1
David P Helm, William S Flogaus: Display carrying and protective helmet. The United States of America represented by the Secretary of the Army, Nathan Edelberg, Milton W Lee, Aubrey J Dunn, May 29, 1979: US04156292 (47 worldwide citation)

A helmet capable of providing head protection and of carrying various accories. The helmet includes a form-fit inner liner combined with a transparent mask, and an outer shell. The outer shell has a mount by which a display device may be carried. The display device has a flanged ocular end which sna ...


2
David P Helm, Alan L Wilson, Robert D LoGalbo: Method and apparatus for performing diversity voting in a communication system. Motorola, Daniel C Crilly, February 17, 1998: US05719871 (40 worldwide citation)

A communication system (200) employs a method and apparatus for performing diversity voting in the communication system. A comparator (206) receives a signal frame (207-209) of code words from each of multiple signal sources (202-204). A prioritized code word of each signal frame occupies a correspo ...


3
David P Helm, Phillip C Hargrave: Method for determining voting windows in a diversity repeater. Motorola, Christopher P Moreno, August 4, 1998: US05790605 (13 worldwide citation)

In an improved diversity repeater (200), a plurality of frame sets (213) corresponding to a message are received by a time stamper (202) such that frames within each frame set are time stamped. An arrival time differentiator (204) determines arrival time differentials (217) for each frame set based ...


4
David P Helm, Mario F Derango: Determination of an initial launch time in a simulcast communication system. Motorola, Christopher P Moreno, October 14, 1997: US05678193 (8 worldwide citation)

A simulcast controller 201 receives a communication request at a current time. A preliminary launch time equivalent to the sum of the current time plus a predetermined offset value (401) is calculated along with a difference between the preliminary launch time and a transmission conclusion time (402 ...


5
Phillip C Hargrave, Laura B Kleinschmidt, David P Helm: Method of voting multiple digital frames simultaneously. Motorola, Susan L Lukasik, June 30, 1998: US05774812 (5 worldwide citation)

A method for use by a voter in a communication system includes the steps of receiving (201) a frame of information, wherein the received frame has a frame number. It is determined if a reference frame for the frame number exists (203). If a reference frame for the frame number does not exist, the re ...


6
David P Helm, William S Flogaus: Optical scanning system using folding mirrors and with stabilization. The United States of America represented by the Secreatry of the Army, Nathan Edelberg, Milton W Lee, Aubrey J Dunn, February 10, 1981: US04249791 (5 worldwide citation)

An objective with two lens elements has a first fully-reflective plane mir between the lens elements, and a second such mirror between the objective and a detector. The outermost lens element and the first mirror are carried in a housing rotatable with respect to another housing carrying the other l ...


7
Daniel J McDonald, John W Maher, David P Helm, Brian R Poe: Methods for reliably sending IP multicast packets to multiple endpoints of a local area network. Motorola, Steven R Santema, Terri S Hughes, Indira Saladi, February 14, 2006: US06999465 (4 worldwide citation)

Methods are disclosed for determining a link Op from among a plurality of host devices on a LAN, for exchanging control messages between a communication server and one or more sites having a link Op and a listening Op and for the link Op and/or listening Op to detect and recover from missing packets ...


8

9
Jeffrey F Thurston, David P Helm: Method and apparatus for transmitting multiple communication messages on a communication resource. Motorola, Susan L Lukasik, Steven R Santema, March 7, 2000: US06035206 (3 worldwide citation)

An apparatus (109) for and method of voting provides efficient use of communication resources (111, 112), while avoiding interference caused by other signal sources, particularly in a simulcast system. Although the same communication resource (111) is used for transmission on multiple base stations ...


10
Trent J Miller, Mario F Derango, David P Helm, Gino A Scribano, Paul D Steinberg: Methods and systems for allocating resources from component carriers to a public-safety mobile radio. MOTOROLA SOLUTIONS, October 4, 2016: US09462447

Disclosed herein are methods and systems for allocating resources from component carriers to a public-safety mobile radio. An embodiment takes the form of a process that is carried out by carried out by a Long-Term Evolution (LTE) Evolved Node B (eNodeB). The eNodeB makes a first determination to al ...