Abstract:
According to one embodiment of the present invention, a power supply circuit (10) is provided for selectively supplying power to a vehicle accessory (20). The power supply circuit may be comprised of a switch (30) coupled to a power line from the vehicle battery (15) and to a power input of the accessory (20), and a control circuit (50) coupled to the switch (30). The control circuit (50) may monitor the battery voltage and selectively supply power from the battery (15) to the accessory (20) in response to the battery voltage. The control circuit (50) may supply power from the battery (15) to the accessory (20) when the battery voltage changes at least a predetermined amount over a time period. The control circuit (50) may comprise a microprocessor that adaptively learns signatures in the battery voltage occurring when the engine is running in order to provide power from the battery (15) to the accessory (20) as if the power were supplied from the ignition.
Abstract:
The present invention provides improvements in vehicle vision system components, vehicle vision systems and vehicle equipment control systems employing the vision system components and vision systems.
Abstract:
The present invention relates to various apparatus, algorithms and methods for acquiring and processing images of a scene. Detailsof various aspects of the associated images are identified and may be utilized to generate various vehicular equipment control signals.
Abstract:
A vehicular vision system is disclosed comprising a high dynamic range. The systems and methods are advantages for rear vision, collision avoidance, obstacle detection, adaptive cruise control, rain sensing, exterior light control, and lane departure warning, as well as other applications where a given scene may comprise objects having widely varying brightness values.
Abstract:
A vehicle communication and control system (100) is provided that may be more readily installed in a vehicle and that utilizes minimal additional wiring. According to some of the disclosed embodiments, the electrical components of the "brick" of a communication and control system are integrated into a rearview mirror assembly. Preferably, the microwave antenna (50) for the GPS (80) and the cellular telephone antenna (114) are also integrated into the rearview mirror assembly. Various functions and features of the system are also disclosed.