Abstract: A display device according to the present disclosure includes: a variable-voltage source supplying power source voltage; an organic EL display unit including power lines on high-potential side and low-potential side that are connected to pixels; a potential difference detecting circuit detecting a potential on the high-potential side of a monitor pixel; a voltage drop amount calculating circuit calculating an amount of voltage drop generated in the power line on the low-potential side from video data and estimating a potential at, at least one point of the power line on the low-potential side; and a signal processing circuit regulating power source voltage to be supplied from the variable voltage source such that a potential difference between the potential on the high-potential side detected by the potential difference detecting circuit and the potential on the low-potential side estimated by the voltage drop amount calculating circuit reaches a predetermined potential difference.

Abstract: A multilayer wiring board having via-hole conductors which electrically connects a plurality of wirings arranged in a manner such that an insulating resin layer is placed between the wirings, wherein: the via-hole conductors each include copper, tin, and bismuth, namely, a first metal region including a link of copper particles in plane-to-plane contact with one another, the link electrically connecting the wirings, a second metal region mainly composed of one or more of tin, a tin-copper alloy, and a tin-copper intermetallic compound, and a third metal region mainly composed of bismuth; at least a part of the second metal region is in contact with the surface of the copper particles, the surface excluding the area of the plane-to-plane contact portion of the link; and the Cu, Sn, and Bi in the metal portion are of a composition having a specific weight ratio (Cu:Sn:Bi).

Abstract: A sensor chip is a sensor device for measuring a property of a substance by adsorbing the substance on a surface of the sensor chip. The sensor chip includes a diaphragm having a first surface, a second surface, and at least one through hole penetrating from the first surface to the second surface. At least a part of the first surface, the second surface, and an inner wall surface of the through hole is covered with a noncrystalline solid layer including SiOX as a main component, in which substance X is an element having higher electronegativity than that of silicon.

Abstract: The present disclosure provides a method of generating codebook in a wireless communication system with multiple antenna arrays, as well as a wireless communication system, base station and terminal using the codebook for communication. The method comprises steps of: providing a basic codebook which cotains multiple pre-coding matrices; and assigning phase offsets to certain pre-coding matrices in the basic codebook to form a codebook with phase offset. The feedback overhead from a client to a base station side is reduced and a good precision of feedback for multi-antenna array is kept by applying the method of generating codebook and using the generated codebook in the wireless communication system, base station and terminal.

Abstract: Provided is a method for monitoring the surroundings of a vehicle, with which vehicle driving safely can be improved. The disclosed method for monitoring the surroundings of a vehicle involves: a step (S1100: YES; S1400) of activating a notification section that gives off an alarm to the driver of the vehicle when the vehicle starts to move; and a step (S1400) of displaying, on a screen inside the vehicle, a display item that accepts an operation for cancelling the alarm, as well as a image which is based on captured video-image data of the surroundings of the vehicle, when the vehicle starts to move.

Abstract: Provided is a backlight device having: a light source element having LEDs and a lens expanding light from the LEDs; a housing containing the light source element; a diffuser plate covering an opening portion of the housing; and a reflection sheet reflecting light emitted from the light source element, toward the diffuser plate. The LEDs are arranged in one or more rows, at a central zone. The lens has an incident surface receiving light from the LEDs, and an exit surface from which the light goes out, being expanded. The reflection sheet is configured such that the angle between the optical axis of the lens of the light source element, and a line connecting a light emitting surface of each LED of the light source element and an end portion of the backlight device on the long side thereof is within a range of 60°??m?80°.

Abstract: A sequence allocating method and apparatus wherein in a system where a plurality of different Zadoff-Chu sequences or GCL sequences are allocated to a single cell, the arithmetic amount and circuit scale of a correlating circuit at a receiving end can be reduced. In ST201, a counter (a) and a number (p) of current sequence allocations are initialized, and in ST202, it is determined whether the number (p) of current sequence allocations is coincident with a number (K) of allocations to one cell. In ST203, it is determined whether the number (K) of allocations to the one cell is odd or even. If K is even, in ST204-ST206, sequence numbers (r=a and r=N?a), which are not currently allocated, are combined and then allocated. If K is odd, in ST207-ST212, for sequences that cannot be paired, one of sequence numbers (r=a and r=N?a), which are not currently allocated, is allocated.

