Digital Piano Remote Storage Controller
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Solution Overview
Problem
Digital pianos have complex graphical interfaces that require users to interrupt their playing to adjust parameters, and local music recording is vulnerable to technical failures or deterioration, risking loss of stored music.
Innovation Solution
A digital piano with a controller that switches between live playing and playback modes, allowing music to be recorded and stored in both local and remote memory, enabling deferred playback and remote access through a mobile terminal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If music is recorded locally in the digital piano, then playback is fast and accessible, but data integrity is threatened by technical failure or deterioration
Solution Approach 1:
A remote storage server acts as an intermediary between the digital piano and the ultimate storage destination. The server receives playback files from the piano via network communication, stores them securely, and can transmit them back when needed. This intermediary system protects against local storage failures while maintaining accessibility through the playback mode.
Solution Approach 2:
The storage system is divided into two distinct locations with different characteristics: local storage for fast access during playback mode, and remote storage for secure long-term preservation. Each storage location serves its specific purpose optimally, with the local portion providing speed and the remote portion providing reliability.
2Ease of operation
If a graphical interface with screen and buttons is provided, then user control of functions is enabled, but operation complexity increases and requires interrupting playing
Solution Approach 1:
The system automatically records music playback without requiring user intervention. When the piano detects that music is being played, it autonomously captures the audio signal, processes it into a playback file, and stores it in both local and remote storage. This eliminates the need for users to manually operate controls during performance.
Solution Approach 2:
The system performs the recording action in advance, during the live playing mode itself. By capturing and storing the playback file while the music is being performed, the system prepares the recorded content ahead of time, so that later playback can occur without requiring any additional user action or interruption of subsequent performances.
3Reliability
If remote storage is used for music playback files, then data preservation is improved, but access speed may be reduced
Solution Approach 1:
The storage system is segmented into local and remote portions. The local storage portion provides fast access for immediate playback needs, while the remote storage portion provides secure long-term preservation. The system can intelligently determine which portion to access based on the specific playback request and current conditions.
Solution Approach 2:
The system merges local and remote storage into a unified storage architecture. Both storage locations work together as part of the same system, with the controller able to retrieve files from either location and transfer them as needed. This combination provides both the speed of local storage and the reliability of remote storage.
Data Source
AI summary
A digital piano includes a keyboard, a speaker, a controller and a memory. The controller can control the digital piano in a live playing mode and in a deferred playing mode. In the live playing mode, the controller controls the speaker using a digital signal generated from a music playing signal from the keyboard, generates a deferred playing file from the music playing signal, and stores the deferred playing file in a remote storage portion of the memory. In the deferred playing mode, the controller receives a deferred playing file identifier, recovers the associated deferred playing file from the memory, and controls the speaker using a digital signal generated from the associated deferred playing file.