Dardis
John Dardis, Bristol GB
Patent application number | Description | Published |
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20150339505 | METHOD OF READING DATA - A method of reading data represented by a marking including at least one periodic nanostructure, the marking representing data using a polarisation property of the periodic nanostructure. The method includes detecting polarised electromagnetic radiation reflected from or transmitted by the nanostructure, and determining the data represented by the marking from the detected polarised electromagnetic radiation, wherein the method further includes applying polarised electromagnetic radiation to the nanostructure, and/or the detecting is performed using a polarisation-sensitive detector apparatus. | 11-26-2015 |
Lee Dardis, San Jose, CA US
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20120250792 | Alignment of In-phase and Quadrature Data in Quadrature Phase Shift Keying Optical Transmitters - I/Q data skew in a QPSK modulator may be detected by sending identical or complementary data streams to I and Q channel PSK modulators, setting the relative carrier phase between I and Q to zero or π, and monitoring the average QPSK output power, where the data streams sent to the I and Q channels include streams of alternating ones and zeroes. | 10-04-2012 |
20140016172 | Mach-Zehnder Modulator Drive Level Optimization - A method for determining, by a modulator assembly, an optimal drive point for a Mach-Zehnder modulator (MZM). The modulator assembly applies an electrical modulation signal to the MZM to modulate an optical input signal and create a modulated optical output signal, the modulated optical output having a spectrum that includes a first and third harmonic. The modulator assembly measures the difference in magnitude between the first harmonic and the third harmonic as the amplitude of the electrical modulation signal is varied, and determines a value for the amplitude of the electrical modulation signal that corresponds to a maximum difference between the first harmonic and the third harmonic. | 01-16-2014 |
Michael A. Dardis, Longview, TX US
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20090255674 | Sealing By Ball Sealers - In downhole treatments in the oilfield, ball sealers seated in perforations may not fully seal and may leak fluid through gaps and asperities between the balls and the perforations. A method is given for improving the sealing of ball sealers in perforations by adding a sealing agent that forms a plug in the gaps and severely restricts or eliminates fluid flow. The sealing agent is preferably degradable or soluble, malleable fibers slightly larger than the gaps. Optionally, the particles may be non-degradable, rigid, of different shapes, and smaller than the gaps but able to bridge them. Mixtures of sealing agents may be used. The sealing agent may be added with the ball sealers, after the ball sealers, or both. | 10-15-2009 |
Michael A. Dardis, Richmond, TX US
Patent application number | Description | Published |
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20110226479 | DIVERSION BY COMBINING DISSOLVABLE AND DEGRADABLE PARTICLES AND FIBERS - In downhole treatments in the oilfield, ball sealers seated in perforations may not fully seal and may leak fluid through gaps and asperities between the balls and the perforations. A method is given for improving the sealing of ball sealers in perforations by adding a sealing agent that forms a plug in the gaps and severely restricts or eliminates fluid flow. The sealing agent is preferably degradable or soluble, malleable fibers slightly larger than the gaps. Optionally, the particles may be non-degradable, rigid, of different shapes, and smaller than the gaps but able to bridge them. Mixtures of sealing agents may be used. The sealing agent may be added with the ball sealers, after the ball sealers, or both. | 09-22-2011 |
20150129214 | SEALING BY BALL SEALERS - In downhole treatments in the oilfield, ball sealers seated in perforations may not fully seal and may leak fluid through gaps and asperities between the balls and the perforations. A method is given for improving the sealing of ball sealers in perforations by adding a sealing agent that forms a plug in the gaps and severely restricts or eliminates fluid flow. The sealing agent is preferably degradable or soluble, malleable fibers slightly larger than the gaps. Optionally, the particles may be non-degradable, rigid, of different shapes, and smaller than the gaps but able to bridge them. Mixtures of sealing agents may be used. The sealing agent may be added with the ball sealers, after the ball sealers, or both. | 05-14-2015 |
Sean C. Dardis, Hillsboro, OR US
Patent application number | Description | Published |
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20150185808 | ELECTRONIC DEVICE HAVING A CONTROLLER TO ENTER A LOW POWER MODE - An electronic device may be provided that includes a first controller, a second controller, and a bus to connect between the first controller and the second controller. The electronic device may also include a first signal line between the first controller and the second controller, and the first controller to provide a first signal on the first signal line to the second controller to wake up the second controller from a low power mode. | 07-02-2015 |
20150277935 | TECHNIQUES FOR ADAPTIVE INTERFACE SUPPORT - Techniques for adaptive interface support are described. In one embodiment, for example, an apparatus may comprise logic, at least a portion of which is in hardware, the logic to execute a basic input/output system (BIOS), determine a respective impedance state for each of one or more pins in an M.2 physical interface, determine an interface type for a peripheral device coupled with the M.2 physical interface based on the impedance states for the one or more pins, and control an operational state of the peripheral device during execution of the BIOS, based on the interface type for the peripheral device. Other embodiments are described and claimed. | 10-01-2015 |