Patents by Inventor John R. Hughes
John R. Hughes 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).
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Patent number: 7142267Abstract: An active matrix display device comprises an array of picture elements, e.g. liquid crystal picture elements, first and second sets of address conductors (16, 18) extending in row and column directions respectively and connected with the picture elements, and a set of connection conductor lines (30?) extending in the same direction as one set of address conductors (18), each of which is connected to a respective one of the other set of conductors (16), and via which address signals are supplied to that other set. To avoid unwanted display artefacts, each connection conductor line (30?) extends from one side of the array and terminates adjacent its connection point (32) to its associated address conductor (16) and a respective complementary conductor line (30?) is provided which extends from close to the connection point (32) to the opposite side of the array, the complementary conductor line being electrically separate from the connection line (30?) and coupled to reference signal supply (40).Type: GrantFiled: July 25, 2002Date of Patent: November 28, 2006Assignee: Koninklijke Philips Electronics N.V.Inventors: Jason R. Hector, John R. Hughes, Martin J. Edwards
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Patent number: 6946333Abstract: A method of constructing an active matrix pixel device uses a universal active matrix (UAM) comprising a matrix array of switching elements whose spacing defines a base pitch and a pixel array comprising a matrix array of pixel electrodes whose spacing defines a pixel pitch. The pixel pitch is greater than the base pitch. A large proportion of the construction process can be carried out before the customization of the device. Using a common UAM enables a reduction in the time between the customer ordering the device and the completion time. The cost of meeting customer specific requirements for the fabrication of active matrix pixel devices is thus reduced.Type: GrantFiled: February 24, 2004Date of Patent: September 20, 2005Assignee: Koninklijke Philips Electronics N.V.Inventors: Peter W. Green, Stephen J. Battersby, John R. Hughes, Ian D. French
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Publication number: 20040164352Abstract: A method of constructing an active matrix pixel device uses a universal active matrix (UAM) (81) comprising a matrix array of switching elements (20) whose spacing defines a base pitch and a pixel array comprising a matrix array of pixel electrodes (19) whose spacing defines a pixel pitch. The pixel pitch is greater than the base pitch. A large proportion of the construction process can be carried out before the customisation of the device. Using a common UAM (81) enables a reduction in the time between the customer ordering the device and the completion time. The cost of meeting customer specific requirements for the fabrication of active matrix pixel devices is thus reduced.Type: ApplicationFiled: February 24, 2004Publication date: August 26, 2004Inventors: Peter W. Green, Stephen J. Battersby, John R. Hughes, Ian D. French
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Patent number: 6750925Abstract: An active matrix display device comprises an array of picture elements, e.g. liquid crystal picture elements, first and second sets of address conductors (16, 18) extending in row and column directions respectively and connected with the picture elements, and a set of connection conductors (30) extending in the same direction as the second set of address conductors (18), each of which is connected to a respective one of the first set of conductors (16) at the location of a picture element, and via which address signals are supplied to that first set.Type: GrantFiled: September 20, 2002Date of Patent: June 15, 2004Assignee: Koninklijke Philips Electronics N.V.Inventors: Jason R. Hector, John R. Hughes, Martin J. Edwards
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Patent number: 6750514Abstract: A method of constructing an active matrix pixel device uses a universal active matrix (UAM) (81) comprising a matrix array of switching elements (20) whose spacing defines a base pitch and a pixel array comprising a matrix array of pixel electrodes (19) whose spacing defines a pixel pitch. The pixel pitch is greater than the base pitch. A large proportion of the construction process can be carried out before the customisation of the device. Using a common UAM (81) enables a reduction in the time between the customer ordering the device and the completion time. The cost of meeting customer specific requirements for the fabrication of active matrix pixel devices is thus reduced.Type: GrantFiled: October 4, 2002Date of Patent: June 15, 2004Assignee: Koninklijke Philips Electronics N.V.Inventors: Peter W. Green, Stephen J. Battersby, John R. Hughes, Ian D. French
