In-Vehicle Multimedia Display Control for Memory Bus Load
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Solution Overview
Problem
High-definition in-vehicle multimedia systems face performance issues due to high memory bus load, leading to slow system response and lag, as concurrent applications require significant bandwidth, and existing methods either compromise user experience or fail to optimally utilize system resources.
Innovation Solution
A multimedia system with a detection module that dynamically adjusts the frame rate of displayed content based on memory bus load and the number of user applications running, attenuating the frame rate when the bus is busy and restoring it when resources are available, thereby optimizing bandwidth usage and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the frame rate is maintained at a high rate for smooth display, then user experience is improved, but memory bus load increases causing system lag and slow response
Solution Approach 1:
The patent implements dynamic frame rate adjustment by monitoring memory bus utilization in real-time and adapting the frame rate accordingly. When bus utilization exceeds a threshold, the frame rate is reduced to prevent system lag; when utilization is low, the frame rate is increased to maintain smooth display. This dynamic adaptation resolves the contradiction between maintaining high user experience and preventing system overload.
Solution Approach 2:
The patent changes the frame rate parameter based on system conditions. By detecting memory bus utilization levels and adjusting the frame rate parameter dynamically, the system optimizes the balance between display smoothness and system responsiveness, resolving the technical contradiction between these two opposing requirements.
2Adaptability or versatility
If multiple applications run concurrently to increase system versatility, then application functionality is improved, but memory bus load increases causing performance degradation
Solution Approach 1:
The patent dynamically adjusts frame rates for different applications based on real-time memory bus utilization detection. When multiple applications are running and bus utilization is high, the system selectively reduces frame rates for non-critical applications while maintaining acceptable performance levels, allowing concurrent application capability without severe performance degradation.
Solution Approach 2:
The patent applies partial action by not maintaining maximum frame rates for all applications simultaneously. Instead, it selectively reduces frame rates for certain applications when bus utilization is high, accepting partial performance reduction in non-critical applications to maintain overall system functionality and versatility.
3Productivity
If frame rate is attenuated to reduce memory bus load, then system responsiveness is improved, but display smoothness deteriorates
Solution Approach 1:
The patent implements dynamic frame rate adjustment that responds to real-time memory bus utilization. When bus utilization is high, frame rate is attenuated to improve responsiveness; when utilization is low, frame rate is restored to maintain display smoothness. This dynamic approach ensures that frame rate attenuation is applied only when necessary, minimizing the impact on display quality while maximizing system responsiveness when needed.
Solution Approach 2:
The patent changes the frame rate parameter dynamically based on detected system conditions. By monitoring memory bus utilization and adjusting the frame rate parameter accordingly, the system optimizes the trade-off between responsiveness and display smoothness, applying attenuation only when system resources are constrained.
Data Source
Figure 1
AI summary
The invention relates to a multimedia system in a vehicle, the system capable of concurrently running more than one user application, the system comprising: at least one processor; and computer-readable storage media comprising non-transitory computer-readable storage medium having computer-readable instructions stored thereon, the system being configured to execute the computer-readable instructions by the processor, wherein the computer-readable instructions comprise a detection module and a display controller, the detection module being configured to detect a condition of the system, and the display controller being configured to determine which user application is a foreground application being displayed on a display and render displayed content,wherein if the detection module detects that the condition goes beyond a threshold, the display controller is configured to render each frame of the displayed content at an attenuated rate, wherein if the detection module detects that the condition is within the threshold, the display controller is configured to render each frame of the displayed content without any attenuation. The invention also relates to a related method of optimizing performance of a multimedia system in a vehicle capable of concurrently running more than one user application.