Headset Remote Control Circuit for Hands-Free Playback
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Solution Overview
Problem
Users of MP3-enabled mobile phones face the challenge of diverting attention from ongoing activities to manipulate playback operations using a keypad or touchpad while listening to music, which can be dangerous and inconvenient.
Innovation Solution
A headset with a remote control circuit that generates control signals to control audio playback devices, including a jack plug with specific electrode connections and voltage dividers to produce signals for playback control, allowing users to manage playback functions without directly interacting with the mobile phone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a user manipulates playback operations using a keypad or touchpad on an MP3-enabled mobile phone, then playback control is achieved, but the user's attention is diverted from ongoing activities which may create dangerous situations
Solution Approach 1:
The invention segments the playback control functionality from the mobile phone by implementing it directly in the headset through a remote control circuit. This allows the control function to be separated from the phone body, enabling users to operate playback without handling the phone, thus maintaining safety while preserving ease of operation.
Solution Approach 2:
The headset acts as an intermediary device between the user and the audio playback function. By placing the remote control circuit in the headset, the invention creates a mediator that enables playback control without requiring direct interaction with the mobile phone, thereby solving the safety issue while maintaining operational convenience.
2Ease of operation
If a remote control circuit is added to the headset, then playback control without direct phone interaction is enabled, but the device complexity increases
Solution Approach 1:
The remote control circuit is designed to handle multiple playback control functions (play/pause, volume control, track navigation) using a unified circuit architecture. This multi-functional approach allows the headset to provide comprehensive playback control capabilities while avoiding the need for separate control mechanisms for each function, thereby limiting the increase in device complexity.
Solution Approach 2:
The headset's remote control circuit is designed to be self-contained and self-operating, utilizing the existing audio signal path and power from the mobile phone connection. The circuit automatically detects and responds to user inputs without requiring additional power sources or complex processing units, thus minimizing the increase in device complexity while enabling hands-free control.
Data Source
AI summary
A headset having remote controls for a multimedia playback device is provided. The headset is electrically connected to an audio playback device and includes a jack plug for coupling the headset to the audio playback device; a body having a left and a right speaker unit and a microphone that is connected to the jack plug through a cable, and a remote control circuit that is interposed between the jack plug and the body, generating control signals for controlling the audio playback device. The headset is implemented with a remote control circuit on a signal link connecting the headset and a mobile phone, thereby improving portability of the mobile phone and user convenience in controlling the audio playback related function of the mobile phone.