ANRITSU CORPORATION Patent applications |
Patent application number | Title | Published |
20160077158 | TESTING DEVICE AND ITS CALIBRATION METHOD - According to one embodiment, a testing device includes a signal generator that generates a first signal output to a device under test, a channel selector provided after the signal generator and configured to select one of a plurality of channels, a signal receiver that receives the second signal supplied from the device under test, a correction value calculator that calculates a correction value for calibrating loss of a respective one of the channels, wherein the correction value calculator calculates a correction value for calibrating loss of a respective one of the channels included in the channel selector, based on a signal level received by the signal receiver via a loopback channel, when a calibration-level output state indicating a state where a signal level of the first signal generated by the signal generator reaches a predetermined transmission reference level of calibration is assumed. | 03-17-2016 |
20150281984 | TEST APPARATUS AND TEST METHOD - According to one embodiment, a test apparatus includes a reception buffer configured to store uplink data, a transmission buffer configured to store downlink data, an arithmetic processing module configured to execute reception arithmetic processing on the uplink data read from the reception buffer, and to execute transmission arithmetic processing to generate downlink data and store the generated downlink data in the transmission buffer, and a management module configured to provide, under a first predetermined condition, the arithmetic processing module with a first instruction to execute the reception arithmetic processing, and to provide, under a second predetermined condition, the transmitting/receiving module with a second instruction to transmit the downlink data stored in the transmission buffer. | 10-01-2015 |
20150036134 | PHYSICAL QUANTITY MEASURING SYSTEM AND PHYSICAL QUANTITY MEASURING METHOD - A physical quantity measuring system includes an optical source which emits a measurement light to fiber Bragg grating (FBG) lines containing FBGs connected in cascade by an optical fiber, an optical switch including a common port for receiving the measurement light from the optical source, and input/output ports connected to the FBG lines, the optical switch outputting the measurement light, from the common port to each of the input/output ports at different time points, a wavelength separator which receives light reflected from the respective FBGs of the FBG lines, and separating the reflected light into a plurality of component lights having predetermined wavelengths, after the measurement light is output from the input/output ports, and optical receivers which receives the component lights from the wavelength separator and detects light intensities of the component lights. | 02-05-2015 |
20150015503 | SIGNAL PROCESSING DEVICE AND SIGNAL PROCESSING METHOD - To provide a signal processing device which enable the user to rapidly repeat an operation of changing to a different resolution with a fingertip touch in the line of sight to a displayed graph. A display unit | 01-15-2015 |
20140323059 | MOBILE COMMUNICATION TERMINAL TEST DEVICE AND MOBILE COMMUNICATION TERMINAL TEST METHOD - It is possible to easily check the state of cells when communication using a plurality of cells is tested. A mobile communication terminal test device | 10-30-2014 |
20140294199 | SIGNAL ANALYSIS APPARATUS AND SIGNAL ANALYSIS METHOD - To provide a signal analysis apparatus and a signal analysis method which can expand a dynamic range. A spectrum analyzer | 10-02-2014 |
20140292447 | RADIO WAVE HALF MIRROR FOR MILLIMETER WAVE BAND AND METHOD OF FLATTENING TRANSMITTANCE THEREOF - To provide a radio wave half mirror for a millimeter wave band which can flatten transmittance characteristics and a method of flattening the transmittance of the radio wave half mirror for a millimeter wave band. A radio wave half mirror | 10-02-2014 |
20140292305 | MILLIMETER-WAVE BAND SPECTRUM ANALYSIS DEVICE AND ANALYSIS METHOD - An input signal Sx in a first millimeter-wave frequency band higher than 100 GHz is input to a millimeter-wave band filter | 10-02-2014 |
20140242976 | FADING SIMULATOR AND FADING SIMULATION METHOD - A fading simulator is provided, which includes a noise generator that generates an additive white Gaussian noise signal, receives a test signal to be input to a mobile communication terminal as a test target, and adds, to the test signal, a radio wave scattering effect, using the additive white Gaussian noise signal. The fading simulator is provided with setting means for setting for causing the noise generator to generate a same additive white Gaussian noise signal as the additive white Gaussian noise signal in the first test, when a first test is performed on the mobile communication terminal, and also for setting for causing the noise generator to generate the additive white Gaussian noise signal of the predetermined level when a second test for re-simulating the first test is performed after the first test. | 08-28-2014 |
20140242919 | TEST SIGNAL GENERATION APPARATUS AND METHOD BASED ON LTE-ADVANCED SYSTEM - To provide a technique for simplifying a parameter setting process required to generate a test signal based on an LTE-Advanced system. Carrier arrangement designation means | 08-28-2014 |
20140233623 | SIGNAL GENERATION DEVICE, MOBILE COMMUNICATION TERMINAL TEST DEVICE INCLUDING THE SAME, SIGNAL GENERATION METHOD, AND MOBILE COMMUNICATION TERMINAL TEST METHOD - To provide a mobile communication terminal test device that can generate a signal with amplitude-frequency characteristics or phase-frequency characteristics which are changed over time. A mobile communication terminal test device | 08-21-2014 |
20140215281 | TESTING APPARATUS AND TEST DISPLAY METHOD - A testing apparatus includes a scenario processing unit that executes a test scenario for operating the testing apparatus to imitate the operation of a base station, a communication unit capable of transmitting and receiving a message to and from a mobile communication terminal, a layer processing unit for processing a message for each layer, a log data storing unit for storing log data indicating transmission of messages between the layers, and a display controller for creating a transmission schedule based on the extracted data associated with system information and causing a display unit to display the transmission schedule. The transmission schedule is written in a tabular form in which a block type of the system information is displayed at a position to which a frame for transmitting the system information is allocated. | 07-31-2014 |
