Print Page Complexity Detection for Selective RIP Rendering
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Solution Overview
Problem
Existing PDF optimization methods fail to address complex design or appearance-related inefficiencies in print jobs, leading to prolonged processing times and increased storage requirements for complex pages.
Innovation Solution
Implementing a page complexity detection process that determines the complexity of each page based on a weighted formula and set of rules, allowing for differential rendering of complex pages and deferring simple pages until needed, thereby optimizing processing and reducing storage requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all pages are rendered before printing starts to ensure sufficient buffer for complex pages, then the buffer size must be large enough to handle the most complex pages, but this increases storage requirements and processing time for simple pages that could be handled faster
Solution Approach 1:
The patent segments pages into complex and simple categories based on page weight calculations. Complex pages are rendered in advance and stored in the buffer, while simple pages are processed on-demand during printing. This segmentation allows the system to optimize buffer usage by only pre-rendering pages that truly require it, rather than rendering all pages uniformly.
Solution Approach 2:
The patent applies different processing qualities to different pages based on their complexity. Complex pages receive full pre-processing and buffering, while simple pages receive deferred processing. This local differentiation of processing quality allows the system to maintain reliability for complex pages while reducing overall storage and processing requirements.
2Reliability
If a large buffer is built to handle complex pages at engine speed, then processing reliability improves, but processing time increases for simple pages that could be printed immediately
Solution Approach 1:
The patent divides the print job into complex pages (requiring pre-rendering) and simple pages (eligible for on-demand processing). This segmentation enables the system to maintain consistent processing reliability for complex pages while minimizing processing time for simple pages by printing them immediately without waiting for the buffer.
Solution Approach 2:
Instead of rendering all pages in advance (excessive action), the patent renders only the necessary complex pages (partial action). This partial pre-processing approach maintains processing consistency where needed while avoiding unnecessary delays for simple pages.
3Productivity
If PDF optimization is applied to all pages to improve processing speed, then processing efficiency improves, but the system cannot resolve complexity issues inherent in certain page designs and appearances
Solution Approach 1:
The patent applies optimization selectively based on page characteristics. Pages with complex designs and appearances are identified through page weight analysis and handled with appropriate pre-processing, while simpler pages receive standard optimization. This local quality approach ensures optimization effectiveness is maintained for complex pages while achieving good processing speed overall.
Data Source
AI summary
A print job intended for subsequent printing operations includes complex and simple pages. Each page is analyzed for a page complexity determination. A base page weight related to engine speed of the print engine is compared against a page weight of the page to determine whether the page is complex. A complex page is one with a page weight equal to or greater than the base page weight. If the page is complex, then it is rendered by the RIP system and stored. If the page is simple, then it is not rendered but will be rendered when the job is printed as it can be rendered at engine speed. A complexity model and complexity rules also are used to enhance the determination process.