Display Device Lyric Extraction via DLNA Metadata Scan
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The Digital Living Network Alliance (DLNA) standard does not provide an application programming interface (API) for extracting lyric information, making it impossible for music reproduction devices to output lyrics when reproducing music shared between devices.
Innovation Solution
A display device with a controller that requests and receives lyric information from an external device through an app-to-app connection or metadata scan, allowing it to display lyrics while outputting music, even when the external device is connected via a DLNA standard.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the DLNA standard is used for music reproduction, then device compatibility and content sharing are improved, but lyric information extraction capability deteriorates
Solution Approach 1:
The patent introduces an intermediary mechanism (metadata scan module and app-to-app connection interface) that mediates between the DLNA standard's limitations and the need for lyric information. This intermediary layer extracts lyric metadata from music files through alternative pathways, resolving the contradiction by finding a middle ground solution that works within the DLNA framework while still obtaining lyric data.
Solution Approach 2:
The patent extracts lyric information separately from the main DLNA music reproduction process. By using metadata scanning and dedicated lyric extraction modules, the system pulls out lyric data independently from the music file transmission, allowing music playback to continue via DLNA while lyric information is obtained through supplementary extraction mechanisms.
2Loss of information
If lyric information is extracted through metadata scan, then lyric output capability is improved, but operational time and processing burden increase
Solution Approach 1:
The patent implements preliminary action by pre-scanning and extracting lyric metadata from music files before actual playback. The system performs metadata scanning in advance, storing lyric information in a readily accessible format, so that when music playback is initiated, the lyric data is already prepared and can be displayed immediately without delay.
Solution Approach 2:
The patent merges the lyric extraction process with the existing music file processing workflow. By combining metadata scanning with the music reproduction pipeline, the system extracts lyric information during the same operational sequence as music playback setup, eliminating the need for separate processing steps and reducing overall operational time.
3Adaptability or versatility
If external device connection methods are expanded, then device compatibility is improved, but system complexity increases
Solution Approach 1:
The patent implements universality by designing a multi-functional connection interface that handles both DLNA standard connections and direct metadata scanning through a unified architecture. The controller is configured to automatically select the appropriate lyric extraction method based on the connection type, providing universal compatibility across different device connection methods without requiring separate dedicated systems for each connection type.
Data Source
AI summary
The present disclosure relates to a display device and a display system for providing lyrics when reproducing music of the external device, regardless of a connection state of an external device. The display device includes: a display; a controller configured to receive a music reproduction command through an external device; and an audio output interface configured to output music received from the external device, wherein, when the controller receives the music reproduction command, the controller is configured to request lyric information to the external device, and when the controller receives the lyric information from the external device, the controller is configured to display lyrics through the display while outputting the music.