20140206345 | SCENARIO GENERATION DEVICE AND SCENARIO GENERATION METHOD - A scenario generation device includes: a system information schedule generation unit that displays, a first transmission schedule setting environment with a table form that includes a plurality of setting fields which correspond to the positions of a plurality of frames that can be allocated to transmission of system information in mobile communication and to which a type name of the system information can be set, receives the type name which is input to the setting field corresponding to the position of the frame selected, and generates a transmission schedule of the system information on the basis of the input result; and a scenario generation unit that generates a test scenario which is used in a pseudo-base station apparatus and in which a communication sequence related to the system information is described on the basis of the transmission schedule of the system information. | 07-24-2014 |
20140204912 | TEST DEVICE AND TEST METHOD - To provide a test device and a test method which enable a tester to easily check the allocation of physical channels when testing a mobile communication terminal which performs communication using a time division duplex system and a code division multiple access system. | 07-24-2014 |
20140162630 | MOBILE TERMINAL TEST DEVICE AND METHOD - At the beginning of the operation of a mobile terminal | 06-12-2014 |
20140162604 | MOBILE TERMINAL TEST DEVICE AND METHOD - At the beginning of the operation of a mobile terminal | 06-12-2014 |
20140128003 | MOBILE COMMUNICATION TERMINAL TEST SYSTEM AND MOBILE COMMUNICATION TERMINAL TEST METHOD - The present invention relates to a test system for displaying log information about the communication of a plurality of pseudo-base stations such that each pseudo-base station can be identified. A mobile communication terminal test system includes a display device which is connected to a plurality of pseudo-base station apparatuses through a network, receives a packet transmitted from each of the plurality of pseudo-base station apparatuses, and displays a communication log between layers on a display unit on the basis of log data included in the packet. The display device includes an information storage unit that stores information associated with the address of each of the plurality of pseudo-base station apparatuses in advance and a log data storage unit that stores the log data such that the pseudo-base station apparatus which has performed the communication can be identified. | 05-08-2014 |
20140126618 | TESTING APPARATUS AND METHOD FOR MIMO SYSTEMS - Four (=M) transmission information signals are output from transmission information generating unit to linear transform unit, where they are transformed into synthesis signals by linear transform expressed by multiplication by a 2×4 matrix having complex numbers as elements. Signal processors perform signal processing corresponding to the modulation technique of test target on synthesis signals. On the resultant signals, 2×2 channel processing unit performs 2×2 pseudo channel processing, thereby forming equivalent M×N channels. Parameter setting unit sets information necessary to acquire desired M×N channel characteristics as the synthesis characteristics of linear transform unit and N×N channel processing unit. | 05-08-2014 |
20140092750 | MOBILE TERMINAL TEST APPARATUS AND MOBILE TERMINAL TEST METHOD - To provide a mobile terminal test apparatus and a mobile terminal test method capable of setting the setting items more easily and more accurately than in the related art and testing mobile terminals. A mobile terminal test apparatus | 04-03-2014 |
20140082439 | TEST DEVICE FOR MOBILE COMMUNICATION TERMINAL AND TEST METHOD FOR MOBILE COMMUNICATION TERMINAL - A test device | 03-20-2014 |
20140080424 | DEVICE TO TEST MOBILE TERMINAL AND TESTING METHOD THEREOF - A mobile terminal testing device includes a reproduction unit that reproduces a BB signal to output at least one reproduced BB signal, an adder that adds a BB signal that are frequency-shifted and a reproduced BB signal to output an added BB signal, an up-converter that generates a multicarrier test signal by making a frequency conversion of the added BB signal of an I phase and Q phase and outputs the multicarrier test signal to UE, and an analyzer that analyzes a response signal output by the UE in response to the multicarrier test signal and the analyzer includes a throughput calculation unit that calculates throughput for the multicarrier test signal and an RSRP acquisition unit that acquires RSRP. | 03-20-2014 |
20140035701 | DIFFERENTIAL SIGNAL TRANSMISSION LINE - A differential terminal | 02-06-2014 |
20140029440 | CARRIER AGGREGATION TESTING METHOD AND APPARATUS FOR PERFORMING THE SAME - A carrier aggregation testing method for a wireless communication system, includes the steps of allocating a primary component carrier between a User Equipment and a carrier aggregation testing apparatus being configured to act as a Base Station with regard to the User Equipment, allocating at least one functionally limited secondary component carrier between the User Equipment and the carrier aggregation testing apparatus, aggregating the at least one functionally limited secondary component carrier with the primary component carrier, executing a carrier aggregation test being based on a functionality of the at least one functionally limited secondary component carrier. | 01-30-2014 |
20130314179 | MILLIMETER WAVEBAND FILTER AND METHOD OF MANUFACTURING THE SAME - A transmission line which allows electromagnetic waves in a predetermined frequency range of a millimeter waveband to propagate in a TE10 models formed by a first waveguide and a second waveguide. A resonator is formed by electric wave half mirrors fixed to the first waveguide and the second waveguide. The second waveguide has a structure in which a first transmission line forming body has a plate shape and has a square hole forming the first transmission line formed to pass therethrough from one surface toward an opposite surface, a second transmission line forming body has a plate shape and has a square hole forming the second transmission line formed to pass therethrough from one surface toward an opposite surface, and the first transmission line forming body and the second transmission line forming body are connectable and separable. | 11-28-2013 |
20130260694 | FADING SIMULATOR AND FADING SIMULATION METHOD - A fading simulator includes a transition time setting means that sets up a predetermined transition time, at the time of switching of a fading setting using a fading parameter, between the fading setting before switching and the fading setting after switching, and a smoothing processing means that smoothly changes a value before the switching to a value after the switching with respect to at least one of a delay parameter, a Doppler effect parameter and a path loss parameter, during the transition time. | 10-03-2013 |
