Patent ID: 11967608
Assignee: DONGBANG DATA TECHNOLOGY CO., LTD
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 2:
3. The PIS distributed type automatic power-saving electronic display board according to claim 1, wherein the MCU further comprises: a main processor configured to receive an image data from the image signal source and generate a driving current to drive each of light sources of the LED electronic display board module; a frame memory, configured to store the image data of the image signal source when the image data is reproduced through an image switcher, and retrieve and transmit the stored image data; a PIS power-saving controller configured to histogram-equalize the image signal inputted thereto through the frame memory to set the value of the current flowing through the LED, and allow the gain controller to compare the set current value with the difference between the image reference value of the gamma controller and the correction value of the histogram-equalized image and determine the change in the subtraction loss value based on the power consumption difference of the display image in consideration of image quality change, brightness, and image size to designate a current value for display on the electronic display board so that the power-saving operation of the LED module is automatically performed; a gray pixel controller configured to adjust the refresh rate cycle based on the gray scale in response to the image signal inputted thereto from the image signal source to improve the refresh rates of high and low gray scales to capture a uniformly distributed balance in the time domain so that the frame frequency of the output image is adjusted to reduce flickering caused by pigmentation; a gamma controller configured to switch and display, by scanning, an image in which an image data value with a gamma value determined on a histogram has been gray-scaled by the gray pixel controller to perform an equalization operation on the image through gamma correction of the image and the histogram of the brightness of the image; and an auto flicker detector configured to set a flicker frequency detected and an integration time adjusted according to the occurrence of a flicker based on the input cycle and transmit the detected flicker frequency and the adjusted integration time to the LED electronic display board module to display a corresponding image signal on the LED electronic display board module so that an image with reduced flickering caused by pigmentation is displayed on the LED electronic display board module according to the temporal and cyclic flow.