Wireless Headset FM Reception via Integrated Circuit and Earphone Antenna
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Solution Overview
Problem
Wireless headsets cannot receive FM radio broadcasts as they are not connected to mobile devices through a wire, preventing them from functioning as antennas for FM radio reception circuits in mobile terminals.
Innovation Solution
An audio playback apparatus with an integrated FM reception circuit and near field wireless communication circuit, allowing switching between output signals from the FM reception circuit and near field wireless communication circuit, and using an earphone cable as an antenna to receive FM broadcast signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a wireless headset is used for audio playback, then convenience and degree of freedom are improved, but the ability to receive FM radio broadcast is lost
Solution Approach 1:
The wireless headset is designed to perform multiple functions: it can receive audio signals via near field wireless communication from mobile terminals and also receive FM radio broadcasts independently through its own FM reception circuit. This multi-functionality allows the headset to maintain both convenience (wireless operation) and versatility (FM radio capability).
Solution Approach 2:
The patent combines the FM reception circuit within the wireless headset itself, merging two previously separate functions (wireless audio reception and FM radio reception) into a single integrated device. This allows the headset to function as both a wireless earphone and an FM radio receiver without requiring a wired connection to the mobile terminal.
2Reliability
If an earphone cable is used as an antenna for FM reception, then FM reception sensitivity is improved, but the wireless headset cannot function as an antenna
Solution Approach 1:
The patent integrates the FM reception circuit directly into the wireless headset, combining the antenna function and FM reception function within the headset itself. This eliminates the need to rely on the earphone cable as an external antenna, allowing wireless operation while maintaining FM reception capability.
Solution Approach 2:
The wireless headset acts as an intermediary device that bridges the gap between wireless audio playback and FM radio reception. By incorporating both near field wireless communication and FM reception circuits, the headset mediates between different signal sources and delivers audio output through its speaker, eliminating the need for wired connection to access FM radio.
3Adaptability or versatility
If a separate FM reception circuit is included in the mobile terminal, then FM radio broadcast reception is enabled, but device complexity increases
Solution Approach 1:
The patent extracts the FM reception circuit from the mobile terminal and relocates it to the wireless headset. This extraction reduces the complexity of the mobile terminal while maintaining the ability to receive FM radio broadcasts through the headset's speaker. The terminal only needs to provide wireless audio playback capability, while the headset handles both wireless audio reception and FM radio reception.
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 users to listen to both audio signals transmitted via near field wireless communication and FM broadcast signals, simplifying the configuration of mobile terminals by eliminating the need for a separate FM reception circuit in the terminal.
Implementation Method 1
a cable of an earphone (earphone cable) connected to the receiver has been used as an antenna in order to appropriately receive a FM radio broadcast
Implementation Method 2
use of a headset that receives played back audio signals through near field wireless communication
Data Source
AI summary
An audio playback apparatus includes an integrated circuit in which an FM reception circuit and a near field wireless communication circuit are integrated and packaged into one chip, a switch unit configured to switch between output of an audio signal supplied from the FM reception circuit and output of an audio signal supplied from the near field wireless communication circuit, and a connection terminal configured to output an audio signal selected using the switch unit and supply an FM broadcast signal received through a cable of an earphone connected to the connection terminal to the FM reception circuit. An associated method performed by the audio playback apparatus cooperates with the mobile terminal apparatus and associated method to provide a functional system.