Abstract: A method for producing a particle, containing a step of heating a mixture containing TiH2 and TiO2 at 700 to 950° C., wherein a molar ratio of the TiH2 to the TiO2 contained in the mixture is 5.0 to 6.8.

Abstract: An illumination system capable of varying the light emission intensity of illumination light while maintaining the color balance of the illumination light is provided. An additive process illumination system obtaining a specific color light by mixing a plurality of color lights, the illumination system may include a plurality of light sources each emitting a different color light; a lighting period varying means for varying the lighting period of each light source; a light emission intensity varying means for varying the light emission intensity of each light source; and a control means for controlling the lighting period varying means and the light emission intensity varying means to control the light emission amount of each light source.

Abstract: A light source device, performing partial lighting operation and having a function of detection of illuminated light with improved precision is provided. The light source device including: a light source section having a plurality of partial lighting sections each controlled separately; a drive means for time-divisionally driving the light source section with a pulse signal so that a whole lighting time period and a partial lighting time period are mixed along time base; a photoreception device receiving light from the light source section; and a sampling means for sampling, at a timing in the partial lighting time period, a photoreception signal from the photoreception device. The drive means controls a width of the pulse signal immediately before a transition from the whole lighting time period to the partial lighting time period so that the width is equal to or less than a given threshold value.

Abstract: A light source device capable of adjusting luminance distribution of a display picture in consideration of lightness of surrounding environment (environment light) not depending on a content of the display picture is provided. An outside light sensor 16 receives outside light (environment light Ls) around the device. According to a light quantity of the received environment light Ls, a backlight control section 12 respectively controls a light emission quantity of each partial lighting section 4 in a light source section 10. It is possible that the light emission quantity of each partial lighting section 4 is respectively controlled by using luminance information of a picture contained in an RGB signal supplied from an RGB processing section 60 in addition to the light quantity of the environment light Ls.

Abstract: Herein disclosed a backlight apparatus for illuminating a color display panel from the back side, which may include a light source section having a composite light source, a light detecting light introducing plate, a plurality of light amount sensors for the individual colors, and control means.

Abstract: A drive device for a light emitting diode element comprises a light emitting diode element circuit part configured to be formed by connecting at least one light emitting diode element based on a predetermined connection form, a power supply unit configured to generate a direct-current (DC) supply voltage for driving the light emitting diode element of the light emitting diode element circuit part for light emission of the light emitting diode element, and apply the DC supply voltage to the light emitting diode element circuit part, a power-supply application on/off unit configured to be provided to turn on/off application of the DC supply voltage to the light emitting diode element circuit part, and a current control circuit part configured to be caused to switch its operation so as to carry out constant current operation if application of the DC supply voltage is in an on-state and carry out voltage keeping operation if application of the DC supply voltage is in an off-state.

Abstract: In a demodulation process of a first modulated signal and a second modulated signal, phase adjustment is automatically performed by generating, in response to demodulation results, an optimum phase value of a second internal reference wave for demodulating the second modulated signal. A phase of a second internal reference wave for demodulating the first modulated signal is also adjusted using the optimum phase value for the automatic adjustment.

Abstract: Herein disclosed a backlight apparatus for illuminating a color display panel from the back side, which may include a light source section having a composite light source, a light detecting light introducing plate, a plurality of light amount sensors for the individual colors, and control means.

Abstract: A drive device for a light emitting diode element may include a light emitting diode element circuit part configured to be formed by connecting at least one light emitting diode element based on a predetermined connection form, a power supply unit configured to generate a direct-current (DC) supply voltage for driving the light emitting diode element of the light emitting diode element circuit part for light emission of the light emitting diode element, and apply the DC supply voltage to the light emitting diode element circuit part, a power-supply application on/off unit configured to be provided to turn on/off application of the DC supply voltage to the light emitting diode element circuit part, and a current control circuit part configured to be caused to switch its operation so as to carry out constant current operation if application of the DC supply voltage is in an on-state and carry out voltage keeping operation if application of the DC supply voltage is in an off-state.

Abstract: An illumination system capable of varying the light emission intensity of illumination light while maintaining the color balance of the illumination light is provided. An additive process illumination system obtaining a specific color light by mixing a plurality of color lights, the illumination system may include a plurality of light sources each emitting a different color light; a lighting period varying means for varying the lighting period of each light source; a light emission intensity varying means for varying the light emission intensity of each light source; and a control means for controlling the lighting period varying means and the light emission intensity varying means to control the light emission amount of each light source.

Abstract: In a demodulation process of a first modulated signal and a second modulated signal, phase adjustment is automatically performed by generating, in response to demodulation results, an optimum phase value of a second internal reference wave for demodulating the second modulated signal. A phase of a second internal reference wave for demodulating the first modulated signal is also adjusted using the optimum phase value for the automatic adjustment.

Abstract: A disc playback apparatus for playing back a disc on which data have been recorded under a CLV control is provided with a CLV control section for performing a CLV control, a speed comparator and a reference clock generator for performing a CAV control, a changeover switch for switching between the CLV control and the CAV control, and a CPU for setting a switching point of the changeover switch and controlling the switching of the changeover switch. According to another aspect of the invention, switching is made between a playback with a CLV servo control and a playback with a CAV servo control in accordance with the reproduction scanning position in the disc radial direction. In particular, a difference between disc rotation speeds at the disc innermost and outermost tracks is made smaller than that in a case where a playback is performed at a specific linear velocity over the disc entire area.

Abstract: A disc reproducing device and a disc reproducing method for reproducing a disc-shaped recording medium (combined disc) on which first data to be reproduced at a first reproducing rate and second data to be reproduced at a second reproducing rate faster than the first reproducing rate are recorded, wherein the first data and second data are recorded in separate areas on the disc. The disc is rotatable at a second reproducing rate. Responsive to a readout command, data is read out from a desired position on the disc, and output data is checked as to whether it is the first data or the second data. If the data is the first data, the output data is stored in the buffer memory unit at the second reproducing rate. On the other hand, the first data of the buffer memory unit is read out at a first reproducing rate, while the second data is accessed if the first data is not being read out from the disc.