Patent application number | Description | Published |
20090016547 | Sound volume controller - A sound volume controller includes a level adjustment section that adjusts a level of an input audio signal and outputs the adjusted input audio signal as an output audio signal, a level detection section that detects the level of the input audio signal, a volume value detection section that detects a volume value set by a user, a coefficient table storage section that stores a coefficient table which describes a relation between levels of the output audio signal and levels of the input audio signal, a coefficient table change section that changes the coefficient table stored in the coefficient table storage section in accordance with the volume value detected by the volume value detection section, and a setting section that sets an amount of level adjustment of the level adjustment section in accordance with the level of the input audio signal detected by the level detection section and the coefficient table. | 01-15-2009 |
20100246853 | Audio Signal Processing Apparatus and Speaker Apparatus - An audio signal processing apparatus includes: a first filtering unit which outputs an audio signal while attenuating frequency components except for preset frequency components; a detecting unit which detects a sound volume level; an amplitude limiting unit which calculates an amplitude limiting level corresponding to the sound volume level, and which limits a part of a waveform of the audio signal output from the first filtering unit; a second filtering unit which outputs the audio signal output from the amplitude limiting unit while attenuating frequency components except for preset frequency components including a part of the frequency band of the audio signal output from the first filtering unit, and a part of the frequency band of the harmonics; a compressing unit which compresses a dynamic range of the audio signal; and an adding unit which adds the audio signal output from the compressing unit to the input audio signal. | 09-30-2010 |
20110196523 | Effect Adding Method and Effect Adding Apparatus - An effect adding method, includes: applying different gains to a positive side waveform portion and a negative side waveform portion of an audio signal respectively when absolute values of input levels of the positive side waveform portion and the negative side waveform portion are smaller than a predetermined value; producing a higher range component of the audio signal based on a high range component of the audio signal to which the gain is applied, the higher range component being higher in frequency than the high range component; producing a lower range component of the audio signal based on a low range component of the audio signal to which the gain is applied, the lower range component being lower in the frequency than the low range component; and synthesizing an audio signal having an effect sound by adding the audio signal to which the different gains are applied, the higher range component, and the lower range component with each other. | 08-11-2011 |
20120141098 | CONTENT REPRODUCTION APPARATUS AND CONTENT PROCESSING METHOD THEREFOR - A content reproduction apparatus that adopts a content processing method includes a video processor, a video analyzer, and an audio processor for processing audio data and video data input thereto. The video analyzer analyzes video characteristics of video data such as resolutions, compressive distortions, and real frame rates. The video processor processes video data in accordance with video processing, which is determined based on analyzed video characteristics of video data. The audio processor processes audio data in accordance with audio processing, such as dynamic range compression and/or frequency component extension/enhancement, which is determined based on analyzed video characteristics of video data. Thus, it is possible to reproduce sound in an articulate manner depending on the video quality, which is either professional-level video shooting or nonprofessional-level video shooting. | 06-07-2012 |
20120191462 | AUDIO SIGNAL PROCESSING DEVICE WITH ENHANCEMENT OF LOW-PITCH REGISTER OF AUDIO SIGNAL - An audio signal processing device is designed to enhance the low-pitch register of an audio signal by generating harmonics causing a missing fundamental effect with a light load of processing but without damaging an audio waveform. The audio signal processing device includes a filtering part (e.g. a band-pass filter configured of a high-pass filter and a low-pass filter) that extracts a low-pitch signal from an audio signal input thereto; a dynamic range compression part that compresses a dynamic range of the low-pitch signal by use of a time-variant gain relative to a peak of the low-pitch signal, which is detected via a peak hold operation using a predetermined time constant, thus producing a compressed signal; and an adder that adds the compressed signal to the audio signal so as to produce a processed audio signal including harmonics. | 07-26-2012 |
20130156228 | Sound Processing Apparatus, Sound System and Sound Processing Method - A sound processing apparatus processes a first sound signal and a second sound signal. The sound processing apparatus includes a first adjustor which adjusts a volume of the first sound signal, a second adjustor which adjusts a volume of the second sound signal, and a control unit which causes the first adjustor and the second adjustor to adjust the first sound signal gradually changed over a first gradually-change time and the second sound signal gradually changed over a second gradually-change time, wherein the second gradually-change time is shorter than and included in the first gradually-change time. | 06-20-2013 |
20130163782 | Sound Processing Apparatus and Sound Processing Method - A sound processing apparatus includes an information acquisition unit which acquires control information including at least one of mode information for designating a reproduction mode of the sound processing apparatus and attribute information for designating an attribute of an audio content represented by a sound signal, a frequency band expansion unit which performs frequency band expansion processing for adding an expanded component generated from the sound signal to the sound signal, and a control unit which changes parameters to be applied to the frequency band expansion processing in accordance with the control information acquired by the information acquisition unit. | 06-27-2013 |
20130173262 | VOICE CLARIFICATION APPARATUS - The voice clarification apparatus includes a plurality of band-pass filters that respectively extract a plurality of band components, which are included in a voice band, from an input audio signal; a gain determination unit that determines a gain according to the level of a signal of a band component which is extracted by at least one band-pass filter of the plurality of band-pass filters; a level adjustment unit that adjusts the levels of signals of the plurality of band components which are extracted by the plurality of band-pass filters using the gain; and a first addition unit that adds a signal which is based on the audio signal to a signal in which the gain is adjusted by the level adjustment unit, and outputs a signal obtained through the addition. | 07-04-2013 |
