LED Panel Control via Differential Frame Data Transmission
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Solution Overview
Problem
LED panel systems face challenges in maintaining color consistency and stability due to high frequency switching, which consumes more energy and increases implementation costs, especially when dealing with large display areas and long-distance signal transmission.
Innovation Solution
The method involves splitting frames into areas and blocks, comparing and transmitting only the differing pixel datasets, and laminating them to form a controlling sequence for efficient LED row control, reducing the need for high-frequency updates and minimizing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high frequency switching is used for data transmission in large LED display systems, then data transmission speed is improved, but energy consumption increases and system stability deteriorates
Solution Approach 1:
The patent extracts and transmits only the differential data (changes) between frames rather than complete frame data. By identifying and transmitting only the portions of the image that have changed between the previous frame and current frame, the system reduces the volume of data requiring high-frequency transmission, thereby lowering energy consumption while maintaining adequate update speed for large LED displays
Solution Approach 2:
The patent segments the LED display into multiple scanning zones and processes data transmission in a divided manner. By splitting the large display area into smaller segments and transmitting data for only those segments that contain changes, the system reduces overall data transmission requirements and energy consumption while maintaining visual quality
2Speed
If high frequency switching is used for data transmission in large LED display systems, then data transmission speed is improved, but system stability deteriorates
Solution Approach 1:
By extracting and transmitting only differential data rather than complete frames, the patent reduces the data volume requiring high-frequency transmission. This lower-frequency transmission of reduced data volume improves signal stability and reduces transmission errors, thereby enhancing system reliability while maintaining adequate update performance
Solution Approach 2:
The patent performs preliminary processing to identify changes between frames before transmission begins. By pre-calculating which pixels or blocks have changed and preparing the differential data in advance, the system can transmit at lower frequencies with greater stability while ensuring complete and accurate data delivery
3Use of energy by stationary object
If parallel structure is used to reduce transmission frequency, then energy consumption is reduced, but wiring complexity and implementation cost increase
Solution Approach 1:
The patent changes the data representation parameters by encoding only differential information rather than complete frame data. This parameter transformation reduces the data volume requiring transmission, allowing the system to maintain lower transmission frequencies and reduced energy consumption while using the existing serial wiring infrastructure without adding parallel channels
4Manufacturing precision
If complete frame data is transmitted for each update, then display quality is maintained, but data transmission volume and energy consumption increase
Solution Approach 1:
The patent extracts only the changed portions between frames for transmission. By comparing the previous frame data with the current frame data and transmitting only the differential information, the system maintains complete display quality at the receiving end while dramatically reducing the transmission data volume and associated energy consumption
Data Source
AI summary
An LED panel controlling method is applied to control an LED panel and includes a frame splitting step, a comparing and transmitting step, a laminating step and a controlling step. In the comparing and transmitting step, a plurality of previous datasets of the previous frame are stored in a transmitting module before a plurality of current datasets of the current frames are transmitted to and stored in the transmitting module, and the current datasets are compared to the previous datasets. In the laminating step, the current datasets are laminated with the previous datasets previously stored in the receiving module to form a controlling sequence. In the controlling step, the controlling sequence is received by a driving module to drive the LED row.