Abstract: A face recognition device includes: an image capture unit, an area detection unit, a feature amount extraction unit, a distance estimation unit and a feature amount update unit. The image capture unit is configured to capture an image of an object. The area detection unit is configured to detect a given area of the object based on an image obtained as an image capture result of the image capture unit. The feature amount extraction unit is configured to extract a feature amount within the given area detected by the area detection unit. The distance estimation unit is configured to estimate a distance between the image capture unit and the given area. The feature amount update unit is configured to update the feature amount extracted by the feature amount extraction unit based on the distance estimated by the distance estimation unit.

Abstract: A camera processor image-processes an image for left eye captured by a left-eye image capturing unit and an image for right eye captured by a right-eye image capturing unit to generate a parallax image of the left-eye image and the right-eye image. A vertical timing adjuster adjusts timings of driving a left-eye image sensor and a right-eye image sensor using a frame synchronizing drive controller to reduce as close to zero as possible an amount of vertical displacement between a framing position of a target object image in the left-eye image and a framing position of a target object image in the right-eye image.

Abstract: A contact device includes a contact point block, a drive unit, and permanent magnets. The contact point block includes fixed terminals having fixed contact points and a movable contactor having movable contact points arranged side by side on one surface of the movable contactor. The movable contact points are configured to come into contact and out of contact with the fixed contact points. The drive unit drives the movable contactor such that the movable contact points come into contact and out of contact with the fixed contact points. The permanent magnets are arranged in a mutually opposing relationship across the contact point block along a direction orthogonal to an arrangement direction of the movable contact points and to a direction in which the movable contact points come into contact and out of contact with the fixed contact points. The permanent magnets are provided with mutually-opposing surfaces having the same polarity.

Abstract: A base conductive member is formed on a surface and in a hole section of a substrate, and a resist is formed on a part of the base conductive member in which a conductive layer is not to be formed. The conductive layer is formed on a part except for the part in which the resist has been formed, and a mask metal is formed on the conductive layer. Then, the resist is removed, and the base conductive member is etched using the mask metal as a mask to form the conductive layer into a predetermined shape.

Abstract: A plasma display panel includes a front plate and a rear plate disposed in such a manner as to face the front plate. The front plate has a display electrode and a dielectric layer covering the display electrode. The dielectric layer contains substantially no lead components but contains MgO, SiO2, and K2O. A content of MgO is in a range between 0.3 mol % and 1.0 mol %, both inclusive. The content of SiO2 is in a range between 35 mol % and 50 mol %, both inclusive.

Abstract: A focal plane shutter device includes a shutter base plate having an opening part, a front curtain, a first elastic member, a rear curtain, a second elastic member, and a drive unit. The front curtain is movable between a first and second position to cover and uncover the opening. The first urging member is configured to move the front curtain between the first and second positions. The rear curtain is movable between a first and second position to cover and uncover the opening. The second urging member is configured to move the rear curtain between the first and second positions. The drive unit is configured to resist the first and second urging members. The drive unit is also configured to hold the front curtain at the second position when resisting the first urging member and hold the rear curtain at the first position when resisting the second urging member.

Abstract: The characteristic playback domain of an AV stream is to be reproduced simply and reliably without complicating the management. As marks representing characteristic points of an AV stream, a mark of the type indicating a point and a mark of the type indicating a section (duration) are provided. The mark of the type indicating a point designates a point with a time stamp corresponding to a preset playback timing of the AV stream. The mark of the type indicating a section specifies the domain based on the time stamp of the playback start point of the preset playback domain of the AV stream and on the duration as from the playback start point until the playback end point.

Abstract: As shown in FIG. 7, a data receiver receives video data and audio data together with a frequency division parameter N that depends on the pixel clock of the video data and the sampling frequency of the audio data, and a count value CTS that is obtained by counting the period of the audio clock that has been subjected to frequency division by the frequency division parameter N, with the pixel clock, which are transmitted from a data transmitter, and subjects the pixel clock to frequency division by the count value CTS, phase-control the divided clock (s501) in accordance with a phase comparison clock (s505) that is obtained by dividing an audio clock (s403) oscillated from a VCO (504) by the frequency division parameter N, thereby generating an audio clock (s403). Accordingly, the data transmitter and the data receiver can satisfactorily implement multiplexing of audio data and video data, and transmission of the multiplexed data using an existing DVI cable, with a simple structure.

