Abstract: A solar power generation system includes a string, an inverter a first shut-off device, and a second shut-off device. The string includes a plurality of solar cell module groups connected in series. The first shut-off device is connected to a first electric path connecting between the plurality of solar cell module groups. The second shut-off device is connected to a second electric path connecting between the plurality of solar cell module groups. The first shut-off device cuts off a connection between the plurality of solar cell module groups connected to the first electric path in response to a first control signal from the inverter. The second shut-off device is driven by an electrical power supplied from the first shut-off device and cuts off a connection between the solar cell module groups connected to the second electric path in response to a second control signal from the first shut-off device.

Abstract: A solar power generation system includes a string, an inverter a first shut-off device, and a second shut-off device. The string includes a plurality of solar cell module groups connected in series with each other. The first shut-off device cuts off a connection between the plurality of solar cell module groups connected to a first electric path connecting between the plurality of solar cell module groups in response to a first control signal from the inverter. The second shut-off device is connected to the first shut-off device in a two-way communicable manner by a communication system different from power line communication and cuts off a connection between the solar cell module groups connected to a second electric path connecting between the plurality of solar cell module groups in response to a second control signal output from the first shut-off device by a communication system different from power line communication.

Abstract: A solar power generation system includes a string, an inverter a first shut-off device, and a second shut-off device. The string includes a plurality of solar cell module groups connected in series with each other. Each of the solar cell module groups includes one or a plurality of solar cell modules connected in series. The first shut-off device cuts off a connection between the plurality of solar cell module groups connected to a first electric path in response to a first control signal from the inverter. The second shut-off device is connected to the first shut-off device in a two-way communicable manner, is driven by an electrical power supplied from the first shut-off device, and cuts off a connection between the plurality of solar cell module groups connected to a second electric path in response to a second control signal from the first shut-off device.

Abstract: In a sphygmomanometer of the present invention, a cuff is attached to a rotating shaft on a rear surface side opposite to a front surface side arranged facing a subject during blood pressure measurement. A swing mechanism maintains a tilt angle of a central axis of the cuff with respect to a horizontal plane at a certain standby angle in a standby state of an upper arm not being inserted into the cuff, and also allows the tilt angle of the cuff to become either larger or smaller than the standby angle by the upper arm being inserted into the cuff.

Abstract: A memory device includes an array of memory cells and a controller configured to access the array of memory cells to program a selected memory cell of the array of memory cells to a target level based on a compensation value of a program command. The controller is further configured to sense a threshold voltage of the selected memory cell. The controller is further configured to in response to the compensation value having a first value and the threshold voltage being greater than a first program verify level, inhibit programming of the selected memory cell. The controller is further configured to in response to the compensation value having a second value different from the first value and the threshold voltage being greater than a second program verify level less than the first program verify level, inhibit programming of the selected memory cell.

Abstract: A display device includes pixel circuits each including a transistor and supplies a drive current to each light emitting element, scan lines and data lines connected to the pixel circuits, a select driver which selects a scan lines, and a control unit which controls driving of the select driver. The control unit repeatedly executes a gradation display operation, a non-gradation display operation and a detecting operation in the order. In the gradation display operation, a gradation display voltage is applied to the pixel circuit connected to a selected scan line. In the non-gradation display operation, a non-gradation display voltage is applied to the pixel circuit connected to a selected scan line. In the detecting operation, a characteristic of the transistor of the pixel circuit connected to one or more scan lines is detected to correct the gradation display voltage based on a detection result of the detecting operation.

Abstract: The light emitting device comprises at least one data line, at least one pixel, a common electrode, a data driver and an ammeter, The pixel comprises a pixel drive circuit and a light emitting element, in which the pixel drive circuit includes a first transistor electrically connected to the data line and one end of the light emitting element, and the other end of the light emitting element is connected to the common electrode. The ammeter measures the current value of a detection current flowing from the data driver to the ammeter via the data line, the first transistor, the light emitting element of the pixel, and the common electrode when the data driver applies to the data line a first set voltage having such a potential that applies a forward bias voltage between both ends of the light emitting element via the first transistor.