20130251015 | OPTIMIZATION METHOD OF OPTIMALLY SETTING EMPHASIS AND OPTIMIZATION DEVICE FOR OPTIMALLY SETTING EMPHASIS - In an emphasis optimization device, a calculating unit calculates an inverse characteristic of an amplitude characteristic based on the amplitude characteristic of a transmission path, and an inverse Fourier transform unit performs an inverse Fourier transform on the inverse characteristic to obtain an impulse response. An extracting unit extracts, from the obtained impulse response, an impulse response corresponding to the number of taps necessary for emphasis to be added to a digital signal to be transmitted on the transmission path. An emphasis amount calculating unit converts the extracted impulse response into a value of the emphasis to calculate an emphasis amount. | 09-26-2013 |
20130211781 | MEASUREMENT APPARATUS AND MEASUREMENT METHOD - To provide a measurement apparatus and measurement method capable of shortening the measurement time, a measurement apparatus | 08-15-2013 |
20130210371 | MOBILE COMMUNICATION TEST APPARATUS AND TEST METHOD - There is provided a mobile communication test apparatus for performing an operation test of a mobile communication apparatus which performs wireless communication by bundling a plurality of frequency blocks. The apparatus includes: a logical channel distribution section | 08-15-2013 |
20130210370 | MEASUREMENT APPARATUS AND MEASUREMENT METHOD - The measurement apparatus | 08-15-2013 |
20130200923 | JITTER MEASURING TRIGGER GENERATOR, JITTER MEASURING APPARATUS USING THE SAME, METHOD OF GENERATING JITTER MEASURING TRIGGER, AND METHOD OF MEASURING JITTER - A phase adjuster | 08-08-2013 |
20130161516 | OPTICAL PULSE TESTER USING LIGHT EMITTING DEVICE - To provide a small and high-performance optical pulse tester using a light emitting device including semiconductor light emitting element capable of emitting light beams with wavelengths in a plurality of wavelength ranges with a high optical output. An optical pulse tester includes: a light emitting device including a semiconductor light emitting element having first and second light emitting end facets formed by cleavage respectively, and a light emitting element driving circuit which applies a driving current to each of a plurality of active layers; a light receiving section which converts returned light of the optical pulse from the optical fiber to be measured into an electric signal; and a signal processor which analyzes a loss distribution characteristic of the optical fiber to be measured on the basis of the electric signal converted by the light receiving section. | 06-27-2013 |
20130135063 | MILLIMETER WAVEBAND FILTER AND METHOD OF VARYING RESONANT FREQUENCY THEREOF - The millimeter waveband filter includes: a transmission line that is formed by a waveguide which propagates electromagnetic waves with a predetermined frequency range of a millimeter waveband from one end to the other end in a TE10 mode; and a pair of radio-wave half mirrors that are disposed opposite each other with a space interposed therebetween so as to block the inside of the transmission line and have planar shapes and a characteristic of transmitting a part of the electromagnetic waves with the predetermined frequency range and reflecting a part thereof. In the electromagnetic waves incident from the one end side of the transmission line, a frequency component centered on a resonant frequency of a resonator, which is formed between the pair of radio-wave half mirrors, is selectively output from the other end of the transmission line. | 05-30-2013 |
20130135062 | RADIO-WAVE HALF MIRROR FOR MILLIMETER WAVEBAND AND METHOD OF SMOOTHING TRANSMITTANCE - A radio-wave half mirror for millimeter waveband is fixed inside a transmission line propagating electromagnetic waves of millimeter waveband in a single mode so as to transmit a part of incident electromagnetic waves and reflect a part thereof. The radio-wave half mirror includes: a half mirror body where a slit for transmitting electromagnetic waves is provided on a metal plate; and a dielectric plate that is provided on one surface side of the half mirror body so as to form a dielectric resonator which resonates at a frequency determined by the thickness and the permittivity, and has a transmittance characteristic having a degree of inclination substantially the same as that of the half mirror body in a slope which is inverse to a slope of a transmittance characteristic of the half mirror body in a desired frequency range of the millimeter waveband. | 05-30-2013 |
20130085737 | RELAY NODE SIMULATOR AND TEST METHOD - A relay node simulator includes a marker display control unit that correlates a base station marker, a relay node marker, and a terminal marker to a predetermined coordinate system and allows the makers to be displayed on an operation screen, and that allows at least one of the markers to be displayed on the operation screen in a movable manner in accordance with an operation input, a position specifying unit that specifies respective positions of the respective markers in the coordinate system, and a pattern display control unit that allows a magnitude of a characteristic value relating to a first RF signal or a second RF signal to be displayed on the operation screen as a discriminable pattern, wherein, a test signal to which the characteristic value corresponding to the specified position is applied is output. | 04-04-2013 |
20130084853 | SYSTEM FOR TESTING MOBILE COMMUNICATION APPARATUS AND TEST METHOD THEREFOR - In a system for testing a mobile communication device under test, a calculation part calculates, before a control part starts processing according to a designated measurement sequence, a total value of a data amount to be acquired as an analysis target by a transmission/reception unit in the designated measurement sequence. A determination part determines whether the calculated total value of the data amount exceeds a permissible value which has been set in advance according to a predetermined capacity of a reception data memory. If the determination part determines that the calculated total value exceeds the permissible value, the control part displays the determination result on the display unit. | 04-04-2013 |
20130064117 | RELAY NODE SIMULATOR AND TEST METHOD - A relay node simulator that outputs a test signal obtained by simulating a signal in which a first RF signal from a base station and a second RF signal transmitted to a mobile communication terminal by a relay node receiving the first RF signal are multiplexed, the relay node simulator including a relay processing unit that generates a second baseband signal on the basis of a first baseband signal, a delay processing unit that provides a predetermined delay to the second baseband signal, a gain adjustment unit that changes a level of the first baseband signal, an adder that adds the first baseband signal and the second baseband signal, and a transmission unit that converts an added signal into an RF signal and transmits a converted signal as the test signal. | 03-14-2013 |
