Patents by Inventor Richard Knight
Richard Knight 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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Publication number: 20110074223Abstract: A low-EMI switched circuit comprises two or more switches, wherein impedance transitions of the switches are overlapped and the overlap is varied using variable switch timing based on an output power level of the switched circuit. The variable timing results in a variable impedance overlap between the switches. In one example, when one switch turns off (begins a low to high impedance transition) and a second switch turns on (begins a high to low impedance transition), a greater timing delay in beginning the second switch's transition results in a higher switch impedance overlap than a shorter delay does. If the variable timing is based on output power of the switched circuit, the variable delay can operate to reduce fly-back voltages at high power output levels and reduce shoot-through current at lower power levels, reducing EMI and quiescent current of the switched circuit.Type: ApplicationFiled: September 28, 2009Publication date: March 31, 2011Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Patrick Peter Siniscalchi, Richard Knight Hester
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Patent number: 7889001Abstract: Systems and methods for reduced distortion in a class D amplifier are provided. An “ideal” digital output signal is produced. The “ideal” digital output signal is then compared to the actual output signal in an error amplifier. The integrator input is the difference between the output stage waveform and the ideal output stage waveform. The net input to the integrator now comprises the imperfections of the power stage, and the feedback loop drives their average to zero. This error is then amplified and integrated. The integrated signal is than applied to a summer where it is added to the analog input. Then as in the typical Class D amplifier, the integrated signal is compared in an error amplifier to a ramp signal generated from the ramp generator.Type: GrantFiled: July 15, 2009Date of Patent: February 15, 2011Assignee: Texas Instruments IncorporatedInventor: Richard Knight Hester
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Publication number: 20110012676Abstract: Systems and methods for reduced distortion in a class D amplifier are provided. An “ideal” digital output signal is produced. The “ideal” digital output signal is then compared to the actual output signal in an error amplifier. The integrator input is the difference between the output stage waveform and the ideal output stage waveform. The net input to the integrator now comprises the imperfections of the power stage, and the feedback loop drives their average to zero. This error is then amplified and integrated. The integrated signal is than applied to a summer where it is added to the analog input. Then as in the typical Class D amplifier, the integrated signal is compared in an error amplifier to a ramp signal generated from the ramp generator.Type: ApplicationFiled: July 15, 2009Publication date: January 20, 2011Applicant: Texas Instruments IncorporatedInventor: Richard Knight Hester
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Patent number: 7746123Abstract: Various apparatuses, methods and systems for switched mode electronic circuits with reduced EMI are disclosed herein. For example, some embodiments of the present invention provide apparatuses including a power supply, an output, and a composite switch connected between the power supply and the output. The composite switch includes a plurality of transistors connected in parallel, a switch closing delay line having a plurality of switch closing outputs each connected to a control input of one of the plurality of transistors, and a switch opening delay line having a plurality of switch opening outputs each connected to one of the plurality of switch closing outputs. The switch closing delay line and switch opening delay line are connected in an order that opens the plurality of transistors in a staggered order in time and closes the plurality of transistors in a reverse staggered order in time.Type: GrantFiled: September 9, 2008Date of Patent: June 29, 2010Assignee: Texas Instruments IncorporatedInventors: Richard Knight Hester, Patrick Peter Siniscalchi
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Publication number: 20100060340Abstract: Various apparatuses, methods and systems for switched mode electronic circuits with reduced EMI are disclosed herein. For example, some embodiments of the present invention provide apparatuses including a power supply, an output, and a composite switch connected between the power supply and the output. The composite switch includes a plurality of transistors connected in parallel, a switch closing delay line having a plurality of switch closing outputs each connected to a control input of one of the plurality of transistors, and a switch opening delay line having a plurality of switch opening outputs each connected to one of the plurality of switch closing outputs. The switch closing delay line and switch opening delay line are connected in an order that opens the plurality of transistors in a staggered order in time and closes the plurality of transistors in a reverse staggered order in time.Type: ApplicationFiled: September 9, 2008Publication date: March 11, 2010Inventors: Richard Knight Hester, Patrick Peter Siniscalchi
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Publication number: 20090305031Abstract: Disclosed are novel coatings and other components of articles of manufacture featuring the inclusion of nanodiamonds therein. Also disclosed are methods of achieving such inclusion and methods of utilizing the resultant, improved articles.Type: ApplicationFiled: June 4, 2009Publication date: December 10, 2009Applicant: DREXEL UNIVERSITYInventors: S. Charles Picardi, Dustin B. Doss, Richard Knight, Antonella Stravato
