner block by opening all or a part of the connection of a connector when the turner block is attached to the game machine main bod...
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JP2002152613A |
To solve the problem that an error takes place when a noise level is high in a system for digitizing an intermediate frequency to suppress an impulse noise.A television tuner for a digital ground wave has inputting parts 2 to 15 for supp...
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JP2002141691A |
To provide a radio wave absorbing body which absorbs an electromagnetic wave of 1-18 GHz.The electromagnetic absorbing body is provided in which charcoal particles are solidified with a binder resin while a reflecting plate and a charcoa...
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JP2002133536A |
To provide a radio apparatus for generating an optimum alarm in a prescribed environment.The radio apparatus 100 having a definition of the optimum alarm sequence analyzes its environment including a leading call time and kind, and selec...
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JP3279372B2 |
PURPOSE: To efficiently and quickly eliminate background noise by detecting the background noise, based on the periodicity of voice signals and the intonation of a speech so as to surely evaluate the noise. CONSTITUTION: A voice signal 2...
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JP3277979B2 |
To improve the shield performance of electromagnetic coupling of high frequency apparatus and simplify the assembling work. The mounting region of a printed board 5 is divided into halves. In one half, circuit elements 22 are mounted on ...
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JP3274055B2 |
To improve IM (intermodulation) by forming the 1st gain adjustment signal according to input and output characteristics changed continuously or stepwise monotonously when the received signal strength is within a prescribed range. A recei...
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JP3271927B2 |
To provide a radio equipment with a modem that gives no disturbance from undesired radiation. When a press-to-talk switch (PTT.SW) 2 is depressed, a controller 21A transfers prescribed control data from a built-in RAM 22 to a modem 13, i...
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JP2002101052A |
To provide a mounting structure of an impedance element for removing noise, a method and program for selecting mounting position of the impedance element for removing noise, and storage medium recorded with a program for selecting the in...
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JP3269969B2 |
To prevent a noise attenuation using an estimated noise signal from being erroneously renewed by a signal during a sound period, and prevent the deterioration of sound quality, by stopping renewing of an estimated noise signal during the...
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JP2002076978A |
To surely adjust phase without deteriorating the suppression performance of the elimination of a radio interference even when the quantity of phase adjustment is altered largely by the change or the like in the environment.The radio-inte...
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JP2002076961A |
To provide a portable communication device capable of eliminating noise components caused by timing control from speech signals without increasing the size of the device and costs.A timing control unit 13 supplies a control signal requir...
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JP2002077065A |
To provide an FM multiplex built-in television receiver that can prevent disturbance of a local oscillation frequency signal generated by an FM multiplex signal receiver onto a television broadcast program.An information storage table 15...
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JP2002077064A |
To provide an FM multiplex built-in television receiver that can prevent disturbance of a local oscillation frequency signal generated by an FM multiplex signal receiver onto a television broadcast program.A microcomputer 150 of the FM m...
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