Digital Media Player Playlist Switching for Offline Playback

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Solution Overview

Problem

Existing digital media players using a single playlist can lead to a stale listening experience when the playlist is repeated, and randomization may result in inappropriate song juxtapositions, requiring users to connect to the Internet for fresh content.

Innovation Solution

Implementing a digital media player with multiple curated playlists that automatically switch to a new playlist after the previous one is exhausted, allowing for a continuous, fresh radio-like experience without internet connectivity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If a single playlist is repeated to provide continuous playback, then the duration of action is extended, but the listening experience becomes stale and repetitive

Engineering Contradiction:

Improveduration of playbackVSAvoidlistening experience freshness

Core Design Contradiction:

Duration of action of moving objectVSAdaptability or versatility

Solution Approach 1:

The patent divides the playlist into multiple distinct playlists (first playlist, second playlist, third playlist) with different song sequences. Each playlist is designed to provide a unique listening experience, and the system switches between them to maintain freshness while extending total playback duration.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If randomization is used to keep the listening experience fresh, then the variety is improved, but inappropriate songs may be juxtaposed and the listening experience becomes strange

Engineering Contradiction:

Improvelistening experience freshnessVSAvoidappropriateness of song sequence

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

Each playlist is carefully constructed with specific quality characteristics - the first playlist contains certain types of songs, the second playlist contains different types, and the third playlist contains yet another set. This local differentiation ensures that each playlist maintains appropriate song sequencing while providing overall variety when switched between playlists.

Inventive Principle:

Principle #3Local quality

3Adaptability or versatility

If users connect to the Internet to download new songs and playlists, then the content variety is improved, but the ease of operation deteriorates due to connection requirements

Engineering Contradiction:

Improvecontent varietyVSAvoiduser convenience

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

Multiple playlists with diverse content are pre-loaded and stored in the digital media player's memory before use. The system includes a playlist selection interface that allows users to switch between pre-stored playlists without requiring Internet connectivity, thus maintaining content variety while ensuring ease of operation.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS8713026B2Method for playing digital media files with a digital media player using a plurality of playlists

Publication Date: 2014.04.29 SANDISK TECHNOLOGIES LLC

AI summary

A method for playing digital media files with a digital media player using a plurality of playlists is disclosed. One embodiment uses a plurality of playlists—instead of a single playlist—to reference a given pool of digital media files. After the songs of one playlist have been played, another playlist is selected, and songs from that playlist are played. Since the playlist selection is automatically made by the digital media player while it is offline, a fresh listening experience is created without requiring the user to connect the digital media player to the Internet. Preferably, each playlist is purposefully curated to ensure that the play order keeps the experience commensurate with a particular brand message.