Hands-free Device Voice Message Access via PBAP Protocol
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Solution Overview
Problem
Conventional hands-free devices cannot reproduce voice messages or allow users to check answerphone records from a cellular phone, even when connected via HFP and PBAP protocols.
Innovation Solution
A hands-free device with a processor and memory that connects to a cellular phone using HFP and PBAP protocols, enabling the reception and display of outgoing call history, incoming call history, unattended incoming call history, telephone directory data, voice messages, and answerphone records, allowing users to reproduce and manage these records without directly operating the cellular phone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional HFP and PBAP protocols are used for connection, then basic call history and directory data can be transferred, but voice messages and answerphone records cannot be accessed from the hands-free device
Solution Approach 1:
The hands-free device is enhanced to support multiple communication protocols (HFP, PBAP, and message access protocols) to provide universal access to various types of data including call history, directory, voice messages, and answerphone records through a single integrated system
2Ease of operation
If the cellular phone stores all message data, then data completeness is maintained, but the user cannot access messages without directly operating the cellular phone
Solution Approach 1:
The hands-free device acts as an intermediary between the user and the cellular phone's message storage system, establishing communication connections to retrieve and present message data (voice messages and answerphone records) on the hands-free device's interface, allowing access without direct phone operation
3Adaptability or versatility
If only call history data is transferred via PBAP, then connection simplicity is maintained, but voice message and answerphone record functionality is lost
Solution Approach 1:
The data access functionality is segmented into separate protocol layers: HFP for basic hands-free calling, PBAP for call history and directory transfer, and additional message access protocols for voice messages and answerphone records, allowing selective activation based on functionality needs
Data Source
AI summary
A hands-free device according to the present disclosure includes a memory and a processor coupled to the memory. The processor is configured to: connect to a cellular phone in a hands-free telephone conversation-enabled manner pursuant to HFP; receive from the cellular phone at least one of outgoing call history data, incoming call history data, unattended incoming call history data, and telephone directory data stored in the cellular phone by a communication protocol pursuant to PBAP; and receive, when the cellular phone receives a voice message or an answerphone record, at least one of information on the voice message and information on the answerphone record from the cellular phone.