20130012139 | SIGNAL GENERATING DEVICE AND SIGNAL GENERATING METHOD - To provide a signal generating device and a signal generating method capable of correcting the frequency characteristics of the level of a broadband radio-frequency signal. A signal generating device | 01-10-2013 |
20130005384 | MOBILE COMMUNICATION TERMINAL TEST DEVICE AND MOBILE COMMUNICATION TERMINAL TEST METHOD - To provide a mobile communication terminal test device and a mobile communication terminal test method capable of enabling a tester to intuitively know a set transmission power variation. A mobile communication terminal test device | 01-03-2013 |
20130005373 | COMMUNICATION TEST DEVICE AND COMMUNICATION TEST METHOD - A communication test device can assist in identifying a cause of a change in throughput of a mobile communication terminal. The communication test device accumulates (a) trace data on a specific unit of data complying with a designated communication standard, and (b) throughput data on throughput of the specific unit of data transmitted to and received from a mobile communication terminal. Trace data and throughput data are extracted from the accumulation, and trace data is displayed. A graph of the variation of throughput with time is displayed on the display unit. Trace data corresponding to a time designated by an operating unit can also be displayed. | 01-03-2013 |
20130005271 | COMMUNICATION TEST DEVICE AND COMMUNICATION TEST METHOD - A communication test device can assist in identifying a cause of a change in throughput of a mobile communication terminal. The communication test device accumulates (a) trace data on a specific unit of data complying with a designated communication standard, and (b) throughput data on throughput of the specific unit of data transmitted to and received from a mobile communication terminal. Trace data and throughput data are extracted from the accumulation, and trace data is displayed. A graph of the variation of throughput with time is displayed on the display unit. Trace data corresponding to a time designated by an operating unit can also be displayed. | 01-03-2013 |
20130003598 | MOBILE COMMUNICATION TERMINAL TEST DEVICE AND MOBILE COMMUNICATION TERMINAL TEST METHOD - To provide a mobile communication terminal test device and a mobile communication terminal test method capable of displaying the theoretical value of a packet transmission rate. A mobile communication terminal test device | 01-03-2013 |
20120327796 | TEST DEVICE AND TEST METHOD FOR MOBILE COMMUNICATION TERMINAL - To reduce the load of a communication process performed between pseudo base stations of different communication standards. An LTE pseudo base station unit | 12-27-2012 |
20120327782 | TEST DEVICE AND TEST METHOD FOR MOBILE COMMUNICATION TERMINAL - It is possible to check the settings of multiplex communication for test or the state of multiplex communication during the test. A test device tests whether a mobile communication terminal, which is a test target, performs a communication operation normally and displays a list of at least the address of the mobile communication terminal and information for identifying a communication partner of the mobile communication terminal as multiplex communication related information when the mobile communication terminal performs multiplex communication on a multiplex communication related display unit | 12-27-2012 |
20120310583 | DEVICE AND METHOD FOR TESTING APD MEASURING DEVICE - To accurately test the operating state of the APD measuring device. A test device 40 includes a test signal generator 41 that generates a test signal corresponding to the center frequency of a signal to be measured and a control unit 42 that variably controls the amplitude level of a test signal in the dynamic range of an APD measuring device 1 at random, in order to test the operating state of the APD measuring device 1. | 12-06-2012 |
20120300876 | QUADRATURE MODULATOR, SIGNAL GENERATING DEVICE, AND QUADRATURE MODULATION METHOD - To provide a quadrature modulator, a signal generating device, and a quadrature modulation method capable of correcting a gain balance error, a zero offset error, and an orthogonality error that occur during quadrature modulation. The quadrature modulator | 11-29-2012 |
20120300825 | SIGNAL GENERATOR, SIGNAL GENERATING SYSTEM, AND SIGNAL GENERATING METHOD - To provide a signal generator, a signal generating system, and a signal generating method capable of repeatedly generating an arbitrary waveform and making the phases of the head and tail of the generated waveform continuous with each other, without changing the frequency of the waveform. A signal generator ( | 11-29-2012 |
20120273659 | PHOTOELECTRIC CONVERSION CIRCUIT - There are provided a photodiode | 11-01-2012 |
20120257888 | OPU FRAME GENERATING DEVICE AND OPU FRAME TEST DEVICE - An OPU frame generating device includes a frequency setting unit that sets a frequency corresponding to a bit rate of data which can be stored in a payload area, a parameter calculating unit that calculates a parameter C | 10-11-2012 |
20120252372 | MOBILE COMMUNICATION TERMINAL TEST SYSTEM, ANALYSIS METHOD, AND ANALYSIS PROGRAM - To enable addition or changes of functions with changes of communication standards in a mobile communication terminal test system. A mobile communication terminal test system includes a transceiver which has a control unit configured to append input information to acquired waveform data, a signal analysis unit which executes an analysis program, and a signal analyzer which is provided separately from the transceiver. The analysis program has a processing program which is provided for each type of arithmetic processing on the waveform data, a control program which is provided for each communication system, selects one or more processing programs for each test item, and executes the processing programs, and a switching program which specifies a communication system and a test item on the basis of the input information, and selects and executes a control program. | 10-04-2012 |
20120214479 | TEST APPARATUS FOR TESTING MOBILE COMMUNICATION TERMINAL AND MESSAGE DISPLAY METHOD FOR DISPLAYING MESSAGE ASSOCIATED WITH THE TESTING - A test apparatus for a mobile communication terminal is provided with a pseudo base station and display and control units. The control unit includes a analysis unit and a tag addition unit. The analysis unit acquires and analyzes the messages from the base station to take out information from the messages. The tag addition unit detects a group of series messages which have a mutual association and are consecutive in time sequence among the messages analyzed and to add a tag for identifying each group of messages to a detected group of messages. The control unit displays the tag together with the series of messages so as to identify the respective groups of messages. | 08-23-2012 |
