Madjid
Madjid Berraki, Marseille FR
Patent application number | Description | Published |
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20100110829 | System and Method for Reducing the Effects of Ghosts From the Air-Water Interface in Marine Seismic Exploration - A system mechanically alters the geometry of the surface of the water by breaking the water surface with a mechanical device. The mechanical device may comprise a plurality of propellers, a plurality of aquafoils in the shape of plows, a wire whip, or other mechanical device to reduce the coefficient of reflectivity of the air-water interface. | 05-06-2010 |
20120092955 | System and Method for Reducing the Effects of Ghosts From the Air-Water Interface in Marine Seismic Exploration - A system mechanically alters the geometry of the surface of the water by breaking the water surface with a mechanical device. The mechanical device may comprise a plurality of propellers, a plurality of aquafoils in the shape of plows, a wire whip, or other mechanical device to reduce the coefficient of reflectivity of the air-water interface. | 04-19-2012 |
Madjid Berraki, La Garde FR
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20110299360 | SEISMIC ARRAY WITH SPACED SOURCES HAVING VARIABLE PRESSURE - An over/under seismic source system includes a first umbilical to a first gun array at a first depth and a second umbilical at a different air pressure to a second gun array at a second, lower depth. The air pressure to the second, lower gun array is tuned so that the periods of the gun bubbles from the higher and lower gun arrays match in order to improve wavefield separation in subsequent data processing. | 12-08-2011 |
Madjid Birouk, Winnipeg CA
Patent application number | Description | Published |
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20140334244 | Apparatus for Seeding a Fluid with Tracing Material - A new seeder for laser-based velocity measurements in gaseous combusting and non-combusting flows is described herein. The performance of the seeder was tested under a variety of flow rate conditions. The testing revealed that control over the concentration of seeding particles, stability of particles supply, extended range of flow rate, and breakup of the agglomerates makes the newly designed seeder advantageous over its counterparts, especially for weak flow rates applications. | 11-13-2014 |
Madjid Hafizi, San Diego, CA US
Patent application number | Description | Published |
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20140035549 | MULTI-STANDARD, AUTOMATIC IMPEDANCE CONTROLLED DRIVER WITH SUPPLY REGULATION - A pre-driver circuit generates a driver bias signal based on a swing command, a driver impedance characteristic, and an input signal. A driver receives the driver bias signal and generates, in response, a driver signal having a swing and having an output impedance corresponding to the bias signal. Optionally, the driver receives power from a switchable one of multiple supply rails, according to the swing. Optionally, the driver has voltage controlled resistor elements and the driver bias signal is generated based on the swing command and a replica of the driver voltage controlled resistor elements. | 02-06-2014 |
20140035625 | METHOD AND APPARATUS FOR CONSTANT OUTPUT IMPEDANCE, VARIABLE PRE-EMPHASIS DRIVE - A population of drivers is provided in parallel to a driver output and a population of pre-emphasis path drivers is provided in parallel to the driver output. The population of drivers is updated and the population of pre-emphasis path drivers is updated in an inverse relation to the updating of the population of pre-emphasis path drivers. Optionally, the population of drivers has an initial value of n and the population of pre-emphasis path drivers has an initial value of m, and the sum of n and m is P. Optionally, the updated population of n is n′ and the updated population of m is m′, and n′ is approximately equal to P−m′. | 02-06-2014 |
20140176196 | METHOD AND APPARATUS FOR MULTI-LEVEL DE-EMPHASIS - A distribution current is split into a first control current, a second control current, and a third control current, in an apportionment according to a distribution command. A first control voltage is generated in response to the third control current. A second control voltage is generated as indication of the first control current, and a third control voltage is generated as indication of the second control current. Optionally, de-emphasis contribution of a first driver, a second driver and a third driver to an output is controlled based, at least in part, on the first control voltage, the second control voltage and the third control voltage, respectively. | 06-26-2014 |
Madjid Ladjici, Chevilly Larue FR
Patent application number | Description | Published |
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20140102806 | TUBULAR COMPONENT FOR DRILL STEM CAPABLE OF BEING CABLED, AND METHOD FOR MOUNTING A CABLE IN SAID COMPONENT - A tubular component for a drill stem that can be cabled includes a first end zone, a second end zone, a sheath, the sheath extends between the first end zone and the second end zone, and a liner fixed in a bore of the first end zone. The liner includes at least one take-up chamber for a cable disposed in the sheath. | 04-17-2014 |