Abstract: A motor driving circuit includes a wiring pattern formed in a circuit board, which is configured such that electrical current flowing into a motor flows through the wiring pattern; and a current measurement circuit configured to measure an amount of electrical current flowing through the wiring pattern, based on an amount of voltage drop occurring in response to flowing of the electrical current. The motor driving circuit includes a drive unit configured to adjust a current measurement value measured by the current measurement circuit, based on first adjustment data that compensates for variation in resistance of the wiring pattern caused by an individual difference in the circuit board, and to drive the motor based on an adjusted current value which is the adjusted current measurement value.

Abstract: This camera actuator is provided with a stationary-side member, a movable-side member which is provided to the stationary-side member in a displaceable manner and which holds a lens section, and a drive section which displaces the movable-side member in a plane including a first direction and a second direction which is perpendicular to the first direction. The movable-side member has a magnet affixation section for affixing a magnet section thereto such that the magnet section faces the stationary-side member, the magnet section being used for detecting the position of the movable-side member in either the first direction or the second direction. The surface of the magnet affixation section, to which the magnet section is mounted, is formed from metal.

Abstract: A connector 1 includes a connector housing 11, a thin wire coaxial cable 17 for providing a coaxial connection between an external coaxial cable 2 and a circuit board provided in a separated housing and a shield member 12 which is provided in an inner space of the connector housing 11 and electrically connected to a shell 173 of the thin wire coaxial cable 17. The shield member 12 has a holding mechanism for holding the thin wire coaxial cable 17.

Abstract: A lens drive apparatus has: a fixed part; a moving part disposed apart from the fixed part and comprising a lens holder, an elastic member, and a magnet holder connected with the lens holder via the elastic member such that the lens holder is capable of displacing in a direction of an optical axis; a driving part configured to displace the moving part with respect to the fixed part in a direction orthogonal to the optical axis by interaction of a plurality of magnets and a plurality of coils, the plurality of magnets held by the magnet holder, the plurality of coils disposed to the fixed part to face the plurality of magnets; and a supporting member configured to support the moving part with respect to the fixed part such that the moving part is capable of displacing in the direction orthogonal to the optical axis.

Abstract: An imaging device contains an elongated cylindrical housing having a tip side opening and a base side opening; a control unit provided in the housing and having a control processor and a memory; a camera module provided in the housing so as to be capable of imaging an outside on a tip end side of the housing from the tip side opening of the housing in response to control from the control processor of the control unit, and a connector provided in the housing so that a tip portion of the connector is exposed from the base side opening of the housing toward an outside on a base side of the housing. The memory of the control unit stores parameters for correcting distortion of an image obtained by the camera module.

Abstract: An antenna device includes an antenna unit that receives radio waves of a plurality of first frequency bands and outputs received signals, and a first band pass filter that transmits, out of the received signals that are output, received signals of at least two second frequency bands out of the first frequency bands.

Abstract: This lens driving device comprises an autofocus (AF) driving unit and a shake correction driving unit, wherein a shake correction support member has a pair of power supply suspension wires and a pair of signal suspension wires. While an AF movable unit includes a position detecting magnet, an AF fixation unit includes an AF power source line, a signal line, a coil power source line, and an AF control unit. The AF control unit includes a hole element, and a coil control unit which controls current passing through an AF coil part, and an AF circuit board on which the hole element and the coil control unit are mounted. As a result of contact between a lens holder and a base which has rigidity higher than that of a coil substrate, movement of the AF movable unit toward a formed image in the optical axis is restricted.

Abstract: A semiconductor device includes first and second trenches, and a first layer provided therebetween, in a principal surface of a semiconductor substrate, a second layer in contact with and sandwiching the first trench with the first layer, a third layer provided under the second layer and in contact with the second layer and the first trench, a fourth layer provided under and in contact with the third layer but separated from the first trench, and a fifth layer provided in the principal surface and sandwiching the second trench with the first layer. The second and fourth layers are semiconductors of a first conductivity type, and the first, third, and fifth layers are semiconductors of a second conductivity type. A gate trench electrode is provided inside the first trench via the insulating film, and an emitter trench electrode is provided inside the second trench via the insulating film.

Abstract: Disclosed is a switching power supply device including: a transformer for voltage conversion; a main switching element connected in series to a primary coil; a primary side control circuit that performs on/off control of the main switching element; a synchronous rectification MOS transistor connected in series to a secondary coil; and a secondary side control circuit that performs on/off control of the MOS transistor, wherein the secondary side control circuit includes: an off-timing detection circuit that compares a drain voltage of the MOS transistor with a predetermined threshold voltage, and detects a timing to turn off the MOS transistor; and a threshold voltage setting circuit that sets the threshold voltage, and the threshold voltage setting circuit sets the threshold voltage based on a conduction period of the secondary coil or a period obtained by adding the conduction period to a conduction period of the primary coil.

Abstract: A sensor drive circuit for driving a sensor with a current includes a first current source configured to generate a first current having a temperature characteristic of which a first order coefficient is positive and of which a second order coefficient is negative. The sensor drive circuit includes a second current source configured to generate a second current having a temperature characteristic of which a first order coefficient is negative and of which a second order coefficient is negative. The sensor drive circuit includes a current amplifier configured to amplify a third current, the third current being set by adding the first current and the second current. The sensor drive circuit includes a constant current source configured to generate a temperature-corrected constant current, such that a drive current for the sensor is set by adding the constant current to the amplified third current.