20140029677 | CONTENT REPRODUCTION APPARATUS AND CONTENT PROCESSING METHOD THEREFOR - A content reproduction apparatus that adopts a content processing method includes a video processor, a video analyzer, and an audio processor for processing audio data and video data input thereto. The video analyzer analyzes video characteristics of video data such as resolutions, compressive distortions, and real frame rates. The video processor processes video data in accordance with video processing, which is determined based on analyzed video characteristics of video data. The audio processor processes audio data in accordance with audio processing, such as dynamic range compression and/or frequency component extension/enhancement, which is determined based on analyzed video characteristics of video data. Thus, it is possible to reproduce sound in an articulate manner depending on the video quality, which is either professional-level video shooting or nonprofessional-level video shooting. | 01-30-2014 |
20150049881 | Audio Signal Processing Device - An audio signal processing device includes: an input section to which an audio signal is input; a bias processing section configured to add a bias signal to the audio signal; a calculation section configured to perform a power calculation on the audio signal to which the bias signal has been added by the bias processing section; and an adding unit configured to add the audio signal on which the power calculation is performed by the calculation section to the audio signal having been input to the input section. | 02-19-2015 |
20150264502 | Audio Signal Processing Device, Position Information Acquisition Device, and Audio Signal Processing System - An audio signal processing device includes a calculator for generating a plurality of audio signals to be given respectively to a plurality of loudspeakers based on an audio signal corresponding to a virtual sound source having position information. The calculator calculates, with respect to each loudspeaker, a distance between each of the plurality of loudspeakers and the virtual sound source on the basis of position information indicating a position of the virtual sound source and loudspeaker position information indicating positions of the plurality of loudspeakers, and calculates an audio signal corresponding to the virtual sound source to be supplied to each of the plurality of loudspeakers on the basis of the distance. | 09-17-2015 |
20160066112 | Audio Device, Audio System, and Method - An audio device includes: an acquisition unit that acquires first information indicating an arrangement direction of a first loudspeaker, the first information being measured by a terminal device in a state with the terminal device oriented toward the first loudspeaker; and a calculation unit that calculates a position of the first loudspeaker, at least based on a distance from a reference position to the first loudspeaker, and the first information. | 03-03-2016 |
Patent application number | Description | Published |
20150180661 | RE-ENCRYPTION KEY GENERATOR, RE-ENCRYPTION DEVICE, ENCRYPTION DEVICE, DECRYPTION DEVICE, AND PROGRAM - A re-encryption key generator according to an embodiment generates a re-encryption key to obtain re-encrypted data that can be decrypted by a second private key of a second user device by re-encrypting ciphertext obtained by encrypting plaintext by a first public key of a first user device without decryption. The re-encryption key generator stores a first private key corresponding to the first public key. The re-encryption key generator stores a second re-encryption key generation key of the second user device that is different from a second public key corresponding to the second private key. The re-encryption key generator generates the re-encryption key based on the first private key and the second re-encryption key generation key. | 06-25-2015 |
20150370726 | MEMORY MANAGEMENT DEVICE AND NON-TRANSITORY COMPUTER READABLE STORAGE MEDIUM - In one embodiment, a storage unit stores a table tree and verifier tree. The table tree includes parent and child tables. The verifier tree includes parent and child verifiers associated with the parent and child tables, respectively. The parent verifier is used for verifying the child table and child verifier. A device stores a secure table tree corresponded to the table tree and used for address translation and a secure verifier tree corresponded to the verifier tree, to a secure storage unit. The device executes verification, based on verification information calculated based on a first child table and first child verifier in the storage unit and a first parent verifier in the secure verifier tree. The device sets the second address of the secure table tree such that the second address designates data in the first storage unit. | 12-24-2015 |
20150370727 | MEMORY MANAGEMENT DEVICE AND NON-TRANSITORY COMPUTER READABLE STORAGE MEDIUM - In one embodiment, a device executes reading and writing for a storage unit storing a table tree and verifier tree. The table tree includes a parent table and child table. The verifier tree includes a parent verifier associated with the parent table, and a child verifier associated with the child table. The parent verifier is used for verifying the child table and child verifier. The device stores a secure table tree being a part of the table tree and used for address translation, and a secure verifier tree being a part of the verifier tree, to a secure storage unit. The device executes verification, based on verification information calculated based on a first child table and first child verifier in the storage unit and a first parent verifier in the secure verifier tree. | 12-24-2015 |
20150370728 | MEMORY MANAGEMENT DEVICE AND NON-TRANSITORY COMPUTER READABLE STORAGE MEDIUM - In one embodiment, a device executes reading and writing for a storage unit storing a table tree and verifier tree. The table tree includes a parent table and child table. The verifier tree includes a parent verifier associated with the parent table, and a child verifier associated with the child table. The parent verifier is used for verifying the child table and the child verifier. The device stores a secure table tree being a part of the table tree and used for address translation, and a secure verifier tree being a part of the verifier tree, to a secure storage unit. The device, when data has a read-only attribute, calculates verification information based on the data and a secure value varying according as the data is updated, and executes verification based on a verifier corresponded to the data and the verification information. | 12-24-2015 |
