Time Domain Corporation

Tdc Acquisition Holdings, Inc.

David C Meigs

James Lee Richards

Larry W Fullerton

Donald A Kelly

James S Finn

William D Welch, Jr

Timothy T Payment

William J Tucker

Ivan A Cowie

Randall S Stanley

A System and Method for Person or Object Position Location Utilizing Impulse Radio, comprising a plurality of reference impulse radios; an object or person to be tracked having a mobile impulse radio associated therewith; an architecture with an associated positioning algorithm associated with said plurality of impulse radio reference radios and said mobile impulse radio; and display means for displaying the position of the person or object whose position is to be determined.

System and method for person or object position location utilizing impulse radio

A system and a method for distance measurement utilizes a radio system. The distance is measured in coarse resolution, and in fine resolution that corresponds to distance attributes. The distance between first and second radio transceivers is determined from the coarse distance and the fine distance attributes.

System and method for distance measurement by inphase and quadrature signals in a radio system

A system, electronic monitor and method are provided that utilize the communication capabilities and positioning capabilities of impulse radio technology to enable people (e.g., broadcasters, fans, trainers, jockeys) to track a position of a horse as it moves around a race track and/or to enable people to monitor one or more vital signs of the moving horse. The present invention may also be used track and/or monitor other animals such as dogs and people.

System and method for using impulse radio technology to track and monitor animals

A system, electronic monitor and method are provided that utilize the communication capabilities and positioning capabilities of impulse radio technology to enable people (e.g., mechanics, fans, broadcasters, drivers) to track a position of a vehicle as it moves around a race track and/or to enable people to monitor an engine, transmission system, braking system and other vehicular parameters of the moving vehicle.

System and method for using impulse radio technology to track and monitor vehicles

A system, electronic monitor and method are provided that utilize the capabilities of impulse radio technology to overcome the shortcomings of conventional house arrest monitoring systems. One embodiment of the present invention enables monitoring personnel (e.g., police officers, parole officers) to determine whether a person under house arrest and carrying an electronic monitor stays within their home. Another embodiment of the present invention enables monitoring personnel to determine whether a person under house arrest and carrying an electronic monitor is located within their home and/or also enables monitoring personnel to monitor the vital signs of that person.

System and method using impulse radio technology to track and monitor people under house arrest

A system, apparatus and method are provided that utilize the communication capabilities and positioning capabilities of impulse radio technology to overcome the shortcomings in conventional prison monitoring systems. Basically, the present invention enables prison personnel to track the movements of a prisoner and/or monitor the vital signs of a prisoner using impulse radio technology that is well suited for a prison environment.

System and method for tracking and monitoring prisoners using impulse radio technology

A system, electronic monitor and method are provided that utilize impulse radio technology to enable a farmer to accurately track a position of an object (e.g., farm equipment, farm animal, farm employee) as the object moves around a farm and/or to enable a farmer to monitor a variety of parameters associated with the moving farm equipment. In addition, the system, electronic monitor and method can utilize impulse radio technology to help control either remotely or automatically one or more pieces of farm equipment.

System and method for using impulse radio technology in the farming field

A system, electronic monitor and method are provided that utilize impulse radio technology to alert medical personnel when a patient needs medical assistance. In addition, the present invention includes a system, electronic monitor and method that utilize the communication capabilities and positioning capabilities of impulse radio technology to enable medical personnel to monitor one or more vitals signs of a patient and/or to enable medical personnel to determine a current a position of a patient in a building such as a hospital, nursing home or their home.

System and method using impulse radio technology to track and monitor people needing health care

A system and a method for distance measurement utilizes a radio system. The distance is measured by determining the time it takes a pulse train to travel from a first radio transceiver to a second radio transceiver and then from the second radio transceiver back to the first radio transceiver. The actual measurement is a two step process. In the first step, the distance is measured in coarse resolution, and in the second step, the distance is measured in fine resolution. A first pulse train is transmitted using a transmit time base from the first radio transceiver. The first pulse train is received at a second radio transceiver. The second radio transceiver synchronizes its time base with the first pulse train before transmitting a second pulse train back to the first radio transceiver, which then synchronizes a receive time base with the second pulse train. The time delay between the transmit time base and the receive time base can then be determined. The time delay indicates the total time of flight of the first and second pulse trains. The time delay comprises coarse and fine distance attributes. The coarse distance between the first and second radio transceivers is determined. The coarse distance represents the distance between the first and second radio transceivers in coarse resolution. An in phase (I) signal and a quadrature (Q) signal are produced from the time delay to determine the fine distance attribute. The fine distance indicates the distance between the first and second transceivers in fine resolution. The distance between the first and second radio transceivers is then determined from the coarse distance and the fine distance attributes.

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Huntsville, AL, United States of America

David C Meigs