Printing Apparatus Reusable Data Caching Strategy
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Solution Overview
Problem
Existing variable printing technologies face challenges in efficiently managing and storing reusable data due to finite storage capacity and inefficient memory optimization, particularly in handling recurring and non-recurring elements during the page composition process.
Innovation Solution
A printing apparatus and method that extracts and manages reusable data by generating intermediate and image data, prioritizing storage based on reuse frequency and type, and optimizing memory usage by caching reusable objects in a rasterized form, while converting non-reusable objects on the fly, to enhance storage efficiency and reduce memory depletion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If reusable data is cached in rasterized form to improve printing efficiency, then print processing time is reduced, but storage capacity is depleted
Solution Approach 1:
The patent applies local quality by differentiating storage strategies for different types of data. Frequently reused objects are cached in rasterized form in memory for quick access, while less frequently reused objects are stored in uncompressed form or on disk. This selective approach optimizes both processing speed and memory utilization by allocating storage resources according to actual usage patterns.
Solution Approach 2:
The system dynamically changes storage parameters based on reuse frequency. Objects are monitored for reuse patterns, and when an object exceeds a certain reuse threshold, its storage format is changed from uncompressed to rasterized cache. This parameter change allows the system to adapt storage allocation to actual workload characteristics, resolving the contradiction between speed and storage capacity.
2Reliability
If all reusable data is stored in memory to prevent memory depletion, then storage efficiency is improved, but device complexity increases
Solution Approach 1:
The system implements self-service through automatic cache management. The memory management unit continuously monitors object reuse patterns and automatically makes decisions about what to cache and what to discard, without requiring manual intervention or complex external control systems. This self-managing approach maintains reliability while keeping the control logic relatively simple.
Solution Approach 2:
The caching strategy is dynamic rather than static. The system continuously adapts to changing workload patterns by monitoring reuse frequencies and adjusting cache contents accordingly. This dynamic behavior allows the system to maintain efficient memory utilization across varying workloads without requiring complex predetermined management strategies.
3Quantity of substance
If non-reusable objects are converted on the fly to reduce storage usage, then storage capacity is preserved, but print processing time increases
Solution Approach 1:
The system performs preliminary action by pre-caching frequently reused objects in rasterized form before they are actually needed for printing. This advance preparation eliminates the need for time-consuming on-the-fly conversion during the printing process, thus resolving the contradiction between storage efficiency and processing speed.
Data Source
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AI summary
A printing apparatus according to the present invention comprises a generation means configured to generate intermediate data based on a print job containing at least one or more reusable data and variable data for each of the reusable data, a conversion means configured to convert the intermediate data generated by the generation means into image data, and a storage means configured to select at least one of the intermediate data of the reusable data and the image data of the reusable data according to a range in which the reusable data is reused, and store the selected data as a cache.