20160006563 | ENCRYPTED DATA COMPUTATION SYSTEM, DEVICE, AND PROGRAM - According to one embodiment, an encryption device encrypts each of numerical values based on an encryption key, and generates encrypted data. On the basis of each of the encrypted data, a computation device generates a primary computation result corresponding to data in which a computation result of an expression that has added and subtracted each of the numerical values is encrypted. On the basis of the primary computation result, a secondary computation key and random numbers, a computation assist device generates a secondary computation result. The computation device generates a tertiary computation result based on the secondary computation result and a tertiary computation key, and decides the magnitude relation between a minuend and a subtrahend in the expression based on the tertiary computation result. | 01-07-2016 |
Patent application number | Description | Published |
20080278766 | IMAGE OUTPUTTING APPARATUS AND CONTROL METHOD THEREOF - The present invention provides an image outputting apparatus and a control method thereof, accommodated to a contradictory need of security improvement and TCO reduction in a rational manner. An embodiment of the present invention performs a setting of a black-and-white copy output by receiving an instruction from a user to output a black-and-white copy of a read document. Then, an LVBC extraction part and an LVBC color determining part determine whether the read document includes a color LVBC. An image-output controlling part outputs a color output of the read document when the read document has been determined to include color coded information, despite the setting of a black-and-white copy output. | 11-13-2008 |
20090232521 | IMAGE FORMING APPARATUS, METHOD OF CONTROLLING THE IMAGE FORMING APPARATUS, AND STORAGE MEDIUM - An image forming apparatus which enables even a user who is not well informed about the mechanism of the image forming apparatus to easily perform operation check on a component roller. The image forming apparatus is provided with a sheet conveying mechanism including a plurality of component rollers. A CPU of a controller of the image forming apparatus selects a component roller to be subjected to operation check from the component rollers. Then, the CPU determines a sheet conveying path to pass the selected component roller. Further, the CPU controls the sheet conveying mechanism such that a sheet is conveyed along the determined conveying path. The CPU detects the conveyance status of a sheet while the sheet is being conveyed along the conveying path. | 09-17-2009 |
20090287745 | IMAGE FORMING APPARATUS, CONTROL METHOD THEREFOR, AND STORAGE MEDIUM STORING CONTROL PROGRAM THEREFOR - An image forming apparatus capable of preventing the degradation of performance when the log data is outputted to an external device. An output unit outputs an operation condition about image forming as log data to an external device. A changing unit changes a detailed degree of the log data outputted by the output unit according to a log level that classifies the detailed degrees of the log data into some levels. A setting unit sets up a limit value corresponding to volume of the log data outputted by the output unit. A control unit controls the log level based on the limit value set up by the setting unit. | 11-19-2009 |
20110075187 | IMAGE PROCESSING APPARATUS, METHOD FOR CONTROLLING THE SAME, AND STORAGE MEDIUM - To delete unnecessary blank page(s) without changing a desired output layout requested by a user, a CPU of a controller unit sets fixed page image data, as image data of a plurality of consecutive pages whose relationship is to be fixed, among image data of a plurality of pages of a document read by a scanner unit. Further, the CPU detects image data corresponding to blank page(s) from the image data of the plurality of pages, and counts the number of pages of image data corresponding to the blank pages existing between the fixed page image data. Then, to determine an output layout of image data, the CPU deletes image data corresponding to all blank pages existing between the fixed page image data if the number of pages is an even number, and the CPU deletes image data corresponding to an even number of blank pages that are present between the fixed page image data if the number of pages is an odd number. | 03-31-2011 |
20110211851 | ELECTRIC POWER CONTROL APPARATUS AND ELECTRIC POWER CONTROL SYSTEM - An electric power control apparatus sets a first period for performing electric power control and an overall target amount of power consumption to be consumed by all of the plurality of information processing apparatuses during the first period, calculates an individual target amount of power consumption to be consumed by each information processing apparatuses during a plurality of second periods obtained by segmentalizing the first period, based on the first period and the overall target amount, transmits the corresponding second period and the individual target amount to each information processing apparatuses, receives an actual usage value of the amount of power consumption in the corresponding second period transmitted from each information processing apparatuses, calculates the individual target amount, based on the actual usage value of the amount and the overall target amount, and retransmits the individual target amount to each information processing apparatuses. | 09-01-2011 |
20110213996 | POWER CONTROL SYSTEM AND CONTROL METHOD FOR THE SAME - Provided is technology for enabling power saving control that allows a change of control content according to a user selection in a power control system that saves power consumed by an information processing apparatus. The power control system of the present invention include an image processing apparatus | 09-01-2011 |
20120113474 | POWER CONSUMPTION MONITORING APPARATUS, CONTROL METHOD THEREFOR, AND STORAGE MEDIUM STORING CONTROL PROGRAM THEREFOR - A power consumption monitoring apparatus that is capable of monitoring electric energy consumption of an electronic apparatus even when the configuration thereof changes. A receiving unit receives job history information about the electronic apparatus. A storage unit stores a calculation table for calculating power consumed by the electronic apparatus to execute the job. A calculation unit calculates power consumption of the electronic apparatus when executing the job based on the job history information and the calculation table. An acquisition unit acquires configuration information about the electronic apparatus. A management unit manages the job history information and adds correction target information to the job history information when the configuration information is not associated with the calculation table. A correction unit corrects the power consumption in association with the job history information to which the correction target information is added based on the updated calculation table when the calculation table is updated. | 05-10-2012 |
