Abstract:
A display apparatus comprising a display unit and a plurality of light emitting diodes (LEDs) provided in a backlight that illuminates the display unit, the display apparatus includes: a power supplier; a current detector which detects a value of a current flowing in each of the LEDs; a current adjusting unit which compares a target current value which is supplied to the LED with a current value detected by the current detector and controls the value of the current flowing in the LED; and a controller which determines the target current value based on grayscale information of a video signal which is displayed on the display unit, provides the target current value to the current adjusting unit, and provides a virtual target current value that is higher than the target current value to the current adjusting unit for a predetermined time period if the target current value is determined.
Abstract:
A power supply device for a luminous element and a method thereof are provided. The power supply device includes an output calculation unit for calculating a brightness level of the luminous element, a current command signal generation unit for generating a current command signal so that a current value being supplied to the luminous element is adjusted by stages, and a constant current source for adjusting by stages the current being supplied to the luminous element according to the current command signal. According to the power supply device, the ascending period and the descending period can be shortened, and light output characteristics can be improved by improving the transient characteristic through an adaptive adjustment of current in the ascending period and the descending period.
Abstract:
A liquid crystal display device, includes: a liquid crystal panel; a point light source which emits light to the liquid crystal panel; and a light source driver which comprises a power input terminal to receive initial power, a power supply to supply power to the point light source according to the initial power and a reference current, and a reference current controller to output the changed reference current according to the changed initial power, to the power supply.
Abstract:
A display device with a display region and a non-display region surrounding the display region, the display device comprising: a first substrate and a second substrate. The first substrate comprises: a first insulating substrate; a gate line formed on the first insulating substrate; a pixel thin film transistor formed on the display region and electrically connected to the gate line; a pixel electrode electrically connected to the pixel thin film transistor; a gate driver formed on the non-display region and connected to the gate line; and a direct current (DC)/DC converter formed on the non-display region and having a capacitance part. The capacitance part includes: a first capacitance part with a first electrode, a first dielectric layer, and a second electrode; and a second capacitance part with the second electrode, a second dielectric layer, and a third electrode.
Abstract:
An image restoration device, an image restoration method, and an image restoration system are provided. The image restoration device includes a point spread function estimation unit, and an image restoration filter unit. The point spread function estimation unit receives an image signal and estimates a Point Spread Function (PSF) from the received image signal. The image restoration filter unit receives the image signal and the PSF, generates an image restoration filter coefficient from the PSF, and filters the image signal according to the image restoration filter coefficient to output the filtered image signal.
Abstract:
A display apparatus and a method thereof including: a display unit which displays an image based on a video signal; a battery unit which supplies battery power; and a controller which controls adjusts brightness of the image based on residual quantity of the battery unit when the battery power is supplied.
Abstract:
An audio/video (AV) apparatus and a signal control method thereof are provided. The AV device includes: an AV interface which is configured to transmit and receive a first signal including AV data according to an High-Definition Multimedia Interface (HDMI) standard and to transmit and receive a second signal including an integrated data packet; a signal converter which selectively converts a received signal received through the AV interface; and a controller which determines whether the received signal is the first signal or the second signal, and controls the signal converter to bypass the received signal or convert the received signal into a converted signal according to the determination.
Abstract:
A developing device includes a toner storage area containing toner, a developing portion in which a developing roller is installed, and a housing including a toner supply window to connect the toner storage area and the developing portion. A pair of rails is disposed on the toner supply window to extend in a lengthwise direction of the developing roller, and a blocking member including a blocking portion is provided to open and close the toner supply window when the blocking member is removed from and inserted into the pair of rails from outside of the housing, respectively.
Abstract:
A backlight unit and a display apparatus are provided. The display apparatus includes a power supply unit which outputs a first voltage; a light emitting unit which includes a first end connected to the power supply unit, and a second end, the first end receiving the first voltage from the power supply unit; and a compensation unit which includes a first end connected to the second end of the light emitting unit, and which compensates a deviation between the first voltage and a rated voltage of the light emitting unit.
Abstract:
Disclosed are a backlight unit and a display apparatus. The display apparatus including: an image receiver receiving an image signal; an image processor processing an image signal received by the image receiver; a display panel displaying an image signal processed by the image processor into an image; a plurality of light guide plates disposed corresponding to divided display regions of the display panel respectively and providing light to the display regions respectively; and a light source module selectively disposed between adjacent light guide plates and radiating light to a lateral side of the light guide plates, if the light source module is not disposed between a first light guide plate and a second light guide plate which are adjacent each other among the plurality of light guide plates, light being radiated to the first light guide plate and the second light guide plate in opposite directions.