Preview Data Generation for Print RIP Bottlenecks
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Solution Overview
Problem
Existing information processing apparatuses face challenges in quickly displaying a preview of print images after changes in print settings due to the time-consuming RIP processing required for generating preview data, especially with increasing image data sizes, which affects usability, particularly in commercial printing.
Innovation Solution
An information processing apparatus and method that generates preview data with a smaller data size by performing rasterizing processing on image data and stores it for quick updates, using the preview data to update the display instead of the original image data, reducing processing load and enabling faster preview updates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If preview data is generated using RIP processing on image data to reflect print settings, then the preview accuracy is improved, but the processing time increases significantly
Solution Approach 1:
The patent segments the data processing by creating two separate data structures: full-resolution print data for accurate rendering and downsampled preview data for quick display. The preview data is generated by reducing the resolution of the original image data, allowing the system to maintain preview accuracy while significantly reducing processing time and computational resources required for preview updates.
Solution Approach 2:
The patent applies preliminary action by generating preview data in advance through downscaling the original image data before printing operations. This pre-processed preview data is stored and can be quickly updated when print settings change, eliminating the need to perform time-consuming RIP processing on the full-resolution image data each time a preview update is needed.
2Measurement precision
If full-resolution image data is used for preview generation, then the preview quality is improved, but the data size increases leading to slower processing
Solution Approach 1:
The patent applies local quality by using different data resolutions for different purposes: full-resolution image data is maintained for the actual printing process where quality is critical, while a separate downsampled preview data structure is used specifically for preview display where lower resolution is acceptable. This allows the system to optimize for speed in the preview function without compromising the quality required for printing.
3Reliability
If RIP processing is performed on large image data to generate preview data, then the preview reflects accurate print settings, but the processing load increases affecting usability
Solution Approach 1:
The patent creates a simplified copy of the image data structure specifically for preview purposes. Instead of performing complex RIP processing on the original large image data, the system generates a downsampled copy that maintains the essential visual information and can be quickly processed to reflect print setting changes. This copying approach preserves preview accuracy while dramatically reducing processing load and improving responsiveness.
Data Source
AI summary
An information processing apparatus includes a processing section that generates, based on image data, print data obtained by performing RIP processing on the image data and preview data smaller in data size than the print data, and a storage section that stores the preview data, in which when an update of a preview of a print image based on the print data is accepted, the processing section updates data used for the preview by using the preview data read from the storage section.