20120212492 | MOBILE COMMUNICATION TERMINAL TESTING APPARATUS AND METHOD OF TESTING MOBILE COMMUNICATION TERMINAL - There are provided a mobile communication terminal testing apparatus and a method of testing a mobile communication terminal capable of displaying an EVM for each slot. A mobile communication terminal testing apparatus | 08-23-2012 |
20120200424 | SMART METER EVALUATION DEVICE AND SMART METER EVALUATION METHOD - [Task] To provide a smart meter evaluation device and a smart meter evaluation method capable of evaluating the operating state of a smart meter. | 08-09-2012 |
20120188043 | COIL AND METHOD FOR MANUFACTURING THE SAME - [Task] There are provided a coil that is simple in structure and excellent in high frequency characteristics and a method for manufacturing the same. | 07-26-2012 |
20120044481 | SEMICONDUCTOR LIGHT EMITTING ELEMENT, DRIVING METHOD OF SEMICONDUCTOR LIGHT EMITTING ELEMENT, LIGHT EMITTING DEVICE, AND OPTICAL PULSE TESTER USING LIGHT EMITTING DEVICE - [Task] To provide a semiconductor light emitting element capable of emitting light beams with wavelengths in a plurality of wavelength ranges with a high optical output, a driving method of a semiconductor light emitting element capable of making a semiconductor light emitting element that can emit light beams with wavelengths in a plurality of wavelength ranges operate with a high optical output, a light emitting device, and a small and high-performance optical pulse tester using the light emitting device. | 02-23-2012 |
20120042287 | EMPHASIS-ADDING SYSTEM AND EMPHASIS-ADDING METHOD - A display part is provided with a display screen with a horizontal axis representing a time and a vertical axis representing an amount of modulation and a pre-emphasis waveform image is displayed on the display screen. In the pre-emphasis waveform image, a cursor can be arranged on a tap which corresponds to a portion in which a bit can be emphasized. An emphasis waveform addition part generates an emphasis waveform corresponding to the pre-emphasis waveform image on the display screen, based on an amount of amplitude changed according to movement of the cursor, and adds the emphasis waveform to the test signal. Thus, a user is allowed to make a setting with intuitive operation. | 02-16-2012 |
20120038909 | OPTICAL PULSE TEST APPARATUS AND METHOD OF TESTING OPTICAL TRANSMISSION PATH - [Task] To enable a test of an optical transmission path using an MMF with a simple configuration in an optical pulse test apparatus which is used for an SFM for long-distance transmission. | 02-16-2012 |
20110268170 | DATA SIGNAL QUALITY EVALUATION APPARATUS - When an operating unit is operated to designate an arbitrary width W and an arbitrary angle θ, a mask region limiting unit limits the effective range of a reference mask set for compliance measurement of the data signal to be evaluated by a reference mask setting unit to the range determined by the designated width and angle and displays the limited effective range on a display unit. | 11-03-2011 |
20110196515 | MEASUREMENT PARAMETER INPUT CONTROL DEVICE AND MEASUREMENT PARAMETER INPUT CONTROL METHOD - A measurement parameter input control method and a measurement parameter input control device are provided which can intuitively change measurement parameters, which are set for a target device and are necessary for various measuring processes, with high operability. The measurement parameter input control device includes: a parameter processing section that acquires measurement parameter information including measurement parameters from a target device and that rewrites changed parameters which are measurement parameters after the changing to the target device; a parameter identifying section that identifies the types of the parameters in the acquired measurement parameter information and outputs soft key constructing information for constructing a parameter setting soft key based on the identified measurement parameter information, a display control section that includes a soft key controller displaying and controlling the parameter setting soft key based on the measurement parameter information on a display screen of a display unit on the basis of the soft key constructing information from the parameter identifying section; and an input unit that operates the parameter setting soft key displayed on the display unit. | 08-11-2011 |
20110150062 | SPECTRUM ANALYZER AND SPECTRUM ANALYSIS METHOD - There is provided a spectrum analyzer and a spectrum analysis method capable of promptly performing measurement while preventing the spectrum waveform caused by the fractional spurious components from being displayed. | 06-23-2011 |
20110141934 | MOBILE COMMUNICATION TERMINAL TEST APPARATUS AND TEST RESULT DISPLAY METHOD - [Task] To provide a mobile communication terminal test apparatus capable of displaying an EVM or a transmission power measurement result in a frequency division multiple access communication scheme by distinguishing between the allocation band and the non-allocation band. | 06-16-2011 |
20110119622 | WINDOW DISPLAY CONTROL APPARATUS AND METHOD OF CONTROLLING WINDOW DISPLAYS - A plurality of display windows corresponding to a plurality of applications is formed from a plurality of fixed window frames that is displayed with regularity on one display screen of a display unit. A display control unit performs display control by sequentially displaying displays relating to the plurality of applications in a switching manner in the order in which the plurality of applications is selected in a time series in the fixed window display frames that are displayed with regularity on one display screen of the display unit when the plurality of applications is selected in the time series. | 05-19-2011 |
20110096799 | SEMICONDUCTOR LIGHT EMITTING ELEMENT AND TUNABLE WAVELENGTH LASER LIGHT SOURCE - The present invention provides a semiconductor light emitting element that can obtain oscillation at desired wavelengths. The semiconductor light emitting element comprises a semiconductor substrate | 04-28-2011 |
20110053622 | FILTER UNIT, MOBILE COMMUNICATION TERMINAL TEST SYSTEM, AND MOBILE COMMUNICATION TERMINAL TEST METHOD - [Problem] To provide a band stop filter unit, a mobile communication terminal test system, and a mobile communication terminal test method that are flexibly adaptable to the addition/change of a specification in a frequency band for mobile communication. | 03-03-2011 |
