Patent application number | Description | Published |
20080232506 | Reception Device, Transmission Device, and Radio System - A transmitter using a plurality of pulse signals having different pulse sequence times, a receiver for steadily demodulating pulse signals of only desirable wave, and a wireless system are disclosed. In the transmitter, a control signal generating circuit outputs a control signal for generating a plurality of pulse signals having different pulse sequence generating times, a pulse generating circuit generates a plurality of pulse signals by using the control signal. In the receiver, reception front end receives the plurality of pulse signals having different pulse sequence generating times, delay circuit delays at least one of reception front-end output signals supplied from the reception front-end by a given time, delay pulse composition circuit combines delay signal with reception front-end output signal so that the receiver steadily demodulates the pulse signals of only the desirable wave. | 09-25-2008 |
20080267324 | Impulse Radio Communication Device - An impulse radio communication device includes a wave detector for generating a detected signal, a switching section for selecting either a received signal or the detected signal in accordance with an external control signal and outputting it as a demodulation target signal, a reference waveform generating section synchronized with the demodulation target signal and generating a reference waveform signal having a different waveform in accordance with the external control signal, a demodulator for generating a demodulated signal from the demodulation target signal in accordance with the reference waveform signal, and a decoding section for decoding received data from the demodulated signal. This impulse radio communication device switches the demodulation target signal and the reference waveform signal simultaneously in accordance with a receiving and synchronizing state. This makes it difficult that synchronization is pulled in a correlation position having low electric power, and can reduce a acquisition time. | 10-30-2008 |
20080292037 | Master Side Communication Apparatus and Slave Side Communication Apparatus - A master side communication apparatus and a slave side communication apparatus wherein the structure of a receiving part of the slave side communication apparatus is simplified to achieve a reduced size, a reduced power consumption and a reduced cost. The master side communication apparatus performs a communication in synchronism with the slave side communication apparatus having no synchronization timing adjusting function. A transport signal generating timing adjusting part of the master side communication apparatus acquires, from the slave side communication apparatus, synchronization signal generation timing information used when the slave side communication apparatus receives the transport signal from the master side communication apparatus. The transport signal generating timing adjusting part varies and adjusts, based on the acquired information, the transmission timing of the signal to be transmitted to the slave side communication apparatus. A transmitting part transmits the transport signal at the adjust transmission timing. The occurrence timing of the transport signal is varied and adjusted until the slave side communication apparatus becomes able to receive the transport signal from the master side communication apparatus. | 11-27-2008 |
20090041169 | PULSE MODULATION TYPE TRANSMITTER APPARATUS AND PULSE MODULATION TYPE RECEIVER APPARATUS - A pulse modulation type transmitter apparatus and a pulse modulation type receiver apparatus wherein both a fast synchronization establishment and a low power consumption of a synchronizing part can be achieved at the same time and wherein the data transmission/reception can be performed soon after a commencement of communication, and further a fast data transmission and a low power consumption can be achieved. A first template signal ( | 02-12-2009 |
20090074117 | Pulse Radio Receiver - A pulse radio receiver not needing re-setting of the threshold for reception synchronization, judging the direction and amount of adjustment of the synchronization even if the signal strength varies, and having a shortened pull-in time of the synchronization position. The receiver comprises a detect ( | 03-19-2009 |
20090110128 | SYNCHRONIZATION ACQUIRING DEVICE AND SYNCHRONIZATION ACQUIRING METHOD - A synchronization acquiring device and method for realizing synchronization acquisition at high speed equivalent to that of parallel search with a simple constitution similar to that of series search. A synchronization acquiring device ( | 04-30-2009 |
20090116572 | COMMUNICATION APPARATUS AND COMMUNICATION METHOD - A communication apparatus in which only a terminal having a specific positional relationship can perform communication through a relatively simple arrangement. When initial setting is performed or communication is started, a timing calculating section ( | 05-07-2009 |
20090128247 | INTERMITTENT OPERATION CIRCUIT AND MODULATION DEVICE - There is provided a small-size, low-power-consumption intermittent operation circuit capable of obtaining an output waveform having a rapid rise and fall. The intermittent operation circuit includes an active circuit ( | 05-21-2009 |
