Offline Subscription Data Validation in Electronic Musical Instruments
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Solution Overview
Problem
Electronic devices, such as electronic musical instruments, face challenges in using subscription-type sound data in environments without network equipment, as they cannot verify the validity of the data, leading to inappropriate usage.
Innovation Solution
An electronic device connected to a server that stores management information for each user, including a data storage means, confirmation means, permission means, lock start instruction acquisition means, and temporary permission means, allowing the device to use subscription-type data based on confirmed management information even without a network connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic device verifies subscription-type data validity with the server, then data usage reliability is improved, but the device cannot operate in environments without network equipment
Solution Approach 1:
The electronic device stores management information (validity periods, usage conditions) in advance before network connection is lost. When offline, the device uses this pre-stored information to determine whether subscription-type data can be used, enabling reliable operation without real-time server verification.
Solution Approach 2:
The management information stored in the electronic device acts as an intermediary between the server and the subscription-type data. It carries validity criteria that enable the device to autonomously verify data usability without direct server connection, bridging the gap between centralized control and offline operation.
2Adaptability or versatility
If the electronic device allows use of subscription-type data without network connection, then environmental adaptability is improved, but data usage control reliability deteriorates
Solution Approach 1:
The management information serves as an intermediary that embeds server-authorized validity criteria directly in the electronic device. This enables offline verification of subscription-type data without requiring network connection, maintaining both adaptability and control reliability simultaneously.
Solution Approach 2:
The device pre-acquires and stores management information including validity periods and usage conditions before network disconnection occurs. This preliminary action enables reliable autonomous decision-making about data usability in offline environments without sacrificing control integrity.
3Measurement precision
If the electronic device continuously checks management information with the server, then data usage control precision is improved, but loss of time occurs during network disconnection
Solution Approach 1:
The electronic device obtains and stores complete management information (validity periods, usage conditions, data identifiers) in advance while network connection is available. This preliminary acquisition eliminates the need for repeated server checks during offline periods, preventing time loss while maintaining precise control through the stored information.
Data Source
AI summary
An electronic device, a data usage method, and an electronic device program are provided. In an electronic musical instrument, in a case where a livelock flag has been turned on by an operation on a setting key by a user, a sound data is validated or invalidated according to a usable or unusable state of the sound data stored in a content state table immediately before the livelock flag has been turned on.