20110050705 | SIGNAL ANALYZING APPARATUS - The present invention is to provide a signal analyzing apparatus which can easily identify a pattern high in error rate and a pattern causing bit errors in comparison with the conventional device. In a signal analyzing apparatus ( | 03-03-2011 |
20110043418 | RADIATED POWER MEASUREMENT METHOD, RADIATED POWER MEASUREMENT COUPLER AND RADIATED POWER MEASUREMENT APPARATUS - In a method of measuring a radiation power generated from a DUT from an output of a measurement antenna, wherein the DUT is arranged in an ellipsoid enclosed space such that a radiation center of the radio wave is substantially coincided with the neighborhood of a first focal point. The radio wave radiated from the DUT and reflected from the wall surface is received by a receiving antenna arranged in the neighborhood a second focal point thereby to measure the total radiated power of the DUT from the output signal of the receiving antenna. One of the DUT and the receiving antenna is moved along the axis passing through the first and second focal points, and based on the measurement value maximizing the output signal power of the receiving antenna, calculating the total radiated power of the DUT. | 02-24-2011 |
20110041011 | TEST SIGNAL GENERATING APPARATUS - The present invention is to provide a test signal generating apparatus which can generate a test signal for testing a device that dynamically change its operational state in response to a signal or the like. The test signal generating apparatus includes: a pattern storage unit | 02-17-2011 |
20110026573 | DATA SIGNAL GENERATING APPARATUS - It is an object of the present invention to provide a data signal generating apparatus which is small in size, and can output the serial data in a desired sequence without assuming an indefinite state as well as being capable of dealing with the jitter measurement. In the data signal generating apparatus according to the present invention, synchronization means | 02-03-2011 |
20100316105 | APPARATUS FOR MEASURING JITTER TRANSFER CHARACTERISTIC - An apparatus for rapidly measuring jitter transfer characteristics is provided. A modulation signal generator generates a modulation signal M including a plurality of sinusoidal components having known amplitudes m | 12-16-2010 |
20100310206 | OPTICAL MODULATOR - A technical problem related to a traveling wave electrode type of optical modulator comprising a substrate having the electro-optical effect, optical waveguides formed in the substrate, and a traveling wave electrode formed above the substrate includes improvement of the characteristics such as optical modulation bandwidth, driving voltage, and characteristic impedance of the traveling wave electrode type of optical modulator. To solve the problem, the structure of ridge portions is optimized which is formed in such a manner that a part of the substrate at regions where electric field generated by a high frequency electric signal traveling through the traveling wave electrode is strong is reduced in thickness by digging. Further, a buffer layer is formed over the substrate where the ridge portions are formed and a conducting layer is formed over the buffer layer. The thickness of at least one part of the buffer layer along the normal line of a side surface of the ridge portions is less than the thickness of the buffer layer on a bottom surface between the ridge portions formed by digging and/or the thickness of the buffer layer on a top part of the ridge portions. | 12-09-2010 |
20100271622 | Optical time domain reflectometer and method for testing optical fiber using optical pulse - When a measurement position is specified by a marker during real time measurement, a marker level acquisition unit acquires a waveform level from waveform data stored in a waveform memory. A level comparison unit judges whether the waveform level acquired by the maker level acquisition unit is within an effective measurement level range set in accordance with a currently selected attenuator (ATT) value. If the level comparison unit judges that the waveform level is out of the effective measurement level range, an ATT value modification unit modifies the ATT value to a new ATT value so that the waveform level is contained in the corresponding effective measurement level range. According to the new ATT value, a control performs measurement of an optical fiber to be measured so that a waveform can be observed with a preferable SN ratio above a predetermined value according to the measured waveform displayed on a screen of a display unit. | 10-28-2010 |
20100220778 | FREQUENCY CONVERTING SYSTEM - In a frequency converting system, an input signal x(t) is supplied to a signal branching section for dividing a predetermined frequency domain into M bands, extracting signal components of the respective divided bands. The respective signal components and local signals each including a frequency difference corresponding to a predetermined intermediate frequency with respect to a center frequency of each band are input to a frequency converting part. The signals of the respective divided bands are converted into signals of intermediate frequency bands each including the predetermined intermediate frequency as the center frequency, the conversion outputs are sampled by using a common clock signal, whereby the conversion outputs are converted into digital signals. Further, after being subjected to phase correction processing, the digital signals are subjected to frequency conversion and combination processing by a signal regeneration part. | 09-02-2010 |
20100220777 | TEST APPARATUS FOR 64B/66B ENCODING PROCESS - The present invention provides a test apparatus for a | 09-02-2010 |
20100209040 | OPTICAL MODULATOR - In an optical modulator comprising substrate | 08-19-2010 |
20100205235 | M-SEQUENCE GENERATOR, PROVIDING METHOD THEREOF, AND RANDOM ERROR GENERATING DEVICE IN WHICH M-SEQUENCE GENERATOR IS USED - An M-sequence generator includes EXCLUSIVE-OR gates feeding back pieces of bit data from m number of series registers to the registers in response to a clock. A period of a cyclic group {(α | 08-12-2010 |
20100189001 | SIGNAL ANALYZER - A signal analyzer for facilitating observation of a relative value, i.e., the quantity of variation in power between slots, at the time of analyzing the power of a signal which is to be measured and subjected to power control in units of slot. An analyzing section detects the power value of every slot of a signal which is to be measured and received at a receiving section, and calculates the relative value of the power value between each slot and a slot separated therefrom by a predetermined number. A display control section displays the relative values thus calculated as a graph at a display section by arranging them continuously in time series. | 07-29-2010 |
