Imaging Device Memory Area Segmentation for Data Relocation
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Solution Overview
Problem
The repeated rewriting of data in the internal memory of imaging devices can lead to memory deterioration, risking the permanent loss of important information.
Innovation Solution
The implementation of a digital video camera with an internal memory management system that includes a controller to distribute and update device information across non-defective areas, utilizing a flash memory configuration with separate areas for device information and demo data, allowing for the preservation of important information by relocating data within the internal memory based on available capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data is repeatedly rewritten in the same internal memory area, then data update capability is improved, but memory reliability deteriorates due to deterioration of the internal memory
Solution Approach 1:
The internal memory is divided into multiple areas (first area for device information, second area for other information including demo data). The controller manages these segmented areas separately, allowing data to be rewritten in different areas rather than repeatedly in the same area, thus improving reliability while maintaining update capability.
Solution Approach 2:
The system recovers memory reliability by moving data between different memory areas. When one area becomes defective from repeated rewriting, the controller can relocate the data to another area, effectively recovering the memory's useful life and preventing permanent data loss.
2Loss of information
If device information is stored in a fixed memory area, then data integrity is improved, but memory lifespan deteriorates due to repeated rewriting in the same area
Solution Approach 1:
The system implements dynamic memory management where the controller can move device information between different memory areas based on the status and capacity of each area. This dynamic approach prevents fixed-area deterioration while maintaining data integrity through controlled relocation to healthy areas.
Solution Approach 2:
The controller proactively monitors memory area status and performs data relocation before complete deterioration occurs. By anticipating memory degradation and moving data in advance, the system preserves both data integrity and extends overall memory lifespan.
3Adaptability or versatility
If the internal memory is divided into separate areas for device information and demo data, then data management flexibility is improved, but device complexity increases
Solution Approach 1:
The internal memory is segmented into distinct areas (first area for device information, second area for other information). This segmentation provides clear organizational structure that improves data management flexibility while the controller manages the complexity through systematic area identification and management rules.
Data Source
AI summary
An imaging device is provided with an internal memory and a controller. The internal memory includes a first area configured to hold device information about the imaging device and a second area configured to hold other information which can include demo data. At least one of the areas within the first area is capable of being defective. The controller is coupled to the internal memory to operate the internal memory to hold and move updated device information within the first area and/or within the second area according to the size of the non-defective areas within the first area.