20140002838 | IMAGE FORMING APPARATUS THAT RECEIVES OPERATION SETTINGS FOR JOB EXECUTION, AND CONTROL METHOD AND STORAGE MEDIUM THEREFOR | 01-02-2014 |
20140313140 | OPERATION RECEPTION DEVICE AND METHOD FOR RECEIVING OPERATION ON PAGE IMAGE, STORAGE MEDIUM, AND IMAGE FORMING APPARATUS FOR USE WITH OPERATION RECEPTION DEVICE - An operation reception device capable of detecting and receiving an intuitive operation that resembles an operation of pinching a sheet or sheets between fingers. If it is determined that coordinate positions where operations on the operation reception device that are respectively detected by touch sensors of first and second touch panels provided on the front and back faces of the device are the same as each other, the operation reception device receives designation of at least one selected page on the first touch panel, receives an editing operation on the selected page, and performs, on the selected page, predetermined editing such as deletion and extraction corresponding to the editing operation. | 10-23-2014 |
20140369707 | IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND PROGRAM - In an image forming apparatus for controlling temperature of a fixing section based on a color material amount obtained from image data, it is determined whether the image data is a specific image, and the temperature of the fixing section is controlled so that the temperature of the fixing section becomes a predetermined temperature without using the color material amount obtained from the image data in a case where it is determined that the image data is a specific image as a determination result. | 12-18-2014 |
Patent application number | Description | Published |
20090256537 | Multiphase Voltage Regulators And Methods For Voltage Regulation - A multiphase voltage regulator system comprises a microcontroller unit (MCU) including a reference voltage generator, and a timing generator for generating n-phase start timing signals; a load for receiving an output voltage; a comparator comparing the reference voltage and output voltage to generate a comparison result; and at least n points of load (POLs) coupled between the MCU and load for controlling output voltage in response to the n-phase start timing signals and the comparison result. Each POL may include a high-side and low-side transistor; and a D-FlipFlop, the D terminal coupled High, the clock terminal coupled to receive a control signal based on a respective one of the n-phase start timing signals, the Q terminal coupled to drive the high-side transistor, the /Q terminal coupled to drive the low-side transistor, and the reset terminal coupled to receive a reset control signal based on the comparison result. | 10-15-2009 |
20110115471 | Current Sensing and Measuring Method and Apparatus - A method can include obtaining a voltage across a first transistor as an obtained voltage. The method can also include multiplying the obtained voltage by a predetermined multiple M to yield a multiplied voltage. The method can further include applying the multiplied voltage to a second transistor, wherein the second transistor is N times smaller than the first transistor. The method can additionally include providing an output current of the second transistor as an M/N scaled estimate of an output current of the first transistor. | 05-19-2011 |
20120001608 | INTELLIGENT GATE DRIVE - According to an embodiment of the invention, an apparatus includes a microprocessor-based pulse-width modulation controller configured to generate a pulse-width modulation signal, and a synchronous converter including a first transistor, a second transistor, a first driver, and a second driver. The apparatus further includes a drive voltage generator configured to generate a drive voltage for the synchronous converter. The drive voltage generator is further configured to generate the drive voltage based on a measured output current and a measured input voltage. | 01-05-2012 |
20130176015 | DISTRIBUTED DRIVING SYSTEM - A step down convertor with a distributed driving system. In one embodiment, an apparatus is disclosed that includes an inductor coupled to an output node. The apparatus also includes first and second circuits. The first circuit can transmit current to the output node via the inductor, and the second can transmit current to the output node via the inductor. The apparatus also includes a third circuit for modifying operational aspects of the first circuit or the second circuit based on a magnitude of current flowing through the inductor. | 07-11-2013 |
Patent application number | Description | Published |
20090267587 | POWER SUPPLY DEVICE AND SWITCHING POWER SUPPLY DEVICE - In a driver circuit constructing a switching power supply device that switches power transistors passing a current through a coil by a PWM mode, a current detection transistor, which is smaller in size than the low-potential side power transistor, and a current detection resistor are provided in parallel to the low-potential side power transistor. The same control voltage as the power transistor is applied to the control terminal of the current detection transistor. An operational amplifier is formed, that has the potential of the connection node between the current detection transistor and the current detection resistor applied to its inverse input terminal and a feedback loop, so as to make a pair of input terminals of the operational amplifier be at the same potential. A signal produced by the current detection resistor is thus outputted as a current detection signal. | 10-29-2009 |
20110002358 | Temperature Detection and Reporting System and Method in Power Driving and/or Consuming System - An apparatus, in one embodiment, can include a configuration including a plurality of heat generation devices. The apparatus also includes a plurality of thermal sensors respectively, operably connected to each of the plurality of heat generation devices, wherein each thermal sensor of the plurality of thermal sensors includes a respective output terminal configured to provide a voltage representative of the temperature of the respective heat generation device. The apparatus further includes an output circuit configured to output the highest temperature information among the heat generation devices. The output terminals of the plurality of thermal sensors are tied together. A corresponding method is also discussed. | 01-06-2011 |
20130266040 | TEMPERATURE DETECTION AND REPORTING SYSTEM AND METHOD IN POWER DRIVING AND/OR CONSUMING SYSTEM - An apparatus, in one embodiment, can include a configuration including a plurality of heat generation devices. The apparatus also includes a plurality of thermal sensors respectively, operably connected to each of the plurality of heat generation devices, wherein each thermal sensor of the plurality of thermal sensors includes a respective output terminal configured to provide a voltage representative of the temperature of the respective heat generation device. The apparatus further includes an output circuit configured to output the highest temperature information among the heat generation devices. The output terminals of the plurality of thermal sensors are tied together. A corresponding method is also discussed. | 10-10-2013 |
