Abstract: A four-way dual scanning electronic display board capable of scan control, whereby, in order to provide drive control, an LED module arrangement method, and processing for each LED pixel dot (R, G, B), which are for easily enabling a high definition image, pixel display dots of an LED module are controlled by processing image display dots of the module by means of a four-way method by an automatic image switching device through the display control of SCU image switching, in order to display a high definition image through the four-way control of each image dot (R, G, B) pixel, and thus high resolution image quality may be enabled and displayed.

Abstract: Provided is an an LED electronic bulletin board enabling high-speed image calibration, which is configured to apply brightness calibration data in consideration of brightness characteristics according to a brightness value through determination of whether or not there is a difference in a brightness value of a pixel or a part of an expression portion of the LED electronic bulletin board, which is to be expressed, with respect to image information inputted through a pixel capacitor controller installed between an image input device and a main controller unit (MCU), and then calibrate the image data inputted in real-time to express brightness-calibrated image data on the LED electronic bulletin board so that the image brightness of the electronic bulletin board can be calibrated irrespective of a configuration of an electronic bulletin board expression driving circuit.

Abstract: Provided is an an LED electronic bulletin board enabling high-speed image calibration, which is configured to apply brightness calibration data in consideration of brightness characteristics according to a brightness value through determination of whether or not there is a difference in a brightness value of a pixel or a part of an expression portion of the LED electronic bulletin board, which is to be expressed, with respect to image information inputted through a pixel capacitor controller installed between an image input device and a main controller unit (MCU), and then calibrate the image data inputted in real-time to express brightness-calibrated image data on the LED electronic bulletin board so that the image brightness of the electronic bulletin board can be calibrated irrespective of a configuration of an electronic bulletin board expression driving circuit.