Dual Backend Communication Interface for Stable Print Data Reception
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Solution Overview
Problem
The existing image forming systems face a speed reduction in print data reception processing due to shared communication interfaces, which can lead to a decrease in overall print processing speed when other interrupt processing occurs.
Innovation Solution
The implementation of a dual communication interface configuration in both the digital frontend and image forming apparatus, where the first backend communication portion and second backend communication portion each realize the physical layer in the OSI reference model, allowing for stable high-speed print data reception without interference from other data communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a shared communication interface is used for both print data reception and other data communication, then device complexity is reduced, but print processing speed decreases due to interrupt processing interference
Solution Approach 1:
The communication interface is segmented into two separate interfaces: a first communication interface for receiving print data and a second communication interface for other data communication. This segmentation allows print data reception to occur independently without interference from interrupt processing on the shared interface, thereby maintaining high print processing speed while avoiding the complexity of managing interrupts on a single interface.
2Device complexity
If a single communication interface is used, then the system structure is simplified, but reception speed becomes unstable when other interrupt processing occurs
Solution Approach 1:
The communication interface is divided into dedicated segments: the first communication interface is exclusively assigned for print data reception, ensuring stable and predictable reception speed without interference from other interrupt processing. The second communication interface handles other data communication tasks. This dedicated segmentation guarantees reliability of print data reception while maintaining reasonable system structure.
3Device complexity
If print data reception and other data communication share the same interface, then hardware resources are optimized, but CPU load increases affecting reception speed
Solution Approach 1:
The communication processing is segmented across two interfaces with dedicated CPU handling: the first communication interface for print data is handled by a first CPU, while the second communication interface for other data communication is handled by a second CPU. This segmentation prevents CPU load from other communication tasks from affecting print data reception speed, while still optimizing hardware resource utilization through specialized assignment.
Data Source
AI summary
An image forming apparatus includes a print device, a first backend communication portion, a second backend communication portion, and an inquiry management portion. The inquiry management portion transmits, when determining that transmission of a permission response is possible, the permission response to a digital frontend via the first backend communication portion. The second backend communication portion receives print data from the digital frontend. The print device executes print processing that is based on the print data when the print data is received from the digital frontend by the second backend communication portion.