20090135974 | IMPULSE WAVEFORM GENERATING APPARATUS AND RADIO-FREQUENCY PULSE WAVEFORM GENERATING APPARATUS - An impulse waveform generating apparatus includes a multistage delay pulse signal generating part for generating a plurality of delay pulse signals by a timing signal; a signal source signal generating part for generating a signal source signal indicating the frequency component of an impulse waveform signal by the delay pulse signals; an envelope formation signal generating part for generating an envelope formation signal indicating the amplitude component of the impulse waveform signal by the delay pulse signals; and a mixer part for multiplying the signal source signal by the envelope formation signal to generate a prescribed impulse waveform signal. The impulse waveform generating apparatus generates the impulse waveform signal from the timing signal. Therefore, the circuit arrangement requires no digital-to-analog converter, the operational frequency of each element can be reduced, and the power consumption can be reduced. | 05-28-2009 |
20090168919 | PULSE MODULATION CIRCUIT AND PULSE MODULATION METHOD - Provided is a pulse modulation circuit capable of generating a pulse modulation signal with a steep rise and a desired pulse width at a desired timing not depending on a transmission signal sequence. In this circuit, a control signal generation unit ( | 07-02-2009 |
20090174494 | PULSE GENERATION CIRCUIT AND MODULATOR - It is an object of the invention to provide a pulse generation circuit and a modulator for realizing a high On/Off ratio in a small circuit scale and with lower power consumption. A short pulse generation circuit according to the invention includes an oscillator | 07-09-2009 |
20090177954 | CODE ERROR DETECTING DEVICE, WIRELESS SYSTEM AND CODE ERROR DETECTING METHOD - A code error detecting device that can more precisely detect a code error due to a delayed wave is disclosed. The code error detecting device includes a receiving antenna ( | 07-09-2009 |
20090232197 | PULSE MODULATED WIRELESS COMMUNICATION DEVICE - The transmission device includes a first transmission RF part for RF modulating the pulse signal generated at the timing of a clock signal so as to generate a clock RF signal and for outputting the clock RF signal to a synchronization signal channel; a transmission data generator for generating transmission data in synchronization with the timing of the clock signal; a PPM modulator for PPM modulating the transmission data and for outputting a PPM modulation signal; and a second transmission RF part for RF modulating the PPM modulation signal so as to generate a data RF signal and for outputting the data RF signal to a data signal channel different from the synchronization signal channel. The reception device receives reference synchronization information so as to maintain phase synchronization in data reception. | 09-17-2009 |
20090315605 | VARIABLE DELAY APPARATUS - It is an object of the invention to provide a variable delay apparatus in which, even immediately after the delay amount of the variable delay apparatus is changed, a signal of a timing that is different from a set delay amount is not output. The variable delay apparatus of the invention includes: a variable delay block | 12-24-2009 |
20100002676 | RADIO COMMUNICATION METHOD AND RADIO COMMUNICATION DEVICE - Provided is a radio communication method capable of easily realizing multi-access in an ad-hoc network using a directive radio wave. In the ad-hoc network using the directive radio wave of the method, two PNC (A | 01-07-2010 |
20100040168 | TRANSMITTING APPARATUS, RECEIVING APPARATUS AND COMMUNICATION SYSTEM - A transmitting apparatus, receiving apparatus and communication system are disclosed, and great improvement in an S/N ratio, preventing an actual throughput from decreasing, and preventing the number of circuits for synchronizing spread spectrum signals from increasing can be expected at the receiving apparatus side. The transmitting apparatus includes a pulse generating circuit, pulse repetition cycle determining circuit, peak power determining circuit, and modulator. The pulse generating circuit generates pulse strings, pulse repetition cycle determining circuit determines, based on a clock signal, a pulse repetition cycle of the pulse string generated by the pulse generating circuit. The peak power determining circuit determines a pulse peak power of the pulse string. The modulator modulates the pulse string with transmission data, and then generates a transmission signal. | 02-18-2010 |
20100086081 | MODULATION DEVICE AND DEMODULATION DEVICE - Provided is a modulation device which generates a phase modulation signal and an amplitude modulation signal and can correct an I/Q orthogonal shift and reduce degradation of the ON/OFF ratio. In the device, a phase shifter ( | 04-08-2010 |
20100166037 | UWB TRANSMISSION APPARATUS AND UWB TRANSMISSION METHOD - A UWB transmission apparatus that, in a system using a mixture of amplitude and phase modulation schemes, can support both of the amplitude and phase modulation schemes, while preventing the signal powers of amplitude-modulated signals from degrading. In this UWB transmission apparatus, if the modulation mode is of QPSK, a mapping part ( | 07-01-2010 |
