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David B. Hall
David B. Hall, New Port Richey, FL US
| Patent application number | Description | Published |
|---|---|---|
| 20090083115 | INTERACTIVE NETWORKING SYSTEMS - A networking system may comprise a web site serviced by a web server assembly. The web site may generally comprise a combination of the following components: a crediting system, a chat bidding system, a performance bidding system, a telephony switching system, a media interaction system, a display system, a photo management system, and a messaging system. An exemplary embodiment of the chat bidding system may comprise a plurality of common user accounts, a queue, and a featured user account. Common users of the common user accounts may pose tasks to the featured user, and may make a pledge for each task. The tasks may be stored in, and sorted by, the queue based on their pledges. A featured user of the featured user account may be presented with a highest ranked task in the queue, and may choose to respond to the task or to skip the task. | 03-26-2009 |
| 20110066527 | ORDER FULFILLMENT SYSTEMS - Order fulfillment systems and methods, which may enable a recipient to retrieve an ordered product from a plurality of providers, and may additionally deliver a virtual representation of the ordered product to the recipient. The order fulfillment method may be a paperless process comprising electronically receiving an order from a customer for a product to be retrieved by the recipient. A virtual representation of the ordered product may then be delivered and displayed to the recipient. A status module may be provided to indicate to providers whether the order has yet been fulfilled. The method may further comprise receiving an update to the status module when the recipient selects a provider and retrieves the ordered product from the selected provider. | 03-17-2011 |
David B. Hall, La Crescenta, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090263136 | Polarizaton diversity for optical fiber applications - At least two light beams with polarization diversity are generated that each carry a representation of the same information. Separate optic fibers carry each of the at least two beams through a region subject to vibration to a remote location where the information is recovered by an optical receiver based on the separate light beams. Using separate fibers to carry polarization diverse information minimizes polarization noise at the optical receiver due to vibration of the fibers. | 10-22-2009 |
| 20090293583 | Self-calibrating laser semiconductor accelerometer - A self-calibrating laser accelerometer system that continuously removes bias errors from acceleration measurements under dynamic operating conditions has a frame with a pair of essentially identical mass modulated accelerometers positioned within the frame. Each accelerometer includes a proof mass mounted to the sensing element frame by a flexure suspension. The proof mass is arranged to rotate about an output axis in response to acceleration of the sensing element frame along an input axis. The first proof mass includes a secondary mass that is movable between a first stable position on a first side of the output axis and a second stable position on a second side of the output axis to provide mass modulation of the first proof mass and to provide a selectively reversible polarity to the input axis and to provide self-calibration of bias. | 12-03-2009 |
| 20090309682 | Eight-fold dipole magnet array for generating a uniform magnetic field - An array of permanent magnets is arranged to produce a uniform magnetic field for an NMR gyroscope cell. A magnet support structure has a plurality of sockets formed therein such that the plurality of sockets are located at the vertices of a rectangular parallelepiped. A magnet is mounted in each of the sockets with each magnet having a selected field strength and poling orientation. The magnets preferably are of identical structure and field strength. The magnets are preferably located at the vertices on a first side of the array in pairs having polarities directed away from one another and located at the vertices on a second side of the array in pairs having polarities directed toward one another. | 12-17-2009 |
| 20100007893 | Push-pull two wavelength fabry perot sensor for fiber optic acoustic sensor arrays - Two optical wavelengths are used to interrogate a fiber optic Fabry-Perot sensor having a moveable diaphragm that changes the width of a gap between two reflective surfaces. By picking the right operating point for the gap, the power output for one wavelength increases as the gap width changes and the power for the other wavelength decreases. A ratio of the difference of the two powers over the sum of the two powers is formed to generate a detected signal independent of power and phase fluctuations in a fiber between signal sources and sensor and between sensor and detector. This ratio, which is called the visibility, has a response proportional to the pressure of acoustic disturbances that move the diaphragm. The push-pull sensor can be used with both TDM and CW fan-out array architectures. | 01-14-2010 |
| 20100123459 | Small optics cell for miniature nuclear magnetic resonance gyroscope - A beamsplitter is arranged to split an incident laser beam into a pump beam and a detection beam. The pump beam passes through the beam splitter and then reflects from a pair of mirrors to a quarter waveplate into an NMR cell. After passing through the NMR cell, the pump beam reflects from a mirror to a first photodetector. The detection beam reflects from the beam splitter and propagates on a path perpendicular to the path of the pump beam through the NMR cell. After passing through the NMR cell, the detection beam is incident upon a polarizer. The polarized portion of the detection beam then is incident upon a photodetector. Electrical signals output from the first and second photodetectors may then be processed to determine the rotation rate of the NMR cell about a sensing axis. | 05-20-2010 |
David B. Hall, La Crescents, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090003766 | Continuous optical null tracking method for optical switch - A method and apparatus are provided for real-time correction of a voltage drift of an optical switch. The correction may be made without interrupting an optical data stream of the optical switch. Three voltage states of the optical switch may be monitored continuously to determine whether a voltage drift has occurred. Upon determining that the voltage drift has occurred, a signal processing unit with voltage correction circuitry may apply a voltage to a single port of the optical switch to adjust the three voltages of the optical switch equally to achieve a minimum null signal. The technique may be extended to adjust a voltage drift of multiple optical switches connected in series. | 01-01-2009 |
| 20090028569 | Optimum DC bias for an electro-optic switch - A method for balancing optical transmission for a first ON state and a second ON state of an electro-optic switch having an RF input port and a DC port, in one implementation, comprises the steps of associating a positive RF voltage with the first ON state of the electro-optic switch, associating a negative RF voltage with the second ON state of the electro-optic switch, wherein absolute value of the negative RF voltage associated with the second ON state is approximately equal to the positive RF voltage associated with the first ON state, and balancing optical transmission of the first ON state and the second ON state by adjusting a voltage applied to the DC port to obtain minimum optical transmission in an OFF state of the electro-optic switch. | 01-29-2009 |