Abstract: An encoding device improves the sound quality of a stereo signal while maintaining a low bit rate. The encoding device includes: an LP inverse filter which LP-inverse-filters a left signal L(n) by using an inverse quantization linear prediction coefficient AdM(z) of a monaural signal; a T/F conversion unit which converts the left sound source signal Le(n) from a temporal region to a frequency region; an inverse quantizer which inverse-quantizes encoded information Mqe; spectrum division units which divide a high-frequency component of the sound source signal Mde(f) and the left signal Le(f) into a plurality of bands; and scale factor calculation units which calculate scale factors ai and ssi by using a monaural sound source signal Mdeh,i(f), a left sound source signal Leh,i(f), Mdeh,i(f), and right sound source signal Reh,i(f) of each divided band.

Abstract: A compressor has a hermetic container filled with a lubricant and accommodates an electric element provided with a stator and a rotor and a compressing element, wherein the compressing element includes a shaft, a cylinder block, a piston, a connection mechanism, a bearing, and a thrust ball bearing provided between the rotor and a bearing end surface as an end surface of the bearing, and wherein the thrust ball bearing includes a plurality of balls, a holder portion for holding the balls, upper and lower races disposed on and beneath the balls, a rotation regulation portion for regulating a rotation of the lower race, and a thrust surface provided at the bearing end surface so as to contact with a lower surface of the lower race.

Abstract: It comprises stator including stator core having yoke and a plurality of teeth protruded from yoke, which is formed with slots between adjacent teeth, and rotor having rotor core and permanent magnet formed with a plurality of magnetic poles, which confronts tip ends of teeth via gaps, wherein rotor core is formed by rotor core materials circumferentially equally divided into the predetermined number of divisions, and the least common multiple being N for the number of slots and the number of magnetic poles and the least common multiple being M for the number of slots and the number of divisions, then N is equal to M.

Abstract: A secondary battery charge control method includes: a charge control step of executing charging by supplying a charge current to a secondary battery; a charge information acquisition step of acquiring information relating to the charging executed in the charge control step; a storage step of storing the information acquired in the charge information acquisition step as charge data; and a charge inhibition determination step of determining whether to inhibit the charging in the charge control step on the basis of the charge data of a previous cycle that have been stored in the storage step when charging in the charge control step is started again after charging in the charge control step has been completed.

Abstract: A drive unit includes a lens frame configured to support a lens, a movable body located outside the lens and configured to be movable with the lens frame, and a vibratory actuator configured to drive the movable body. The vibratory actuator includes an actuator main body contacting the movable body, an opposite member provided at a position which is opposite to the actuator main body so that the movable body is sandwiched between the actuator main body and the opposite member, and a connecting member configured to connect the actuator main body and the opposite member and to bias them toward the movable body. The connecting member is not provided at a side of the movable body where the lens frame is provided, but is provided at an opposite side of the movable body to the side where the lens frame is provided, as viewed in the optical direction.

Abstract: An illumination controller determines a target brightness setting value from a illuminance value measured by a illumination sensor, determines a brightness correction start time in response to a target brightness setting value and a current brightness setting value and a calculation information that are stored in a memory, calculates an amount of brightness setting change per specified time from the current brightness setting value stored in the memory and the target brightness setting value at a brightness correction start time, and outputs an output brightness setting value in response to the amount of brightness setting change that is calculated. The brightness controller adjusts brightness of the display unit in response to the output brightness setting value output from the illumination controller.

Abstract: To provide a variable resistance element capable of preventing the interface resistance, in a side of the variable resistance element in which resistance change is not allowed, from changing to high resistance due to applied voltage. The variable resistance element is configured by providing a variable resistance film (265) between a first electrode (280) and a second electrode (250), the oxygen concentration within the film of the variable resistance film (265) is high at the side of an interface with the second electrode (250) (high-concentration variable resistance layer (260)) and low at the side of an interface with the first electrode (280) (low-concentration variable resistance layer (270)), and the junction surface area between the low-concentration variable resistance layer (270) and the first electrode (280) is larger than the interface surface area between the high-concentration variable resistance layer (260) and the second electrode (250).

Abstract: When a connection failure occurs in an FFC for electrically interconnecting the ground potentials of the printed boards, the failure is immediately detected. A plasma display device has a scan electrode driving circuit for dividing scan electrodes into a first scan electrode group and a second scan electrode group and driving them, scan electrode driving ICs for applying a scan pulse generated by the scan electrode driving circuit to the scan electrodes, a timing generating circuit for generating switch signal SI used for switching the scan electrode driving ICs in a predetermined order, and a first printed board and second printed board that have the scan electrode driving ICs. The ground potential of the first printed board is electrically connected to that of the second printed board via an FFC. Switch signal SI is input from the first printed board to the second printed board via the FFC.