20100237957 | DIFFERENTIAL OSCILLATION APPARATUS AND MODULATOR - It is an object of the present invention to shorten a time required until phases of output signals being output from two output terminals are inverted respectively from a start time of an oscillation in a differential oscillation apparatus. In a differential oscillation apparatus according to the present invention which includes a differential oscillator portion | 09-23-2010 |
20100239058 | WIRELESS APPARATUS - The present invention has an object to provide a wireless apparatus which is capable of correctly sampling a waveform of a pulse even when a shape of the pulse is varied. | 09-23-2010 |
20100266053 | WIRELESS COMMUNICATION METHOD, RADIO TRANSMITTER APPARATUS AND RADIO RECEIVER APPARATUS - A wireless communication method, a radio transmitter apparatus and a radio receiver apparatus wherein a signal sequence, which is used in a reception process using a first modulation scheme and can be generated from a signal sequence prepared for a reception process and used in a second modulation scheme, is employed, thereby achieving a performance to a similar extent to the reception process performance using the second modulation scheme. A radio transmitter apparatus ( | 10-21-2010 |
20100316043 | RADIO COMMUNICATION METHOD AND RADIO COMMUNICATION DEVICE - Provided is a radio communication method which can reduce the power consumption as compared to the conventional technique while realizing coexistence of a plurality of radio communication methods and can perform synchronization with a super frame of other radio communication device. The super frame has life confirmation slots ( | 12-16-2010 |
20120281740 | TRANSMITTING APPARATUS, RECEIVING APPARATUS AND COMMUNICATION SYSTEM - A transmitting apparatus, receiving apparatus and communication system are disclosed, and great improvement in an S/N ratio, preventing an actual throughput from decreasing, and preventing the number of circuits for synchronizing spread spectrum signals from increasing can be expected at the receiving apparatus side. The transmitting apparatus includes a pulse generating circuit, pulse repetition cycle determining circuit, peak power determining circuit, and modulator. The pulse generating circuit generates pulse strings, pulse repetition cycle determining circuit determines, based on a clock signal, a pulse repetition cycle of the pulse string generated by the pulse generating circuit. The peak power determining circuit determines a pulse peak power of the pulse string. The modulator modulates the pulse string with transmission data, and then generates a transmission signal. | 11-08-2012 |
20130127650 | A/D CONVERSION DEVICE - An A/D conversion device has means for generating a control clock signal having a cycle that is an integral multiple of a cycle of a reference clock signal; means for generating a shift voltage which varies every cycle of the reference clock signal while the cycle of the control clock signal is taken as one cycle, means for offsetting an analog signal by the shift voltage, means for A/D converting the offset analog signal every cycle of the reference clock signal signal, and means for averaging outputs from the A/D converter every cycle of the control clock signal. | 05-23-2013 |
20130136213 | RECEPTION SIGNAL PROCESSING DEVICE - A reception signal processing devices includes a converter which converts an analog signal amplified by an amplifying section to a digital signal, switches respectively provided in post-stages of variable gain amplifiers of the amplifying section, a bypass switch section which sets to open and close a path in which outputs of the variable gain amplifiers go around the variable gain amplifiers of the post-stages and are inputted to the converter, a switch controller which controls the switches and the bypass switch section and a DC offset controller which sets a correction value of a DC offset in accordance with a gain set to the variable gain amplifier as an object to be corrected. | 05-30-2013 |
20130140672 | VARIABLE INDUCTOR AND SEMICONDUCTOR DEVICE USING SAME - A variable inductor includes a spiral inductor, a loop conductor, and a switch for opening or short-circuiting an end of the loop conductor. The loop conductor is formed in a direction perpendicular to the spiral inductor and is used for adjusting the inductance value of the spiral inductor by opening or short-circuiting the end of the loop conductor by the switch. | 06-06-2013 |
20130141290 | ANTENNA DEVICE - Both ends of a feeder and both ends of a reflector of an antenna device are connected using a pair of diodes. When the diodes are turned on, a loop antenna is formed which loops the feeder, the diode, the reflector, a capacitor, and the diode, and the antenna device operates as the loop antenna. When the diodes are turned off, the antenna device operates as a Yagi-Uda antenna which is formed of the feeder, the reflector, and a wave guide. | 06-06-2013 |
