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David J Hall, Scott M Yano, Hans G Schantz: System and method for detecting an intruder using impulse radio technology. Time Domain, William J Tucker, October 31, 2006: US07129886 (83 worldwide citation)

An intrusion detection system and method are provided that can utilize impulse radio technology to detect when an intruder has entered a protection zone. In addition, the intrusion detection system and method can utilize impulse radio technology to determine a location of the intruder within the pro ...


2
David J Hall, Jonnathan H Kim: System and method for using impulse radio technology to track the movement of athletes and to enable secure communications between the athletes and their teammates, fans or coaches. Time Domain Corporation, William J Tucker, December 9, 2003: US06661342 (83 worldwide citation)

A system, electronic device and method are provided that utilize the positioning capabilities of impulse radio technology to track one or more moving athletes. The movement of these athletes can be displayed on a television, a handheld unit or an Internet site. In addition, the present invention can ...


3
David J Hall, Scott M Yano, Hans G Schantz: System and method for detecting an intruder using impulse radio technology. Time Domain Corporation, September 2, 2003: US06614384 (81 worldwide citation)

An intrusion detection system and method are provided that can utilize impulse radio technology to detect when an intruder has entered a protection zone. In addition, the intrusion detection system and method can utilize impulse radio technology to determine a location of the intruder within the pro ...


4
David J Hall, Scott M Yano, Hans G Schantz: System and method for detecting an intruder using impulse radio technology. Time Domain, William J Tucker, November 23, 2004: US06822604 (77 worldwide citation)

An intrusion detection system and method are provided that can utilize impulse radio technology to detect when an intruder has entered a protection zone. In addition, the intrusion detection system and method can utilize impulse radio technology to determine a location of the intruder within the pro ...


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Sam H Hay, Herbert U Fluhler, C Alan Cummings, David L Guice, David J Hall: Optical recognition methods for locating eyes. Mark Clodfelter, August 1, 2000: US06095989 (40 worldwide citation)

A plurality of methods of analysis of images of eyes of a subject taken by a reflex photometer are disclosed. In this methods, a computer coupled to the reflex photometer is programmed to locate the pupil of at at least one eye, crop an image array containing the pupil from the total image and perfo ...


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David J Hall: Electronic reflex game. John E McGarry, October 2, 1979: US04169592 (32 worldwide citation)

An electronic reflex game wherein one of a plurality of switches is manipulated by a player to deactuate one of a plurality of light bulbs. An actuation device randomly actuates one of three light bulbs. Three corresponding switches are situated below the lights wherein each switch deactuates the li ...


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Rex L Schlicher, Steven M Rinaldi, David J Hall, Peter M Ranon, Charles E Davis: Nonlinear electromagnetic propulsion system and method. Bernard E Franz, Donald J Singer, September 1, 1992: US05142861 (19 worldwide citation)

An electromagnetic propulsion system based on an extremely low frequency (elf) radiating antenna structure driven by a matched high current pulsed power supply is described. The elf antenna structure resembles a modified three dimensional multiple-turn loop antenna whose geometry is optimized for th ...


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David J Hall, Neil E Sanderson, Edward F H Hall: Glow discharge mass spectrometer. VG Instruments Group, Chilton Alix & Van Kirk, August 1, 1989: US04853539 (18 worldwide citation)

There is provided a mass spectrometer adapted for the elemental analysis of a sample, especially a solid sample, comprising a glow discharge ion source which yields ions characteristic of the elements in the sample. The background spectrum produced by such a mass spectrometer is substantially reduce ...


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David J Hall, Dennis Schofield: Containers. Spencer Frank & Schneider, August 17, 1993: US05236340 (17 worldwide citation)

A container, such as a bucket, for containing tools of particulate material, such as mixed sand and cement, which has two leg members extending from its underside, the leg members being arranged to sit astride the apex of a pitched roof so that the container can sit stably on the roof apex. The cont ...


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