20100174971 | ERROR ADDITION APPARATUS - An error addition apparatus receives a data signal D having a frame format having a specific signal inserted into its front, adds errors to the data signal D, and outputs a resulting signal. The apparatus has an error addition regulation unit for receiving a frame synchronization signal F, indicative of a timing at which the front of the frame of the data signal has been inputted, and regulating the errors such that the errors are added to positions other than a region of the specific signal. Accordingly, errors are not added to a specific signal. | 07-08-2010 |
20100158428 | OPTICAL MODULATOR - Herein disclosed is an optical modulator, comprising: an optical waveguide ( | 06-24-2010 |
20100153045 | METHOD, COUPLER AND APPARATUS FOR MEASURING RADIATED POWER - In a method for measuring a radiation power, an elliptical mirror is prepared so as to have a elliptical spherical space enclosed by a metal wall surface, the space having a rotating axis passing through two focal points. A device under test is placed in a position of one of the two focal points such that a center of radiation of a radio wave substantially coincides with the focal point, and a receiving antenna is placed in an position of an other one of the two focal points. The device under test is caused to radiate a radio wave and the radiated radio wave is reflected at the wall surface to allow the receiving antenna to receive the radio wave. Then, total radiation power of the radio wave is measured at a measurement end of the receiving antenna in accordance with an output signal from the receiving antenna. | 06-17-2010 |
20100150218 | JITTER GENERATION APPARATUS, DEVICE TEST SYSTEM USING THE SAME, AND JITTER GENERATION METHOD - A jitter generation apparatus for applying a phase modulation to a PLL is controlled by a control unit so as to output a signal with the desired jitter based on a parameters. When a switching unit is switched to a first state, the control unit controls first and second level control units so that the desired jitter in which an amplitude of a first modulation signal matches the parameter is added to an output signal from a voltage controlled oscillator unit, and passes through a quadrature modulator. When the switching unit is switched to the second state, the control unit controls the first and second level control units so that a quadrature modulation is applied to a local signal, which is input to the quadrature modulator without adding any jitter to an output signal from the voltage controlled oscillator unit, and a quadrature-modulated local signal is output. | 06-17-2010 |
20100120371 | MOBILE TERMINAL TESTER AND MOBILE TERMINAL TEST METHOD - The object of the present invention is to provide a mobile terminal tester which can reduce the production cost from that of the conventional mobile terminal tester. The mobile terminal tester according to the present invention comprises a plurality of base transceiver station simulators ( | 05-13-2010 |
20100093283 | COMMUNICATION TEST DEVICE AND COMMUNICATION TEST METHOD - It is an object of the present invention to provide a communication test device which can assist in identifying a cause of the change in throughput of a mobile communication terminal. The communication test device includes accumulating means for accumulating trace data on a specific unit of data complying with a designated communication standard, and throughput data on throughput of the specific unit of data transmitted to and received from a mobile communication terminal, extracting means for extracting trace data and throughput data from the accumulating means, trace display means for displaying trace data on a display unit, throughput display means for displaying a graph of the variation with time of throughput on the display unit, and time obtaining means for obtaining a time. The extracting means is adapted to extract, from the accumulating means, trace data corresponding to time designated by an operating unit. The trace display means is adapted to display the trace data corresponding to the time on the display unit. | 04-15-2010 |
20100054654 | Optical Modulation Device - Herein disclosed is an optical modulation device, comprising: a substrate | 03-04-2010 |
20100045999 | OPTICAL PHASE-MODULATION EVALUATING DEVICE - It is an object of the present invention to provide an optical phase modulation evaluating device that can measure and evaluate the precise degree of modulation in phase of an optical phase modulation signal in comparison with the conventionally-known optical phase modulation evaluating device. The optical phase modulation evaluating module includes: a bit delay device located on optical paths of the third and fifth light beams, and adapted to change the length of the optical paths to delay the third and fifth light beams by one bit per second; and an optical phase difference setting means for delaying either or both the ninth and tenth light beams by a designated phase angle which is not equal to zero, the optical phase difference setting means having a light transmissive plate located on an optical path for the ninth light beam, and a light transmissive plate located on an optical path for the tenth light beam. | 02-25-2010 |
20100031105 | RANDOM ERROR SIGNAL GENERATOR - In a random error signal generator, an M-sequence generation circuit outputs, in parallel, pieces of bit data stored in each register, a first generation circuit sequentially outputs first reference values C which are changed by a predetermined value in response to clocks, a second generation circuit outputs a second reference value D which is shifted from the first reference value C by a range value E which is determined depending on an error rate p. A comparison and determination unit outputs random error signals to be error bits when a numeric value A of the bit data output exists between the first and second reference values C, D. The random error signal has the error rate p, the number of times of error occurrences follows Poisson distribution, and a distribution of adjacent error occurrence intervals follows a geometric distribution. | 02-04-2010 |
20090297087 | OPTICAL MODULATOR - Herein disclosed is an optical modulator, having: a substrate ( | 12-03-2009 |
20090282299 | EVALUATION METHOD OF RANDOM ERROR DISTRIBUTION AND EVALUATION APPARATUS THEREOF - A degree of conformity of error distribution of a digital signal to the Poisson distribution is quantitatively determined. The digital signal including error data, which is randomly generated at a predetermined error rate, is divided into data number of measurement units, wherein the data number is determined on the basis of the error rate. A sample number of the measurement units are acquired from the measurement units, and the number of errors contained in each measurement unit is measured as a measurement value. Further, the number of times of occurrence of each measurement value is calculated, a Poisson distribution function is calculated, and a degree of a bond between the Poisson distribution and the distribution of the number of times of occurrence is determined by using the chi-square goodness-of-fit test method. | 11-12-2009 |
