Display Panel Wireless Data Transmission via Coupling Signal
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Solution Overview
Problem
Existing data transmission systems in consumer electronic devices lack a robust architecture for simultaneously processing and transmitting display data and additional data wirelessly, limiting their application in areas like access control and advertising.
Innovation Solution
A data transmission system comprising a visual interface device with a display panel and a control unit that couples a signal containing display and transmission data to an operation device, using electrodes for wireless communication, where the operation device retrieves the transmission data via an extracting unit, utilizing tags to differentiate and retrieve the data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If display data and transmission data are processed simultaneously through the same display panel electrodes, then wireless data transmission capability is added to the visual interface device, but signal interference and data retrieval accuracy deteriorate
Solution Approach 1:
The patent segments the coupling signal into distinct components by inserting synchronization tags at specific positions (e.g., between scan lines or within data streams). These tags act as delimiters that allow the operation device to distinguish and separate transmission data from display data, enabling reliable data retrieval even when both are transmitted simultaneously through the same electrodes.
Solution Approach 2:
The patent applies different signal characteristics to different data types within the same transmission medium. Display data maintains its original scan line structure and voltage levels, while transmission data is modulated with distinct tags that have unique electrical characteristics (such as specific voltage patterns or timing sequences). This local differentiation allows the receiving device to identify and extract transmission data without interfering with display functionality.
2Measurement precision
If tags are inserted into display data to differentiate transmission data, then data retrieval accuracy improves, but display data processing complexity and time increase
Solution Approach 1:
The patent implements a periodic tagging scheme where synchronization tags are inserted at regular intervals (e.g., at the beginning of each frame or at fixed positions between scan lines). This periodic structure allows the operation device to predict and efficiently locate transmission data without requiring complex real-time analysis of every data bit, thereby maintaining relatively simple processing while achieving high retrieval accuracy.
3Device complexity
If the operation device retrieves transmission data during normal display operation, then wireless communication functionality is achieved without additional hardware, but the coupling signal strength and data transmission reliability worsen
Solution Approach 1:
The patent uses synchronization tags as intermediary markers that facilitate the extraction of transmission data from the coupling signal. These tags serve as reference points that help the operation device synchronize its data retrieval process with the display panel's scanning operation, improving the reliability of data transmission without requiring additional dedicated communication hardware.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the visual interface device to display images and transmit data wirelessly to other devices, expanding the functionality of electronic devices by allowing simultaneous data processing and transmission, reducing interference through spatial separation and modulation techniques.
Implementation Method 1
a coupling signal containing display data DD and transmission data TD is coupled to the operation device 1 from an electrode of the display panel 21
Data Source
AI summary
A data transmission system includes a visual interface device and an operation device. The visual interface device includes a display panel and a control unit. The control unit receives display data and transmission data, and transmits the display data and the transmission data to the display panel. The operation device includes a capturing unit. A coupling signal containing the display data and the transmission data is coupled from an electrode of the display panel to the operation device when the visual interface unit is in operation, and the operation device utilizes the capturing unit to retrieve the transmission signal from the coupling signal.