摘要:
An LED lighting device can compensate a brightness change and a color change caused by a temperature change and exhibit an in-plane uniform luminance and color. A lighting device includes: at least one line connected in parallel, a constant voltage source for applying a constant voltage to the line, an ON/OFF controller, and a current detector for measuring a value of current flowing in the line. The line is formed by one or more light-emitting diodes and a switch for turning ON/OFF the current flowing in the light emitting diodes connected in series. According to the current value of each of the lines measured by the current detector, the ON/OFF controller controls the ON/OFF period of the switch of each of the lines.
摘要:
The video display apparatus has a light modulation device for forming a picture in accordance with a video signal and a lighting unit for irradiating, on the light modulation device, illumination light necessary to cause it to display the picture. In the apparatus, the lighting unit irradiates the illumination light in sequence of individual plural illumination light source partitive areas, a luminance distribution calculating unit calculates luminance distributions of video signals corresponding to the plural partitive areas to determine illumination light luminance levels of the individual partitive areas, an illumination controller controls rays of the illumination light of individual areas of the lighting unit on the basis of determination by the luminance distribution calculating unit, and a video corrector corrects the video signal inputted to the light modulation device on the basis of the determination by the luminance distribution calculating unit.
摘要:
A liquid crystal display apparatus includes a liquid crystal display panel having a liquid crystal layer held between a pair of substrates; and a light source, a whose brightness of which is controllable, wherein the liquid crystal display apparatus further includes a unit for generating an image signal with a signal for controlling the liquid crystal layer configured in a display area of a frame-based pixel configuration and with a signal for controlling the light source configured in a blanking interval of the frame-based pixel configuration.
摘要:
The liquid crystal display apparatus includes a liquid crystal display, a backlight unit for emitting rays of light of three or more colors, the ray of each color being controlled, and applying these rays of light onto the liquid crystal display. A controller is further provided for controlling a change of display data of each color of the liquid crystal display and an emitted light quantity of each color of the backlight unit at a time, based on a video signal being inputted for displaying the corresponding image and an output signal sent from an ambient light sensor for sensing ambient light.
摘要:
The liquid crystal display apparatus includes a liquid crystal display, a backlight unit for emitting rays of light of three or more colors, the ray of each color being controlled, and applying these rays of light onto the liquid crystal display. A controller is further provided for controlling a change of display data of each color of the liquid crystal display and an emitted light quantity of each color of the backlight unit at a time, based on a video signal being inputted for displaying the corresponding image and an output signal sent from an ambient light sensor for sensing ambient light.
摘要:
The video display apparatus has a light modulation device for forming a picture in accordance with a video signal and a lighting unit for irradiating, on the light modulation device, illumination light necessary to cause it to display the picture. In the apparatus, the lighting unit irradiates the illumination light in sequence of individual plural illumination light source partitive areas, a luminance distribution calculating unit calculates luminance distributions of video signals corresponding to the plural partitive areas to determine illumination light luminance levels of the individual partitive areas, an illumination controller controls rays of the illumination light of individual areas of the lighting unit on the basis of determination by the luminance distribution calculating unit, and a video corrector corrects the video signal inputted to the light modulation device on the basis of the determination by the luminance distribution calculating unit.
摘要:
An LED lighting device can compensate a brightness change and a color change caused by a temperature change and exhibit an in-plane uniform luminance and color. A lighting device includes: at least one line connected in parallel, a constant voltage source for applying a constant voltage to the line, an ON/OFF controller, and a current detector for measuring a value of current flowing in the line. The line is formed by one or more light-emitting diodes and a switch for turning ON/OFF the current flowing in the light emitting diodes connected in series. According to the current value of each of the lines measured by the current detector, the ON/OFF controller controls the ON/OFF period of the switch of each of the lines.
摘要:
A display apparatus includes an illuminator for irradiating light onto the light bulb, and a control unit that includes a data analyzer for analyzing image data, an image memory for storing the image data, a display-data generating converter for converting the stored image data to display-data for the light bulb, and an illumination adjuster for adjusting the amount of light emission from the illuminator, in which the illuminator is divided into n controllable regions in the direction and the inputted image data is sequentially displayed on the light bulb, and the amounts of data conversion and light emission in the control unit are determined repeatedly n times within each frame period, and applied to each region of the illuminator and to each region of the light bulb opposite to the illuminator.
摘要:
A liquid crystal display apparatus that includes a liquid crystal display panel having a liquid crystal layer held between a pair of substrates, a light source whose brightness is controllable, and a normalization processing circuit that converts an image signal to a normalized signal and to a normalization coefficient. In addition, the display apparatus includes an LCD driving circuit that converts the normalized signal to an LCD driving signal for driving the liquid crystal display panel, and a light source driving circuit that converts the normalization coefficient to a light source driving signal for driving the light source. The normalization coefficient is used to set pixel values in a blanking interval of a display screen, and the normalized signal is used to set pixel values in a display area of the display screen.
摘要:
An LED lighting device can compensate a brightness change and a color change caused by a temperature change and exhibit an in-plane uniform luminance and color. A lighting device includes: at least one line connected in parallel, a constant voltage source for applying a constant voltage to the line, an ON/OFF controller, and a current detector for measuring a value of current flowing in the line. The line is formed by one or more light-emitting diodes and a switch for turning ON/OFF the current flowing in the light emitting diodes connected in series. According to the current value of each of the lines measured by the current detector, the ON/OFF controller controls the ON/OFF period of the switch of each of the lines.