Patents by Inventor David Pereira
David Pereira has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 8684305Abstract: The invention relates to a method and a device for controlling the power supply of at least one aircraft maintenance actuator (7) from an electrical power supply network (10) of the aircraft comprising means (14) for controlling the electrical power supply of at least one maintenance actuator, and means (15) for establishing communication between the control means and at least one control unit (16) allowing a user to control the operation of at least one actuator. The control means are designed to compare the state of at least one control unit with at least one reference state (SBR) and/or an abnormal state (SBE1, SBE2, SBE3) for switching-on purposes, and to prohibit the activation of the actuator if the state of the control unit is different from a reference state (SBR) or corresponds.Type: GrantFiled: June 2, 2008Date of Patent: April 1, 2014Assignee: AircelleInventor: David Pereira
-
Publication number: 20130119664Abstract: The present invention relates to an electric power supply circuit (1) for a turbojet engine nacelle including at least one electric generator (2) mechanically connected to the shaft of a turbojet engine, said generator being capable of directly supplying electric power to a first electric power device other than a simple monitoring or supervising unit, characterized in that said generator is capable of directly supplying electric power to at least one second electric power device other than a monitoring or supervising unit, as well as to a nacelle including such an electric circuit.Type: ApplicationFiled: June 29, 2010Publication date: May 16, 2013Applicant: AIRCELLEInventors: David Pereira, Hakim Maalioune, Vincent Le Coq
-
Publication number: 20120107109Abstract: A nacelle for receiving an aircraft engine, the nacelle having a tubular stationary cover and at least one movable portion connected to the stationary cover via movement means for moving the movable portion between a position close to the stationary cover and a position spaced apart therefrom. The movement means have asynchronous motors, each having a stator with windings connected in parallel to a power supply circuit and a rotor having windings, each connected to a resistive load in parallel with a winding of the rotor of each of the other motors.Type: ApplicationFiled: May 19, 2010Publication date: May 3, 2012Applicant: AIRCELLEInventors: Jean-Francois Weibel, Jérôme Piaton, Pierre Baudu, David Pereira
-
Publication number: 20110277443Abstract: The invention relates to a de-icing device for an element of a nacelle of a turbojet engine, including at least one heating resistant mat connected to at least one electrical power source (3) and thus defining an assembly (1) of resistant mats, characterised in that the assembly of resistant mats includes one or more subassemblies of resistant mats, each subassembly in turn including one or more resistant mats of the assembly, and each subassembly of resistive mats having a different ohmic value.Type: ApplicationFiled: January 20, 2010Publication date: November 17, 2011Applicant: AIRCELLEInventors: David Pereira, Laurence Lemains
-
Publication number: 20110250054Abstract: The invention relates to a device (9) for controlling the maintenance actuators (7a, 7b) of the cowlings of a turbojet engine nacelle of an aircraft, that comprises a first stage (12) to be connected to an electric power network (10) of the aircraft, at least one second power stage (13a, 13b) including converters of a first DC voltage from the first stage (12) into a second DC voltage for powering at least one maintenance actuator (7a, 7b) connected downstream from the device (9), a control means (14) for the first and second stages (12, 13a, 13b), and a means (15) for establishing a communication between the control means (14) and at least one control housing (16a, 16b) so that a user can control the operation of the actuators, the control means being arranged so as to carry out switching operations between a first operation mode in which the second stage(s) (13a, 13b) are powered, and a second standby mode in which the second stage(s) (13a, 13b) are not powered by the first stage (12).Type: ApplicationFiled: July 16, 2008Publication date: October 13, 2011Applicant: AIRCELLEInventor: David Pereira
-
Publication number: 20110225975Abstract: The present invention relates to a method for commanding and controlling at least one resistive heating element (1) belonging to an aircraft turbojet engine nacelle deicing set, characterized in that it involves the steps aimed at: obtaining, from a central control unit (6) of the aircraft, parameters representative of the exterior flight conditions; determining a thermal model corresponding to the flight conditions obtained; as a function of the thermal model, delivering the appropriate corresponding electrical power (4) to the resistive heating element.Type: ApplicationFiled: August 26, 2009Publication date: September 22, 2011Applicant: AIRCELLEInventors: David Pereira, Laurence Lemains
-
Publication number: 20110088369Abstract: The invention relates to a method for controlling a plurality of actuators (9a, 9b, 9c) for a movable thrust reverser cowl (1), characterized remarkable in that the position deviation between adjacent actuators is measured in real time, and in that the speed profile of the actuator or actuators in question is adjusted by a position deviation exceeding a predetermined threshold.Type: ApplicationFiled: April 27, 2009Publication date: April 21, 2011Applicant: AIRCELLEInventors: Hakim Maalioune, David Pereira
