Automobile Audio Recorder with Synchronization Controller
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Solution Overview
Problem
Listeners of radio broadcasts in automobiles often miss their favorite programs due to interruptions, changes in travel schedules, or conflicting preferences among passengers, leading to incomplete or missed broadcasts.
Innovation Solution
An audio recorder that interfaces with an automobile radio, featuring a radio tuner and an audio controller/comparator to synchronize and record radio frequency signals, allowing users to independently record and replay desired programs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the automobile radio is used for listening to broadcasts, then entertainment and information are provided to passengers, but the listening experience is interrupted or incomplete due to travel schedule changes, traffic conditions, or passenger preferences
Solution Approach 1:
The system performs preliminary tuning and synchronization of the radio tuner to the automobile radio settings before recording begins. This ensures that the recording is properly synchronized with the broadcast from the start, allowing complete capture of the program even if travel schedules change later.
Solution Approach 2:
The system creates a copy of the radio broadcast by having the radio tuner independently receive and record the broadcast signal. This copy can be played back later, ensuring the listening experience is complete regardless of interruptions during the original broadcast.
2Measurement precision
If the radio tuner is synchronized with the automobile radio, then accurate recording of the broadcast is achieved, but the system complexity increases due to additional synchronization controls
Solution Approach 1:
The audio controller/comparator continuously compares the audio output from the radio tuner with the audio output from the automobile radio. This feedback mechanism automatically adjusts and maintains synchronization between the two signals, ensuring accurate recording without requiring complex manual synchronization controls.
Solution Approach 2:
The system performs self-synchronization by automatically comparing and adjusting the radio tuner output to match the automobile radio output. This self-service approach eliminates the need for external synchronization equipment or complex control systems.
3Reliability
If the radio broadcast is recorded for later playback, then complete listening experience is ensured, but the device complexity increases due to additional recording and storage components
Solution Approach 1:
The system merges the radio tuner function with the recording function in a single integrated device. The radio tuner receives the broadcast and the audio recorder captures it, combining multiple functions into one compact unit that fits within the automobile audio system without requiring separate recording equipment.
Solution Approach 2:
The audio recorder is designed to work with the existing automobile radio system, utilizing its power supply, audio outputs, and control interfaces. This multi-functionality allows the recording system to operate seamlessly with the car's existing audio infrastructure, reducing the need for additional separate components.
Data Source
AI summary
In one embodiment, an audio recorder is disclosed that interfaces with an automobile radio. The audio recorder includes a radio tuner that receives radio frequency signals and converts the signals to audio output and an audio comparator that compares audio output from the radio tuner with audio output of the automobile radio and tunes the radio tuner until the audio output of the audio tuner is synchronized with the audio output of the automobile radio. An audio storage device is activatable to record the audio output of the radio tuner for later playback.