20090279595 | WAVEFORM SHAPING DEVICE AND ERROR MEASUREMENT DEVICE - The object of the present invention is to provide a waveform shaping device and an error measurement device which can perform a waveform shaping operation with the sufficient amplitude margin, even if the mark ratio of the inputted data signal is significantly varied and the amplitude of the inputted data signal is decreased. The waveform shaping device according to the present invention comprises a voltage detector ( | 11-12-2009 |
20090256740 | Short-range radar and control method thereof - A transmitting unit of a short-range radar includes a first pulse generating unit, a second pulse generating unit, an oscillator and a switch, and while complying with the spectrum mask specified for a UWB short-range radar, emits a predetermined short pulse wave not interfering with the RR prohibited band or the SRD band into the space. The first pulse generating unit outputs a first pulse having the width larger than the width of the short pulse wave in a predetermined period. The second pulse generating unit outputs a second pulse having the width corresponding to the width of the short pulse wave during the period when the first pulse generating unit outputs the first pulse. The oscillator oscillates only during the period when the first pulse generating unit outputs the first pulse, and the switch is turned on and passes the output signal from the oscillator only during the period when the second pulse generating unit outputs the second pulse, thereby to emit the output signal from the switch into the space as the predetermined short pulse wave. | 10-15-2009 |
20090252270 | DATA DECISION APPARATUS AND ERROR MEASUREMENT APPARATUS - The object of the present invention is to provide a data decision apparatus and an error measurement apparatus which can set the phase of the clock to the optimum state with respect to the data signal without continuously sweeping of the phase, and can keep the state for a long time. The data decision apparatus according to the present invention comprises a delay device ( | 10-08-2009 |
20090243680 | DATA SIGNAL GENERATING APPARATUS - It is an object of the present invention to provide a data signal generating apparatus which is small in size, and can output the serial data in a desired sequence without assuming an indefinite state as well as being capable of dealing with the jitter measurement. In the data signal generating apparatus according to the present invention, synchronization means | 10-01-2009 |
20090041403 | Optical Modulator - Herein disclosed is an optical modulator, comprising: a substrate ( | 02-12-2009 |
20090034966 | Optical Signal Monitoring Apparatus and Method - An optical signal monitoring apparatus includes an optical interference unit, a sampling optical pulse generation unit, an optical sampling unit, a photoelectric converter, and a computation unit. The optical interference unit includes an optical brancher, a delay device, an optical phase adjuster, and an optical multiplexer. The optical brancher branches a monitoring object signal optical signal phase-modulated at a predetermined symbol rate into two optical paths. The delay device imparts delay corresponding to an integral multiple of one symbol to an optical signal branched in one optical path of the two optical paths. The optical phase adjuster brings an optical signal emitted delay device and an optical signal branched in another optical path of the two optical paths into a predetermined optical phase difference. The optical multiplexer multiplexes the optical signals which are brought into the predetermined optical phase difference, and converts the phase-modulated monitoring object optical signal into intensity-modulated light to emit the intensity-modulated light. The sampling optical pulse generation unit generates a sampling optical pulse having a period which is different from a predetermined offset time to integral multiplication of a symbol clock period corresponding to the predetermined symbol rate. The optical sampling unit samples the intensity-modulated light using the sampling optical pulse and emits an optical pulse signal. | 02-05-2009 |
20090034898 | OPTICAL MODULATOR - Herein disclosed is an optical modulator, comprising: a substrate | 02-05-2009 |
20090027259 | RADAR OSCILLATOR CAPABLE OF PREVENTING LEAK OF OSCILLATION OUTPUT - In order to enable intermittent output of an oscillation signal without essentially producing a leak in response to a pulse signal indicating a transmission timing of a radar wave, a radar oscillator is provided which employs a configuration in which an operation of an oscillating unit itself is alternately changed between an oscillating state and an oscillation stop state by a switch, rather than a configuration in which an output passage of an oscillation signal is switched to be opened and closed as in a conventional radar oscillator. | 01-29-2009 |
20080227479 | Transmission power control method and apparatus of mobile communication terminal - A transmission power increasing section continuously transmits, from a testing instrument to a mobile communication terminal at predetermined intervals, a transmission power increasing request for increasing transmission power of the mobile communication terminal by a predetermined quantity. A block size extracting section extracts, from a predetermined second physical channel, block size information indicating a block size of transmittable data defined in association with the maximum transmission power set at a first physical channel upon receipt of a plurality of physical channels from the mobile communication terminal for each transmission of the transmission power increasing request. A storage section stores, at least one time, block size information extracted at the block size extracting section. In the case where a value of newly extracted block size information in the block size extracting section is decreased below a value of immediately preceding block size information stored in the storage section as a result of comparison therebetween, the maximum output power state determining section stops transmission of the transmission power increasing request in the transmission power increasing section and transmits, to the mobile communication terminal, a transmission power decreasing request for decreasing transmission power of the mobile communication terminal by a predetermined quantity. | 09-18-2008 |