20140321506 | TEMPERATURE DETECTION AND REPORTING SYSTEM AND METHOD IN POWER DRIVING AND/OR CONSUMING SYSTEM - An apparatus, in one embodiment, can include a configuration including a plurality of heat generation devices. The apparatus also includes a plurality of thermal sensors respectively, operably connected to each of the plurality of heat generation devices, wherein each thermal sensor of the plurality of thermal sensors includes a respective output terminal configured to provide a voltage representative of the temperature of the respective heat generation device. The apparatus further includes an output circuit configured to output the highest temperature information among the heat generation devices. The output terminals of the plurality of thermal sensors are tied together. A corresponding method is also discussed. | 10-30-2014 |
Patent application number | Description | Published |
20110058400 | POWER CONVERSION APPARATUS - The power conversion apparatus includes a power conversion circuit including parallel-connected pairs of a high-side switching element and a low-side switching element connected in series, high-side driver circuits to drive the high-side switching elements, low-side driver circuits to drive the low-side switching elements, and a transformer to supply voltages to drive the high-side switching and low-side switching elements to the high-side and low-side driver circuits. The high-side switching elements are mounted in a row along a first direction on a wiring board, and the low-side switching elements are mounted in a row along the first direction on the wiring board side by side with the row of the high-side switching elements. The transformer is mounted on the wiring board on the side of the row of the high-side switching elements opposite to the row of the low-side switching elements. | 03-10-2011 |
20110163706 | DRIVE DEVICE FOR ELECTRIC POWER CONVERSION CIRCUIT - A drive device has a break circuit. The break circuit inputs phase-current values transferred from phase-current sensors mounted on an electrical path of a motor generator. A power switching element is equipped with a freewheel diode connected in parallel with each other. An inverter has pairs of the power switching elements. In each pair, the power switching element in a high voltage side and the power switching element in a low voltage side are connected in series. It is detected for the freewheel diode to be in a freewheel mode when a forward current flows in the freewheel diode. The break circuit detects the freewheel mode when the phase-current value is not less than a predetermined threshold value. The break circuit detects the freewheel mode where the current flows in the freewheel diode in an upper arm when the phase-current value is not more than the threshold current value. | 07-07-2011 |
20120025875 | APPARATUS FOR DRIVING VOLTAGE CONTROLLED SWITCHING ELEMENTS - An apparatus is provided to drive a voltage controlled switching element having a conduction control terminal. In the apparatus, it is determined whether or not voltage at the conduction control terminal is at a first voltage which is lower than a second voltage and which is equal to or more than a threshold voltage. The second voltage is a voltage provided when the switching element is in a normal on-state thereof. The threshold voltage is voltage at which the switching element is switched on. When it is determined that the voltage at the conduction control terminal is at the first voltage, the switching element is forcibly switched off. | 02-02-2012 |
20120075761 | ELECTRONIC DEVICE - An electronic device that is capable of detecting an abnormal state such that a switching element is unable to be turned off in spite of a drive signal instructing turn-off of the switching element. The device includes a switching element that is driven by controlling a voltage on its control terminal, a drive circuit that controls the voltage on the control terminal of the switching element on the basis on an inputted drive signal to drive the switching element. In cases where there exists a current flowing through the switching element in spite of the drive signal instructing turn-off of the switching element, the drive circuit determines that the switching element is in an abnormal state, and cuts off supply of voltage from a drive power supply circuit to the control terminal of the switching element to thereby turn off the switching element. | 03-29-2012 |
20120126858 | LOAD DRIVING APPARATUS - A load driving apparatus for driving a load with a constant current includes a shunt resistor and a driver circuit. A shunt current corresponding to the constant current flows though the shunt resistor. The driver circuit is connected to a first end of the shunt resistor to supply the constant current corresponding to the shunt current to the load. The driver circuit includes a reference voltage source for generating a predetermined reference voltage. The driver circuit adjusts the magnitude of the constant current by performing a feedback-control of the magnitude of the shunt current in such a manner that a first voltage corresponding to the reference voltage and a second voltage corresponding to a voltage at the first end of the shunt resistor become equal to each other. | 05-24-2012 |
20120126859 | LOAD DRIVER WITH CONSTANT CURRENT VARIABLE STRUCTURE - A load driver includes a switching element connected to a load, a constant current generator that generates a constant current, and a driver circuit that turns on the switching element for an on-period, which depends on a value of the constant current and is shortened with an increase in the value of the constant current. The constant current generator supplies a first constant current having a first current value to the driver circuit during the on-period, and supplies a second constant current having a second current value smaller than the first current value after the on-period has elapsed and the switching element reaches an on state. | 05-24-2012 |
20120217937 | DRIVE CIRCUIT FOR SWITCHING ELEMENT - A drive circuit is used for driving a switching element. The drive circuit includes a detection unit and an integrated circuit. The detection unit detects a state of a controlled switching element and outputs a voltage signal corresponding to a detection result of the state. The integrated circuit receives the voltage signal via an input terminal for the detection result and controls the switching element based on the received voltage signal. The input terminal includes at least two input terminals that are connected to each other so as to receive the same voltage signal from the detection unit. | 08-30-2012 |
