Abstract: A fuel-cell system is advantageous for repressing water from flowing backward from a reservoir to a condenser, flowing backward which results from the inside of the condenser being turned into negative pressure. The fuel-cell system has a fuel cell for generating electric power by reactant gas, a condenser for generating condensed water by condensing water content included in the reactant gas to be supplied to the fuel cell or in off gas of the reactant gas, and a reservoir for reserving the condensed water collected at the condenser. A drain valve is disposed between the condenser and the reservoir. The drain valve is switchable between a closed state in which communication between the condenser and the reservoir is shut off and an opened state in which the condenser is communicated with the reservoir to discharge the water in the condenser to the reservoir. A controller carries out inner-pressure increment and drain controls for opening the drain valve after increasing inner pressure in the condenser.

Abstract: Provided is an image display device capable of dynamically controlling the D-V characteristics of a display panel while suppressing fluctuation in characteristic for each display panel. The display panel has a panel display portion including a red pixel, a green pixel, and a blue pixel. A storage unit stores V-L characteristic data measured in advance of RGB. A D-L calculation unit calculates D-L characteristic data of RGB based on the display setting values stored in a register. A D-V calculation unit calculates D-V characteristic data of RGB based on the V-L characteristic data stored in the storage unit and the D-L characteristic data calculated by the D-L calculation unit. A DAC generates a driving voltage corresponding to a video signal input from a timing controller based on the D-V characteristic data calculated by the D-V calculation unit and applies the driving voltage to each pixel.

Abstract: Provided is an image display device including: a pixel circuit; a power supply line; a data line for supplying a data signal to the pixel circuit; and a current path control unit. The pixel circuit includes: a light emitting element; a drive transistor for controlling a current flowing to the light emitting element; a storage capacitor provided between the data line and a gate electrode of the drive transistor, for storing a potential difference; and a data line connection switch for connecting one end of the storage capacitor on the gate electrode side of the drive transistor and the data line. Before the data line supplies the data signal, the data line connection switch is turned ON, and the current path control unit interrupts a current path from the power supply line to the one end of the storage capacitor.

Abstract: A document presentation device comprising an imaging unit that takes images of documents and a display unit that displays the images of documents taken by the imaging unit.

Abstract: A first bar code that is reproduced by linearly polarized red light (first read light) parallel to a short-side direction and a second bar code that is reproduced by linearly polarized green light (second read light) parallel to a long-side direction are recorded on a birefringence label. A probe is a reading device that reads the first and second bar codes from the birefringence label and includes first and second light sources and an imaging unit. The first light source emits the first read light to the birefringence label. The second light source emits the second read light to the birefringence label at a time different from that of the first read light. The imaging unit captures the birefringence label through a polarizing plate having a transmission axis aligned with the short-side direction of the birefringence label, and acquires reproduced images of the first and second bar codes.

Abstract: Provided is an image display device, in which light emission period control signals are applied to a plurality of pixels holding voltages based on grayscale values, to emit from light emitting elements. During a horizontal synchronizing period, an active period of each of the light emission period control signals is divided into two periods. A start of one of the divisional periods coincides with a start of the horizontal synchronizing signal. An end of the other divisional period coincides with an end of the horizontal synchronizing signal. The active periods of the light emission period control signals (G) and (B) are equal to or larger than 80% of the active period of the light emission period control signal (R). An active period of a light emission control signal is synchronized with the light emission period control signal (R).

Abstract: A display device is provided which displays images by emitting light when a reference voltage is applied to pixels. An average picture level calculation unit of a reference voltage calculation unit in a rectangular wave driving unit of a TFT substrate calculates the value of average picture level, and a ?V calculation unit of a reference voltage calculation unit calculates a correction amount ?V of the reference voltage based on the average picture level value. The calculated correction amount ?V is added to a reference voltage and is used as the voltage of a rectangular wave signal that is output to each pixel from a rectangular wave driving unit. In each pixel in which a data signal corresponding to the grayscale value is stored, an organic EL device emits light in accordance with the rectangular wave signal.

Abstract: A data presentation apparatus having a function to generate a pointer image pointing a position in a presentation image is provided and includes: an image transmission section that transmits an image data of the presentation image to a terminal; a receiver that receives a control signal to determine a display position of the pointer image in the presentation image, the control signal being transmitted from the terminal; and an image generation section that generates an image data of a composite image based on the control signal, the composite image including the presentation image and the pointer image displayed in the presentation image.

Abstract: A circuit configuration for realizing high impedance in an address drive circuit is provided in order to reduce the number of recovery switches without reducing power recovery efficiency. A mechanism for realizing the high impedance in an address drive circuit during a sustain period of a plasma display panel is provided. By achieving the high impedance, capacitance coupling between an X electrode and an address electrode and between a Y electrode and an address electrode can be cancelled, and a power recovery circuit can be simplified without reducing the power recovery efficiency.