20130189929 | WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD - A wireless communication device transmits and receives a signal by a wireless communication using a millimeter wave frequency band. The wireless communication device includes an antenna section having directivities in a plurality of different directions, an antenna control section adapted to form a directivity in a prescribed direction among the plurality of directivities of the antenna section, a direction and position estimation section adapted to estimate direction and position information of a wireless communication device to be communicated with, which is a target for the wireless communication, in accordance with a receiving signal received by the antenna section having the directivity formed, and a display section adapted to display the estimated direction and position information of the wireless communication device to be communicated with. | 07-25-2013 |
20140091885 | WIRING BOARD AND HIGH FREQUENCY MODULE USING SAME - A high frequency module wiring board includes a wiring section for high frequency transmission, and a solder resist layer formed upon the wiring section. The solder resist layer covers the wiring section so as to have an opening section at a part of the wiring section in a region extending within a predetermined distance from an input/output terminal of a chip component. | 04-03-2014 |
20140126168 | WIRELESS MODULE - A wireless module includes a first board ( | 05-08-2014 |
20140140031 | WIRELESS MODULE - A wireless module, in which a first board ( | 05-22-2014 |
20140145316 | WIRELESS MODULE - A wireless module includes a first board ( | 05-29-2014 |
20140151860 | WIRELESS MODULE - A wireless module includes a first board which has a first component mounted thereon, a second board which faces the first board and has a second component mounted thereon, a connecting member which is provided between the first board and the second board and transmits a signal between the first board and the second board, and a filling material with which a space between the first board and the second board including the connecting member is sealed. A conductive member for connecting a ground between the first board and the second board is arranged in a periphery of the connecting member. | 06-05-2014 |
20140159766 | HIGH-FREQUENCY MODULE AND METHOD FOR INSPECTING HIGH-FREQUENCY MODULE - A high-frequency module includes a high-frequency circuit chip, a wiring board having a wiring unit including connection pads which are flip-chip-connected to input and output terminals of the high-frequency circuit chip via bumps, a measurement circuit element that is disposed on a surface, opposed to the wiring board, of the high-frequency circuit chip and is connected between at least two terminals, connected to connection pads of the wiring unit, of the input and output terminals, or that is disposed on a surface, opposed to the high-frequency circuit chip, of the wiring board and is connected to the connection pads, and a detection conductor that is disposed on the high-frequency circuit chip or the wiring board at such a position as to be opposed to the measurement circuit element. | 06-12-2014 |
20140183722 | SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING SAME - This semiconductor device, which has electronic components provided in a cavity of a module having a cavity structure, can be prevented from being increased in size. In the device, the module having the cavity structure is provided with a plurality of components, for instance, an IC ( | 07-03-2014 |
20140249793 | CONTROL METHOD, CONTROL SERVER, AND COMPUTER-READABLE RECORDING MEDIUM - A control server according to an embodiment sorts a plurality of notebook PCs into a plurality of groups so that the total value of the remaining amounts is a value similar to the total value of the remaining amounts of the rechargeable batteries of a plurality of notebook PCs included in a different group. The control server according to the embodiment performs local search individually on the sorted groups, and generates a control plan for the individual notebook PCs. | 09-04-2014 |
20140347245 | ANTENNA AND WIRELESS MODULE - Provided are: an antenna, which makes it easy to change the design of a wireless communication apparatus having the antenna mounted thereon; and a wireless module. The antenna is provided with: an antenna component ( | 11-27-2014 |
20150070235 | ANTENNA DEVICE - An antenna device includes a first substrate, a feeder line which is disposed in the first substrate, a grounding conductor which is disposed in the first substrate, a first radiation element which is electrically connected to the feeder line in the first substrate, a second radiation element which is electrically connected to the grounding conductor and is disposed substantially in parallel with the first radiation element in the first substrate, a first reflector which is disposed in the first substrate, and a second reflector which is disposed in the first substrate so as to be separated by a predetermined distance from the first radiation element or the second radiation element in at least one of longitudinal directions of the first radiation element and the second radiation element. | 03-12-2015 |