Patents by Inventor David Rohlfing
David Rohlfing 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: 11941535Abstract: This invention provides a computer-implemented method of modifying an algorithm operating on a computing system, and a device for implementing said method, the method comprising the steps of: applying the algorithm to a first set of inputs; determining a relevance score for a first input of the first set of inputs based on: a first effectiveness value of the first input, wherein the first effectiveness value represents a contribution of first input to the algorithm, and a first computational cost of the first input, wherein the 1 first computational cost represents the computational resources of using the first input in the algorithm; defining a second set of inputs based on the determined relevance score of the first input; and applying the algorithm to the second set of inputs.Type: GrantFiled: September 8, 2020Date of Patent: March 26, 2024Assignee: BRITISH TELECOMMUNICATIONS public limited companyInventors: Kjeld Jensen, Stephen Cassidy, Botond Virginas, David Rohlfing
-
Patent number: 11757728Abstract: This invention provides an autonomic method for controlling an algorithm on a multi-terminal computing system, wherein the algorithm is configured to analyse diagnostic data for each terminal and an outcome of the analysis is a first action or a second action, and a device for implementing the method, the method comprising the steps of: receiving a first set of data for the multi-terminal computing system; applying the algorithm to the first set of data to classify each terminal in the multi-terminal computing system as being associated with either a first action or second action; re-classifying a first subset of terminals classified as being associated with the first action as being associated with the second action; and applying the first actions, second actions, and reclassified second actions respectively to each terminal in the multi-terminal computing system.Type: GrantFiled: December 9, 2016Date of Patent: September 12, 2023Assignee: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANYInventors: Kjeld Jensen, Botond Virginas, Stephen Cassidy, Phil Bull, David Rohlfing
-
Patent number: 11641219Abstract: A method is presented of determining whether a digital subscriber line is susceptible to radio frequency interference. The method measures the signal to noise ratio (SNR) margin on the digital subscriber line over a number of 24 hour periods. The measured SNR margin over a given 24 hour period is then compared to a reference function of SNR margin over time (24 hours), where the SNR margin of the reference function is higher during the day and lower during the night, and also repeats daily. A measure of the interference susceptibility is generated based on the degree of similarity between the measured SNR margin and the reference function.Type: GrantFiled: March 13, 2020Date of Patent: May 2, 2023Assignee: BRITISH TELECOMMUNICATIONS public limited companyInventors: David Rohlfing, Paul Benyon, Phil Bull
-
Publication number: 20220383139Abstract: This invention provides a computer-implemented method of modifying an algorithm operating on a computing system, and a device for implementing said method, the method comprising the steps of: applying the algorithm to a first set of inputs; determining a relevance score for a first input of the first set of inputs based on: a first effectiveness value of the first input, wherein the first effectiveness value represents a contribution of first input to the algorithm, and a first computational cost of the first input, wherein the 1 first computational cost represents the computational resources of using the first input in the algorithm; defining a second set of inputs based on the determined relevance score of the first input; and applying the algorithm to the second set of inputs.Type: ApplicationFiled: September 8, 2020Publication date: December 1, 2022Inventors: Kjeld JENSEN, Stephen CASSIDY, Botond VIRGINAS, David ROHLFING
-
Publication number: 20220158688Abstract: A method is presented of determining whether a digital subscriber line is susceptible to radio frequency interference. The method measures the signal to noise ratio (SNR) margin on the digital subscriber line over a number of 24 hour periods. The measured SNR margin over a given 24 hour period is then compared to a reference function of SNR margin over time (24 hours), where the SNR margin of the reference function is higher during the day and lower during the night, and also repeats daily. A measure of the interference susceptibility is generated based on the degree of similarity between the measured SNR margin and the reference function.Type: ApplicationFiled: March 13, 2020Publication date: May 19, 2022Inventors: David ROHLFING, Paul BENYON, Phil BULL
-
