Dual-Interface Smart Chip for Terminal and Card Communication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current smart chips with a single communication interface are inadequate for handling multiple communication interfaces, leading to inefficient data processing and resource wastage when coordinating data transmission and reception across multiple interfaces, limiting their communication extensibility and resource utilization.
Innovation Solution
A smart chip with at least two communication interfaces, where one interface handles data communication with a terminal and another with smart cards, allowing for simultaneous processing and transmission of APDU operation commands and results, thereby improving resource utilization and communication extensibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a smart card uses multiple smart chips with multiple communication interfaces, then the communication functionality and versatility are improved, but the processing complexity and resource consumption increase due to needing to coordinate multiple interfaces
Solution Approach 1:
The patent combines multiple communication interfaces (first communication interface for terminal communication, second communication interface for smart card communication) into a single smart chip. This merging allows the chip to handle multiple communication protocols and interfaces simultaneously without requiring separate chips for each interface, thereby reducing overall system complexity while maintaining versatility.
Solution Approach 2:
The smart chip is designed with multi-functional capability to handle different communication protocols through a single device. The processing unit can interpret and manage multiple communication interfaces (such as 7816 interface and other smart card interfaces) within one chip, making the chip universal and adaptable to various communication scenarios without increasing processing flows.
2Adaptability or versatility
If a smart card coordinates processing between multiple communication interfaces, then communication functionality is achieved, but processing time and resource utilization are reduced
Solution Approach 1:
By merging multiple communication interface handling capabilities into a single smart chip with a unified processing unit, the patent eliminates the need for coordination between multiple separate chips. The processing unit directly manages both the first communication interface (for terminal communication) and the second communication interface (for smart card communication) simultaneously, thereby improving processing efficiency while maintaining full communication functionality.
3Adaptability or versatility
If a smart card uses multiple smart chips for different communication interfaces, then communication versatility is improved, but resource utilization of smart chips is reduced
Solution Approach 1:
The patent creates a universal smart chip that can handle multiple communication protocols and interfaces within a single device. The processing unit is designed to manage different communication modes (terminal communication via first interface, smart card communication via second interface) without requiring separate dedicated chips for each function. This multi-functionality ensures high resource utilization as the single chip's resources are fully employed across different communication tasks rather than being distributed across multiple underutilized chips.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Disclosed are a smart chip and a method for smart card data communications, for use in improving resource utilization rate of the smart chip. The smart chip comprises at least two communication interfaces. The data communication method comprises: the smart chip receiving via a first communication interface an application protocol data unit (APDU) operation command transmitted by a terminal; upon determining the APDU operation command is a processing command for the smart chip, processing correspondingly, and returning a first processing result to the terminal via the first communication interface; otherwise, transmitting via a second communication interface the APDU operation command to a smart card connected to the second communication interface, and returning via the first communication interface, a second processing result returned via the second communication interface by the smart card to the terminal.