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Patent number: 6717562Abstract: An active matrix display device of the kind having two terminal non-linear switching devices (15) such as thin film diodes connected in series with the electro-optic, e.g. LC, display elements (12) between associated row and column address conductors (16, 17), in which the display elements are driven using pulse width modulated data signals and a wide range of grey-scale levels is achieved by using selection signals whose form is determined such that the current flow through the switching devices upon selection is controlled in an appropriate manner. To this end, the selection signals can be shaped to provide a more constant charging level over the selection period.Type: GrantFiled: March 7, 2001Date of Patent: April 6, 2004Assignee: Koninklijke Philips Electronics N.V.Inventors: Jeremy N. Sandoe, John R. Hughes
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Patent number: 6624800Abstract: A controller circuit (24) for processing video data for an active matrix liquid crystal display device has processing circuitry for performing correction functions on the input video data (D) prior to being supplied to the drive circuit (22) of the display device comprising gamma and color correction, and correction for reducing motion blur in the display picture. The correction circuits (35, 36) are organized such that correction for motion blur reduction (36) is carried out before the gamma and color corrections (35), which enables a beneficial decrease in semiconductor area required when implementing the circuitry in IC form through the size of field store (30) and LUT (32) components used for this function then being smaller. Gamma and color corrections are performed together using a single LUT. Correction for kickback may further be included, such correction preferably being arranged after the gamma and color corrections and using a separate LUT.Type: GrantFiled: March 21, 2001Date of Patent: September 23, 2003Assignee: Koninklijke Philips Electronics N.V.Inventors: John R. Hughes, David W. Parker
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Publication number: 20030085427Abstract: A method of constructing an active matrix pixel device uses a universal active matrix (UAM) (81) comprising a matrix array of switching elements (20) (whose spacing defines a base pitch and a pixel array comprising a matric array of pixel electrodes (19) whose spacing defines a pixel pitch. The pixel pitch is greater than the base pitch. A large proportion of the construction process can be carried out before the customisation of the device. Using a common UAM (81) enables a reduction in the time between the customer ordering the device and the completion time. The cost of meeting customer specific requirements for the fabrication of active matrix pixel devices is thus reduced.Type: ApplicationFiled: October 4, 2002Publication date: May 8, 2003Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Peter W. Green, Stephen J. Battersby, John R. Hughes, Ian D. French
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Publication number: 20030076451Abstract: An active matrix display device comprises an array of picture elements, e.g. liquid crystal picture elements, first and second sets of address conductors (16, 18) extending in row and column directions respectively and connected with the picture elements, and a set of connection conductors (30) extending in the same direction as the second set of address conductors (18), each of which is connected to a respective one of the first set of conductors (16) at the location of a picture element, and via which address signals are supplied to that first set.Type: ApplicationFiled: September 20, 2002Publication date: April 24, 2003Applicant: KONINKLIJKE PHILIPS ELECTRONICSInventors: Jason R. Hector, John R. Hughes, Martin J. Edwards
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Publication number: 20030030606Abstract: An active matrix display device comprises an array of picture elements, e.g. liquid crystal picture elements, first and second sets of address conductors (16, 18) extending in row and column directions respectively and connected with the picture elements, and a set of connection conductor lines (30′) extending in the same direction as one set of address conductors (18), each of which is connected to a respective one of the other set of conductors (16), and via which address signals are supplied to that other set.Type: ApplicationFiled: July 25, 2002Publication date: February 13, 2003Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Jason R. Hector, John R. Hughes, Martin J. Edwards
