Semiconductor Memory Device Uniform Rewrite Frequency Access
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Solution Overview
Problem
Conventional semiconductor memory systems require a different access method for each type of semiconductor memory device to obtain rewrite frequency, making it difficult to access devices uniformly.
Innovation Solution
A semiconductor memory device with a nonvolatile memory managed by a predetermined file system, including a rewrite frequency storage unit and an identification information detection unit that reflects the rewrite frequency on a storage area corresponding to identification information, allowing for uniform access regardless of device type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different access methods are used for each type of semiconductor memory device to obtain rewrite frequency, then the rewrite frequency can be obtained, but the device complexity and difficulty of operation increase
Solution Approach 1:
The patent creates a universal access method that works across different semiconductor memory device types (SD cards, microSD cards, memory sticks, etc.). The host apparatus uses a standardized procedure to detect and access rewrite frequency information regardless of the specific device type, eliminating the need for multiple specialized access methods while maintaining reliable rewrite frequency management.
2Reliability
If device-specific access methods are implemented, then rewrite frequency can be accessed, but the system adaptability decreases
Solution Approach 1:
The invention implements a universal access protocol that adapts to different device types automatically. The host apparatus detects the presence of rewrite frequency information using a standardized method and accesses it regardless of whether the device is an SD card, microSD card, memory stick, or other semiconductor memory device, thereby improving both reliability and adaptability.
3Reliability
If multiple access methods are maintained for different device types, then each device can be accessed correctly, but the loss of time increases due to method selection
Solution Approach 1:
The patent implements a self-service mechanism where the host apparatus automatically detects and accesses rewrite frequency information using a unified method. The system eliminates the need for manual method selection or complex detection routines by employing a standardized access procedure that works across all device types, thereby reducing time loss while maintaining access accuracy.
Data Source
AI summary
A semiconductor memory device that stores information includes: a flash memory that is managed by a predetermined file system having a parameter dependent on the semiconductor memory device; a rewrite frequency storage unit that stores a rewrite frequency of the flash memory; an ID detection unit that detects whether or not first identification information associated with the rewrite frequency is stored in the flash memory as the parameter; and a control unit that, when the ID detection unit detects that the first identification information is stored, reflects the rewrite frequency stored in the rewrite frequency storage unit, on a storage area corresponding to the first identification information.