20120242376 | LOAD DRIVE APPARATUS AND SEMICONDUCTOR SWITCHING DEVICE DRIVE APPARATUS - A load drive apparatus includes a switching device, a gate drive circuit, a clamp circuit, a temperature detection circuit, and an arithmetic device. The switching device controls an on-off state of current supply to a load. The gate drive circuit turns on the switching device by controlling a gate voltage of the switching device so that the switching device operates in a full-on state. The clamp circuit clamps the gate voltage of the switching device to a clamp voltage lower than the gate voltage in the full-on state and higher than a mirror voltage. The temperature detection circuit detects a temperature of the switching device. The arithmetic device calculates a voltage corresponding to a variation in a mirror voltage based on the detected temperature and controls the clamp voltage in the clamp circuit so as to be the calculated voltage. | 09-27-2012 |
20120249020 | DRIVE CIRCUIT FOR SWITCHING ELEMENT - A drive circuit for a switching element includes a constant-current control unit and a restriction unit. The constant-current control unit performs a constant-current control for charging an open/close control terminal of a switching element to be driven which is a voltage-controlled switching element with electric charge for turning on the switching element. The restriction unit restricts, to a reference voltage, a voltage between the open/close control terminal and a first end of a pair of ends of a current flow path of the switching element for a predetermined period following a start of the constant-current control within a charging process period during which the open/close control terminal is charged with the electric charge such that the switching element is turned on. | 10-04-2012 |
Patent application number | Description | Published |
20130207712 | DRIVE UNIT FOR REVERSE-CONDUCTING SWITCHING ELEMENT - In a drive unit for a reverse-conducting switching element which is a driven switching element, a process to transfer electric charges to a conductive control terminal of the driven switching element is performed on the basis of a turn-on command or a turn-off command, thereby turning on and off the driven switching element. A transfer rate of the electric charges is changed in a period from when the transfer of the electric charges to the conductive control terminal is started until when it is completed. While judged that forward current flows in a free-wheel diode, the electric charges are inhibited from being charged to the conduction control terminal which corresponds to the free-wheel diode in which the forward current is judged to flow. While the electric charges are inhibited from being charged to the conductive control terminal, a change of the transfer rate is disabled. | 08-15-2013 |
20130229208 | DRIVE CIRCUIT FOR SWITCHING ELEMENTS - A first-path connects an input-terminal and an output-terminal of a high-potential-side switching-element and includes a high-potential-side rectifying-device and a high-potential-side passive-element. A second-path connects the output-terminal of the high-potential-side switching-element and the output-terminal of a low-potential-side switching-element and includes a low-potential-side rectifying-device and a low-potential-side passive-element. A high-potential-side applying-unit applies voltage to a connecting point between the high-potential-side rectifying-device and the high-potential-side passive-element. A high-potential-side determining-unit determines that an overcurrent is flowing between the input-terminal and the output-terminal of the high-potential-side switching-element by using a first-value. A limiting-unit limits a current between the low-potential-side rectifying-device and the output-terminal of the high-potential-side switching-element if the overcurrent is flowing. A low-potential-side applying-unit applies voltage to a connecting point between the low-potential-side rectifying-device and the low-potential-side passive-element. A low-potential-side determining-unit determines that an overcurrent is flowing between the input-terminal and the output-terminal of the high-potential-side or low-potential-side switching element by using a second-value. | 09-05-2013 |
20130307593 | DRIVE UNIT FOR SWITCHING ELEMENT - In a drive unit for a switching element, a drive circuit changes the switching element between an on-state and an off-state, by controlling a potential difference between a reference terminal, which is one of a pair of ends of a current path of the switching element, and an opening-closing control terminal of the switching element. A determination section determines, if an on-operation command or an off-operation command is inputted as an operation signal for the switching element, whether or not the potential difference has reached a specific value toward which the potential difference shifts, in response to one of the operation commands, with respect to a threshold value by which the switching element is turned on. A forcible processing section removes charge for turning on the switching element from the opening-closing control terminal, if the determination section determines that the potential difference has not reached the specific value. | 11-21-2013 |
20140035629 | DRIVER APPARATUS FOR SWITCHING ELEMENTS - In a driver apparatus for driving a voltage-controlled switching element, an absolute value of a voltage difference between a voltage at a reference terminal that is one of terminals of a current path of the switching element and a voltage at the switching control terminal of the switching element is clamped at a clamping voltage greater than a threshold voltage. A voltage greater than the threshold voltage applied to the switching control terminal allows the switching element to be turned on. When the current flowing through the switching element becomes equal to or greater than a clamp threshold after the switching element transitions from an off-state to an on-state, a voltage-drop-rate at which the absolute value is decreased to the clamping voltage is decreased. | 02-06-2014 |
20140062361 | DRIVER FOR SWITCHING ELEMENT AND CONTROL SYSTEM FOR ROTARY MACHINE USING THE SAME - In a driver, a discharging module discharges, at a discharging rate, the on-off control terminal of a switching element in response to a drive signal being shifted from an on state to an off state. A changing module determines whether a condition including a level of a sense signal being higher than a threshold level during the on state of the drive signal is met, and changes the discharging rate of the on-off control terminal in response to the drive signal being shifted from the off state to the on state upon determination that the condition is met. A loosening module loosens the condition after a lapse of a period since the shift of the drive signal from the off state to the on state in comparison to the condition immediately after the shift of the drive signal from the off state to the on state. | 03-06-2014 |
Patent application number | Description | Published |
