Dynamic Memory Backup Strategy for Multifunction Peripheral Battery Conservation
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Solution Overview
Problem
In multifunction peripherals, the increased memory capacity requires larger backup batteries due to the need to retain image data for facsimile functions, but this limits the available memory for image processing, as the work area for program execution must be in basic memory, reducing the capacity for facsimile memory even with extended memory installed.
Innovation Solution
The solution involves a memory control unit that copies target data from the first memory to the second memory when the second memory is installed, allowing the first memory to be released, and sets the second memory for backup when it is present, and the first memory when it is not, thereby limiting the backed-up area and conserving battery capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If extended memory is installed to increase memory capacity, then the available memory for image processing is improved, but the battery capacity must be increased to maintain backup time, which increases device complexity and cost
Solution Approach 1:
The patent implements dynamic memory backup strategy where the backup target memory is determined based on the installation status of extended memory. When extended memory is installed, only the first memory is backed up; when not installed, the second memory is backed up. This dynamic adjustment allows the system to adapt backup scope to actual memory configuration, avoiding unnecessary battery capacity increase while maintaining adequate backup time.
Solution Approach 2:
The patent changes the backup scope parameter based on memory installation status. The backup control unit modifies which memory (first or second) is selected for backup according to whether extended memory is installed. This parameter change enables the system to maintain appropriate backup capacity without requiring larger batteries when extended memory is present.
2Reliability
If the work area for program execution is placed in basic memory, then program execution is ensured, but the available memory area for facsimile functions is reduced
Solution Approach 1:
The patent segments the memory into distinct first memory and second memory areas with different backup requirements. The first memory contains both work area and facsimile memory, while the second memory contains only facsimile memory. This segmentation allows the system to backup only the first memory when extended memory is installed, preserving work area reliability while maintaining facsimile memory capacity.
Solution Approach 2:
The patent applies partial backup action by selectively backing up only the first memory when extended memory is installed, rather than backing up all memory areas. This partial action reduces battery power consumption and allows the work area to be maintained in the first memory without compromising facsimile memory availability in the second memory.
3Reliability
If all memory areas are backed up to ensure data retention, then data safety is improved, but the battery power consumption increases and backup time is reduced
Solution Approach 1:
The patent extracts the facsimile memory from the backup scope when extended memory is installed. By taking out the second memory (containing facsimile memory) from the backup operation, the system reduces battery power consumption and extends backup time for the first memory while maintaining data retention for critical work area data.
Solution Approach 2:
The patent implements partial backup by selectively backing up only the first memory when extended memory is present. This partial action reduces the total memory capacity requiring backup, thereby extending battery backup time while maintaining adequate data retention for essential operations.
Data Source
AI summary
Disclosed is an information processing apparatus having a first memory and being capable of installing a second memory. The apparatus moves target data to be backed up stored in the first memory into the second memory, in a case that the second memory is installed in the information processing apparatus, and releases an memory area of the first memory in which the target data was stored, and sets the second memory to be backed up in a case that the second memory is installed in the information processing apparatus, and sets the first memory to be backed up in a case that the second memory is not installed in the information processing apparatus.