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Patent number: 7628457Abstract: An axle assembly (10) for a wheeled vehicle includes a cylindrical housing (12a) defining a pair of spindle mounting flanges (30). A pair of spindles (16) is secured to the flanges. A plurality of tension rods (60) extend between the spindles at the bottom side of the cylindrical housing and apply clamping forces to the spindles urging the spindles into mounting contact with the spindle mounting flanges and also concurrently couple the flanges to each other. The coupling of the flanges to each other generates a tension force in each tension rod, whereby bending loads exerted by the spindles are shared between the housing and the tension rods.Type: GrantFiled: August 20, 2004Date of Patent: December 8, 2009Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Paul David Pochatila, Mark Richard Knight
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Publication number: 20090205490Abstract: A method and apparatus for humidifying air in which the first side of a permselective water transport membrane is contacted with water vapor laden flue gas from a combustion process having a first water vapor partial pressure and a first temperature and at least a portion of the water vapor is condensed, producing condensed water. The condensed water is transported through the membrane to the opposite side of the membrane, which is contacted with an air stream having a second water vapor partial pressure, which second water vapor partial pressure is less than the first water vapor partial pressure, and having a second temperature, which second temperature is less than the first temperature. Upon contact with the air stream, the condensed water evaporates into the air stream, resulting in a humidified air stream.Type: ApplicationFiled: February 19, 2008Publication date: August 20, 2009Applicant: GAS TECHNOLOGY INSTITUTEInventors: Dexin Wang, William E. Liss, Richard A. Knight
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Publication number: 20090083858Abstract: A method of protecting a password from unauthorized access and a data processing unit are provided. An embodiment of the method of protecting a password from unauthorized access comprises storing data representing at least a portion of a password in a memory, assigning the data to at least one of a plurality of instructions, storing the plurality of instructions as processor executable code in the memory, and preventing read-out of the processor executable code as data from the memory.Type: ApplicationFiled: September 26, 2007Publication date: March 26, 2009Applicant: INFINEON TECHNOLOGIES AGInventors: David JENNINGS, John Barstow, Patrik Eder, Michael Goedecke, Richard Knight
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Publication number: 20090061369Abstract: A combustion system having at least one wall enclosing a combustion chamber and forming a plurality of burner or burner nozzle openings. Disposed within each of the openings is a premix burner or burner nozzle, each of which has a premixed fuel/oxidant outlet proximate the combustion chamber and a fuel/oxidant inlet distal from the combustion chamber. At least a portion of the premix burners or burner nozzles are sized to produce different fuel/oxidant delivery disturbance response times in response to a pressure disturbance within the combustion system. Differences in fuel/oxidant delivery response times are achieved by using burners or burner nozzles having different internal dimensions, different volume flow rates, and, optionally, by varying the fuel/oxidant ratios of the mixtures flowing through the burners or burner nozzles.Type: ApplicationFiled: August 28, 2007Publication date: March 5, 2009Applicant: GAS TECHNOLOGY INSTITUTEInventors: Dexin Wang, David F. Cygan, Richard A. Knight
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Patent number: 7457258Abstract: Systems and methods are described herein for changing the frequency response of a filter, such as a hybrid circuit. One or more tunable components are adjustable to provide the hybrid circuit with a frequency response corresponding to the characteristics of an associated communications network, such as a digital subscriber link.Type: GrantFiled: December 31, 2003Date of Patent: November 25, 2008Assignee: Texas Instruments IncorporatedInventors: Philip Sean Stetson, Richard Knight Hester
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Publication number: 20080077759Abstract: A memory control apparatus in which, in the case of a sequence of requests for a sequence of accesses from an access unit to result in execution of an operation in the memory, the access unit is granted right to use the memory control apparatus to carry out the sequence of accesses and every other access unit is denied right to use the memory control apparatus to access the memory until all of the accesses in the sequence of accesses have been carried out.Type: ApplicationFiled: September 11, 2007Publication date: March 27, 2008Applicant: Infineon Technologies AGInventors: MICHAEL GOEDECKE, DAVID ADDISON, RICHARD KNIGHT
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Publication number: 20070033100Abstract: A method of administering a maintenance, loyalty and gift value program includes the steps of storing in a central database customer value-availability information for each of a plurality of customers to include availability of coupon or maintenance value, loyalty value and gift value. A wireless handheld portable terminal scans a machine-readable tag or a product identifier is entered into the portable terminal to ascertain a given customer's customer identifier. The portable terminal accesses the database to retrieve the information for the given customer via the customer identifier. The customer approves redemption of a value whereupon the availability of the value is deleted from the database and the value is rendered to the customer. Where a group of business entities are associated with one another, values which are associated with one of the business entities may be redeemed at another of the business entities.Type: ApplicationFiled: August 5, 2005Publication date: February 8, 2007Applicant: PERFORMANCE ADMINISTRATION CORP.Inventor: Richard Knight
