Vehicle Electronic Apparatus Interrupt Detection via Audio Data
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Solution Overview
Problem
Existing methods for detecting interrupts in portable information terminals connected to vehicle-mounted apparatuses require additional hardware resources and complex software protocols, leading to increased costs and difficulties in synchronizing audio and image data transmissions.
Innovation Solution
An electronic apparatus that receives image and audio data from a portable terminal, determines interrupt events based on identification information added to the data, and controls the output by transmitting control signals to prioritize and manage the display and audio accordingly, allowing seamless switching between applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated interrupt signal line is used to detect interrupts in the portable apparatus, then the reliability of interrupt detection is improved, but the device complexity and cost increase
Solution Approach 1:
The patent extracts the interrupt detection function from a dedicated hardware signal line and relocates it to the audio signal transmission path. The portable apparatus embeds interrupt information within the audio data stream, allowing the vehicle-mounted apparatus to detect interrupts by analyzing the audio signal characteristics rather than through a separate interrupt line, thereby reducing hardware complexity while maintaining detection reliability
Solution Approach 2:
The audio signal line is given dual functionality: it serves both as the primary audio data transmission channel and as the interrupt detection channel. By encoding interrupt information within the audio data stream, the same physical connection performs multiple functions, eliminating the need for additional dedicated interrupt signal lines and reducing overall device complexity
2Ease of operation
If a communication protocol with interrupt protocol is implemented, then the ease of operation is improved, but the device complexity and development cost increase
Solution Approach 1:
The patent merges the interrupt notification function with the existing audio data transmission protocol. Instead of implementing a separate interrupt protocol, the system combines interrupt information embedding within the audio data stream itself. This integration allows the vehicle-mounted apparatus to detect interrupts through standard audio protocol processing, reducing software protocol complexity while maintaining ease of operation
Solution Approach 2:
The audio data stream serves as an intermediary carrier for interrupt information. Rather than requiring direct interrupt signal transmission or complex protocol handshaking, the system uses the audio data flow as a mediator to convey interrupt status from the portable apparatus to the vehicle-mounted apparatus, simplifying the communication mechanism
3Reliability
If audio data and image data are transmitted through separate channels, then the reliability of data transmission is improved, but the synchronization difficulty increases
Solution Approach 1:
The patent combines audio data and interrupt information into a single integrated transmission stream. By embedding interrupt information within the audio data packets that are already being transmitted reliably through the audio channel, the system maintains the reliability of separate channel transmission while eliminating the need for additional synchronization mechanisms between audio and interrupt signals
Data Source
AI summary
An electronic apparatus is connected to an information terminal for receiving image data and audio data relating to an application executed in the portable information terminal and outputting the image data and audio data. The electronic apparatus includes an identification information detecting unit which detects identification information added to the audio data received from the information terminal, an interrupt determining unit which determines the presence of an interrupt event in the information terminal on the basis of the detected identification information, and an output control unit which transmits, when it is determined that an interrupt event has occurred, a control signal for transferring image data relating to an application in which the interrupt event has occurred to the information terminal.