Patent number: 11043987Abstract: The invention relates to a method of estimating an electrical length of a line, which is the signal loss measured at a predetermined frequency such as 1 MHz, compensated for impairments on the line. Firstly, the H log(f) data representing the attenuation plotted against frequency is gathered for the line. Secondly, data transformation is performed on the H log(f) data, such as by dividing by the square root of frequency. This compensates for changes in the loss as a function of frequency, allowing values of the loss from a broader range of frequencies to be used. Thirdly, data spike removal is performed on the transformed data, removing spikes that can arise from a number of factors such as excessive noise. The resulting data is then used to estimate a value for compensated k10.Type: GrantFiled: March 13, 2017Date of Patent: June 22, 2021Assignee: BRITISH TELECOMMUNICATIONS public limited companyInventors: Paul Benyon, David Rohlfing, Ian Horsley
-
Publication number: 20200412409Abstract: The invention is a method of estimating an electrical length of a line, which is the signal loss measured at 1 MHz, compensated for impairments on the line. Firstly, the H log(f) data representing the attenuation plotted against frequency is gathered for the line. Secondly, data transformation is performed on the H log(f) data, preferably by dividing by the square root of frequency. This compensates for changes in the loss as a function of frequency, allowing values of the loss from a broader range of frequencies to be used. Thirdly, data spike removal is performed on the transformed data, removing spikes that can arise from a number of factors such as excessive noise. The resulting data is then used to estimate a value for compensated kl0.Type: ApplicationFiled: March 13, 2017Publication date: December 31, 2020Inventors: Paul BENYON, David ROHLFING, Ian HORSLEY
-
Publication number: 20180343171Abstract: This invention provides an autonomic method for controlling an algorithm on a multi-terminal computing system, wherein the algorithm is configured to analyse diagnostic data for each terminal and an outcome of the analysis is a first action or a second action, and a device for implementing the method, the method comprising the steps of: receiving a first set of data for the multi-terminal computing system; applying the algorithm to the first set of data to classify each terminal in the multi-terminal computing system as being associated with either a first action or second action; re-classifying a first subset of terminals classified as being associated with the first action as being associated with the second action; and applying the first actions, second actions, and reclassified second actions respectively to each terminal in the multi-terminal computing system.Type: ApplicationFiled: December 9, 2016Publication date: November 29, 2018Inventors: Kjeld JENSEN, Botond VIRGINAS, Stephen CASSIDY, Phil BULL, David ROHLFING
-
Patent number: 10021662Abstract: The operation of base stations in a wireless network whose areas of coverage do not overlap are synchronized by taking timing values from mobile units that travel from one area of coverage to another. A base station receiving a timing value from a mobile unit entering its area of coverage adapts its timing value and that of any mobile units in its coverage area, including the newly-arrived mobile unit, to a become a value intermediate between its existing timing value and that indicated by the mobile unit. The use of an intermediate value instability in the system that might result from an inability of the base stations to communicate directly with each other in real time.Type: GrantFiled: January 26, 2016Date of Patent: July 10, 2018Assignee: British Telecommunications Public Limited CompanyInventors: Botond Virginas, David Rohlfing, Phillip Bull, Stephen Cassidy
-
Publication number: 20180041980Abstract: The operation of base stations in a wireless network whose areas of coverage do not overlap are synchronized by taking timing values from mobile units that travel from one area of coverage to another. A base station receiving a timing value from a mobile unit entering its area of coverage adapts its timing value and that of any mobile units in its coverage area, including the newly-arrived mobile unit, to a become a value intermediate between its existing timing value and that indicated by the mobile unit. The use of an intermediate value instability in the system that might result from an inability of the base stations to communicate directly with each other in real time.Type: ApplicationFiled: January 26, 2016Publication date: February 8, 2018Applicant: British Telecommunications Public Limited CompanyInventors: Botond VIRGINAS, David ROHLFING, Phillip BULL, Stephen CASSIDY
-
