Patents by Inventor John W. Stedman
John W. Stedman 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: 10552565Abstract: Techniques are disclosed for optimizing the pattern density in the circuit layout design of a circuit layer. A layer in circuit design is analyzed to define empty regions that can be filled with fill polygons (referred to hereafter as “fill” regions). Next, a pattern of fill polygons is generated. After the fill polygons have been defined, the layout design for the layer is divided into separate areas or “windows,” and a target density for each window is determined. Once this target density for the window has been determined, the fill polygons required to most closely approach this target density are generated and added to the circuit layout design. This process may be repeated with progressively different (e.g., smaller) fill polygons, until each window meets or exceeds both the specified minimum density and complies with the specified maximum density gradient.Type: GrantFiled: November 22, 2016Date of Patent: February 4, 2020Assignee: Mentor Graphics CorporationInventors: Eugene Anikin, Fedor G. Pikus, Laurence Grodd, David A. Abercrombie, John W. Stedman
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Publication number: 20170147732Abstract: Techniques are disclosed for optimizing the pattern density in the circuit layout design of a circuit layer. A layer in circuit design is analyzed to define empty regions that can be filled with fill polygons (referred to hereafter as “fill” regions). Next, a pattern of fill polygons is generated. After the fill polygons have been defined, the layout design for the layer is divided into separate areas or “windows,” and a target density for each window is determined. Once this target density for the window has been determined, the fill polygons required to most closely approach this target density are generated and added to the circuit layout design. This process may be repeated with progressively different (e.g., smaller) fill polygons, until each window meets or exceeds both the specified minimum density and complies with the specified maximum density gradient.Type: ApplicationFiled: November 22, 2016Publication date: May 25, 2017Applicant: Mentor Graphics CorporationInventors: Eugene Anikin, Fedor G. Pikus, Laurence Grodd, David A. Abercrombie, John W. Stedman
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Patent number: 9652574Abstract: Techniques are disclosed for optimizing the pattern density in the circuit layout design of a circuit layer. A layer in circuit design is analyzed to define empty regions that can be filled with fill polygons (referred to hereafter as “fill” regions). Next, a pattern of fill polygons is generated. After the fill polygons have been defined, the layout design for the layer is divided into separate areas or “windows,” and a target density for each window is determined. Once this target density for the window has been determined, the fill polygons required to most closely approach this target density are generated and added to the circuit layout design. This process may be repeated with progressively different (e.g., smaller) fill polygons, until each window meets or exceeds both the specified minimum density and complies with the specified maximum density gradient.Type: GrantFiled: April 25, 2011Date of Patent: May 16, 2017Assignee: Mentor Graphics CorporationInventors: Eugene Anikin, Fedor G. Pikus, Laurence W. Grodd, David A. Abercrombie, John W. Stedman
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Patent number: 9507902Abstract: Techniques are disclosed for optimizing the pattern density in the circuit layout design of a circuit layer. A layer in circuit design is analyzed to define empty regions that can be filled with fill polygons (referred to hereafter as “fill” regions). Next, a pattern of fill polygons is generated. After the fill polygons have been defined, the layout design for the layer is divided into separate areas or “windows,” and a target density for each window is determined. Once this target density for the window has been determined, the fill polygons required to most closely approach this target density are generated and added to the circuit layout design. This process may be repeated with progressively different (e.g., smaller) fill polygons, until each window meets or exceeds both the specified minimum density and complies with the specified maximum density gradient.Type: GrantFiled: April 25, 2011Date of Patent: November 29, 2016Assignee: Mentor Graphics CorporationInventors: Eugene Anikin, Fedor G. Pikus, Laurence W. Grodd, David A. Abercrombie, John W. Stedman
