IC Card Power Controller for Periodic Security Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Integrated circuit cards face challenges in minimizing power consumption during communication and non-communication intervals, leading to unstable power supply and increased energy usage, which affects their operational stability and security detection capabilities.
Innovation Solution
A power controller is implemented to selectively and periodically apply power to different circuit blocks, including a security detection circuit, during communication and non-communication intervals, minimizing unnecessary power consumption by enabling detectors sequentially and placing non-essential blocks in a standby state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power is continuously supplied to all circuit blocks including security detection circuits, then security detection capability is maintained, but power consumption increases
Solution Approach 1:
The power controller supplies power to the security detection circuit periodically rather than continuously. During communication intervals when the card is actively transmitting data, power is supplied to maintain security detection. During pause intervals when no communication occurs, power supply is halted to reduce consumption. This periodic power supply maintains necessary security monitoring while significantly reducing overall power usage.
Solution Approach 2:
The system dynamically adjusts the power supply state of the security detection circuit based on the communication status. The power controller monitors whether the card is in a communication interval or pause interval and accordingly switches the power supply state between active and standby, optimizing the balance between security detection capability and power consumption.
2Reliability
If power is supplied during communication intervals, then operational stability is maintained, but power consumption increases during non-communication intervals
Solution Approach 1:
The power controller implements periodic power supply synchronized with communication intervals. Power is supplied during active communication when operational stability is needed, and power supply is interrupted during pause intervals when no communication occurs. This approach maintains operational stability during necessary periods while eliminating unnecessary power consumption during idle periods.
3Reliability
If all detectors in the security detection circuit are activated simultaneously, then comprehensive security monitoring is achieved, but power consumption increases by factor of N
Solution Approach 1:
The power controller activates detectors sequentially rather than simultaneously, and only during communication intervals. During pause intervals, all detectors remain powered down. This sequential and periodic activation ensures that comprehensive security monitoring is available when needed while reducing power consumption by a factor of N during idle periods, where N is the number of detectors.
Solution Approach 2:
The security detection circuit is divided into multiple independent detectors that can be controlled separately. The power controller manages each detector individually, enabling selective activation based on communication status. This segmentation allows the system to activate only the necessary number of detectors at any given time rather than all detectors simultaneously, reducing power consumption while maintaining security coverage.
Data Source
AI summary
An integrated circuit card includes an interface block for performing an interface function with the external devices and a power controller for controlling power of a security integrated circuit for detecting if an operational environment is in an abnormal state, the power controller periodically and selectively applies power to the security integrated circuit. Thus, power consumption is reduced in the integrated circuit card; and a stable operation of the integrated circuit card which contactlessly communicates with the external devices can be secured with an extended communication distance.