Abstract: A DC power supply device includes a switching power supply and a current stabilizing circuit connected in a pre-stage or a post-stage of the switching power supply. The DC power supply voltage device is configured to receive an input DC voltage from a DC power source via a power-supply line, convert the input DC voltage into a different DC voltage, and output the converted DC voltage.

Abstract: Disclosed is a power supply device including a first direct-current power source that generates a direct-current voltage to be supplied to a device that is a load, and a second direct-current power source that generates a direct-current voltage to be supplied to a sensor that detects a physical quantity. The first direct-current power source is an output variable type power source that generates a direct-current voltage that changes according to a signal from the sensor, and the second direct-current power source is an output fixed type power source that generates a constant direct-current voltage.

Abstract: A rechargeable battery protection circuit protects a rechargeable battery, using two NMOS transistors inserted in series in a current path between a battery cathode and a positive terminal connected to load or power terminal of a charger. The protection circuit includes a booster circuit that generates a control voltage, using input capacitances of the NMOS transistors having gates connected to charge and discharge control terminals, respectively. A driving circuit sets the output state of the control terminals to a high level, by supplying the control voltage to the control terminals, a detection circuit detects a battery state and outputs a detection state, and a control circuit operates the driving circuit based on the detection state, so that the output state of the control terminals is selected by the driving circuit to at least one of three states including a high level, a low level, and a high-impedance state.

Abstract: A vibration actuator includes a movable body provided with one of a coil and a magnet that is disposed radially inward of the coil with a gap formed therebetween, a fixing body provided with the other of the coil and the magnet and a shaft portion, and an elastic support portion, the movable body vibrating in a vibration direction by means of cooperation between the coil supplied with power and the magnet. The movable body is provided with a through-hole into which the shaft portion is inserted with a gap formed between the through-hole and an outer peripheral surface of the shaft portion and the elastic support portion supports the movable body such that the movable body does not come into contact with the shaft portion at a time when the movable body does not vibrate and at a time when the movable body vibrates.

Abstract: A lens driving device includes: a fixing part; a movable part; and an actuator configured to displace the movable part in a direction orthogonal to the optical axis direction; in which the fixing part includes a coil substrate, a base member made of a non-conductive material, the base member including a base side through hole, and a terminal member made of a conductive material and partially embedded in the base member, the terminal member including a first connecting part serving as an external terminal and a second connecting part configured to be connected with the coil substrate, and in which in plan view in the optical axis direction, the second connecting part and the base side through hole are disposed to overlap each other, and the second connecting part and the coil substrate are connected by a solder provided inside the base side through hole.

Abstract: A light scanning apparatus includes a light source configured to output laser light, and a mirror configured to reflect the laser light from the light source. The light scanning apparatus includes a mirror driving unit configured to resonantly drive the mirror in a first direction and non-resonantly drive the mirror in a second direction, the second direction being perpendicular to the first direction. The light scanning apparatus includes a first sensor configured to output a signal in accordance with a first deflection angle at which the mirror is oriented with respect to the first direction. The light scanning apparatus includes a second sensor configured to output a signal in accordance with a second deflection angle at which the mirror is oriented with respect to the second direction.

Abstract: A secondary battery protection circuit for protecting a secondary battery with multiple connected-in-parallel cells, includes a charging fault detection unit for each cell for prohibiting charging of the corresponding cell when overcharging and/or charging over-current for the corresponding cell is detected; a charging control element for each cell for cutting off a charging path for the corresponding cell when the charging of the corresponding cell is prohibited; a detection resistor for each cell inserted in series in the charging path; and a balance control unit for, in order to balance a first charging current flowing in a first charging path for a first cell with a second charging current flowing in a second charging path for a second cell, controlling a difference between the first and second charging currents in a saturation region of the charging control element based on a detection voltage generated by the detection resistor.

Abstract: A battery pack includes a secondary battery, a secondary battery protecting integrated circuit configured to protect the secondary battery, at least one sensor configured to output a fault signal indicating sensing of a fault in the battery pack or an electronic apparatus including the battery pack, a detecting circuit configured to output a fault detection signal indicating a detection of the fault signal, a delay circuit configured to output a pulse delaying from the fault detection signal, and a counter configured to count a number of generating the pulse, the counter having at least N bits (N is an integer greater than 1), wherein the counter stops an operation until a count of 2(N-1).

Abstract: A battery control circuit controls a balance of cell voltage values of cells coupled in series, and includes connection terminals respectively coupling to a positive electrode of a corresponding cell, a ground terminal coupled to an internal ground of the battery control circuit and coupling to a negative electrode of a cell located at a lowest stage of the cells, a control circuit to select, from the connection terminals, at least one connection terminal coupled to the internal ground via an internal current path of the battery control circuit, and a current generation circuit to supply a terminal current whose current value varies according to the cell voltage value of the cell whose positive electrode is coupled to the at least one of the connection terminals selected by the control circuit, from the at least one of the connection terminals to the internal ground via the internal current path.

Abstract: A camera module has a magnet which is held by a magnet holder included in an optical device part together with a lens holder and which is used in common as a magnet in collaboration with a first coil to move an imaging device and the lens holder relative to each other in a direction of an optical axis, a magnet in collaboration with a second coil to move the imaging device and the optical device part relative to each other in a direction orthogonal to the optical axis, and a magnet of which a magnetic force is detected by a Hall device.