Abstract: In a pixel driving device that drives a plurality of pixels, each pixel includes a light emitting element and a pixel driving circuit comprising a driving device having one end of a current path connected to one end of the light emitting element and having another end of the current path to which a power-source voltage is applied. Provided in a controller is a correction-data obtaining function circuit which obtains a first characteristic parameter relating to a threshold voltage of the driving device of each pixel based on a voltage value of each data line after a first detection voltage is applied to each data line connected to each pixel, and a current is caused to flow through the current path of the driving device through the each data line with a voltage of another end of the light emitting element being set to be a first setting voltage.

Abstract: A pixel includes a light emitting element and a driving element connected to the light emitting element. After an initial voltage is applied to one end of a current path of the driving element via the signal line, the pixel driving device acquires the threshold voltage of the driving element based on a voltage value at a terminal of the signal line when the initial voltage is cut off and the relaxation time is elapsed. The voltage-current characteristics of the driving element is acquired based on the voltage value at the terminal of the signal line when the current flows into the current path of the driving element via the signal line. The current gain value of the driving element is acquired based on the threshold voltage of the driving element. The image data is corrected based on the acquired threshold voltage.

Abstract: In a pixel driving device that drives a plurality of pixels, each of the plurality of pixels includes a light emitting element, and a pixel driving circuit comprising a driving device having one end of a current path connected to one end of the light emitting element and having another end of the current path to which a power-source voltage is applied. Provided in a controller is a correction-data obtaining function circuit that obtains a characteristic parameter including a threshold voltage of the driving device of each pixel based on a voltage value of each of a plurality of data lines connected to each of the plurality of pixels with a voltage of another end of the light emitting element being set to be a setting voltage. The setting voltage is a voltage set based on a voltage value of each data line at a predetermined timing.

Abstract: A display drive apparatus includes a detection voltage applying circuit that applies a predetermined detection voltage to the drive element of the pixel drive circuit, a voltage detecting circuit that detects a voltage value corresponding to a device characteristic unique to the drive element after a predetermined time elapses after the application of the detection voltage to the drive element by the pixel drive circuit, and a gradation designating signal generating circuit that generates a gradation designating signal based on an absolute value of a voltage component according to a gradation value of display data and a value, acquired by multiplying an absolute value of the voltage value detected by the voltage detecting circuit, by a constant greater than 1, and applies the gradation designating signal to the pixel drive circuit, whereby a change in device characteristic.

Abstract: A display pixel including a light-emitting element and a drive element for supplying current flowing in a current path to the light-emitting element is applied with a detection voltage based on a predetermined unit voltage. Based on a value of current flowing in the current path of the drive element, a specific value corresponding to an element characteristic of the drive element is detected. A gradation voltage corresponding to a luminance gradation of display data is generated. Based on the specific value and the unit voltage, a compensated voltage is generated. By compensating the gradation voltage based on the compensated voltage, a compensated gradation voltage is generated. And the compensated gradation voltage is supplied to the display pixel.

Abstract: A display device includes a display panel having a plurality of signal lines and scanning lines with a plurality of display pixels containing current control type light emitting devices; a scan driver circuit which applies a scanning signal to each of the scanning lines and sets the display pixels connected to the scanning lines in a selective state; a signal driver circuit which generates gradation current based on a display data luminosity gradation component and supplies to the display pixels set in the selective state; a precharge circuit which applies a precharge voltage to each signal line and sets a capacity component attached to each of the scanning lines in a predetermined charged state; and an operation control circuit which controls setting of the light emitting devices in a non-light emitting state when the capacity component is set in a predetermined charged state.

Abstract: A data acquisition circuit sets one of the potential value at one end of a signal line and the value of a current flown thereto when one end of a current path of a drive device is connected to a light emitting device with the other end thereof set to a potential value where no current flows to the light emitting device. Then the circuit causes current to flow via the current path and the signal line and acquires one of the value of the current flown to the signal line and the potential value at the one end of the signal line according to the set value. A correction operation circuit acquires a threshold voltage and a current amplification factor of the drive device based on one of the current and potential values thus acquired as well as on one of the potential and current values thus set.

