The rotating type electric sign board and method for driving thereof

Abstract

A rotary electronic display panel and a driving method thereof. The rotary electronic display panel turns on or off each LED at the correct position regardless of the change in the rotation speed of the drive motor, and displays text and image data correctly and sharply without using expensive encoders, thereby reducing product cost and improving product quality. price competitiveness. The rotary electronic display panel includes: a driving motor for rotating a rotating shaft at a predetermined speed; a rotating body connected to the rotating shaft to rotate at a predetermined radius of rotation; an LED array provided on the rotating body; an origin pulse a generator that generates an origin pulse when the rotating body rotates one revolution; a line pulse generator that uses the origin pulse to calculate the rotation period of the rotating body, and generates a plurality of line pulses, each line pulse having a value corresponding to the a period of a resultant value obtained by dividing the rotational period of the rotating body by the number of effective areas separated along the rotating radius of the rotating body; and a controller for generating a control signal to selectively turn on or turn off the LED array, The desired text and image data are thus displayed at the generation of each line pulse.

Description

technical field [0001] The present invention relates to an electronic display board (also known as an electronic signage board), and more particularly to a method for displaying text and image data more clearly and significantly reducing product manufacturing costs by selectively turning on or off LED (Light Emitting Diode) arrays. A rotary electronic display panel and a method for driving the electronic display panel. Background technique [0002] Generally, electronic display boards are used to display images or text information. Recently, various electronic display panels composed of optical fibers, LEDs, LCDs, etc. have been proposed. In particular, due to the wide application of large-scale high-brightness and multi-color LEDs, various electronic display boards have been commercially developed, such as large-size electronic display boards, subway-guided electronic display boards, and other electronic display boards for advertising. display board and more. [0003] Ho...

AI Technical Summary

Problems solved by technology

[0011] However, the aforementioned conventional rotary electronic display panel has the disadvantage that required text or image data cannot be correctly displayed due to the non-constant rotational speed of the driving motor, so a driving motor controller is required to maintain a constant rotational speed of the driving motor, thereby resulting in increased cost and increased size of the electronic display board

Also, another rotary electronic display panel using an encoder including a disc and a photocoupler is very expensive, thereby inevitably increasing the manufacturing cost and reducing the price competitiveness of the product in the market

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