Display Device Input Circuit Multiplexing Switch Debugging
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Solution Overview
Problem
Existing display device SOC systems require multiple debugging sockets for different functions, making it inconvenient to debug or manufacture, as these sockets cannot be modified after assembly and require disassembly for use.
Innovation Solution
A display device input circuit that includes an input interface with debugging, data, and control signal terminals, a control circuit that generates channel selection signals, a multiplexing switch circuit that controls output channels, and a driving circuit board that receives communication signals, allowing for different functions to be realized without additional sockets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple debugging sockets are added to the SOC system for different functions, then the system can support multiple debugging functions, but the device complexity increases and the ease of operation deteriorates due to the need for physical disassembly
Solution Approach 1:
The patent implements a multiplexing switch circuit that allows a single physical interface to perform multiple debugging functions (UART, I2C, SPI, etc.) by dynamically switching between different communication protocols and signal configurations. This eliminates the need for multiple separate debugging sockets, reducing device complexity while maintaining versatility.
Solution Approach 2:
The system dynamically reconfigures the debugging interface by detecting the required communication protocol and automatically switching the multiplexing circuit to the appropriate mode. This dynamic adaptation allows a single static physical interface to provide multiple debugging functions without requiring physical disassembly or reconfiguration.
2Adaptability or versatility
If multiple debugging sockets are equipped on the board during manufacturing, then different debugging functions can be supported, but the ease of manufacture deteriorates due to the inability to modify after assembly
Solution Approach 1:
By designing a universal debugging interface that can adapt to multiple communication protocols through software control and circuit switching, the system eliminates the need to pre-configure multiple physical sockets during manufacturing. The single interface can be reprogrammed and reconfigured for different debugging functions as needed, greatly improving manufacturing flexibility.
Solution Approach 2:
The multiplexing switch circuit is pre-configured with multiple output channels corresponding to different communication protocols, but the actual function assignment is determined later through control signals. This allows the hardware to be prepared in advance while the specific debugging function can be selected and configured after assembly, enabling post-manufacturing flexibility.
3Adaptability or versatility
If multiple serial ports are provided for different debugging functions, then function versatility is improved, but the ease of operation worsens due to the need for disassembly to access sockets
Solution Approach 1:
The patent merges multiple debugging functions into a single integrated interface by combining multiple communication protocols (UART, I2C, SPI, etc.) through a multiplexing switch circuit. This consolidation allows all debugging operations to be accessed through one physical interface, eliminating the need for disassembly while maintaining support for diverse debugging functions.
Solution Approach 2:
The unified debugging interface provides universal access to multiple communication protocols and debugging functions through a single socket. The multiplexing circuit dynamically routes different protocols to the same physical interface, allowing users to access any debugging function without physical disassembly, thereby dramatically improving ease of operation.
Data Source
AI summary
A display device input circuit includes: an input interface; a control circuit, where the control circuit is configured to generate a channel selection signal according to a debugging signal from the debugging terminal; a multiplexing switch circuit, where the multiplexing switch circuit includes multiple groups of output channels, and the multiplexing switch circuit is configured to control one group of output channels of the multiple groups of output channels to output a communication signal according to a channel selection signal from the control circuit; and a driving circuit board, where a data input terminal of the driving circuit board is connected to the data terminal, the driving circuit board is further connected to the multiple groups of output channels to obtain the communication signal, and an output terminal of the driving circuit board is connected to a display panel.