Abstract: A display pixel including a light-emitting element and a drive element for supplying current flowing in a current path to the light-emitting element is applied with a detection voltage based on a predetermined unit voltage. Based on a value of current flowing in the current path of the drive element, a specific value corresponding to an element characteristic of the drive element is detected. A gradation voltage corresponding to a luminance gradation of display data is generated. Based on the specific value and the unit voltage, a compensated voltage is generated. By compensating the gradation voltage based on the compensated voltage, a compensated gradation voltage is generated. And the compensated gradation voltage is supplied to the display pixel.

Abstract: An emission apparatus includes an emission element, a pixel drive circuit connected to the emission element, a data line connected to the pixel drive circuit, and an emission drive apparatus that, in a selection period, lets a reference current with a predetermined current value flow to the pixel drive circuit via the data line, derives a compensation voltage which is a difference between a potential which varies according to a unique characteristic of the pixel drive circuit and a predetermined reference potential, and generates a correction gradation voltage to be applied to the pixel drive circuit based on the compensation voltage for causing the emission element to emit light at an appropriate luminance gradation.

Abstract: A pixel driving device for drive control of pixels, has a image data conversion circuit for generating an original gradation signal by converting an image data, based on a preset conversion property, a signal correction circuit for outputting a corrected gradation signal by adding a correction value acquired based on an electric property parameter of a pixel to the original gradation signal, and a drive signal impressing circuit for impressing a voltage signal corresponding to the corrected gradation signal on one end of a signal line. The original gradation signal has a value that corresponds to a gradation value of the image data and the maximum value of the original gradation signal is set to a value equal to or smaller than a value acquired by subtracting a value corresponding to the correction value from a maximum value in an input range of the drive signal impressing circuit.

Abstract: A light emitting device has a plurality of pixels, each of which includes a drive transistor, a light emitting element and signal lines, a property parameter acquisition circuit which acquires property parameter, a signal correction circuit that generates a corrected gradation signal by correcting the image data based on the property parameter, and a drive signal impressing circuit that impresses a drive signal, generated based on the corrected gradation signal, on the pixel to drive it. The property parameter is constituted of a threshold voltage, a current amplification factor and its irregularity of the drive transistor, and is acquired based on measured voltages of the signal lines after each of a plurality of predetermined settling times elapses from the time when the light emitting device cuts off a voltage subsequent to impressing the voltage on each pixel for a predetermined length of time.

Abstract: A pixel driving device has a voltage impressing circuit that outputs a reference voltage that exceeds a threshold voltage of a drive transistor, a voltage measurement circuit, and a property parameter acquisition circuit that acquires a property parameter related to an electronic property of a pixel. The pixel driving device impresses the reference voltage on the pixel that has a light emitting element and the drive transistor. The voltage measurement circuit acquires voltage of a signal line, as measured voltages, after each of a plurality of the settling times elapsing from the time when the reference voltage is cut. The property parameter acquisition circuit acquires, as property parameters, the threshold voltage and a current amplification factor of drive transistor based on values of a plurality of measured voltages acquired by the voltage measurement circuit.

Abstract: A pixel driving device in which, after a reference voltage exceeds a threshold voltage of a drive transistor is impressed through the signal lines on each pixel equipping a light emitting element and the drive transistor, set the signal lines in a state of high impedance, and acquires a voltage value of one end of the signal lines subsequent to a predetermined settling time elapsing, and acquires the threshold voltage of the drive transistor for each pixel and the current amplification factor of the pixel drive circuit as a first property parameter based on acquired voltage values at the time a plurality of first settling times longer than a predetermined value and acquires an irregularity parameter indicating the irregularity in the current amplification factor based on the value of the first property parameter and the measured voltage value acquired at the time shorter than the predetermined value.