Configurable Message Memory for Variable Data Field Lengths
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Solution Overview
Problem
Existing message transmission systems, such as CAN and FlexRay, are inefficient in using memory due to a fixed association between message-object memories and physical memory, leading to suboptimal performance and increased costs in applications with varying message data field lengths.
Innovation Solution
A configurable message memory with a logical, virtual representation and a physical memory divided into segments, allowing flexible association and optimization of memory usage, where the length of message-object memories and their data capacity can be adjusted based on specific application requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the physical memory is divided into fixed fields to match the maximum data-field length, then the message memory can store messages with the maximum data-field length, but the number of message-object memories is limited and cannot be expanded without enlarging the physical memory
Solution Approach 1:
The patent segments the physical memory into variable-length fields instead of fixed fields. Each physical field can be dynamically allocated to different message-object memories based on their actual data-field length requirements, allowing the number of message-object memories to be expanded without proportionally enlarging the physical memory.
Solution Approach 2:
The patent introduces dynamic configuration where the association between physical memory fields and message-object memories is not fixed but can be reconfigured. The system can adaptively assign physical fields to different message-object memories based on runtime requirements, enabling flexible expansion of the number of message-object memories.
2Ease of manufacture
If message-object memories are organized to always permit storage of messages with maximum data-field length, then the memory structure is simplified, but memory space is wasted for applications with shorter data fields
Solution Approach 1:
The patent applies local quality by allowing different physical fields to have different effective sizes depending on their assignment to specific message-object memories. Instead of all fields being uniformly sized for maximum capacity, each field can be optimized for the specific data-field length requirements of its assigned message-object memory, reducing wasted space.
Solution Approach 2:
The patent changes the parameter of memory field size from fixed to variable. The system can configure the effective size of physical fields based on the data-field length requirements of different message-object memories, allowing optimization of memory space utilization for specific applications while maintaining the ability to handle maximum length messages.
3Quantity of substance
If the number of message-object memories is expanded by enlarging the physical memory, then more message-object memories are available, but the costs increase
Solution Approach 1:
The patent segments the physical memory into smaller, reconfigurable fields that can be dynamically assigned to multiple message-object memories. This segmentation allows the system to expand the number of message-object memories by efficiently repartitioning existing physical memory rather than requiring proportional increases in physical memory size.
Solution Approach 2:
The patent introduces dynamic memory configuration where the mapping between physical memory fields and message-object memories can be changed at runtime. This dynamic approach allows the system to maximize the utilization of existing physical memory for the number of message-object memories needed, avoiding unnecessary physical memory expansion and associated costs.
Data Source
AI summary
A message memory (1) with a flexible association between the message-object memories of the message memory (2) and the segments of a physical memory (3). The association is made through configuration, wherein one or more memory segments form a cluster as a function of the length of the message content to be stored.