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Patent number: 7066396Abstract: A heating system having a steam generator or water heater, at least one economizer, at least one condenser and at least one oxidant heater arranged in a manner so as to reduce the temperature and humidity of the exhaust gas (flue gas) stream and recover a major portion of the associated sensible and latent heat. The recovered heat is returned to the steam generator or water heater so as to increase the quantity of steam generated or water heated per quantity of fuel consumed. In addition, a portion of the water vapor produced by combustion of fuel is reclaimed for use as feed water, thereby reducing the make-up water requirement for the system.Type: GrantFiled: October 8, 2004Date of Patent: June 27, 2006Assignee: Gas Technology InstituteInventors: Richard A. Knight, Iosif K. Rabovitser, Dexin Wang
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Publication number: 20060076428Abstract: A heating system having a steam generator or water heater, at least one economizer, at least one condenser and at least one oxidant heater arranged in a manner so as to reduce the temperature and humidity of the exhaust gas (flue gas) stream and recover a major portion of the associated sensible and latent heat. The recovered heat is returned to the steam generator or water heater so as to increase the quantity of steam generated or water heated per quantity of fuel consumed. In addition, a portion of the water vapor produced by combustion of fuel is reclaimed for use as feed water, thereby reducing the make-up water requirement for the system.Type: ApplicationFiled: October 8, 2004Publication date: April 13, 2006Inventors: Richard Knight, Iosif Rabovitser, Dexin Wang
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Patent number: 7004603Abstract: An angle adjustment device comprises a support member, a plurality of holders for light emitting or receiving devices, each holder being supported by the support member for pivoting about at least one axis and an elongate spiral element which co-operates with the holders so that when the spiral element is displaced angularly about its axis relative to the support member, each holder pivots about its said at least one axis.Type: GrantFiled: January 14, 2002Date of Patent: February 28, 2006Inventor: Richard Knight
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Publication number: 20060023461Abstract: A vehicular dynamic angle adjustment lighting device for vehicles that can vary the beam angle and direction of a light beam to adjust for driving circumstances and conditions is described. In some embodiments many of the adjustments to driving circumstances and conditions are implemented automatically without direct input by the driver.Type: ApplicationFiled: September 30, 2005Publication date: February 2, 2006Inventor: Richard Knight
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Patent number: 6971336Abstract: A firetube boiler furnace having two combustion sections and an in-line intermediate tubular heat transfer section between the two combustion sections and integral to the pressure vessel. This design provides a staged oxidant combustion apparatus with separate in-line combustion chambers for fuel-rich primary combustion and fuel-lean secondary combustion and sufficient cooling of the combustion products from the primary combustion such that when the secondary combustion oxidant is added in the secondary combustion stage, the NOx formation is less than 5 ppmv at 3% O2.Type: GrantFiled: January 5, 2005Date of Patent: December 6, 2005Assignee: Gas Technology InstituteInventors: Dennis A. Chojnacki, Iosif K. Rabovitser, Richard A. Knight, David F. Cygan, Jacob Korenberg
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Publication number: 20050201090Abstract: An angle adjustment device comprises a support member, a plurality of holders for light emitting or receiving devices, each holder being supported by the support member for pivoting about at least one axis and an elongate spiral element which co-operates with the holders so that when the spiral element is displaced angularly about its axis relative to the support member, each holder pivots about its said at least one axis.Type: ApplicationFiled: May 3, 2005Publication date: September 15, 2005Inventor: Richard Knight
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Publication number: 20050094968Abstract: An authoring method for creating an audiovisual product. The method has three main stages. The first stage defines components implicitly representing functional sections of audiovisual content and transitions that represent movements between components. The second stage expands the components and transitions to provide a set of explicitly realised AV assets and an expanded intermediate data structure of nodes and links. Each node is associated with one of the AV assets and the links represent movement from one node to another. The third stage creates the audiovisual product in a predetermined output format, using the AV assets and the expanded intermediate data structure of the nodes and the links, wherein the audiovisual product comprises data representing merged first and second video data.Type: ApplicationFiled: January 14, 2004Publication date: May 5, 2005Inventors: Stuart Green, Richard Knight