Trainable RF Transmitter Variable Code Handling
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Solution Overview
Problem
Existing trainable transceivers in vehicles face challenges in operating with remote control systems that employ rolling codes or cryptographic algorithms, as they need to recognize and synchronize with variable codes and protocols, requiring additional training and validation to ensure secure and effective operation.
Innovation Solution
A trainable RF transmitter in a vehicle is designed to store and generate variable code characteristics for multiple remote devices, allowing it to initiate an operating sequence, generate and transmit RF carrier signals with these characteristics, and receive user input to identify and actuate the appropriate remote device, eliminating the need for separate receiver training and original transmitter involvement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a trainable transceiver uses original transmitter synchronization and receiver training, then compatibility with remote control systems is achieved, but the process becomes complex and time-consuming
Solution Approach 1:
The patent extracts the receiver training function from the traditional synchronization process. Instead of requiring the receiver to be trained with the transmitter, the system generates and transmits variable codes directly from the transmitter, eliminating the need for receiver training while maintaining compatibility.
Solution Approach 2:
The patent inverts the traditional training approach by having the transmitter generate and transmit variable codes rather than having the receiver learn and synchronize with the transmitter. This reversal eliminates the complex receiver training process while achieving reliable communication.
2Reliability
If rolling codes or cryptographic algorithms are used for security, then security is improved, but the transmitter and receiver synchronization becomes more complex
Solution Approach 1:
The transmitter performs self-service by automatically generating and transmitting variable codes using rolling codes or cryptographic algorithms without requiring receiver training or manual synchronization. The system handles its own code generation and transmission, eliminating the need for complex synchronization procedures.
3Ease of operation
If variable codes are generated and transmitted automatically, then operation simplicity is improved, but the transmitter must store and manage multiple code characteristics
Solution Approach 1:
The transmitter is designed with multi-functionality to handle multiple remote control systems with different code characteristics. By storing variable code characteristics for multiple devices and automatically selecting the appropriate codes, the system achieves universal operation across different remote control systems without increasing user complexity.
Data Source
AI summary
A method for training a trainable RF transmitter to transmit variable code signals used to actuate a remote device having a receiver where the transmitter includes a memory that has stored variable code characteristics for a plurality of different remote devices includes initiating a training sequence and generating at least one RF carrier signal having the variable code characteristics associated with one remote device of the plurality of different remote devices. The method further includes transmitting the at least one RF carrier signal to the receiver of the remote device and repeating the generating and transmitting steps for the variable code characteristics of each remote device in the plurality of different remote device until feedback is received from a user that the remote device is activated. Upon receiving an indication that the remote device is activated, the transmitter stores an identifier of the variable code characteristics that activated the remote device.