Abstract: A recording device includes a recording medium operable to store a plurality of program streams and information about recording of each program stream, and a controller operable to control display of the program stream recorded on the recording medium on a display device. When receiving an instruction for selecting a predetermined item from among the plurality of selection items, the controller causes the menu image to be displayed, making the menu image include information representing programs corresponding to at least a part of the plurality of the program streams recorded on the recording medium, in addition to the plurality of selection items.

Abstract: An ultrasonic actuator (2) includes an actuator body (4) which performs a longitudinal vibration and a bending vibration, and a driver element (8a, 8b) which is provided on one of side surfaces of the actuator body (4) which is a mounting surface (40a), and performs an orbital motion in accordance with the vibrations of the actuator body (4) to output a driving force. The driver element (8a, 8b) includes a first driver element (8a) and a second driver element (8b) which are provided on the mounting surface (40a) at different positions in a longitudinal direction of the actuator body (4). The first driver element (8a) and the second driver element (8b) are located at different positions in a thickness direction of the actuator body (4).

Abstract: A recording medium storing an AVClip structured by multiplexing video stream and a graphics stream. The graphics stream represents a moving picture made of a plurality of pictures, and the graphics stream includes graphics data representing graphics to be combined with the pictures. The graphics stream also includes window information (WDS) that specifies a window for rendering the graphics, and that indicates a width, a height and a position of the window on a plane which is a plane memory of a reproduction apparatus that combines the graphics with the pictures.

Abstract: The present invention aims to provide a power converter with an arm including switching devices connected in parallel, realizing long lifespans of switching devices. An inverter includes an upper and a lower arm, and gate drive circuits each driving the corresponding arm according to a gate control signal Gup_s indicating ON/OFF periods. Each arm includes switching devices connected in parallel. Each gate drive circuit includes: a switching gate control circuit 230u bringing a switching device 210u into conduction at the beginning of the ON period and bringing the same out of conduction within the ON period; and a conduction gate control circuit 231u bringing switching devices 211u and 212u within a period from when the switching device 210u is brought into conduction until the same is brought out of conduction, wherein the switching device 210u has a lower parasitic capacitance than the switching devices 211u and the 212u.

Abstract: A light guiding device can be used for a reader/writer device (1) for a noncontact communication medium. The light guiding device includes a light guide plate (10) which includes: a transparent main body part (17) which can transmit light inputted from an LED (9); and a protruding part (18) which is provided so as to protrude from a part of an end surface of the transparent main body part (17). A diffusely reflecting part (19) is provided on a lower surface side of the transparent main body part (17), and a first light emitting part (7) is provided on an upper surface side of the transparent main body part (17). Reflecting parts (21) are provided on an upper surface side and a lower surface side of the protruding part (18), and a second light emitting part (8) is provided at a leading end of the protruding part (18). In the case where the first light emitting part (7) is covered by the noncontact communication medium, the second light emitting part (8) makes it possible to check a light emitting state.

Abstract: A current-mode filter includes a first, a second, and a third transistor having the same channel polarity. The drain of the first transistor is connected to the source of the second transistor functioning as a gate grounded circuit. The drain of the second transistor is connected to the gates of the first and third transistors. A first and a second capacitive element are connected to the gate and drain of the first transistor. The current source supplies a bias current to each of the first and second transistors. The drain of the first transistor is used as an input terminal. An output signal is extracted from a drain current of the third transistor. Therefore, only one transconductance adjustment circuit is enough.

Abstract: An electrode foil for capacitor includes a substrate made of a valve metal foil, a first rough surface layer made of a valve metal formed on the first surface of the substrate by vapor deposition, and a second rough surface layer made of a valve metal formed on the second surface of the substrate by vapor deposition. The mode of diameters of pores of the first and second rough surface layers ranges from 0.02 ?m to 0.10 ?m. The thickness of the first rough surface layer is larger than the thickness of the second rough surface layer. The electrode foil has the rough surface layers formed by vapor deposition fabricated stably so that a solid electrolytic capacitor with high capacitance can be obtained using the foil.

Abstract: An induction heating cooker including a top plate where a pan is placed; a heating coil for induction heating the pan; an inverter circuit for supplying a high frequency current to the heating coil; an infrared sensor, which is arranged under the heating coil and detects an infrared light radiated from the pan; a light guiding part including an upper opening formed at an upper end facing the top plate and a lower opening formed at a lower end, and guiding the infrared light from the pan to the infrared sensor; and a control unit for controlling an output of the inverter circuit according to an output from the infrared sensor; wherein the light guiding part includes a nonmetallic material part in which the upper opening is formed upper than a lower surface of the heating coil.

