Wireless Audio Transmission from Phonograph Records
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Solution Overview
Problem
Conventional record players are complex and large, and existing methods for wireless audio transmission from records to external receivers are not optimal, often requiring specially designed discs and being prone to inaccuracies due to Doppler effects when using built-in speakers.
Innovation Solution
A portable record player device that wirelessly transmits audio signals from a stationary phonographic record to an external receiver using a wireless transmitter, minimizing Doppler effects and allowing for multiple speed settings, enabling playback on wireless headphones or speakers and potentially recording music digitally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional record players use built-in speakers for wireless audio transmission, then audio can be transmitted wirelessly, but Doppler effects cause inaccuracies in the transmitted audio
Solution Approach 1:
The patent extracts the speaker component from the record player system, separating the audio transmission function from the playback function. The record player only captures and transmits audio signals wirelessly, while external speakers handle audio output, eliminating the source of Doppler effects in the transmission chain.
Solution Approach 2:
The patent introduces a wireless transmission system as an intermediary between the record player and external speakers. This intermediary transfers audio signals without physical connection, avoiding the mechanical vibrations and Doppler effects that would occur with built-in speakers while maintaining audio fidelity.
2Adaptability or versatility
If conventional record players are designed with all components integrated, then wireless audio transmission is achieved, but the device becomes complex and large
Solution Approach 1:
The patent extracts unnecessary components from the record player, keeping only the essential audio capture and wireless transmission functions. By removing the speaker and other non-essential components, the device becomes compact while maintaining wireless audio transmission capability.
Solution Approach 2:
The patent makes the record player work with any external speaker system rather than requiring a proprietary integrated system. This universal approach allows the compact record player to function with various external devices, reducing the need for built-in components while maintaining versatility.
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
The solution provides a compact, efficient, and accurate method for wirelessly transmitting audio from records to external receivers, reducing Doppler effects and enabling playback on various devices, including wireless headphones and public performance settings, with a range of up to 100 feet.
Implementation Method 1
minimizing Doppler effects
Data Source
AI summary
A system including a phonograph record implement having a phonograph record with a plurality of grooves operable for recording audio data. A record player device is configured to read the audio data contents of said phonograph record implement. A wheel appliance moves or rotates on said phonograph record implement to produce an audio signal and a needle appliance reads or translates a plurality of grooves to an audio signal as the record player device moves around the stationary phonograph record. A speed control switch is operable for selecting at least one preset speed from a plurality of varying preset speeds for said record player device to operate. A wireless transmitter, which transmits the audio signal to an external receiver, which receives the audio signal produced from said stationary phonograph record for listening remotely.