Hands-Free Device Data Transfer Protocol
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Solution Overview
Problem
Existing hands-free devices for vehicles lack convenience in managing and transferring call history and phone book data between mobile phones and in-vehicle systems, leading to complex user operations and inefficient data synchronization.
Innovation Solution
A hands-free device equipped with a hardware processor that wirelessly connects to a mobile phone, utilizing protocols like HFP and PBAP to transfer incoming and outgoing call history data and phone book data, allowing for seamless data management and simplified user operations through a user-friendly interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the mobile phone automatically transfers all phone book data and history data to the hands-free device, then the user convenience is improved, but the data transfer time and communication resources are wasted
Solution Approach 1:
The patent extracts and transfers only the necessary data (incoming call history, outgoing call history, and relevant phone book entries) rather than all phone book data. The hands-free device selectively receives only the call history data and minimal phone book data needed to display caller information, eliminating unnecessary data transfer and saving time.
Solution Approach 2:
The patent performs preliminary actions by establishing the wireless connection and transferring essential call history data before the user needs to make or receive calls. The hands-free device prepares the call history and phone book data in advance, so that when the user enters the vehicle, the system is ready for immediate hands-free calling without waiting for data transfer.
2Loss of information
If the hands-free device stores all phone book data, then the display of caller information is improved, but the memory usage and device complexity increase
Solution Approach 1:
The patent applies local quality by storing only the specific phone book entries that are relevant to the call history data. Instead of storing all phone book data uniformly, the hands-free device stores phone book entries locally only when they correspond to incoming or outgoing call records, optimizing memory usage while maintaining the ability to display complete caller information for actual calls.
3Productivity
If the system transfers only essential call history data without phone book data, then the data transfer efficiency is improved, but the display of caller names is affected
Solution Approach 1:
The patent performs preliminary action by transferring the essential call history data first, and then selectively transferring only the necessary phone book data entries that correspond to the call history. This staged approach maintains data transfer efficiency while ensuring that caller names are available for display when needed.
Data Source
AI summary
A hands-free device enables a hands-free call by being wirelessly connected to a mobile phone. The hands-free device incudes a hardware processor configured to: perform a control related to data transfer using a transfer protocol for implementing transfer of history data including incoming call history data and outgoing call history data, and phone book data stored in the mobile phone when the mobile phone is in a wireless connection area; receive the history data and the phone book data from the mobile phone through communication using the transfer protocol; and store the history data and the phone book data that are received. The hardware processor is configured to perform the control to transfer the history data prior to the phone book data.