Mobile Audio Playback Control via Touch Gesture Direction
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Solution Overview
Problem
Mobile terminals face limitations in screen size, leading to reduced operability and visibility when performing DJ preparation work, which requires complex music data manipulation and playback settings.
Innovation Solution
An audio device with a mobile terminal configuration, including a playback unit, display, touch panel, and playback controller, that allows users to set playback positions and settings based on touch panel interactions, enabling intuitive control of music data playback on a smartphone or tablet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the amount of information displayed on the mobile terminal screen is reduced to accommodate screen size limitations, then the device can be used portably, but visibility and operability deteriorate
Solution Approach 1:
The patent transitions from 2D screen display to 3D spatial interaction by detecting the direction of contact position change on the touch panel. This allows the system to interpret swipe gestures in different directions (up, down, left, right) as distinct playback control commands, effectively adding a dimensional aspect to the interaction that enables complex operations without requiring more screen real estate.
Solution Approach 2:
The patent changes the parameter of interaction from static button presses to dynamic gesture direction detection. By detecting the direction of contact position change (dx, dy values) on the touch panel, the system distinguishes between different playback settings (backward skip, forward skip, rewind, fast forward) based on the directional parameter of the user's swipe gesture, enabling multiple functions from a single operation element.
2Adaptability or versatility
If the size of operation elements is reduced to fit more controls on the mobile screen, then more functions are accessible, but visibility and ease of operation worsen
Solution Approach 1:
The patent makes a single operation element (the touch panel display area) universal by detecting the direction of contact position change. The same touch area can perform multiple playback functions (backward skip, forward skip, rewind, fast forward) depending on the direction of the user's swipe gesture, eliminating the need for multiple separate buttons and maintaining ease of operation while providing versatile functionality.
Solution Approach 2:
The patent introduces dynamic gesture recognition where the function of the operation element changes based on the direction and magnitude of the user's swipe. The playback controller decides different playback settings dynamically based on the detected contact position change direction, allowing a single static operation element to provide multiple dynamic functions.
3Adaptability or versatility
If complex playback settings are implemented on a mobile terminal, then functionality matches desktop systems, but the device becomes harder to operate due to screen size constraints
Solution Approach 1:
The patent extracts the complexity of multiple playback control functions from traditional multi-button interfaces and consolidates them into a single touch panel interaction. By detecting the direction of contact position change, the system extracts directional information from a simple swipe gesture to control complex playback settings, maintaining ease of operation while providing desktop-level functionality.
Data Source
AI summary
An audio device being a mobile terminal includes: a playback unit configured to play back music data; a display configured to display an operation element for accepting a user operation related to playback setting with respect to the music data; a touch panel provided on a surface of the display and configured to accept the user operation; and a playback controller configured to decide a kind of the playback setting related to a playback position in the music data, which is based on a timing at which a contact is started or based on a timing at which the contact is finished with the touch panel corresponding to the operation element displayed on the display, based on a direction of a change in the contact position on the touch panel from the timing at which the contact is started to the timing at which the contact is finished.