Bluetooth Voice Input via Invalid Call Number
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Solution Overview
Problem
The Bluetooth standard has limited capabilities for carrying audio content beyond spoken audio during calls, preventing the conveyance of voice-based user instructions for internal device applications in Bluetooth-paired devices.
Innovation Solution
A control circuit in a wireless communications device, equipped with both Bluetooth and cellular-telephony transceivers, recognizes a predetermined invalid number to mimic a telephone call, establishing a Bluetooth audio path for conveying spoken commands to a secondary platform, thereby enabling voice-based user input for on-board applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If Bluetooth standard is used for wireless communication, then short-range wireless connection is achieved, but capability to carry voice-based user instructions for internal applications is limited
Solution Approach 1:
The patent applies universality by enabling the Bluetooth connection to serve multiple functions: it maintains its native capability for carrying spoken audio during calls while simultaneously being adapted to carry voice-based user instructions for internal applications. The system achieves this by implementing a dual-path architecture where voice instructions are routed through the existing Bluetooth audio pathway without requiring separate dedicated hardware channels.
Solution Approach 2:
The patent segments the audio processing function into two distinct pathways: one for traditional telephony audio and another for voice-based user instructions. The control circuit identifies and separates voice instruction content from regular call audio, routing them through different processing paths within the host device to enable independent handling and interpretation of voice commands.
2Adaptability or versatility
If Bluetooth connection is used for conveying audio content, then spoken audio during calls is supported, but voice-based user input for internal applications cannot be conveyed
Solution Approach 1:
The control circuit acts as an intermediary that intercepts and processes the audio stream from the Bluetooth connection. It identifies voice-based user instructions within the audio content, separates them from regular spoken audio, and routes them to the appropriate internal application processing pathways, thereby mediating between the Bluetooth audio input and the host device's application layer.
Solution Approach 2:
The system dynamically adapts the Bluetooth connection's functionality based on the type of audio content being transmitted. The control circuit continuously monitors the audio stream and adjusts the processing pathway in real-time, switching between handling regular call audio and extracting voice-based user instructions depending on the current communication context and content type.
Data Source
AI summary
An apparatus having both a Bluetooth-compatible transceiver and a cellular-telephony transceiver has a control circuit operably coupled to the foregoing configured to facilitate at least one on-board application using voice-based user input. The control circuit, upon determining that a call-setup message as received via the Bluetooth-compatible transceiver specifies a particular predetermined number (such as a predetermined number that comprises an invalid number to serve as a telephone number) to call, automatically uses audio content received via the Bluetooth-compatible transceiver as the aforementioned voice-based user input for that on-board application. By one approach, the apparatus can provide that predetermined number to a given secondary platform as part of a conveyed contacts list. In other words voice control of an application of an apparatus, here a smart phone, via a Bluetooth connected remote Bluetooth device is possible, like e.g. via a handsfree kit in a car. As part of the process a telephone call is mimicked on the Bluetooth connection from the secondary platform to the smart phone using a telephone number which in fact can not be used for a normal call.