Rule-Based Arbitration for Vehicle Display Content Allocation
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Solution Overview
Problem
Existing display control systems for vehicles face challenges in managing diverse content displays across multiple devices, leading to difficulties in defining all possible content behaviors, especially when multiple applications request simultaneous display, resulting in unintended content being displayed.
Innovation Solution
A rule-based arbitration method is implemented, using a rule definition that includes an arbitration policy and constraint expressions to determine content allocation based on priority, Z order, and size, ensuring that only intended content is displayed by re-arbitrating when constraint expressions are not met.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple display devices are mounted to display diverse contents, then the versatility of content display is improved, but the complexity of managing content allocation and arbitration increases
Solution Approach 1:
The patent segments the content management system into distinct modules: display device management module, content allocation module, and arbitration module. Each module handles specific aspects of content display independently, reducing overall system complexity while maintaining versatility across multiple display devices
Solution Approach 2:
The patent introduces an intermediary arbitration mechanism that mediates between multiple content sources and display devices. The arbitration module acts as a mediator that resolves conflicts and allocates content based on predefined rules, simplifying the management complexity of diverse content display scenarios
2Measurement precision
If rule-based arbitration is implemented with constraint expressions, then the precision of content allocation is improved, but the computational complexity of arbitration increases
Solution Approach 1:
The patent applies preliminary action by pre-defining arbitration rules and constraint expressions before content allocation occurs. The system establishes priority levels, display preferences, and constraint conditions in advance, allowing the arbitration module to make precise allocation decisions through rule matching rather than complex real-time computation
Solution Approach 2:
The patent utilizes parameter changes by transforming content allocation decisions into evaluations of predefined parameters such as priority levels, constraint satisfaction boolean values, and display device capabilities. This parameter-based approach enables precise content allocation through systematic parameter comparison rather than complex computational algorithms
3Reliability
If re-arbitration is performed when constraint expressions are not met, then the reliability of content display is improved, but the time required for content allocation increases
Solution Approach 1:
The patent implements feedback through the re-arbitration mechanism that monitors whether constraint expressions are satisfied after initial content allocation. When constraints are violated, the system provides feedback by triggering re-arbitration to correct the allocation, ensuring reliable content display while limiting re-arbitration to only necessary cases
Solution Approach 2:
The patent applies partial action by performing re-arbitration only for specific content allocations that violate constraint expressions, rather than re-evaluating all content allocations. This selective re-arbitration approach maintains display reliability for affected content while minimizing the time overhead of the re-arbitration process
Data Source
AI summary
An application issues a display request to display a content in an area set on a display device. In response to determining that a different content is displayed in the area, an arbitration is executed to allocate the content to the area to satisfy a rule-based arbitration using a rule definition including (i) an arbitration policy defining a basic arbitration when allocating the content to the area on the display device and (ii) a constraint expression describing a property to be exceptionally satisfied.