Abstract: Disclosed herein are a sonar-image-simulation method for image prediction of an imaging sonar and an apparatus using the sonar-image-simulation method. The sonar-image-simulation method includes the models of ultrasound beams of the imaging sonar, a target object, and a background on which the target object is placed, which have been described as multiple straight lines, multiple polygons, and an infinite plane, respectively. The method also includes calculating intersection points of the multiple straight lines with the multiple polygons or the infinite plane to derive image data needed to construct simulated sonar images. Based on the computed image data, the method can construct the simulated sonar images of any arbitrary-shaped object.

Abstract: A position-controlled wave power generating apparatus. A position-controlled wave power generating apparatus is included a floating part floatable on a body of water, a motion conversion unit coupled to a floating part, a power generating unit generating electricity using a generator connected to a motion conversion unit, and a position control unit positioned below a water surface to generate a thrust from the energy of waves.

Abstract: Disclosed herein are an underwater docking system and a docking method using the system. An exemplary embodiment of the present invention relates to a system for docking a target body on a docking station under water, the system comprising: a guide unit provided to the docking station to transmit at least one guide signal to the target body; an agent unit connected to the docking station by a smart cable and disposed at a position spaced apart from the docking station so that the agent unit is moored under the water in a direction corresponding to a tidal current; and the target body configured to be guided toward the agent unit by the guide signal and then connected to a portion of the agent unit.

Abstract: A wave power generating apparatus is provided. A generator including a housing and a drive shaft coupled to the housing is coupled to a floating part that is floatable on a sea. The drive shaft is positioned on an extension of the center of rotation extending from the housing. A first rotary unit is coupled to the generator housing, is rotatable in a first direction together with the housing about the extension of the center of rotation, and includes a first blade able to pivot about a first pivot axis perpendicular to the extension of the center of rotation. A second rotary unit is coupled to the drive shaft of the generator, is rotatable in a second direction opposite to a direction in which the first rotary unit rotates, and includes a second blade able to pivot about a second pivot axis perpendicular to the extension of the center of rotation.

Abstract: An electronic apparatus having a heat discharging structure which divides light driving sources into driving devices generating high heat and driving devices generating relatively low heat, and a backlight unit for the electronic apparatus is provided. The electronic apparatus includes a liquid crystal display (LCD) panel; a light source module having a light source illuminating the LCD panel and a first board mounting the light source thereon; and a driving module having a first driving device mounted on the first board and a second driving device disposed separately from the first driving device.

Abstract: The present invention relates to a resin guardrail including a post, a plurality of guard plates coupled to the post, and connection members for connecting the guard plates to one another. Each of the guard plates of the guardrail is manufactured through extrusion. The guard plate comprises a hollow base body that takes the shape of a wave in cross section to include a rear ridge protruding rearward and having a flat portion and a front ridge protruding forward. The flat portion of the rear ridge and the front ridge are formed with first and second fastening holes, respectively, and the base body has solid portions for reinforcing regions with the first and second fastening holes formed therein.

Abstract: An apparatus and method is disclosed for controlling a display driving pulse to drive an LED display. In one embodiment, an RGB signal is received and a period during which all the LEDs are switched off is detected. Also, the period during which an image is not being displayed is also detected. The driving time of each LED is then extended by the detected periods so that the lighting time of the LED is extended, and brightness of the display as a whole is improved using the LED system.

Abstract: An image projection apparatus for adjusting a white balance in consideration of a temperature of an LED and a method thereof. The image projection apparatus includes a light source unit to sequentially emit lights generated by a red (R)-light emitting element, a green (G)-light emitting element, and a blue (B)-light emitting element. Light levels of the R-light emitting element, the G-light emitting element and the B-light emitting element change depending on changes in temperature. An image generation unit generates an image using the lights sequentially emitted from the light source unit and projects the image. A driving unit drives the light source unit and the image generation unit. A temperature sensor measures a temperature of the light source unit, and a controller controls a driving operation of the driving unit based on the temperature of the light source unit measured by the temperature sensor to adjust a white balance of the image projected from the image generation unit.

Abstract: An apparatus and method is disclosed for controlling a display driving pulse to drive an LED display. In one embodiment, an RGB signal is received and a period during which all the LEDs are switched off is detected. Also, the period during which an image is not being displayed is also detected. The driving time of each LED is then extended by the detected periods so that the lighting time of the LED is extended, and brightness of the display as a whole is improved using the LED system.

Abstract: An image control device using color coordinates includes a measurement color storage part for storing measured color coordinates of certain images differently displayed depending on the characteristics of image realization devices; a reference color storage part for storing reference color coordinates of the certain images; and a compensation part for compensating input image signals reflecting an extent of changes between the measured color coordinates and the reference color coordinates. If input images are compensated by the device, compensated images using reference color coordinates can be at once provided.

Abstract: A module holder is provided which includes a first foot for supporting one side of a module, a second foot for supporting the other side of the module, and slots detachably assembled between the first foot the second foot provided as many as are necessary corresponding to the number of modules to be mounted therein. An engaging unit may be formed between the first foot and the slot, between the adjacent slots, and between the slot and the second foot, for fixing each component detachably. Since the slots are formed as single products and engaging portions are formed between the slots, so that the slots can be separated or engaged, the slots can be assembled as many as are necessary corresponding to the number of modules to be mounted and modules may be added, if necessary. Accordingly, the space of the module holder occupying equipment can be minimized, improving the space utilization of the equipment.

Abstract: A module holder is provided which includes a first foot for supporting one side of a module, a second foot for supporting the other side of the module, and slots detachably assembled between the first foot the second foot provided as many as are necessary corresponding to the number of modules to be mounted therein. An engaging unit may be formed between the first foot and the slot, between the adjacent slots, and between the slot and the second foot, for fixing each component detachably. Since the slots are formed as single products and engaging portions are formed between the slots, so that the slots can be separated or engaged, the slots can be assembled as many as are necessary corresponding to the number of modules to be mounted and modules may be added, if necessary. Accordingly, the space of the module holder occupying equipment can be minimized, improving the space utilization of the equipment.