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Patent number: 6470729Abstract: An opening tool is provided for separating an outer panel of a tailgate, decklid, door or the like from an interior panel in a repair process. The opening tool may work in conjunction with a closing tool which operates to re-secure the outer panel to the interior panel once the necessary repairs have been completed. The removal tool includes a mounting arm, a blade, a shoulder and optionally, a scratch resistor. The mounting arm may be adaptable to be mounted upon an air hammer. Upon removal of the outer door panel, the blade is wedged between the outer door panel and the interior door panel. The blade is integral to the mounting arm and the shoulder. As the blade travels along the hem flange in the removal process, the shoulder maintains the position of the blade as it separates the outer door panel from the interior door panel.Type: GrantFiled: February 25, 2002Date of Patent: October 29, 2002Assignee: Ford Motor CompanyInventors: John R. Hughes, Steven Hamilton, Mark P. Palleschi, James D. Becker
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Publication number: 20010033277Abstract: An active matrix display device of the kind having two terminal non-linear switching devices (15) such as thin film diodes connected in series with the electro-optic, e.g. LC, display elements (12) between associated row and column address conductors (16, 17), in which the display elements are driven using pulse width modulated data signals and a wide range of grey-scale levels is achieved by using selection signals whose form is determined such that the current flow through the switching devices upon selection is controlled in an appropriate manner. To this end, the selection signals can be shaped to provide a more constant charging level over the selection period.Type: ApplicationFiled: March 7, 2001Publication date: October 25, 2001Applicant: PHILIPS CORPORATIONInventors: Jeremy N. Sandoe, John R. Hughes
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Publication number: 20010024199Abstract: A controller circuit (24) for processing video data for an active matrix liquid crystal display device has processing circuitry for performing correction functions on the input video data (D) prior to being supplied to the drive circuit (22) of the display device comprising gamma and color correction, and correction for reducing motion blur in the display picture. The correction circuits (35, 36) are organized such that correction for motion blur reduction (36) is carried out before the gamma and color corrections (35), which enables a beneficial decrease in semiconductor area required when implementing the circuitry in IC form through the size of field store (30) and LUT (32) components used for this function then being smaller. Gamma and color corrections are performed together using a single LUT. Correction for kickback may further be included, such correction preferably being arranged after the gamma and color corrections and using a separate LUT.Type: ApplicationFiled: March 21, 2001Publication date: September 27, 2001Applicant: U.S. Philips CorporationInventors: John R. Hughes, David W. Parker
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Patent number: 6243061Abstract: An active matrix display device of the kind having two terminal non-linear switching devices (15) such as thin film diodes connected in series with the electro-optic, e.g. LC, display elements (12) between associated row and column address conductors (16, 17), in which the display elements are driven using pulse width modulated data signals and a wide range of grey-scale levels is achieved by using selection signals whose form is determined such that the current flow through the switching devices upon selection is controlled in an appropriate manner. To this end, the selection signals can be shaped to provide a more constant charging level the selection period.Type: GrantFiled: August 12, 1997Date of Patent: June 5, 2001Assignee: U.S. Philips CorporationInventors: Jeremy N. Sandoe, John R. Hughes
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Patent number: 5812106Abstract: An active matrix display device, having an array of picture elements (12) comprising electro-optic, for example LC, display elements (14) and associated switching devices (15), for example thin film diodes, driven by selection and data signals applied to sets of row and column address conductors (16, 17) respectively, which includes a reference circuit (34) comprising a switching device (35) connected to a capacitive element (36) and similarly driven periodically by selection signals and a reference data signal applied via one of the column address conductors (17), and an adjustment circuit which senses the voltage at the capacitive element (36), indicative of the operational behavior of the switching device (35), at particular times corresponding substantially to the termination of a selection signal applied to the reference circuit and which, according to the sensed voltage at that time, is operable to adjust the drive voltages used for the picture elements (12) so as to compensate for changes in the operatType: GrantFiled: November 21, 1996Date of Patent: September 22, 1998Assignee: U.S. Philips CorporationInventor: John R. Hughes
