Integrated Audio Communication System Mode Switching
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Solution Overview
Problem
Current motor vehicle systems require separate installations for audio and communication systems, leading to high material and installation costs due to their separation.
Innovation Solution
An integrated audio/communication system with a processing unit that dynamically configures control routines based on operational modes, allowing seamless transitions between audio playback and telephony modes, utilizing a digital signal processor, non-volatile program memory, and a MOST interface to connect multimedia components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate audio and communication systems are installed in the vehicle, then each system can operate independently with dedicated components, but the material costs and installation expenses increase significantly
Solution Approach 1:
The patent combines separate audio playback and telephony systems into a single integrated system that shares common hardware components (processor, memory, bus interface, loudspeakers, microphone) while maintaining independent operational capabilities through software-based mode switching between audio and telephony functions
Solution Approach 2:
The integrated system is designed to perform multiple functions using the same physical infrastructure - the processor executes different control routines for audio playback and telephony operations, the same loudspeakers handle both music output and hands-free telephone audio, and the same microphone captures both audio source material and telephony input
2Quantity of substance
If a single integrated system is used for both audio and telephony, then material and installation costs are reduced, but the system must dynamically switch between different operational modes which adds control complexity
Solution Approach 1:
The system employs dynamic mode switching where the processor selectively executes different control routines based on operational state - loading and running audio playback routines when in audio mode, and switching to telephony control routines when a call is detected, allowing the system to adapt its behavior dynamically without physical reconfiguration
Solution Approach 2:
The system changes operational parameters through software configuration - the processor modifies its execution context by loading different control routines from program memory, changing the operational mode from audio to telephony or vice versa, thereby resolving control complexity through parameter-based state management rather than structural complexity
3Adaptability or versatility
If the processing unit dynamically loads control routines from program memory, then the system can flexibly switch between modes, but the switching time and potential audio interruption may increase
Solution Approach 1:
The system performs preliminary actions by keeping multiple control routines (audio playback and telephony) pre-loaded in program memory, so that when mode switching is required, the processor can quickly load and execute the appropriate routine without lengthy initialization delays, minimizing audio interruption time
Data Source
AI summary
An integrated audio/communication system for use in a motor vehicle includes a processing unit that selectively executes control routines/programs based upon the operational mode of the system. The system may operate in a audio playback mode, and in a telephony mode. In the audio playback mode the processing unit executes a control routine/program associated with audio playback. Whereas, in the telephony mode the processing unit executes a control routine/program associated with telephony. The operational mode of the system may be switched from audio playback to telephony, and visa versa. Selectively configuring the processing unit based upon the operational mode of the system, and allowing the system to easily transition between modes, provides a highly integrated audio/communication system for use in a motor vehicle.