Music Playback Device Two-Layer Category Selection
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Solution Overview
Problem
Existing music playback devices face difficulties in allowing users to intuitively select music pieces based on mood, as previous methods require complex operations or large display devices, and users struggle to navigate large music libraries without clear references.
Innovation Solution
A music playback device with a two-layered category structure, using main categories and subcategories, displays classification information through characters, colors, and animations, allowing users to intuitively select music based on mood without complex operations, and can be applied to small display devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If music pieces are classified using detailed categories and subcategories, then music selection accuracy is improved, but operation complexity increases
Solution Approach 1:
The patent divides music classification into two distinct layers: main categories (represented by characters) and subcategories (represented by colors). This segmentation allows users to first select a broad category through simple character recognition, then narrow down to specific music types through color selection, thereby maintaining high selection accuracy while keeping each individual operation simple and intuitive.
Solution Approach 2:
The patent introduces visual intermediaries (characters and colors) that mediate between the user and the detailed music classification system. Characters serve as intermediaries for main category selection, while colors act as intermediaries for subcategory selection. These visual mediators simplify the interaction process while preserving the detailed classification structure, resolving the contradiction between precision and ease of operation.
2Ease of operation
If visual elements like thumbnails are used to express music mood, then intuitiveness is improved, but display device size requirement increases
Solution Approach 1:
The patent applies different visual qualities to different classification levels: characters (with distinct visual identities) are used for main categories, while colors (with varying hues and intensities) are used for subcategories. This local differentiation of visual properties allows rich information to be conveyed in a compact format, maintaining high intuitiveness without requiring large display areas, as each visual element is optimized for its specific function.
Data Source
AI summary
When a main category change command is received, a main category change section refers to a category information storage section to change setting from a main category under current setting to another main category according to a predetermined order. After completing the main category change processing, a sub category change section refers to the category information storage section to select one sub category from among sub categories belonging to the newly set main category by use of random numbers. An image data generation section reads displayed information corresponding to the set main category and corresponding to the set sub category from a main-category expression-information storage section and a sub-category expression-information storage section, and generates image data according to the read displayed information.