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Publication number: 20110289471Abstract: Techniques are disclosed for optimizing the pattern density in the circuit layout design of a circuit layer. A layer in circuit design is analyzed to define empty regions that can be filled with fill polygons (referred to hereafter as “fill” regions). Next, a pattern of fill polygons is generated. After the fill polygons have been defined, the layout design for the layer is divided into separate areas or “windows,” and a target density for each window is determined. Once this target density for the window has been determined, the fill polygons required to most closely approach this target density are generated and added to the circuit layout design. This process may be repeated with progressively different (e.g., smaller) fill polygons, until each window meets or exceeds both the specified minimum density and complies with the specified maximum density gradient.Type: ApplicationFiled: April 25, 2011Publication date: November 24, 2011Inventors: Eugene Anikin, Fedor G. Pikus, Laurence W. Grodd, David A. Abercrombie, John W. Stedman
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Publication number: 20100023905Abstract: A layout design for a portion of a microdevice design is partitioned into sections or “bins.” Next, a critical area value is estimated for one or more of the bins. One or more of these estimated bins is then selected for a more detailed analysis. After the estimated bins have been selected, a detailed critical area analysis of the selected bins is performed. Once the actual critical area for each of the estimated bins has been determined, the actual critical areas for selected estimated bins are correlated with those bin's corresponding estimated values. By correlating the actual critical areas of selected estimated bin to those bin's corresponding estimated values, a mapping function can be determined. After the mapping function has been determined, it is applied to the estimated values for each of the remaining bins of the layout design (i.e., the bins for which an actual critical area have not yet been determined) to obtain critical area information for the layout design.Type: ApplicationFiled: February 20, 2009Publication date: January 28, 2010Inventors: Fedor G. Pikus, John W. Stedman
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Publication number: 20090077506Abstract: Techniques are disclosed for optimizing the pattern density in the circuit layout design of a circuit layer. A layer in circuit design is analyzed to define empty regions that can be filled with fill polygons (referred to hereafter as “fill” regions). Next, a pattern of fill polygons is generated. After the fill polygons have been defined, the layout design for the layer is divided into separate areas or “windows,” and a target density for each window is determined. Once this target density for the window has been determined, the fill polygons required to most closely approach this target density are generated and added to the circuit layout design. This process may be repeated with progressively different (e.g., smaller) fill polygons, until each window meets or exceeds both the specified minimum density and complies with the specified maximum density gradient.Type: ApplicationFiled: May 15, 2008Publication date: March 19, 2009Inventors: Eugene Anikin, Fedor Pikus, Laurence Grodd, David A. Abercrombie, John W. Stedman
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Publication number: 20090019351Abstract: A forms engine allows data sharing between customizable on-line forms, such as college admissions applications. Before applying, an applicant opens an account with a third party application servicer. After the applicant completes an application for one institution, the data is saved in a data base and automatically populates fields in subsequent application forms. The form for each institution is created from a form description file. Each form is branded for its institution and forms for different institutions differ in appearance and content so that the presence of the third party servicer is transparent to the applicant. The system is extensible without programming, allowing new applicant attributes to be readily incorporated into the system and allowing the content and appearance of the application to be readily changed by changing the description file.Type: ApplicationFiled: May 16, 2008Publication date: January 15, 2009Applicant: COLLEGENET, INC.Inventors: MICHAEL D. HITCHCOCK, James H. Wolfston, JR., John W. Stedman, Andree J. Hertz, Raymond L. Price
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Patent number: 7376891Abstract: A forms engine allows data sharing between customizable on-line forms, such as college admissions applications. Before applying, an applicant opens an account with a third party application servicer. After the applicant completes an application for one institution, the data is saved in a data base and automatically populates fields in subsequent application forms. The form for each institution is created from a form description file. Each form is branded for its institution and forms for different institutions differ in appearance and content so that the presence of the third party servicer is transparent to the applicant. The system is extensible without programming, allowing new applicant attributes to be readily incorporated into the system and allowing the content and appearance of the application to be readily changed by changing the description file.Type: GrantFiled: September 29, 2003Date of Patent: May 20, 2008Assignee: Collegenet, Inc.Inventors: Michael D. Hitchock, James H. Wolfston, Jr., John W. Stedman, Andreè{grave over ( )} J. Hertz, Raymond L. Price