-
Publication number: 20110014043Abstract: A nacelle (1a, Ib) of a turbojet engine (3a, 3b) comprises a rear section equipped with at least one thrust-reversal system having, on the one hand, means of deflecting at least part of the turbojet engine air flow and, on the other hand, at least one moving cowl (4a, 5b, 5a, 5b) able, under the action of at least one electromechanical actuating means (6a, 6b, 7a, 7b), to move from a closed position into an open position in which it opens up a passage in the nacelle and in which the deflection means are active.Type: ApplicationFiled: November 21, 2008Publication date: January 20, 2011Applicant: AIRCELLEInventors: David Pereira, Jean Lamarre, Philippe Vancon, Manuel Sanchez
-
Publication number: 20100201190Abstract: The invention relates to a method and a device for controlling the power supply of at least one aircraft maintenance actuator (7) from an electrical power supply network (10) of the aircraft comprising means (14) for controlling the electrical power supply of at least one maintenance actuator, and means (15) for establishing communication between the control means and at least one control unit (16) allowing a user to control the operation of at least one actuator.Type: ApplicationFiled: June 2, 2008Publication date: August 12, 2010Applicant: AIRCELLEInventor: David Pereira
-
Patent number: 7661039Abstract: A self-synchronizing data bus analyzer is provided which can include a generator linear feedback shift register (LFSR) to generate a first data set, and can include a receiver LFSR to generate a second data set. The data bus analyzer may also include a bit sampler to sample the first data set received through a data bus coupled to the generator LFSR and output a sampled first data set. A comparator can be included to compare the sampled first data set with the second data set generated by the receiver LFSR and provide a signal to the receiver LFSR to adjust a phase of the receiver LFSR until the second data set is substantially the same as the first data set.Type: GrantFiled: May 21, 2008Date of Patent: February 9, 2010Assignee: International Business Machines CorporationInventors: Gerard Boudon, Didier Malcavet, David Pereira, Andre Steimle
-
Patent number: 7606341Abstract: An alignment circuit is configured to receive a reference clock signal (ref_clk) derived from a main clock having a period T and successive sets of 2n data bits that are transmitted in parallel on a data bus wherein said data bits are aligned with respect to said reference clock signal but misaligned with respect to each other. It first comprises a plurality of n aligners. Each aligner is coupled to said reference clock and a pair of said data bits, referred to as primary bits, one data bit (bit_tdat(i)) having the rank (i) in a determined set and the other being the corresponding data bit (bit_tdat(i+n)) having the rank (i+n) in the set.Type: GrantFiled: June 15, 2004Date of Patent: October 20, 2009Assignee: International Business Machines CorporationInventor: David Pereira
-
Publication number: 20090019326Abstract: A self-synchronizing data bus analyser is provided which can include a generator linear feedback shift register (LFSR) to generate a first data set, and can include a receiver LFSR to generate a second data set. The data bus analyzer may also include a bit sampler to sample the first data set received through a data bus coupled to the generator LFSR and output a sampled first data set. A comparator can be included to compare the sampled first data set with the second data set generated by the receiver LFSR and provide a signal to the receiver LFSR to adjust a phase of the receiver LFSR until the second data set is substantially the same as the first data set.Type: ApplicationFiled: May 21, 2008Publication date: January 15, 2009Inventors: Gerard Boudon, Didier Malcavet, David Pereira, Andre Steimle
-
Patent number: 7404115Abstract: A self-synchronising data bus analyser comprising a generator LFSR, a receiver LFSR and a comparator wherein the generator LFSR generates a first data set which is transmitted through a data bus to the comparator; and wherein the comparator compares the first data set with a second data set generated by the receiver LFSR and adjusts the receiver LFSR until the second data set is substantially the same as the first data set.Type: GrantFiled: December 1, 2005Date of Patent: July 22, 2008Assignee: International Business Machines CorporationInventors: Gerard Boudon, Didier Malcavet, David Pereira, Andre Steimle
-
Patent number: 7240249Abstract: A deskewing circuit configured to receive a main clock signal wherein data bits are misaligned with respect to the main clock signal. A multiphase clock generator coupled to the main clock to generate N/2 clock phases on the rising edge of the main clock and N/2 clock phases on the falling edge. A plurality of n samplers to generate a first set of N/2 sampled signals on the positive phases and a second set of N/2 sampled signals on the negative phases. A corresponding plurality of n phase selectors to determine which phase is the best for each set of sampled signals and generate the two selected signals corresponding to that phase. A control logic block configured to receive a corresponding plurality of n first control signals. A data bus gathering all said selected signals for further processing, wherein said selected signals are aligned with said reference clock but misaligned with respect to each other.Type: GrantFiled: June 22, 2004Date of Patent: July 3, 2007Assignee: International Business Machines CorporationInventors: Peter Buchmann, Sylvie Nicot, David Pereira
