Multi-Mode Interface Circuit with Format Detection
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Solution Overview
Problem
Existing electronic systems require multiple product versions to accommodate different interface types, leading to increased costs and reduced flexibility, as each interface type has distinct hardware designs and protocols, making it difficult to adapt to changing interface requirements or customer needs.
Innovation Solution
A multi-mode communication interface that detects the data communication format of connected devices, enabling either serial or parallel communication formats using a single product design, with a detection circuit that monitors impedance, voltage, or frequency to selectively enable appropriate receiver circuits, such as MIPI, SPI, or GPIO protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple product versions are provided to accommodate different interface types, then interface compatibility is improved, but manufacturing cost and device complexity increase
Solution Approach 1:
The interface circuit is designed to support multiple communication formats (serial and parallel) within a single product. The circuit includes both a serial interface circuit and a parallel interface circuit that can be selectively activated based on the detected communication format, eliminating the need for multiple product versions while maintaining interface compatibility across different applications
Solution Approach 2:
The interface circuit dynamically switches between serial and parallel communication modes based on real-time detection of the communication format. The format detection circuit identifies whether the connected device uses serial or parallel communication, and the interface circuit accordingly enables the appropriate receiver circuit, allowing the same hardware to adapt to different interface requirements without manual configuration
2Adaptability or versatility
If multiple product versions are provided for different interface types, then interface compatibility is improved, but inventory management complexity and cost increase
Solution Approach 1:
By designing a universal interface circuit that supports both serial and parallel communication formats in a single product, the invention eliminates the need to manufacture and manage multiple product versions. The format detection circuit automatically identifies the communication protocol being used, and the interface circuit accordingly activates the appropriate receiver, simplifying inventory management to a single product SKU while maintaining broad interface compatibility
3Reliability
If hardware is designed with a specific interface type, then interface performance is optimized, but future adaptability and reconfigurability are reduced
Solution Approach 1:
The interface circuit employs dynamic mode switching capability where both serial and parallel receiver circuits are present in the hardware but selectively activated based on real-time detection of the communication format. This allows the circuit to maintain optimized performance for the detected mode while preserving the ability to adapt to different interface types in the future without hardware changes
Solution Approach 2:
The format detection circuit performs preliminary detection of the communication format before data transmission begins. Based on this early detection, the interface circuit pre-configures the appropriate receiver circuit (serial or parallel) to be active, ensuring optimal performance from the start of communication while maintaining the flexibility to handle different interface types
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
This approach reduces inventory and development costs by allowing a single product to support multiple interface standards, providing flexibility to switch between communication formats as needed, without increasing the size or power consumption of the device.
Implementation Method 1
The interface detection circuit is configured to detect an impedance or a voltage on at least one of the plurality of terminals
Implementation Method 2
The interface detection circuit is configured to detect an impedance or a voltage on at least one of the plurality of terminals
Implementation Method 3
The interface detection circuit is configured to detect a frequency on at least one of the plurality of terminals
Data Source
AI summary
A communication interface circuit includes a plurality of terminals, two receiver circuits, and a detection circuit. The detection circuit is coupled to at least one of the terminals and detects a communication format, and the detection circuit enables one of the two receiver circuits based on the detected communication format.