Abstract: A host device 200A includes a data buffer 250. When data has been already written to a part of a physical block and data is additionally written to the physical block, it is determined whether or not the data written to the physical block is held in the data buffer. When the data is held, data is written to the block, and when an error exists, data in unit of physical blocks is rewritten. When the data is not held in the data buffer, a new physical block is required to be secured and then, data is written to the new block. Thereby, even when power is shut off or an error occurs during writing in the semiconductor memory device, destruction of data already written is prevented.

Abstract: A biosensor includes a cavity for holding a sample, an electrode system for measuring the sample concentration in the cavity, and a thermocouple for obtaining temperature information during measurement. A measurement device includes a reference temperature junction sensor or an environmental temperature sensor for measuring the temperature of reference temperature junctions of the thermocouple. A temperature compensation measures the temperature difference between a measuring junction and a reference temperature junctions of the thermocouple, and specifies the temperature of a reference temperature junction, thereby using the temperature information as the temperature of a measurement component and performing accurate temperature compensation from the measuring junction temperature information and the environmental temperature information with respect to the measured values.

Abstract: This motor includes a stator whereupon a plurality of magnetic poles are arranged at first prescribed intervals on the outer circumference section, and a rotor which is rotatively arranged on the outer circumference of the stator by having a prescribed space in between and has permanent magnets magnetized to different polarities at second prescribed intervals. The magnetic pole of the stator forms an extending section which extends from a magnetic pole base section in a direction parallel to the permanent magnet, and the extending length of the extending section in the direction parallel to the permanent magnet is same as that of the magnetic pole base section in the direction parallel to the permanent magnet or shorter.

Abstract: A network monitoring device which monitors a network in which data is transmitted through relays, includes a monitoring frequency recording unit (111) which records monitoring frequencies for monitoring transmission statuses of the relays, a selection probability generating unit (112) which generates selection probability information which is probability values for the relays, a monitoring object determining unit (113) which determines, according to the monitoring frequency and the selection probability information, a relay the transmission status of which is to be monitored, a transmission status obtaining unit (106) which obtains transmission status information indicating a transmission status on the relay determined, a transmission status recording unit (107) which records the transmission status information, an activation level calculating unit (109) which calculates, using the transmission status information, activation level indicating suitability of the monitoring on the transmission statuses of the re

Abstract: A data communication system for starting transmission and reception of target data for processing upon recognition that switching between communication modes is completed. The data communication system includes a master communication device and a slave communication device that continuously perform, at a time of switching from half-duplex communication to full-duplex communication, (i) a handshake using a directional control code indicating the switching and a preamble code indicating completion of the switching and (ii) a handshake using the preamble code and an acknowledge code indicating receipt of the preamble code, whereby each of the devices recognizes that the switching between communication modes by the opposite device is completed and starts transmission and reception of the target data.

Abstract: A content reproduction device includes: a plurality of communication units (a cellular phone and a wireless LAN communication unit), each receiving a content transmitted in segments from a content transmission device over a communication path; a content reconstruction unit that has a buffer in which each segmented data of the content received by each of the communication units is temporarily accumulated, and that reconstructs each segmented data accumulated in the buffer into the content; a reproduction unit that reproduces, at a predetermined bit rate, the content reconstructed by the content reconstruction unit; and a communication control unit that: calculates, for every predetermined time, target transmission speeds to be assigned for content reception performed by the respective communication units, based on free space in the buffer and the bit rate; and transmits a first request signal indicating the calculated target transmission speeds to the content transmission device via one of the communication un

Abstract: A method of manufacturing a memory cell array in which first conductive layers (2) and second conductive layers (14) extend above a semiconductor substrate (1) and three-dimensionally cross with each other, and memory cells each of which includes a current steering element (10) and a variable resistance element (23) electrically connected in series to each other is provided at a corresponding one of three-dimensional cross points between the first conductive layers (2) and the second conductive layers (14).

Abstract: A biosensor is disclosed comprising a support; a conductive layer composed of an electrical conductive material such as a noble metal, for example gold or palladium, and carbon; slits parallel to and perpendicular to the side of the support; working, counter, and detecting electrodes; a spacer which covers the working, counter, and detecting electrodes on the support; a rectangular cutout in the spacer forming a specimen supply path; an inlet to the specimen supply path; a reagent layer formed by applying a reagent containing an enzyme to the working, counter, and detecting electrodes, which are exposed through the cutout in the spacer; and a cover over the spacer. The biosensor can be formed by a simple method, and provides a uniform reagent layer on the electrodes regardless of the reagent composition.