Abstract: A fuel-cell system is advantageous for repressing water from flowing backward from a reservoir to a condenser, flowing backward which results from the inside of the condenser being turned into negative pressure. The fuel-cell system has a fuel cell for generating electric power by reactant gas, a condenser for generating condensed water by condensing water content included in the reactant gas to be supplied to the fuel cell or in off gas of the reactant gas, and a reservoir for reserving the condensed water collected at the condenser. A drain valve is disposed between the condenser and the reservoir. The drain valve is switchable between a closed state in which communication between the condenser and the reservoir is shut off and an opened state in which the condenser is communicated with the reservoir to discharge the water in the condenser to the reservoir. A controller carries out inner-pressure increment and drain controls for opening the drain valve after increasing inner pressure in the condenser.

Abstract: In the case of applying the ABL control to a display device having electron emitters disposed in a matrix, voltage drop caused by the scan line resistance is corrected, thereby displaying a preferable image without a smear. A high voltage load current limiting section for calculating drive voltage alteration data based on a high voltage load current detection signal from a high voltage load current detection section, and a scan voltage correction section for calculating a scan voltage based on the drive voltage alteration data are provided, thus the scan voltage in accordance with the high voltage load current detection signal is output to a scan line selection circuit. Further, a voltage drop correction section is provided to subtract the drive voltage alteration data from the drive voltage data obtained from image data input thereto, and signal voltage data is calculated and is output to the signal line drive circuit 15.

Abstract: A current detection data is acquired by a scanning line current detection resistance, an adder-subtracter and an A/D converter. the current detection data is inputted to a voltage correction circuit, the voltage correction circuit output a correction signal. Using the correction signal, a scanning electrode voltage correction circuit performs the correction of the scanning selection voltage. Further, the voltage correction circuit generates data electrode drive data based on the current detection data and image data and inputs the data electrode drive data to a data electrode drive circuit. the present invention prevent a change of brightness and of smear with time.

Abstract: A presentation device for generating a virtual screen used for performing a pointing operation, has a photographing section of which an angle of view can be adjusted by operating a zoom function and a pan-and-tilt mechanism, a monitor for a presenter, displaying an image photographed by the photographing section, and a control section. A mark for generating the virtual screen is set on a photographing range of the photographing section or the monitor, a virtual screen area having a predetermined size is set within the angle of view of the photographing section based on the mark, and the control section generates XY coordinates of the virtual screen on the virtual screen area.

Abstract: A data presentation apparatus having a function to generate a pointer image pointing a position in a presentation image is provided and includes: an image transmission section that transmits an image data of the presentation image to a terminal; a receiver that receives a control signal to determine a display position of the pointer image in the presentation image, the control signal being transmitted from the terminal; and an image generation section that generates an image data of a composite image based on the control signal, the composite image including the presentation image and the pointer image displayed in the presentation image.

Abstract: A presentation system comprises a display for setting a virtual screen, a pointing mark for operating a point on the display, a photographing device for photographing the pointing mark and the display, a displaying device for displaying a predetermined image or the photographed image photographed by the photographing device, and a control device. The control device calculates coordinates of the pointing mark on coordinates of the virtual screen and has a pointing function for synthesizing a predetermined point image at coordinates of the image on the displaying device, which correspond to the coordinates of the pointing mark.

Abstract: A material presentation device connecting at least two material presentation devices to each other, comprises a first selecting device for selecting one image as a main image from plural images composed of an image output by another material presentation device, a camera image of a material on a material mounting pedestal, which is photographed by a photographing section, an image stored in a memory device, and an external image output by an external device connected thereto, a second selecting device capable of selecting no image or one image as an additional image from plural images composed of a camera image of a material on the material mounting pedestal, which is photographed by the photographing section, an image stored in the memory device and an external image output by the external device, a point image generating device for generating a point image from point information which is subtracted from an image photographed by the photographing section, an image synthesizing section for synthesizing the ad

Abstract: A document presentation device comprising an imaging unit that takes images of documents and a display unit that displays the images of documents taken by the imaging unit.

Abstract: A tool capable of easily producing a presentation content based on image exhibition is provided. The system allowed for making a presentation while taking an image of a material put on a material base of a material-presenting device by an imager device and projecting the image onto a screen. The real-time data of an image projected to the screen during presentation and the real-time data of a voice explanation are recorded, as presentation content data, in a content-producing device. The presentation is again reproduced as it is while reproducing the present-content data as primary data. On this occasion, by operating the material-presenting device in proper timing, the content is edited. By repeating the editing together with re-playing the presentation, a quality presentation content can be easily produced.

Abstract: A presentation system comprises: a screen device; a projecting device for projecting an image onto the screen device; an indication mark for setting two reference points, which is two orthogonal points on a rectangular virtual screen, near a presenter and for the presenter operating a point on the virtual screen; a photographing device for photographing the virtual screen and the indication mark; and an arithmetic operation device for generating coordinates of the virtual screen from the two reference points photographed by the photographing device, and for calculating coordinates of the indication mark on the generated virtual screen. The projecting device projects a point image onto the coordinates of the indication mark on the image.

Abstract: A pointing device has an image indicating device; a photographing device provided in the image indicating device; an image movement detecting device for detecting a movement of a photographed image photographed by the photographing device; a calculating device for calculating a moving direction and a moving distance of a point image corresponding to the movement of the image; and a signal generating device for generating a signal for synthesizing the point image with a displayed image, wherein the position of the displayed point image is moved in accordance with the movement of the image photographed by the photographing device.