Peripheral Device Storage Recognition Management
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Solution Overview
Problem
Existing peripheral devices experience decreased data transfer speeds and delayed printing due to time-shared data transfer between a PC and a storage medium when accessing a printer engine via a USB bus, causing interruptions in image reading and processing.
Innovation Solution
A peripheral device with a connection portion for data transfer between an information processing device and a storage medium, including a detection and notification system that manages the recognition state of the storage medium, allowing the device to notify the PC of the storage medium's connection state during data transfer, ensuring uninterrupted data processing by managing the recognition state of connected storage media.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the PC and printer engine are connected via USB bus for direct data transfer, then printing function is achieved, but data transfer speed decreases due to time-shared access
Solution Approach 1:
The peripheral device dynamically changes the recognition state of the storage medium based on the operational state of the USB connection. When data transfer is detected, the storage medium is recognized as disconnected; when transfer completes, the recognition state is updated to connected. This dynamic state management resolves the contradiction by ensuring high-speed printing when needed while maintaining storage access capability when appropriate.
Solution Approach 2:
The invention changes the parameter of storage medium recognition state from a static condition to a dynamic one that varies with USB connection state. By altering the recognition parameter based on data transfer status, the system optimizes both printing speed and data transfer performance without compromise.
2Reliability
If the storage medium is always recognized as connected, then storage access is maintained, but data transfer to printer engine is interrupted
Solution Approach 1:
The peripheral device dynamically adjusts the storage medium recognition state according to USB data transfer status. During active printing operations, the storage is temporarily de-recognized to prevent access interruptions. After transfer completion, the recognition state is restored. This dynamic adjustment ensures printing throughput while maintaining storage accessibility when needed.
Solution Approach 2:
The system implements feedback by continuously monitoring USB data transfer status and using this information to adjust the storage medium recognition state. The detection portion monitors transfer status, and the control portion responds by changing recognition state accordingly, creating a closed-loop system that optimizes both printing performance and storage access reliability.
3Adaptability or versatility
If time-shared data transfer is used via USB bus, then connectivity between PC and peripheral device is maintained, but image reading time is extended
Solution Approach 1:
The peripheral device dynamically changes the storage medium recognition state based on USB connection status. When the USB connection is active for data transfer, the storage is de-recognized to prevent simultaneous access operations that would extend image reading time. This dynamic state management maintains connection flexibility while minimizing time loss during critical data transfer periods.
Data Source
AI summary
A peripheral device includes a connection portion which is connectable to an information processing device and a storage medium. The connection portion is configured to allow data transfer between the storage medium and the information processing device. The peripheral device further includes a function execution portion that performs a function according to data transferred from the information processing device. The peripheral device still further includes a detection portion that detects a state of the data transfer between the function execution portion and the information processing device. Moreover, the peripheral device includes a notification portion that notifies the information processing device that the storage medium is not connected to the connection portion, irrespective of whether the connection state of the storage medium to the connection portion is connected or not, when the detection portion detects a start of the data transfer between the function execution portion and the information processing device.