Abstract: A vector quantization apparatus performs coding of a linear predictive coding coefficient by multi-stage vector quantization. A first codebook and a second codebook store code vectors, and a storing section stores scalars. A first quantizing section extracts a first code vector stored in the first codebook and performs first stage quantization for quantizing a target vector using the first code vector. A second quantizing section extracts a second code vector stored in the second codebook, calculates a third code vector by multiplying the second code vector and one of the scalars stored in the storing section, performs distance calculation using the target vector, the first code vector and the third code vector, and performs second stage quantization for quantizing the target vector using a result of the distance calculation. Each scalar stored in the storing section is associated with at least one of the vectors stored in the first codebook.

Abstract: An optical element driving device is provided with at least one optical element, a moving member, a fixed member, a first actuator, a first detection element, a second actuator, and a second detection element. The first actuator has a first coil and a first magnet. The first detection element is substantially aligned in a first direction relative to the first coil to detect the position of the moving member in the first direction. The second actuator has a second coil and a second magnet. The second detection element is substantially aligned in the first direction relative to the second coil to detect the position of the moving member in a second direction. The optical element, the first actuator, and the second actuator are substantially aligned in the first direction.

Abstract: A battery mounting mechanism includes a terminal connector, a first stopper, a second stopper, and a release button. The first stopper is disposed movably in the Z axis direction with respect to the terminal connector. The second stopper is disposed on the opposite side of the terminal connector with respect to the first stopper, and is disposed movably in the Z axis direction with respect to the terminal connector. The release button is arranged to release the restriction of the first battery or the restriction of the second battery by the first stopper, and arranged to drive the first stopper and the second stopper in the Z axis direction with respect to the terminal connector.

Abstract: A first and second gate electrodes are formed on a first and second active regions, respectively. The first and second gate electrodes have a first and second metal-containing conductive films, respectively. The first and second metal-containing conductive films are formed on the isolation region for segmenting the first and second active regions to be spaced apart from each other. A third metal-containing conductive film, which is a part of each of the first and second gate electrodes, is continuously formed from a top of the first metal-containing conductive film through a top of the isolation region to a top of the second metal-containing conductive film. The third metal-containing conductive film is in contact with the first and second metal-containing conductive films.

Abstract: An electric double layer capacitor includes a first collector, a first polarizable electrode layer provided on the first collector, a second collector, a second polarizable electrode layer provided on the second collector and facing the first polarizable electrode layer, a separator having an insulating property and provided between the first polarizable electrode layer and the second polarizable electrode layer, and a driving electrolyte impregnated in the first polarizable electrode layer and the second polarizable electrode layer. The polarizable electrode layers mainly contain activated carbon made from phenol resin, have a surface roughness not larger than 0.6 ?m, and have an electrode density ranging from 0.5 g/cm3 to 0.7 g/cm3. This electric double layer capacitor has characteristics deteriorating little even at low temperatures, thus having a reliability for a long time.

Abstract: A converter utilizing synchronous rectification comprises a first switch, a second switch connected in series to the first switch, and a gate drive circuit controlling each switch to switch to on/off-state using pulse-width modulation. Each switch includes a channel region that is conductive in both forward and reverse directions in on-state and is not conductive in the forward direction in off-state, and a unipolar diode region conductive only in the reverse direction. The gate drive circuit synchronizes output timing for signal with which the first switch switches to on-state with output timing for signal with which the second switch switches to off-state, and synchronizes output timing for signal with which the first switch switches to off-state with output timing for signal with which the second switch switches to on-state.

Abstract: A non-aqueous electrolyte secondary battery including: an electrode group in which a positive electrode and a negative electrode are spirally wound with a separator interposed therebetween; and a non-aqueous electrolyte including a non-aqueous solvent and a lithium salt dissolved in the non-aqueous solvent, the positive electrode including a positive electrode material mixture layer containing a nickel-containing lithium composite metal oxide, wherein a product of A and B equals 150 to 350, A equals 15 to 20%, and B equals 8 to 25%, where A (%) represents a porosity of the positive electrode material mixture layer, and B (%) represents a volume percentage of ethylene carbonate in the non-aqueous solvent.