Abstract: When a three-dimensional image of a specific subject is acquired by means of an infrared camera and an external light (for example, external light such as sunlight at the time of outdoor photography) having a relatively large intensity exists, it is difficult to acquire the image. To this end, the present invention proposes an electronic device for reducing a current peak by adaptively changing optical power and an exposure time of an infrared camera according to the intensity of external light.

Abstract: A method of calculating depth information for a three-dimensional (3D) image includes generating a pattern based on the value of at least one cell included in a two-dimensional (2D) image, projecting the pattern, capturing a reflected image of the pattern, and calculating depth information based on the reflected image of the pattern.

Abstract: When a three-dimensional image of a specific subject is acquired by means of an infrared camera and an external light (for example, external light such as sunlight at the time of outdoor photography) having a relatively large intensity exists, it is difficult to acquire the image. To this end, the present invention proposes an electronic device for reducing a current peak by adaptively changing optical power and an exposure time of an infrared camera according to the intensity of external light.

Abstract: A method of calculating depth information for a three-dimensional (3D) image includes generating a pattern based on the value of at least one cell included in a two-dimensional (2D) image, projecting the pattern, capturing a reflected image of the pattern, and calculating depth information based on the reflected image of the pattern.

Abstract: An apparatus and a method for controlling an electronic device are provided. The electronic device includes a housing, a holder positioned in a first surface of the housing to mount an external electronic device thereon, a beam projector positioned in a second surface of the housing, a mirror positioned between the first surface and the second surface to reflect a content outputted from the beam projector, an input unit provided in the housing, a transceiver communicable with the external electronic device, and a processor. The processor is configured to control for receiving the content from the external electronic device, outputting the content using the beam projector, and adjusting a direction in which the mirror is positioned according to a rotation control signal on the mirror received from the external electronic device through the transceiver or received through the input unit to adjust a direction in which the content is reflected.

Abstract: An illumination optical system for a beam projector includes: a light source; a color conversion unit having at least one fluorescent substance layer that reflects a light from the light source or converts the light emitted from the light source to a wavelength-converted light; and a dichroic mirror that causes the light emitted from the light source to be incident on the color conversion unit. Lights reflected or emitted by the conversion unit and having different wavelengths are incident on a display panel through the same path. In the illumination optical system, a light emitted from one light source can be processed to produce red, green and blue lights which can be in turn incident on the display panel through the same optical path of the light reflected or emitted by the conversion unit.

Abstract: A projector and a method for operating the projector are provided, in which an optical module alternately emits first image information and second image information at intervals, and an optical path switch is installed to be switched on or off from a traveling path of the first and second image information emitted from the optical module.

Abstract: A portable projector includes a projector module for projecting image data, an infrared ray output unit which outputs an infrared ray to a projected image data area, a camera unit which photographs the projected image data area, a coordinate value calculator which calculates a coordinate value corresponding to each coordinate value of the photographed projected image data area, and a controller which determines whether there is a pen or a finger input in the projected image data area according to the calculated coordinate value and performing a control for updating the image data by using an input coordinate value corresponding to the input when there is input by the one of the pen and the finger.

Abstract: A method of displaying image data is provided, which includes analyzing histograms by color signals of an input image frame; confirming grayscales by color signals in a predetermined frame unit with reference to the analyzed histograms; determining dimming factors in consideration of maximum grayscale values of the grayscales; determining image gains of the image data by color signals using the determined dimming factors; and outputting an image signal by applying the image gains to the input image and applying the dimming factors to a light source.

Abstract: An illumination optical system for a beam projector includes: a light source; a color conversion unit having at least one fluorescent substance layer that reflects a light from the light source or converts the light emitted from the light source to a wavelength-converted light; and a dichroic mirror that causes the light emitted from the light source to be incident on the color conversion unit. Lights reflected or emitted by the conversion unit and having different wavelengths are incident on a display panel through the same path. In the illumination optical system, a light emitted from one light source can be processed to produce red, green and blue lights which can be in turn incident on the display panel through the same optical path of the light reflected or emitted by the conversion unit.

