Mobile Receiver Audio Playback Continuity via Database Fallback
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Solution Overview
Problem
Existing mobile receiving devices experience interruptions in audio playback due to disturbances in signal reception, such as when a vehicle moves out of range or encounters interference.
Innovation Solution
A receiving device with an arithmetic unit that compares information fields from received audio signals to database entries, allowing for seamless playback of alternative audio data from a local or external database when a disturbance is detected, ensuring continuous audio output by cross-fading or switching between signal sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiver relies solely on external broadcast signals for audio playback, then the device complexity is reduced, but the reliability of continuous audio playback deteriorates when signal disturbances occur
Solution Approach 1:
The receiver pre-loads alternative audio content (radio text, program information, substitute signals) into its memory before the actual playback interruption occurs. This preliminary preparation ensures that when a signal disturbance is detected, the receiver can immediately switch to pre-stored alternative content without interruption, thereby maintaining reliable continuous playback without requiring complex real-time processing during the interruption event.
Solution Approach 2:
The receiver introduces an intermediary substitution mechanism where alternative content (such as pre-stored radio text, program information, or substitute signals) acts as a mediator between the disrupted broadcast signal and the playback output. When the primary signal is disturbed, this intermediary content fills the gap, ensuring continuous audio output without direct dependence on the unstable external signal, thus improving reliability without significantly increasing device complexity.
2Reliability
If the receiver switches to alternative frequencies or stations during signal disturbance, then the reliability of audio playback is improved, but the loss of time for switching and potential interruptions increases
Solution Approach 1:
The receiver maintains a pre-configured list of alternative frequencies and stations with their associated content information stored in memory before any disturbance occurs. When a signal disturbance is detected, the receiver can immediately retrieve and switch to the pre-identified alternative content without time-consuming search or selection processes, thereby minimizing switching time and maintaining playback continuity.
Solution Approach 2:
The receiver continuously monitors the quality of the received signal and uses this feedback to detect disturbances in real-time. This continuous feedback mechanism allows the receiver to identify signal degradation early and initiate the switching process to alternative content before complete interruption occurs, reducing the effective loss of time and maintaining seamless playback.
3Object-affected harmful factors
If the receiver uses substitute signals or noise signals during alternative frequency reception, then the inaudibility of the switching process is improved, but the quality of audio playback may deteriorate
Solution Approach 1:
The receiver uses pre-stored radio text, program information, or other substitute content as an intermediary during frequency switching transitions. These substitute signals are designed to be inaudible or less noticeable to listeners while maintaining the continuity of playback. The intermediary content bridges the transition between frequencies without creating audible gaps or disruptions, thus achieving both inaudibility and maintained quality.
Solution Approach 2:
The receiver creates and stores copies of alternative content (such as radio text, program metadata, or substitute audio segments) that can be deployed during frequency switching. These copied elements serve as temporary replacements that mask the switching process from the listener's perception while ensuring continuous output, thereby achieving both inaudibility and quality maintenance.
Data Source
AI summary
A receiving device for mobile reception of a receive signal including an audio signal associated with a currently received piece of music, and a method for playback in a mobile receiver are disclosed. A receiving circuit receives the receive signal and outputs the audio signal and information associated with the audio signal. The information includes one or more information fields associated with the currently received piece of music. An arithmetic unit evaluates the information associated with the audio signal. A database is configured for storing database entries. Each database entry includes data fields and associated audio data. The arithmetic unit assigns the information to an assigned database entry by comparing the information fields with the data fields. The arithmetic unit outputs the audio data of the assigned database entry based on a detected disturbance in the reception of the audio signal.