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Patent number: 5597967Abstract: Two-phase Al--Si alloy foils are made directly from Al--Si alloy powders by hot pressing. These Al--Si alloy foils are characterized by having a thickness of 0.017 in. or less, and by the fact that they are fine-grained and substantially free of oxygen, nitrogen and deformation-induced defects. The as-pressed Al--Si foils where the primary phase is the Al solid-solution phase are also generally ductile and adapted for subsequent forming operations, including cold rolling. The reduction in thickness imparted in a single pass to an Al-11.6Si alloy foil through cold-rolling was at least about 10%, with up to about 90% reduction in thickness accomplished by a plurality of such passes. These reductions in thickness were accomplished without stress relief annealing, but such annealing may be employed if desirable for microstructural modification.Type: GrantFiled: June 27, 1994Date of Patent: January 28, 1997Assignee: General Electric CompanyInventors: Ann M. Ritter, Melvin R. Jackson, John R. Hughes
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Patent number: 5598004Abstract: An image detector (1, 1a) has an array (2) of sensors (3) formed from layers of material provided on a substrate (4) and separated from a biasing electrode (5) by a radiation conversion layer (6) in which charge carriers are generated in response to incident radiation. Each sensor has a collecting electrode (7a, 7b) for collecting charge carriers generated in the radiation conversion layer (6), a capacitor (c) for storing charge and a switching element (8) having at least first and second electrodes (9 and 10) with one (10) of the first and second electrodes being coupled to the collecting electrode (7a, 7b) for enabling charge carriers stored at the sensor (3) to be read out.Type: GrantFiled: July 19, 1995Date of Patent: January 28, 1997Assignee: U.S. Philips CorporationInventors: Martin J. Powell, John R. Hughes
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Patent number: 5547410Abstract: Methods of making an improved high performance x-ray system having a rotating anode therein are available. The anode includes an improved target/stem connection which reduces tube failure due to anode assembly imbalance. Methods of bonding a metallic target and a metal stem to form a composite rotating x-ray tube target are also available. In these procedures an insert of an alloy, for example, tantalum or its alloys , is placed between the target and the niobium-alloy stem and then bonded thereto to produce a composite x-ray tube target/stem having a high remelt temperature and bond strength which retains its balance throughout the manufacturing process and during x-ray tube operations.Type: GrantFiled: July 8, 1994Date of Patent: August 20, 1996Assignee: General Electric CompanyInventors: Michael R. Eggleston, Mark G. Benz, Melvin R. Jackson, John R. Hughes, Thomas R. Raber
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Patent number: 5503794Abstract: Metal alloy foils are made directly from metal alloy powders by hot pressing. These metal alloy foils are characterized by having a thickness of 0.017 in. or less, and by the fact that they are fine-grained and substantially free of oxygen, nitrogen and deformation-induced defects. In particular, Ti-base alloy foils having an average thickness of about 0.011 in. have been formed directly from Ti-base alloy powders. These as-pressed Ti-base alloy foils are also ductile and adapted for subsequent forming operations, including cold rolling. The deformation which may be imparted in a single pass through cold-rolling to these Ti-base alloy foils is at least about 5%, with up to about 45% deformation imparted to one of these alloys in multiple passes without stress relief annealing. Total reductions in thickness of up to 90% are achieved by a combination of cold-rolling and stress relief annealing.Type: GrantFiled: June 27, 1994Date of Patent: April 2, 1996Assignee: General Electric CompanyInventors: Ann M. Ritter, John R. Hughes
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Patent number: 5480468Abstract: Ni-base alloy foils are made directly from Ni-base alloy powders by hot pressing. These Ni-base alloy foils are characterized by having a thickness of 0.017 in. or less, and by the fact that they are fine-grained and substantially free of oxygen, nitrogen and deformation-induced defects. The as-pressed Ni-base foils are generally ductile and adapted for subsequent forming operations, including cold rolling. The reduction in thickness imparted in a single pass to a Ni-base alloy foil through cold-rolling ranged from 4-10% depending on the alloy composition. The total reduction in thickness ranged from about 10-50% based upon a plurality of such passes. For reductions in thickness greater than about 10%, annealing is employed for stress relief.Type: GrantFiled: June 27, 1994Date of Patent: January 2, 1996Assignee: General Electric CompanyInventors: Ann M. Ritter, Melvin R. Jackson, Paul L. Dupree, Donald N. Wemple, Jr., John R. Hughes