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Randy Ekl
Randy L Ekl, Mark J Johnson, Anthony R Metke, Aparna Pandey, Joseph E Phillips, Christopher G Ware: Method and apparatus for omniscient root node selection in an ad hoc network. Motorola, Randi L Karpinia, Anthony P Curtis, April 13, 2010: US07697456 (6 worldwide citation)

Techniques are provided for selecting a root node in an ad hoc network that contains a plurality of nodes including a first node. According to one implementation of these techniques, a first node can receive a message from at least one of the other nodes. Each message includes a number of primary fa ...


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Randy Ekl
Randy L Ekl, Mark J Johnson, Anthony R Metke, Aparna Pandey, Joseph E Phillips, Christopher G Ware: Method and apparatus for root node selection in an ad hoc network. Motorola, Randi L Karpinia, January 25, 2011: US07876706 (3 worldwide citation)

Techniques are provided for selecting a root node in an ad hoc network comprising a plurality of nodes including a first node. According to one implementation of these techniques, a first node can receive a message from at least one of the other nodes. Each message includes a number of primary facto ...


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C Patrick Richardson, Susan B Major, G Michael Milikich, James E Mathis, Mark J Johnson, Stephen J Van Rooy: Virtual pager for general purpose data terminal. Motorola, Val Jean F Hillman, October 17, 1995: US05459458 (149 worldwide citation)

A general-purpose data terminal (242), such as a personal computer, portable computer, notebook computer, personal intelligent communicator, portable wireless terminal and the like employs a radio frequency (RF) modem (408) and is programmed to function as a two-way acknowledge back pager. The gener ...


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George T Valliath, Kevin W Jelley, Alan G Chen, Mark J Johnson: Liquid crystal display device including multiple ambient light illumination modes with switchable holographic optical element. Motorola, John B Macintyre, Douglas D Fekete, April 28, 1998: US05745203 (70 worldwide citation)

A liquid crystal display device (10) for forming a display includes a liquid crystal panel (12), a switchable holographic optical element (14), and a reflective holographic optical element (16). Ambient light illuminates a front polarizer (18), which polarizes the ambient light and transmits the pol ...


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Mark J Johnson, Brian D Branson: Memory having nonvolatile and volatile memory banks. Motorola, Daniel D Hill, August 30, 1994: US05343437 (42 worldwide citation)

A memory (20) includes a nonvolatile memory array (32) and a volatile memory array (22). The nonvolatile memory array (32) is subdivided into banks of memory cells. The volatile memory array (22) may also be subdivided into multiple banks, and is smaller than the nonvolatile memory array (32). A tra ...


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Mark J Johnson, Mark A Krizik, Charles B Swope: Method for improving accuracy of a velocity model. Motorola, Terri S Hughes, Barbara S Doutre, September 20, 2005: US06947880 (41 worldwide citation)

A first velocity model for a first object (190) and a second velocity model for a second object (195) are established. A spatial relationship between the first object and the second object is established. At least a portion of the first velocity model is adjusted based on at least a portion of the s ...


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Matthew R Perkins, Robert J O Dea, Mark J Johnson, Neal K Patwari: System and method for inferring an electronic rendering of an environment. Motorola, Terri S Hughes, Valerie M Davis, June 20, 2006: US07064660 (40 worldwide citation)

A system and method for inferring an electronic rendering (170) of an environment (110) comprises a plurality of devices (341 and 345), and a processing device. Each wireless device is capable of determining a distance between a neighboring wireless device. Moreover, each device is capable of perfor ...


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Chad M Thomas, Abby True Dahl, Peter K Herman, Mark T Wieczorek, Mark J Johnson: Magnetic check valve. Fleetguard, Andrus Sceales Starke & Sawall, J Bruce Schelkopf, March 24, 2009: US07506663 (27 worldwide citation)

A magnetic check valve includes a cage mountable in a fluid flow duct and supporting a plunger movable between a closed position blocking fluid flow past the valve, and an open position permitting fluid flow past the valve. One of the cage and the plunger includes a magnet, and the other of the cage ...


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Mark J Johnson, Ralph D Souza: Method for increased location receiver sensitivity. Motorola, Terri S Hughes, Valerie M Davis, July 3, 2007: US07239876 (25 worldwide citation)

A first image (200) of a transmitted signal is detected within a received signal containing a plurality of images of the transmitted signal. This is accomplished by detecting a second image (210) of the transmitted signal. A set of characteristics of the second image of the transmitted signal is det ...