Abstract: A collision warning device including a receiver for receiving a low power radio frequency signal from a nearby radio frequency signal source. A processor can be electrically coupled to the receiver and configured to analyze the radio frequency signal for determining whether the signal is from a source capable of colliding with the device. The processor can be configured to provide a warning signal when it determines a potential of a collision. A method, a low power radio frequency signal source and a system are provided.

Abstract: A MANET Signals of Opportunity (SoOP) network providing positioning information to mobile users cooperatively. Mobile nodes access SoOP/GNSS to determine location and share navigation and communication information with other users to extend coverage to adjacent nodes. The system also allows disadvantaged users to determine positioning based upon beacon information transmitted without access to GNSS signals.

Abstract: One or more embodiments of the invention provide a method, apparatus, system, and/or article of manufacture for multiplexing and displaying a video stream in real-time. An original video stream and replacement video stream are received in real-time. Both video streams comprise encoded data that consist of one or more anchor frames (i.e., a frame that is not dependent on any other frame), and one or more predicted frames (i.e., a frame that is a computed difference between two video frames). One or more successive frames of the original video stream are output in real-time. A point in the original video stream where the replacement video stream is to be inserted is determined. Output is switched in real-time, to the replacement video stream when the point to insert has arrived. Thereafter, the output is returned in real-time, to the original video stream when the replacement video stream is complete.