20150035487 | EQUALIZATION DEVICE FOR ASSEMBLED BATTERY - An equalization device for equalizing voltages of battery cells connected in series includes equalization switches, resistors, and a control circuit. Each equalization switch has energization terminals interposed between terminals of a corresponding battery cell. A current path between the energization terminals conducts when a control voltage not less than a threshold voltage is applied between control terminals of the equalization switch. Each resistor is connected between the control terminals of the corresponding equalization switch. The control circuit switches an equalization execution state and an equalization stop state in accordance with an equalization signal provided for each battery cell. In the execution state, the control circuit passes an electric current through the corresponding resistor to generate the control voltage not less than the threshold voltage. In the stop state, the control circuit causes the corresponding resistor to generate the control voltage less than the threshold voltage. | 02-05-2015 |
20150035569 | SEMICONDUCTOR ELEMENT MODULE AND GATE DRIVE CIRCUIT - A semiconductor element module includes a driving element and a voltage change detecting element each formed of a voltage driving semiconductor element. The voltage change detecting element detects a change of a voltage between a collector and an emitter or between a drain and a source of the driving element. A collector or a drain of the voltage change detecting element is connected to the collector or the drain of the driving element, and a gate of the voltage change detecting element is connected to an emitter or a source of the voltage change detecting element. The emitter or the source of the voltage change detecting element is provided as a detecting terminal. | 02-05-2015 |
20150054519 | ROUTE SWITCHING CIRCUIT AND VOLTAGE DETECTION DEVICE - A route switching circuit includes: a pair of normal detection routes that output voltages of a positive side connection point and a negative side connection point, which are different from each other, in multiple batteries for constituting an assembled battery; and a pair of diagnosis detection routes that output the voltages of the positive side connection point and the negative side connection point, and confirm a connection state of the normal detection routes by using the normal detection routes, which output at least one of a voltage of a positive side battery connected to a positive side from the positive side connection point and a voltage of a negative side battery connected to a negative side from the negative side connection point. | 02-26-2015 |
20150077060 | EQUALIZATION DEVICE FOR ASSEMBLED BATTERY - In an equalization device for equalizing voltages of battery cells connected in series, each battery cell is provided with an equalization switch and a level shift section. The level shift section includes at least one level shift circuit. Each level shift circuit operates on a power supply voltage supplied from a series circuit of a predetermined number of adjacent battery cells. The level shift circuits are arranged so that potentials of the power supply voltages are different from each other in sequence. In the level shift section, a first level shift circuit outputs a pair of drive voltages by level-shifting a pair of control signals inputted from a second level shift circuit adjacent to the first level shift circuit, and a last level shift circuit outputs the pair of drive voltages as a control voltage for a corresponding equalization switch. | 03-19-2015 |
Patent application number | Description | Published |
20120062396 | PARKING SUPPORT DEVICE - A parking support device is provided for extracting detection point data corresponding to a corner portion of a parked vehicle | 03-15-2012 |
20120170411 | OBSTACLE DETECTION DEVICE - An obstacle detection device includes one or more emitter ultrasonic sensors, each emitting an ultrasonic wave toward an obstacle, and one or more detection ultrasonic sensors for reception, each detecting a reflected wave from the obstacle. A control unit drives a specific one of the emitter ultrasonic sensors to cause it to emit an ultrasonic wave, stops the emission of the ultrasonic wave by the specific emitter ultrasonic sensor at the time that one of the detection ultrasonic sensors detects a reflected wave from the obstacle, and carries out detection of the obstacle and measurement of the distance to the obstacle from the time that the control unit stops the emission of the ultrasonic wave by the emitter ultrasonic sensor and the time that the reflected wave cannot be detected anymore. | 07-05-2012 |
20120307594 | OBSTACLE DETECTION DEVICE - An obstacle detection device controls distance sensors to cause the distance sensors to transmit a transmission wave during a fixed time period, measures a first time which has elapsed from a time at which the transmission starts to a time at which a reflected wave is detected, and a second time which has elapsed a time at which the above-mentioned transmission is stopped to a time at which the reflected wave disappears, and determines that an obstacle exists when a time difference between the above-mentioned first time and the above-mentioned second time is equal to or shorter than a predetermined allowed time. Therefore, the obstacle detection device can reduce the time required for the determination to at least one-half that provided by a related art technique, and improves the accuracy of the detection of an object moving at a relatively high speed. | 12-06-2012 |
20120320211 | VIHICLE SURROUNDINGS MONITORING DEVICE - A vehicle surroundings monitoring device carries out a position mapping process of expressing a positional relationship in the detection ranges of distance sensors | 12-20-2012 |
20120327239 | VEHICLE REAR VIEW MONITORING DEVICE - Because a vehicle rear view monitoring device changes the detection threshold level of each of distance sensors | 12-27-2012 |
20150061850 | NOTIFICATION SOUND CONTROL UNIT OF APPROACHING VEHICLE AUDIBLE SYSTEM - A notification sound control unit ( | 03-05-2015 |
Patent application number | Description | Published |
20130000592 | PISTON FOR INTERNAL COMBUSTION ENGINE - Provided is an aluminium alloy piston for an internal combustion engine. In the internal combustion engine, the piston moves back and forth in a sleeve made of grey cast iron or an aluminium alloy. Further, the piston, which is made from silver, silver alloy, copper, or copper alloy, is provided with a film that covers the scoring that is formed on the piston skirt and there are undulations in the surface of the film, formed from protrusions and depressions. There is a difference of 8-15 μm between the lowest point of the depressions and the highest point of the protrusions. The pitch of adjacent protrusions corresponds to the pitch of projections in the scoring. In addition, the arithmetic average roughness (Ra) of the protrusion peaks does not exceed 60 nm. | 01-03-2013 |
