CPNS Audio Playback Terminal FM Transmission System
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Solution Overview
Problem
Existing content playback terminals face limitations in downloading and playing back desired audio content while on the move, as they often require connection to a PC and struggle with providing high-quality audio output, especially when trying to share music with others or listen while driving.
Innovation Solution
A system and method that enables a user terminal to share content with a contents playback terminal via a short-range wireless network, allowing real-time download and playback of content, and outputs audio through an external speaker or FM transmission for enhanced sound quality and sharing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If contents are downloaded to a contents playback terminal and outputted through its speaker, then contents can be played back portably, but an abundant sound environment cannot be provided and output power is low
Solution Approach 1:
The patent introduces an external speaker as an intermediary device between the contents playback terminal and the user. The playback terminal outputs audio signals through a connection interface (e.g., audio jack) to the external speaker, which has higher power output capability. This mediator approach allows the portable terminal to leverage the external speaker's power for enhanced audio output while maintaining the terminal's portability.
2Ease of operation
If contents are played back through a speaker of a small-sized contents playback terminal, then portable playback is enabled, but it is difficult to share music with other people in the same space
Solution Approach 1:
The patent enables the contents playback terminal to serve multiple functions: it can play back contents locally through its own speaker, share contents with other devices via wireless communication (Bluetooth, Wi-Fi), and connect to external speakers for group listening. This multi-functionality allows a single portable terminal to adapt to different usage scenarios including solo playback, pair sharing, and group sharing.
3Ease of operation
If a user listens to contents through an earphone or headphone, then personal audio playback is enabled, but it is difficult to share the music with other people and may disturb the driver
Solution Approach 1:
The patent implements dynamic switching between different audio output modes. The system can dynamically transition from personal audio mode (headphones/earphones) to shared audio mode (external speakers, car audio systems). This dynamic adaptability allows the playback terminal to respond to different user needs and environmental conditions, enabling both personal enjoyment and social sharing without disturbing others.
4Ease of manufacture
If contents are downloaded from a PC through a short-range communication network, then contents can be transferred wirelessly, but the contents cannot be downloaded if the user is moving or cannot connect to the PC
Solution Approach 1:
The patent enables the contents playback terminal to function as an independent download source. Instead of requiring continuous connection to a PC, the terminal can store contents locally and automatically transfer them to connected devices. The system maintains download capability through wireless communication even when the user is moving, using the terminal's own storage and processing resources to ensure reliable content delivery without external PC dependency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables real-time download and playback of content, overcoming capacity limitations and providing high-quality audio output through external speakers or FM transmission, allowing convenient sharing and listening while driving.
Implementation Method 1
converting the decoded contents into the FM data, and then transmitting the FM data
Implementation Method 2
a contents output device demodulates and outputs the FM data
Data Source
AI summary
The present invention relates to a system and method for outputting contents in a CPNS environment, comprising: a user terminal for searching for a contents playback terminal including a wireless communication unit supporting CPNS, sharing the contents with the contents playback terminal by connection to the user terminal through a short-range communication network, decoding corresponding contents in response to a contents playback request received from the user terminal, converting the corresponding contents into frequency modulation (“FM”) data, transmitting the converted FM data to a contents output device for demodulating the FM data received from the contents playback terminal and outputting the demodulated FM data in real-time through a contents output device.