Print File Preprocessing for Faster Bitmap Generation
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Solution Overview
Problem
Poorly structured or complex print job files cause print systems to pause due to insufficient data processing speed, leading to undesired delays in print output.
Innovation Solution
A print file preprocessing mechanism that generates print job structure metadata by traversing and analyzing print job files to identify page elements and their properties, allowing for efficient processing and reducing the need for extensive rasterization traversal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the print controller processes complex print job files directly without preprocessing, then the processing accuracy and completeness of page elements are maintained, but the processing speed decreases causing print output pauses
Solution Approach 1:
The patent applies preliminary action by performing file preprocessing before the main print processing. The preprocessing step analyzes the print job file structure, generates metadata about page elements (text, images, graphics), and creates a processing roadmap. This advance preparation enables the print controller to efficiently process the actual print data without delays, as the complex file structure has already been analyzed and organized into actionable metadata that guides subsequent processing steps.
2Manufacturing precision
If extensive rasterization traversal is performed on complex print job files, then complete page image data is generated, but the processing time increases causing print speed reduction
Solution Approach 1:
The patent applies the extraction principle by separating the file structure analysis from the actual rasterization process. The preprocessing step extracts metadata about page elements (text regions, image locations, graphic boundaries) without performing complete rasterization. This extracted metadata is then used to guide the rasterization process, allowing the system to focus computational resources only on the actual image generation rather than traversing and analyzing every element during rasterization, thus improving both accuracy and speed.
3Measurement precision
If the print controller analyzes every page element in complex print job files, then accurate page element identification is achieved, but the data processing load increases causing print pauses
Solution Approach 1:
The preprocessing step performs preliminary analysis of page elements, identifying text, images, graphics, and their spatial relationships before the main print processing. This advance identification creates a structured metadata representation that the print controller can use during actual processing, maintaining accurate element identification while reducing the real-time processing complexity during print execution.
Solution Approach 2:
The patent creates a metadata copy or representation of the print job file structure that captures essential page element information without duplicating the entire file. This metadata copy contains simplified representations of page elements (boundaries, types, positions) that can be processed efficiently during printing while maintaining accurate element identification, thus reducing processing complexity without sacrificing precision.
Data Source
AI summary
A system is disclosed. The system includes one or more processors to receive a print job file including page content data associated with each page of the print job file, receive print job structure metadata and process the print job file using the print job structure metadata to generate page image data for the page content data, wherein the print job structure metadata comprises page element metadata associated with each of a plurality of pages of the page content data.