US Patent 7885739 Open-ended vehicle diagnostic device interface

An apparatus and method are provided that allow a user to increase the functionality of a vehicle data recorder. An option card can be connected to the option card connector on the vehicle data recorder. The option card includes at least one component thereon, such as a software, a processor, a FPGA, a memory, a power supply, a data port, a communication protocol controller, pins, a multiplexer, a hardware and a combination thereof. The components can allow the vehicle data recorder to communicate with new communication protocols that are developed, with current ones that may not have been included in the vehicle data recorder or additional functions required by the user.