| ANRITSU CORPORATION Patent applications |
| Patent application number | Title | Published |
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| 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 |
