Remote Keyless Entry Transmitter Programming via OBD Interface
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Solution Overview
Problem
Existing remote keyless entry systems for vehicles face challenges in efficient programming and registration of remotes with vehicle access systems, requiring sophisticated diagnostic tools and stockpiling of multiple remotes with different control codes.
Innovation Solution
A wireless transmitter with a processor, signal generator, and communication interface that allows temporary wired or wireless connection to a vehicle's in-vehicle network for programming control codes, enabling registration and operation of vehicle access systems, including a method for loading codes via a personal computer and using a transponder circuit for engine immobilizer system control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional RF transmitter programming methods are used, then vehicle access systems can be controlled, but sophisticated diagnostic tools and dealer intervention are required
Solution Approach 1:
The patent introduces an intermediary device that connects the RF transmitter to the vehicle's OBD port, serving as a bridge between the simple remote control and the complex vehicle access system. This intermediary handles the communication protocol translation and programming operations, allowing the end user to program the remote without needing sophisticated diagnostic tools.
Solution Approach 2:
The patent replaces the need for complex mechanical/electrical diagnostic equipment with a software-based solution that runs on a standard personal computer. The programming functionality is implemented through software that communicates with the vehicle via the OBD port, substituting complex hardware-based diagnostic tools with a more accessible computer-based system.
2Adaptability or versatility
If multiple remotes with different control codes are stockpiled, then vehicle access system compatibility is improved, but inventory complexity and cost increase
Solution Approach 1:
The patent implements a universal programming device that can program RF transmitters for multiple different vehicle makes, models, and years through a database stored on the personal computer. Instead of requiring separate pre-programmed remotes for each vehicle type, the system allows a single device to adapt to various vehicle access systems by loading the appropriate programming data from the database.
Solution Approach 2:
The patent pre-stores programming data and control codes for multiple vehicle types in a database on the personal computer. This preliminary preparation of programming information allows the system to quickly adapt to different vehicle requirements without needing physical inventory of pre-programmed remotes, as the programming data is readily available when needed.
3Reliability
If dealer programming procedures are used, then accurate code registration is achieved, but time and cost efficiency decrease
Solution Approach 1:
The patent enables end users to perform the programming operation themselves without requiring dealer intervention. The system provides user-friendly interfaces and automated procedures that guide the user through the programming process, allowing them to complete the task independently while maintaining accurate code registration through the structured programming methodology.
Solution Approach 2:
The patent prepares all necessary programming information and procedures in advance through the database and software interface. The system pre-configures the programming sequence and validates the data before execution, ensuring accurate code registration while reducing the time required during the actual programming operation at the vehicle.
Data Source
AI summary
A remote wireless keyless entry transmitter includes a communications interface for connecting the transmitter directly to an in-vehicle network for registering the transmitter with the vehicle access system. The interface is further connectable to a personal computer to load a set of control codes and programming codes corresponding to a vehicle. The transmitter is programmable to operate multiple functions for multiple vehicles, separately or simultaneously. The transmitter can include a transponder circuit, a display, an accelerometer and a key coupler. A wireless transponder is operationally associated with a vehicle security system by physically connecting the transponder to a vehicle data port with a temporary data link and transferring data between the security system and the transponder over the data link to enable subsequent wireless operation of the security system with the transponder. The transmitter can include an audible signal generator and be programmable to respond to a pager signal.