CF Interface Security Device Merging Flash and Control
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Solution Overview
Problem
Information security devices without a flash module limit their functionality and compatibility, restricting their application scope.
Innovation Solution
An information security device with a Compact Flash (CF) interface is enhanced by adding an information security chip, enabling it to perform read/write operations and security operations through a CF interface, using a card reading apparatus to differentiate between flash module and security chip operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an information security device adds a flash module and CF interface to extend functionality, then adaptability and versatility improve, but device complexity increases
Solution Approach 1:
The patent combines the information security chip and flash module into a single integrated device with a unified CF interface. The control module acts as an intermediary that routes operations to either the security chip or flash module based on the operation type, merging multiple functions into one device while maintaining manageable complexity through centralized control.
Solution Approach 2:
The information security device is designed with multi-functionality by incorporating both security operations (encryption, decryption, authentication) and storage operations (read, write) through a single CF interface. The control module enables the device to universally handle different operation types without requiring separate dedicated devices.
2Ease of operation
If the device integrates both flash module and information security chip operations through a single CF interface, then ease of operation improves, but difficulty of detecting and measuring increases
Solution Approach 1:
The control module serves as an intermediary between the CF interface and the security chip/flash module. It receives operations through the unified CF interface, identifies the operation type, and routes it to the appropriate module. This intermediary layer simplifies user interaction while managing the complexity of operation detection and routing internally.
Solution Approach 2:
The device segments operations into distinct types (security operations vs. storage operations) and handles them through different internal paths. The control module detects operation types by analyzing operation characteristics and routes them accordingly, separating the detection and handling of different operation kinds to manage complexity.
Data Source
AI summary
System and method for an information security device with a compact flash (CF) interface are disclosed. The information security device determines an object being operated according to an instruction sent by a host using a card reading apparatus, and performs a flash memory operation or an information security operation. The determining by the information security device of the object being operated by the host includes the control chip of the information security device determining whether the object being operated by the host with the card reading apparatus is a real section or a virtual section inside the device, wherein the real section refers to the section in the flash module of the information security device, and the virtual section is predefined in the information security chip in the information security device.