Server-Based Access Code Distribution for Vehicle Keyless Entry
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Solution Overview
Problem
Existing remote keyless vehicle access systems face challenges in efficiently distributing unique access codes to multiple remote access devices without interference, as third-party manufacturers may not have access to the code generator's algorithm or seed, leading to potential cross-operation issues between devices.
Innovation Solution
A server-based system that stores and manages sequences of access codes specific to vehicle types, allowing for the distribution of unique codes to remote access devices while minimizing interference by using location, time, and population density criteria to determine which codes to provide, ensuring compatibility and reducing cross-operation risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a code generator with a very large number of unique codes is used, then the number of available access codes increases, but the complexity of distributing and managing these codes increases
Solution Approach 1:
The patent segments the large code space into multiple sequences, each sequence containing a manageable subset of codes. These sequences are distributed to different remote access devices, making code management more efficient while maintaining a large total number of available codes across the system.
Solution Approach 2:
The patent introduces a server as an intermediary between the code generator and remote access devices. The server manages the distribution of code sequences, handling the complexity of code allocation and ensuring that devices receive appropriate sequences without direct access to the entire code space.
2Productivity
If the same sequence of access codes is provided to multiple remote access devices, then manufacturing and distribution efficiency improves, but the risk of interference between devices increases
Solution Approach 1:
The patent applies local quality by providing different code sequences to devices based on their specific characteristics, such as geographic location or device identifier. This allows efficient distribution while minimizing interference, as each device operates with codes tailored to its local context rather than using identical sequences.
Solution Approach 2:
The system dynamically assigns code sequences to remote access devices based on various criteria including location and device identity. This dynamic approach allows the system to maintain efficiency by reusing sequences when appropriate while preventing interference by assigning different sequences when needed, adapting to each specific distribution scenario.
Data Source
AI summary
A method for distributing a sequence of access codes to a plurality of users, comprising comprises storing a set of sequences of access codes, wherein each sequence of access codes of the set can be programmed for use by a remote access device with an access system of a specific type. A same sequence of access codes is provided to both a first remote access device of a first user and to a second remote access device of a second user.