Abstract: A light source driving apparatus is disclosed which includes a power supply including a power supply terminal connected to a first path through which a power source is supplied to a light source and including a feedback terminal for receiving a feedback of the power source supplied to the light source, a feedback resistor connected to the feedback terminal, and a current divider for branching a current flowing into the first path and supplying the branched current to the feedback resistor.

Abstract: A portable projector includes a projector module for projecting image data, an infrared ray output unit which outputs an infrared ray to a projected image data area, a camera unit which photographs the projected image data area, a coordinate value calculator which calculates a coordinate value corresponding to each coordinate value of the photographed projected image data area, and a controller which determines whether there is a pen or a finger input in the projected image data area according to the calculated coordinate value and performing a control for updating the image data by using an input coordinate value corresponding to the input when there is input by the one of the pen and the finger.

Abstract: An image projector for calibrating a color of an image and recalibrating the color of the image is provided. The image projector includes an illuminating optical part having at least three independent light sources; a light modulator for modulating light emitted from the illuminating optical part according to an image signal; an imaging optical part for projecting the light modulated by the light modulator onto the screen to form an image; and a photo sensor disposed in a light path traveling in a different direction than a direction of the light beam to be projected on the screen, receiving a portion of the light beam modulated by the light modulator and providing measurement values necessary for a color calibration.

Abstract: A method and apparatus for calibrating a color temperature of a projector that creates a light of a desired color by mixing primary lights. The method includes setting target values for the mixed light, measuring color coordinate values for the primary lights, calculating the target brightness values for the primary lights using the target values and the measured color coordinate values, and calibrating the output of the primary lights output from the projector based on the calculated target brightness values.

Abstract: Disclosed is an image control system using a mobile projector, including a first apparatus configured to determine, when a first picture is projected and a user input for a specific image is received, whether the projected first picture is projected onto the specific image, and if so, control the specific image to perform an operation corresponding to the user input, and a second apparatus configured to, receive the user input from the first apparatus, determine whether the first picture is projected onto the specific image, and if so, perform an operation corresponding to the user input.

Abstract: Provided is a light emitting device of an electronic device, provided with a DLP (Digital Light Processing) projector and a display unit, which is configured in such a manner that the light generated by the operation of the DLP projector can be re-used as a backlight light of the display unit. The disclosed light emitting device includes a first mirror for projecting a light of the DLP projector on a flat area provided ahead of the first mirror in an intermediate operation state of the first mirror; a light concentration mirror for converging the light projected on the flat area, the light concentration mirror being provided at a position adjacent to the flat area; and an optical fiber for transferring the light converged by the light concentration mirror to the display unit and enabling re-use of the transferred light as a light for a backlight of the display unit.

Abstract: A projector and a method for operating the projector are provided, in which an optical module alternately emits first image information and second image information at intervals, and an optical path switch is installed to be switched on or off from a traveling path of the first and second image information emitted from the optical module.

Abstract: A mobile projector and method are provided for performing Auto Focusing (AF). The mobile projector includes a projection system for projecting an image onto a screen, a camera module for receiving an input image which is the projected image, an edge detection logic for detecting an edge value of the input image, and a controller for controlling the edge detection logic to detect the edge value of the input image, and controlling focusing of the mobile projector based on the edge value.

Abstract: A light source driving apparatus for sequentially driving a plurality or light sources is provided. The light source driving apparatus includes a light source power supply for supplying a power source necessary for driving the plurality of light sources, a light source controller for generating a control signal to sequentially turn on and off the plurality of light sources, a soft starter connected between the light source power supply and the light sources, for delaying the power source generated from the light source power supply for a first determined time and supplying the delayed power source to the light sources, and a control signal delayer connected between the light source controller and the light sources, for delaying an ON signal of the control signal generated from the light source controller for a second predetermined time and supplying the delayed signal to the light sources.

Abstract: An image projector for calibrating a color of an image and recalibrating the color of the image is provided. The image projector includes an illuminating optical part having at least three independent light sources; a light modulator for modulating light emitted from the illuminating optical part according to an image signal; an imaging optical part for projecting the light modulated by the light modulator onto the screen to form an image; and a photo sensor disposed in a light path traveling in a different direction than a direction of the light beam to be projected on the screen, receiving a portion of the light beam modulated by the light modulator and providing measurement values necessary for a color calibration.