Information Recording Device External Storage Flag Management
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Solution Overview
Problem
Digital recording and playback devices face limited recording capacity due to reliance on local media, which is severely constrained in portable devices where communication with external servers may not always be possible.
Innovation Solution
The device sends data to an external recording device, adds a flag to indicate overwritable data, and manages local media to expand recording capacity by utilizing communication when available and optimizing data storage and overwrite priorities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If data is stored only on local medium, then device can operate independently without communication, but recording capacity is severely limited by local medium capacity
Solution Approach 1:
The system divides the recording capacity into two segments: local medium storage and external server storage. The portable device segments its data management functions, storing frequently accessed or important data locally while offloading less critical or archived data to the external server, thereby expanding total recording capacity without sacrificing operational independence.
Solution Approach 2:
The patent introduces a communication interface as an intermediary between the local medium and external server. This intermediary enables flexible data transfer and management, allowing the device to dynamically utilize external storage capacity while maintaining the ability to operate independently when communication is unavailable.
2Quantity of substance
If communication with external device is not possible, then operational independence is maintained, but recording capacity remains limited
Solution Approach 1:
The system performs preliminary actions by pre-transferring data to the external server when communication is available. This proactive data offloading ensures that recording capacity is expanded in advance, and the device can maintain expanded storage utilization even when subsequent communication attempts fail due to reliability issues.
Solution Approach 2:
The patent dynamically changes the operational parameters of data storage based on communication status. When communication is reliable, the system transitions to utilizing external storage capacity; when communication reliability deteriorates, it automatically adjusts to rely more on local storage, thereby adapting recording capacity utilization to communication conditions.
3Quantity of substance
If local medium capacity is increased, then recording capacity is improved, but device size and portability are compromised
Solution Approach 1:
The patent extracts the storage function from the portable device itself and relocates it to an external server. By taking out the bulk storage capacity requirement from the device, the system achieves expanded recording capacity without increasing device volume, maintaining portability while overcoming the local medium capacity limitation.
4Productivity
If data is made overwritable, then recording capacity utilization is improved, but data loss risk increases
Solution Approach 1:
The system implements feedback mechanisms through flag management, where data status (overwritable or protected) is continuously monitored and adjusted based on communication status and storage utilization. This feedback control allows the system to dynamically designate certain data as overwritable when external storage is available, improving recording efficiency while preventing data loss by protecting critical data through flag-based identification.
Data Source
AI summary
An information recording device includes an input unit entering input data, a transmission unit sending the data entered by the input unit, a reception unit receiving information data, a received data management unit adding a flag indicating the received information data to the information data received by the reception unit, a recording unit recording the information data received by the reception unit and the flag, and a control unit controlling the information data recorded by the recording unit to be changed to overwritable data in accordance with the flag recorded by the recording unit, thereby adding a flag to received data and performing a control to set the data attached with the flag to overwritable data.