Abstract: A cell stack management system includes a cell monitoring unit that measures an output voltage of a plurality of power storage cells, a battery management unit that manages a cell stack, and a first communication network that connects the cell monitoring unit and the battery management unit. The battery management unit includes: a first communication circuit connected to the first communication network; a second communication circuit connected to a second communication network for connecting to a higher-level system; a control circuit that controls the battery management unit; and a control circuit power supply. The cell stack management system includes a normal mode and a low-power mode as modes of operation. During transition from the low-power mode to the normal mode, the first communication circuit activates at least one of the control circuit power supply, the control circuit, or the second communication circuit.

Abstract: A first generation section (106) sequentially turns k first signals to the output state. A second generation section (107) sequentially turns m second signals to the output state. A total of (k×m) output circuits (X1 to Xkm) are divided into k groups. Each of the k groups includes m output circuits. The k first signals correspond to the k groups, and the m second signals correspond to the m output circuits belonging to each of the k groups. Each of the (k×m) output circuits outputs its corresponding second signal when the second signal is turned to the output state if the first signal corresponding to the group to which the output circuit belongs is in the output state.

Abstract: A liquid crystal display device according to the present invention includes: a liquid crystal panel 11; a source driver 12 for controlling the gray-scale level by applying a voltage to the liquid crystal panel 11; a DC-DC power supply 13 for driving the source driver 12 by supplying current to the source driver 12; a controller 14 for supplying a signal for controlling the gray-scale level to the source driver 12; and a variation calculator 15 for calculating the amount of change in the signal from the controller 14. In the DC-DC power supply 13, current to be supplied to the source driver 12 changes in accordance with the amount of change in the signal calculated by the variation calculator 15.

Abstract: A driving voltage control device includes a first to fourth capacitor, and an output section. In the first mode, the first capacitor receives a first voltage and stores a corresponding amount of charge, the second capacitor receives a second voltage and stores a corresponding amount of charge, and the output section supplies either one of a voltage according to the amount of charge stored in the first capacitor or second capacitor to a first output node according to a predetermined timing. In the second mode, the third capacitor receives a third voltage and stores a corresponding amount of charge, the fourth capacitor receives a fourth voltage and stores a corresponding amount of charge, and the output section supplies either one of a voltage according to the amount of charge stored in the third capacitor or fourth capacitor to a second output node according to a predetermined timing.

Abstract: A thermoelectric converting device includes a P type thermoelectric element, an N type thermoelectric element, the N type thermoelectric element connected with the P type thermoelectric element alternately to be electrically in series, an electrode circuit contacting the P type thermoelectric element and the N type thermoelectric element, an insulation substrate, at least one electric circuit forming a layer with the electrode circuit via the insulation substrate, and a conduction member for electrically conducting the electrode circuit and the electric circuit.

Abstract: A memory access switchover circuit relays a data access to the image memory by a writing control circuit and a data access to the image memory by the display control circuit. A blanking period change control circuit extends the blanking period in a display frame at timing of reception of start of the writing operation upon receiving the start of the writing operation to the image memory by the wiring control circuit. The writing control circuit outputs a request for writing the image data to the memory access switchover circuit upon receiving the input of the image data. The memory access switchover circuit switches from the data access by the display control circuit to the data access by the writing control circuit when the request for writing is received.

Abstract: A control unit performs the first-third controls. The first control controls a group of switch elements so that a step-up voltage is supplied to a voltage output terminal by a pumping action of a step-up voltage accumulating capacity element by applying the reference power source voltage to the reference power source voltage accumulating capacity element in an inverse direction, after execution of an electric charge accumulating action with the reference power source voltage in the reference power source voltage accumulating capacity element. The second control controls the group of switching elements so as to provide a dead-time period, during which the reference power source and the reference power source voltage accumulating element are disconnected, between a period of the electric charge accumulating action and a period of the pumping action and between the period of pumping action and the period of electric charge accumulating action.

Abstract: A compact-size driving voltage controller is provided which can be driven with low power. The compact-size driving voltage controller which can be driven with low power includes a High output operational amplifier and a Low output operational amplifier for supplying driving voltages VcomH, VcomL to a load such as a liquid crystal display panel, an output switch for alternating between the outputs of the operational amplifiers, a Low voltage setting operational amplifier for generating a set voltage to be supplied to the non-inverted input terminal of the Low output operational amplifier, a set voltage generator including a current mirror circuit and a clamping circuit, a bias current controller for controlling the bias current flowing in each operational amplifier with a predetermined timing, and a timing controller for controlling the changeover timing of the output switch.

Abstract: A driving voltage control device includes a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, and an output section. In the first mode, the first capacitor receives a first voltage and stores an amount of charge according to a voltage value of the first voltage, the second capacitor receives a second voltage and stores an amount of charge according to a voltage value of the second voltage, and the output section supplies either one of a voltage according to the amount of charge stored in the first capacitor and a voltage according to the amount of charge stored in the second capacitor to a first output node according to a predetermined timing.

Abstract: A liquid crystal display device according to the present invention includes: a liquid crystal panel 11; a source driver 12 for controlling the gray-scale level by applying a voltage to the liquid crystal panel 11; a DC-DC power supply 13 for driving the source driver 12 by supplying current to the source driver 12; a controller 14 for supplying a signal for controlling the gray-scale level to the source driver 12; and a variation calculator 15 for calculating the amount of change in the signal from the controller 14. In the DC-DC power supply 13, current to be supplied to the source driver 12 changes in accordance with the amount of change in the signal calculated by the variation calculator 15.

Abstract: A thermoelectric converting device includes a P type thermoelectric element, an N type thermoelectric element, the N type thermoelectric element connected with the P type thermoelectric element alternately to be electrically in series, an electrode circuit contacting the P type thermoelectric element and the N type thermoelectric element, an insulation substrate, at least one electric circuit forming a layer with the electrode circuit via the insulation substrate, and a conduction member for electrically conducting the electrode circuit and the electric circuit.

Abstract: The present invention provides a compact-size driving voltage controller which can be driven with low power. The compact-size driving voltage controller which can be driven with low power includes a High output operational amplifier and a Low output operational amplifier for supplying driving voltages VcomH, VcomL to a load such as a liquid crystal display panel, an output switch for alternating between the outputs of the operational amplifiers, a Low voltage setting operational amplifier for generating a set voltage to be supplied to the non-inverted input terminal of the Low output operational amplifier, a set voltage generator including a current mirror circuit and a clamping circuit, a bias current controller for controlling the bias current flowing in each operational amplifier with a predetermined timing, and a timing controller for controlling the changeover timing of the output switch.

Abstract: A thermoelectric semiconductor compound is provided whose performance index Z is remarkably improved without sacrificing Seebeck coefficient, electrical conductivity or thermal conductivity. The thermoelectric semiconductor compound includes a first thermoelectric semiconductor which is in the form of matrix and a second thermoelectric semiconductor which is in the form of particles dispersed in the matrix. The first thermoelectric semiconductor and the second thermoelectric semiconductor have a common element. The average diameter D of the dispersed particles complies with a formula of A<D<B, where A is the mean free path of a carrier in a single crystal of the second thermoelectric semiconductor and B is the mean free path of a long wave length phonon in the single crystal of the second thermoelectric semiconductor. A method for making the a thermoelectric semiconductor compound is provided.