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Publication number: 20040199863Abstract: A forms engine allows data sharing between customizable on-line forms, such as college admissions applications. Before applying, an applicant opens an account with a third party application servicer. After the applicant completes an application for one institution, the data is saved in a data base and automatically populates fields in subsequent application forms. The form for each institution is created from a form description file. Each form is branded for its institution and forms for different institutions differ in appearance and content so that the presence of the third party servicer is transparent to the applicant.Type: ApplicationFiled: November 14, 2003Publication date: October 7, 2004Inventors: Michael D. Hitchcock, James H. Wolfston, John W. Stedman, Andree J. Hertz, Raymond L. Price
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Publication number: 20030145018Abstract: A forms engine allows data sharing between customizable on-line forms, such as college admissions applications. Before applying, an applicant opens an account with a third party application servicer. After the applicant completes an application for one institution, the data is saved in a data base and automatically populates fields in subsequent application forms. The form for each institution is created from a form description file. Each form is branded for its institution and forms for different institutions differ in appearance and content so that the presence of the third party servicer is transparent to the applicant.Type: ApplicationFiled: September 27, 2002Publication date: July 31, 2003Inventors: Michael D. Hitchcock, James H. Wolfston,, John W. Stedman, Andree J. Hertz, Raymond L. Price
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Patent number: 6460042Abstract: A forms engine allows data sharing between customizable on-line forms, such as college admissions applications. Before applying, an applicant opens an account with a third party application servicer. After the applicant completes an application for one institution, the data is saved in a data base and automatically populates fields in subsequent application forms. The form for each institution is created from a form description file. Each form is branded for its institution and forms for different institutions differ in appearance and content so that the presence of the third party servicer is transparent to the applicant. The system is extensible without programming, allowing new applicant attributes to be readily incorporated into the system and allowing the content and appearance of the application to be readily changed by changing the description file.Type: GrantFiled: November 9, 2001Date of Patent: October 1, 2002Assignee: CollegeNET, Inc.Inventors: Michael D. Hitchcock, James H. Wolfston, Jr., John W. Stedman, Andreè J. Hertz, Raymond L. Price
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Publication number: 20020120628Abstract: A forms engine allows data sharing between customizable on-line forms, such as college admissions applications. Before applying, an applicant opens an account with a third party application servicer. After the applicant completes an application for one institution, the data is saved in a data base and automatically populates fields in subsequent application forms. The form for each institution is created from a form description file. Each form is branded for its institution and forms for different institutions differ in appearance and content so that the presence of the third party servicer is transparent to the applicant.Type: ApplicationFiled: November 9, 2001Publication date: August 29, 2002Inventors: Michael D. Hitchcock, James H. Wolfston,, John W. Stedman, Andree J. Hertz, Raymond L. Price
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Patent number: 6345278Abstract: A forms engine allows data sharing between customizable on-line forms, such as college admissions applications. After an applicant completes an application, the data is saved in a database and automatically populates fields in subsequent application forms. Each form is branded for its institution and forms for different institutions differ in appearance and content so that the presence of the third party servicer is transparent to the applicant. The system is extensible without programming, allowing new applicant attributes to be readily incorporated into the system and allowing the content and appearance of the application to be readily changed by changing the description file. Information stored about each attribute allows the specification of data validation rules and data sharing and grouping rules, as well as dependency rules that permit application page content to depend on applicant's responses on a previous page.Type: GrantFiled: June 3, 1999Date of Patent: February 5, 2002Assignee: CollegeNET, Inc.Inventors: Michael D. Hitchcock, James H. Wolfston, Jr., John W. Stedman, Andreè J. Hertz, Raymond L. Price