-
Patent number: 7228313Abstract: An automated method and system for refunding the unused portion of an electronic ticket are provided. In accordance with the method, an aging period is set and is added to the scheduled departure date of the issued ticket. If the schedules departure date plus the aging date is earlier than the current date, a determination is made as to whether the ticket has been used. If the ticket has not been used, the residual value of the ticket is calculated and a refund is issued.Type: GrantFiled: July 1, 1999Date of Patent: June 5, 2007Assignee: American Express Travel Related Services Company, Inc.Inventors: Richard Hand, Wendy Levitt, David Pereira, Anna Austin, Gregory Coles, Duane Jacobsen, Vinny Khosla, Thomas Lunsford, Renee Richards, Leigh Tomaski
-
Patent number: 7211560Abstract: The invention relates to novel hemoglobin compositions, particularly novel recombinant mutant hemoglobin compositions, which eliminate or substantially reduce 1) the creation of heart lesions, 2) gastrointestinal discomfort, 3) pressor effects, and 4) endotoxin hypersensitivity associated with the administration of extracellular hemoglobin compositions in various therapeutic applications. Applications described include treatments for anemia, head injury, hemorrhage or hypovolemia, ischemia, cachexia, sickle cell crisis and stroke; enhancing cancer treatments; stimulating hematopoiesis; improving repair of physically damaged tissues; alleviating cardiogenic shock; and shock resuscitation.Type: GrantFiled: December 29, 2003Date of Patent: May 1, 2007Assignees: Baxter International, Inc., Baxter Healthcare S.A.Inventors: Douglas L. Looker, Izydor Z. Apostol, Eric A. Brucker, Michael P. Doyle, David L. Foster, Christopher B. Glascock, James C. Hartman, Geoffrey F. Lee, Douglas D. Lemon, Edwin G. Moore, Jane P. Richards, Michael R. Schick, Stephen P. Trimble, David Pereira, Ton-That Hai, Kenneth E. Burhop
-
Publication number: 20070086300Abstract: An optical drive writes information to an optical medium by obtaining a write strategy for the optical medium from a write strategy table embedded in the optical medium. A write module in the optical drive reads an optical drive identification code from the optical medium to select a write strategy associated with the optical drive. The write strategy of the embedded write strategy table that is identified for the optical drive is retrieved by the write module to write information to the optical medium with the optical drive using the identified write strategy. In one embodiment, a time stamp of the identified write strategy retrieved from the optical medium is compared with a time stamp of a write strategy already available to the optical drive to select the most recent write strategy for use by the optical drive. The write strategy table is embedded in the optical medium at manufacture of the optical medium, such as by stamping or burning the data into the optical material of the optical medium.Type: ApplicationFiled: November 30, 2006Publication date: April 19, 2007Inventor: David Pereira
-
Publication number: 20070070863Abstract: An optical drive laser diode drive current has a High Frequency Modulation (HFM) signal superimposed to aid optical medium readability. The HFM signal is provided by an HFM oscillator interfaced with the laser diode drive current to provide the HFM signal with a frequency from within a predetermined range. A frequency controller varies the frequency of the HFM signal over time to reduce RF emissions associated with the HFM signal. For instance, the HFM signal frequency is varied in a swept sawtooth or triangle pattern. As another example, the HFM frequency is varied with random selections of frequencies from a predetermined frequency range.Type: ApplicationFiled: September 28, 2005Publication date: March 29, 2007Inventor: David Pereira
-
Publication number: 20070011534Abstract: A self-synchronising data bus analyser comprising a generator LFSR, a receiver LFSR and a comparator wherein the generator LFSR generates a first data set which is transmitted through a data bus to the comparator; and wherein the comparator compares the first data set with a second data set generated by the receiver LFSR and adjusts the receiver LFSR until the second data set is substantially the same as the first data set.Type: ApplicationFiled: December 1, 2005Publication date: January 11, 2007Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Gerard Boudon, Didier Malcavet, David Pereira, Andre Steimle
-
Publication number: 20060200590Abstract: Information handling system component feature sets are selectively enabled or disabled with a feature set table for improved flexibility in the manufacturing of information handling systems with desired features. For example, an optical disc drive has plural features loaded in firmware, such as reading and writing formats for plural types of optical media. A feature set table in firmware identifies the status of the features as enabled, disabled, locked or unlocked. A feature set modifier associated with the optical disc drive enables features having the enabled status to be available for use and disables features having the disabled status to be unavailable for use. Disabled features that have an unlocked status are available for upgrade to enabled status by modification to the feature set table while features with a locked status are prohibited from an upgrade to enabled status.Type: ApplicationFiled: March 3, 2005Publication date: September 7, 2006Inventor: David Pereira