USA As Represented by Secretary of the Navy

Other

David J Moretti

Antonio L Deus, Iii

John A Fitzgerald

Michael Amaral

Luke William Michas

Gregory H Ames

Sean J Albert

Christopher M Hansen

Jeremy Conrad Howard

Gerald L Assard

Phil Bussone

Scott Fried

Daniel Dufresne

Ramon A Garcia

Nathan S Saunders

A method of transmitting data includes synchronizing a system clock with a real time clock. Digital data is collected from multiple sources at a system clock time. A sample counter provides a count for each system clock time. The digital data for each source is associated with the count. A data cell is composed from the digital data associated with at least one count and a source identifier. A data frame is created from the data cells from every source. A cell frame is created from a plurality of data frames, and a time frame is composed from a plurality of cell frames. A heads-up cell including the count is transmitted before the time frame. A time/count cell including the count and the real time is transmitted with the associated time frame.

Method for time coding of asynchronous data transmissions

A treatment device for a user's hand and/or wrist. The treatment device includes a housing having an outer surface defined at least partially by a membrane adapted for placement against the user's hand and/or wrist. The treatment device creates localized outwardly deformations in the membrane adapted to create a massaging effect in the user's hand and/or wrist.

Treatment device for hand and wrist ailments

A system for digitally demodulating optical hydrophone signals is provided. The system includes an optical hydrophone connected to an analog-to-digital converter and further connected to a digital signal processor. Within the digital signal processor, a demodulator is calibrated by a preferred automatic calibration circuit such that mixer frequencies are coherently mixed with the incoming acoustic signals received by the hydrophone. The automatic calibration circuit preferably determines an extreme case of phase offset by following a programmable routine including a series of tests. After the extreme case is detected, the precise phase calibration is known and provided to the demodulator mixer tables. The automatic calibration circuit can be utilized for automatic calibrations of multisensor systems containing large numbers of hydrophones.

Digital signal demodulator calibration system and method for optical hydrophones

A system for digitally demodulating optical hydrophone signals is provided. The system includes an optical hydrophone connected to an analog-to-digl converter and further connected to a digital signal processor. Within the digital signal processor, a basic demodulator has a first and second mixing tables, the first table operating at a modulating frequency, .omega., injected into reference legs of the hydrophone, and a second table operating at 2.omega.. The mixer frequencies are coherently mixed with the incoming acoustic signals received by the hydrophone. An automatic calibration circuit which adjusts the phase of the mixers is connected to the basic demodulator.

Optical hydrophone with digital signal demodulation

A time synchronized multi-processor system and a method for determining the absolute time when an event occurs in the system are described. The sys has a plurality of processor elements, a system clock for generating a periodic time signal which is received by each of the processor elements, event reports generated by at least one of the processor elements, a system controller for reading the event reports, and a time board for generating an interrupt signal which causes the system controller to read the event report and to determine the absolute time of the event. The method for determining the absolute time when the event occurs in the system comprises the steps of providing a plurality of processor elements, providing a system clock for generating a time signal, detecting an event and providing at least one processor element with a signal representative of the event, generating an event report with the processor(s) and periodically generating a second or interrupt signal using a time board for causing a system controller board to search for any such event report, read the event report, and determine the absolute time of day of any event in the event report.

Time synchronization algorithm for massively parallel processor systems

A tool for removing the pins that block the opposite ends of an electrical component storage tube, each pin including a shank and an enlarged head at one end of the shank. The tool includes a wedge having a relatively sharp edge and opposite surfaces which diverge from that edge. At least one slot is formed in the wedge which extends between those surfaces and is directed away from the edge to a location on the wedge between those opposite surfaces exceeds the length of the pin shank. Preferably, a pair of guide members are mounted to the wedge member on opposite sides of each slot for engaging and guiding a tube in the general direction of the slot, the spacing of the opposing walls of each member pair being somewhat greater than that of the tube walls. Preferably, the tool is adjustably mounted to a support so that its tool engaging surface can be oriented horizontally, vertically or any angle in between to suite the user of the tool. Also, the tool support may include an open-top receptacle over which the tool may be mounted so that the pins pulled from the tube can fall into the receptacle.

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Wakefield, RI, United States of America

David J Moretti