20150047498 | PISTON FOR INTERNAL COMBUSTION ENGINE - A piston that moves reciprocally in the cylinder of an internal combustion engine and has a piston skirt that makes sliding contact with the inner wall of the cylinder. Solid lubrication parts are provided on the sliding-contact surface of the piston skirt. The solid lubrication parts include at least one type of silver, silver alloy, copper, or copper alloy, and at least one type of carbon material or carbide ceramics. | 02-19-2015 |
20150184612 | PISTON FOR INTERNAL COMBUSTION ENGINE - A piston that maintains excellent lubricating performance even when the internal combustion engine is operated in severe environments. A primer layer including a resinous material is disposed on the sliding surface of the skirt of a piston, and solid lubricating parts, preferably including silver (Ag), a silver alloy, copper (Cu), or a copper alloy are disposed on the primer layer. In the primer layer and the solid lubricating parts, a fibrous filler including metallic fibers, etc., is present so as to extend across the boundary between the primer layer and the solid lubricating parts. | 07-02-2015 |
Patent application number | Description | Published |
20100159717 | Board-To-Board Connector - A board-to-board connector is disclosed. The connector has first and second connectors. The first connector has concave insertion portions in which first terminals are arranged. The second connector is configured to be engaged, by fitting, with the first connector. The second connector has convex insertion portions in which second terminals are arranged and which are inserted in the concave insertion portions. | 06-24-2010 |
20120231637 | BOARD-TO-BOARD CONNECTOR - A board-to-board connector has such a configuration that at least one a first reinforcing bracket of a first connector and a second reinforcing bracket of a second connector is provided with a bent portion having a crank shape, viewed from the insertion/removal direction of the first and second connectors. Owing to such a configuration, deformation of the first reinforcing bracket and/or the second reinforcing bracket can be prevented, and a firm engagement state between the first and second reinforcing brackets is achieved. As a result, a strong removal force is required for releasing the engagement state, and a stable engagement between the first connector and the second connector can be maintained. | 09-13-2012 |
20130210270 | BOARD-TO-BOARD CONNECTOR - A board-to-board connector is disclosed. The board-to-board connector comprises a first connector having a first terminal and a first housing provided with a recessed part, a second connector having a second terminal that contacts the first terminal and a second housing provided with a raised part that inserts into the recessed part, and a switch that electrically detects the fit completion of the first connector and the second connector. | 08-15-2013 |
20150380845 | CONNECTOR - A connector comprises a first connector and a second connector. The first connector includes a first connector main body and a plurality of first terminals mounted side by side in the longitudinal direction of the first connector main body on both sides in the transverse direction of the first connector main body. The second connector includes a second connector main body for mating with the first connector main body and a plurality of second terminals mounted side by side in the longitudinal direction of the second connector main body on both sides in the transverse direction of the second connector main body. Each first terminal includes a first contact portion and a second contact portion facing each other. The first contact portion and the second contact portion overlap the corresponding second terminal. The amount of overlap is greater than the amount of clearance in the transverse direction of the first connector main body. Each second terminal is inserted between the first contact portion and the second contact portion of the corresponding first terminal and contacting the first terminal when the first connector main body is mated with the second connector main body. | 12-31-2015 |
Patent application number | Description | Published |
20090140330 | Semiconductor device and method of manufacturing semiconductor device - The semiconductor device according to the present invention includes a semiconductor layer, a trench formed by digging the semiconductor layer from the surface thereof, a gate insulating film formed on the inner surface of the trench, and a gate electrode made of silicon embedded in the trench through the gate insulating film. The gate electrode has a high-conductivity portion formed to cover the gate insulating film with a relatively high conductivity and a low-conductivity portion formed on a region inside the high-conductivity portion with a relatively low conductivity. | 06-04-2009 |
20100283125 | Semiconductor device and method of manufacturing the same - The semiconductor device according to the present invention includes a lower electrode made of a metallic material, a capacitance film made of an insulating material and laminated on the lower electrode, an upper electrode made of a metallic material, opposed to the lower electrode through the capacitance film, and having an outline smaller than that of the lower electrode in plan view along the opposed direction, and a protective film made of the same material as that of the capacitance film and laminated on the upper electrode. | 11-11-2010 |
20110298044 | SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE - The semiconductor device according to the present invention includes a semiconductor layer, a trench formed by digging the semiconductor layer from the surface thereof, a gate insulating film formed on the inner surface of the trench, and a gate electrode made of silicon embedded in the trench through the gate insulating film. The gate electrode has a high-conductivity portion formed to cover the gate insulating film with a relatively high conductivity and a low-conductivity portion formed on a region inside the high-conductivity portion with a relatively low conductivity. | 12-08-2011 |
20140306275 | SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE - A semiconductor device is disclosed. The semiconductor device includes an insulating layer formed selectively on a semiconductor layer; a lower electrode, formed on the insulating layer, having an end portion at a position spaced apart by a predetermined distance inward from a periphery of the insulating layer; a dielectric film formed on the lower electrode; an upper electrode, formed on the dielectric film, facing the lower electrode with the dielectric film interposed between the upper electrode and the lower electrode; and a passivation film, formed to cover the insulating layer, starting from the end portion of the lower electrode and extending toward the periphery of the insulating layer. The passivation film includes an insulating material having an etching selectivity with respect to the insulating layer. | 10-16-2014 |