Bluetooth Headset Voice Contact List for Hands-Free Call Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current Bluetooth headsets lack effective voice interaction control methods for call management, relying on resource-intensive technologies like Text-to-Speech (TTS) and Bluetooth Phone Book Access Profile (PBAP), which are unsuitable for small embedded devices and face limitations in language support and stability, while also being inconvenient for hands-free operation.
Innovation Solution
A personalized Bluetooth headset with a voice contact list that allows users to associate audio data with phone numbers, enabling voice-controlled call management through a voice contact list establishment mode, audio input, and processing modules, which reduces reliance on PBAP and TTS, supporting multiple languages and dialects, and allowing hands-free operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If Text-to-Speech (TTS) and Bluetooth Phone Book Access Profile (PBAP) are used for voice reminding, then the incoming call information can be acquired and presented, but the system resources are heavily consumed and the device complexity increases
Solution Approach 1:
The patent extracts only the essential function of voice reminding from the complex TTS and PBAP systems. Instead of using full TTS synthesis and phone book access, it implements a simplified voice reminder system that plays pre-recorded voice segments corresponding to different call states (incoming call, outgoing call, missed call), thereby reducing system resource consumption while maintaining the core information delivery function
Solution Approach 2:
The patent replaces expensive, resource-intensive TTS algorithms with simple, pre-recorded voice audio files. These voice segments are stored in the Bluetooth headset's memory and played back as needed, eliminating the need for complex real-time speech synthesis processing and reducing computational burden on the embedded device
2Adaptability or versatility
If TTS algorithm is used for voice reminding, then multiple languages and dialects can be supported, but the algorithm complexity and resource consumption increase significantly
Solution Approach 1:
The patent prepares voice reminder segments in advance for different languages and dialects during device manufacturing or initial setup. These pre-recorded audio files are stored in the headset's memory, allowing the device to support multiple languages without requiring complex real-time TTS algorithms. When a call event occurs, the system simply plays the appropriate pre-prepared voice segment based on the detected language context
3Loss of information
If PBAP is used to acquire caller name, then the Bluetooth headset can display caller information, but the instability of PBAP leads to unsuccessful phone book access
Solution Approach 1:
The patent extracts only the essential function of caller identification from the unstable PBAP system. Instead of relying on PBAP to access the phone book and retrieve caller names, it implements a simplified approach that plays voice reminders based on call state detection through Bluetooth handshake protocols, eliminating the need for unstable phone book access while maintaining the core functionality of informing the user about incoming calls
Solution Approach 2:
The Bluetooth headset performs self-service by detecting call events through Bluetooth connection status changes and playing appropriate voice reminders autonomously, without requiring access to the mobile device's phone book through PBAP. This self-contained approach improves reliability by eliminating dependence on the unstable PBAP interface
4Ease of operation
If display screen or touch screen is added to Bluetooth headset for man-machine interaction, then the user interface functionality is improved, but the cost increases and the device becomes inconvenient to operate when worn
Solution Approach 1:
The patent replaces the mechanical/visual interaction system (display screen or touch screen) with an acoustic interaction system (voice reminders). Instead of requiring the user to look at or touch a display, the system uses Bluetooth connectivity to detect call events and plays voice reminders through the headset's audio output, providing hands-free operation that is convenient when the device is worn on the ear
Data Source
AI summary
Techniques for controlling a personalized Bluetooth device (e.g., headset) and a voice interaction control method thereof are described. According to one aspect of the present invention, the Bluetooth device is caused to maintain a voice contact list. Each item in the voice contact list corresponds to a phone number associated with a set of audio data (e.g., a voice or a predefined audio). Instead of dialing a phone number on a calling device (e.g., a cellular phone) being paired with the Bluetooth device, a user can speak to the Bluetooth device that is caused to search a corresponding phone number in the voice contact list. The number is then sent to the calling device to make a call.