Decompression Correction Unit for Printing Apparatus
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Solution Overview
Problem
Existing printer technologies face issues with unintended pixel values being reproduced during decompression, leading to wasteful consumption of printing materials and decreased throughput due to incorrect bit settings in color space conversion processes.
Innovation Solution
A processing apparatus and method that decompresses compressed data and corrects the output values to ensure they align with specific values handled by the processing unit, preventing unnecessary printing operations by adjusting pixel values to their intended states, such as white or black, through correction units within the decompressor or print system image processing units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of bits for image data calculation is set larger than the original number of bits to prevent error accumulation, then decompression accuracy is improved, but unintended pixel values are reproduced causing wasteful printing material consumption and decreased throughput
Solution Approach 1:
The patent applies preliminary action by performing correction processing immediately after decompression calculation. The correction unit adjusts pixel values before they are output to the printing system, preventing unintended pixel values from causing wasteful printing operations. This proactive correction resolves the contradiction by maintaining high decompression accuracy while avoiding the productivity loss that would result from reprocessing or wasted printing material.
2Measurement precision
If the number of bits for image data calculation is set larger than the original number of bits, then decompression accuracy is improved, but unintended pixel values are reproduced leading to wasteful consumption of recording material
Solution Approach 1:
The correction unit performs preliminary adjustment of pixel values immediately after decompression, preventing unintended pixel values from reaching the printing system. This ensures that recording material is not wasted on printing areas that should be white or black, while maintaining the high decompression accuracy achieved through increased bit depth calculation.
3Productivity
If correction processing is performed to adjust pixel values to specific values, then printing efficiency is improved, but additional processing steps are required
Solution Approach 1:
The patent merges the correction processing function into the existing decompression processing unit. The correction unit is integrated with the decompression calculation, allowing pixel value adjustment to be performed as part of the standard decompression workflow. This integration achieves printing efficiency improvements without significantly increasing overall system complexity, as the correction is embedded within the existing processing architecture.
Data Source
AI summary
A processing apparatus which decompresses compressed data and outputs the decompressed data to a processing unit configured to perform conversion processing of converting the decompressed data into data for printing; the apparatus comprises: an input unit configured to input the compressed data; a calculation unit configured to perform calculation for decompressing the compressed data input by the input unit; and a correction unit configured to correct data generated by the calculation unit such that a value of the data becomes a specific value handled by the processing unit.