Publication number: 20070232483Abstract: This invention relates to catalyst compositions, methods, and polymers encompassing at least one Group 4 metallocene compound comprising bridging ?5-cyclopentadienyl-type ligands, typically in combination with at least one cocatalyst, and at least one activator. The compositions and methods disclosed herein provide ethylene polymers with low levels of long chain branching.Type: ApplicationFiled: March 31, 2006Publication date: October 4, 2007Inventors: Qing Yang, Max McDaniel, Michael Jensen, Matthew Thorn, Joel Martin, Youlu Yu, David Rohlfing
-
Publication number: 20070197716Abstract: A polymer composition comprising a density equal to or greater than about 0.947 g/cc, a high load melt index from about 1 g/10 min to about 30 g/10 min, and a tensile natural draw ratio less than about 14167?-12958, where ? is the density (g/cc) of the composition. A polymer composition comprising a tensile natural draw ratio less than about 14167?-12958, where ? is the density (g/cc) of the composition and wherein less than about 1 weight percent of the composition comprises non-polymeric additives.Type: ApplicationFiled: February 22, 2006Publication date: August 23, 2007Inventors: Rajendra Krishnaswamy, Qing Yang, David Rohlfing, Max McDaniel, Kumudini Jayaratne, Jim French
-
Publication number: 20070197752Abstract: This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition comprises contacting an organometal compound, an organoaluminum compound, and a treated solid oxide compound.Type: ApplicationFiled: April 6, 2007Publication date: August 23, 2007Applicant: Phillips Petroleum CompanyInventors: Max McDaniel, Kathy Collins, Gil Hawley, Michael Jensen, Christopher Wittner, Elizabeth Benham, Anthony Eaton, Joel Martin, David Rohlfing, Youlu Yu
-
Publication number: 20070179044Abstract: This invention relates to catalyst compositions, methods, and polymers encompassing at least one Group 4 metallocene compound comprising bridging ?5-cyclopentadienyl-type ligands, typically in combination with at least one cocatalyst, and at least one activator. The compositions and methods disclosed herein provide ethylene polymers with low levels of long chain branching.Type: ApplicationFiled: February 2, 2006Publication date: August 2, 2007Inventors: Qing Yang, Michael Jensen, Joel Martin, Matthew Thorn, Max McDaniel, Youlu Yu, David Rohlfing
-
Publication number: 20060287447Abstract: This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition comprises contacting an organometal compound, an organoaluminum compound, and a treated solid oxide compound.Type: ApplicationFiled: December 21, 2004Publication date: December 21, 2006Inventors: Youlu Yu, Max MacDaniel, Kathy Collins, Gil Hawley, Michael Jensen, Christopher Wittner, Elizabeth Benham, Anthony Eaton, Joel Martin, David Rohlfing
-
Publication number: 20060079656Abstract: The present invention is directed to PE-100 ethylene copolymers and pipe made thereof having a Tabor abrasion between about 0.01 and about 0.001 grams lost/1000 revolutions. These copolymers are formed by contacting ethylene with at least one mono-1-olefin comonomer having from 2 to about 10 carbon atoms per molecule in a reaction zone under polymerization conditions in the presence of a hydrocarbon diluent, a catalyst system, and a cocatalyst. Additionally, the comonomers may be selected from mono-1-olefins having 4 to 10 carbon atoms, such as, 1-hexene, 1-butene, 4-methyl-1-pentene, 1-octene, and 1-decene. Further, these ethylene copolymers may be employed to produce PE-100 pipe having both small diameters and diameters in excess of 42 inches substantially without sagging or other gravitational deformation. Copolymers of ethylene and 1-hexene are disclosed which are used to produce PE-100 pipe.Type: ApplicationFiled: September 15, 2005Publication date: April 13, 2006Inventors: Paul DesLauriers, Max McDaniel, Al Wolfe, Pamela Maeger, William Coutant, David Rohlfing, Steven Secora, William Beaulieu, Elizabeth Benham, David Register
-
Publication number: 20050154159Abstract: The present invention is directed to PE-100 ethylene copolymers and pipe made thereof having a Tabor abrasion between about 0.01 and about 0.001 grams lost/1000 revolutions. These copolymers are formed by contacting ethylene with at least one mono-1-olefin comonomer having from 2 to about 10 carbon atoms per molecule in a reaction zone under polymerization conditions in the presence of a hydrocarbon diluent, a catalyst system, and a cocatalyst. Additionally, the comonomers may be selected from mono-1-olefins having 4 to 10 carbon atoms, such as, 1-hexene, 1-butene, 4-methyl-1-pentene, 1-octene, and 1-decene. Further, these ethylene copolymers may be employed to produce PE-100 pipe having both small diameters and diameters in excess of 42 inches substantially without sagging or other gravitational deformation. Copolymers of ethylene and 1-hexene are disclosed which are used to produce PE-100 pipe.Type: ApplicationFiled: January 9, 2004Publication date: July 14, 2005Inventors: Paul DesLauriers, Max McDaniel, Al Wolfe, Pamela Maeger, William Coutant, David Rohlfing, Steven Secora, William Beaulieu, Elizabeth Benham, David Register