Patents by Inventor Suo Ming Pu
Suo Ming Pu 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: 10528699Abstract: A method, system, and computer program product for enhancing integrated circuit noise performance. The method is for arranging target wires in a target region, the method including: for each wire in the target wires, obtaining a signal jump interval with respect to each of the other wires in the target wires, wherein the signal jump interval of one wire with respect to a further wire is a time interval between occurrence of signal jump on the one wire and occurrence of signal jump on the further wire; calculating a corresponding time influence factor based on the signal jump interval, wherein the time influence factor is a decreasing function of the signal jump interval; and arranging the target wires in the target region based on the time influence factor. Coupling noise between wires may be reduced according to the technical solution of an embodiment of the present invention.Type: GrantFiled: February 1, 2019Date of Patent: January 7, 2020Assignee: International Business Machines CorporationInventors: Xia Li, Suo Ming Pu, Xiao Feng Tang, Bo Yu
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Patent number: 10528698Abstract: A method, system, and computer program product for enhancing integrated circuit noise performance. The method is for arranging target wires in a target region, the method including: for each wire in the target wires, obtaining a signal jump interval with respect to each of the other wires in the target wires, wherein the signal jump interval of one wire with respect to a further wire is a time interval between occurrence of signal jump on the one wire and occurrence of signal jump on the further wire; calculating a corresponding time influence factor based on the signal jump interval, wherein the time influence factor is a decreasing function of the signal jump interval; and arranging the target wires in the target region based on the time influence factor. Coupling noise between wires may be reduced according to the technical solution of an embodiment of the present invention.Type: GrantFiled: February 1, 2019Date of Patent: January 7, 2020Assignee: International Business Machines CorporationInventors: Xia Li, Suo Ming Pu, Xiao Feng Tang, Bo Yu
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Publication number: 20190163864Abstract: A method, system, and computer program product for enhancing integrated circuit noise performance. The method is for arranging target wires in a target region, the method including: for each wire in the target wires, obtaining a signal jump interval with respect to each of the other wires in the target wires, wherein the signal jump interval of one wire with respect to a further wire is a time interval between occurrence of signal jump on the one wire and occurrence of signal jump on the further wire; calculating a corresponding time influence factor based on the signal jump interval, wherein the time influence factor is a decreasing function of the signal jump interval; and arranging the target wires in the target region based on the time influence factor. Coupling noise between wires may be reduced according to the technical solution of an embodiment of the present invention.Type: ApplicationFiled: February 1, 2019Publication date: May 30, 2019Inventors: Xia Li, Suo Ming Pu, Xiao Feng Tang, Bo Yu
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Publication number: 20190163865Abstract: A method, system, and computer program product for enhancing integrated circuit noise performance. The method is for arranging target wires in a target region, the method including: for each wire in the target wires, obtaining a signal jump interval with respect to each of the other wires in the target wires, wherein the signal jump interval of one wire with respect to a further wire is a time interval between occurrence of signal jump on the one wire and occurrence of signal jump on the further wire; calculating a corresponding time influence factor based on the signal jump interval, wherein the time influence factor is a decreasing function of the signal jump interval; and arranging the target wires in the target region based on the time influence factor. Coupling noise between wires may be reduced according to the technical solution of an embodiment of the present invention.Type: ApplicationFiled: February 1, 2019Publication date: May 30, 2019Inventors: Xia Li, Suo Ming Pu, Xiao Feng Tang, Bo Yu
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Patent number: 10242149Abstract: A method, system, and computer program product for enhancing integrated circuit noise performance. The method is for arranging target wires in a target region, the method including: for each wire in the target wires, obtaining a signal jump interval with respect to each of the other wires in the target wires, wherein the signal jump interval of one wire with respect to a further wire is a time interval between occurrence of signal jump on the one wire and occurrence of signal jump on the further wire; calculating a corresponding time influence factor based on the signal jump interval, wherein the time influence factor is a decreasing function of the signal jump interval; and arranging the target wires in the target region based on the time influence factor. Coupling noise between wires may be reduced according to the technical solution of an embodiment of the present invention.Type: GrantFiled: December 14, 2015Date of Patent: March 26, 2019Assignee: International Business Machines CorporationInventors: Xia Li, Suo Ming Pu, Xiao Feng Tang, Bo Yu
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Publication number: 20160180014Abstract: A method, system, and computer program product for enhancing integrated circuit noise performance. The method is for arranging target wires in a target region, the method including: for each wire in the target wires, obtaining a signal jump interval with respect to each of the other wires in the target wires, wherein the signal jump interval of one wire with respect to a further wire is a time interval between occurrence of signal jump on the one wire and occurrence of signal jump on the further wire; calculating a corresponding time influence factor based on the signal jump interval, wherein the time influence factor is a decreasing function of the signal jump interval; and arranging the target wires in the target region based on the time influence factor. Coupling noise between wires may be reduced according to the technical solution of an embodiment of the present invention.Type: ApplicationFiled: December 14, 2015Publication date: June 23, 2016Inventors: Xia Li, Suo Ming Pu, Xiao Feng Tang, Bo Yu
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Patent number: 8453085Abstract: Estimating the latency time of the clock tree of an ASIC including: providing a netlist and a placement related to the clock tree of the ASIC; extracting a number of the load timing devices connected by the clock tree according to the netlist related to the clock tree; extracting a physical distribution area of the load timing devices connected by the clock tree according to the placement related to the clock tree; estimating a latency time of the clock tree according to the relationship between the number of the load timing devices, the physical distribution area of the load timing devices and latency time of the clock tree in design data related to the ASIC design.Type: GrantFiled: February 22, 2011Date of Patent: May 28, 2013Assignee: International Business Machines CorporationInventors: Liang Ge, Gong Qiong Li, Suo Ming Pu, Chen Xu
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Patent number: 8302048Abstract: The present invention discloses a method and apparatus for detecting timing constraint conflicts, the method comprising: receiving a timing constraint file; taking all test points in the timing constraint file as nodes, determining directed edges between the nodes and weights of the directed edges according to timing constraints relevant to the test points in the timing constraint file to establish a directed graph; searching for all directed cycles of the directed graph; and for each directed cycle, if the sum of the weights of the directed edges constituting the directed cycle satisfies a required condition, determining that a timing constraint conflict exists among the test points and the timing constraints constituting the directed cycle. The method and apparatus can automatically detect timing constraint conflicts with one hundred percent to reduce design turnaround time and engineer resources in ASIC projects.Type: GrantFiled: April 26, 2010Date of Patent: October 30, 2012Assignee: International Business Machines CorporationInventors: Suo Ming Pu, Hong Hua Song, Hong Wei Dai
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Publication number: 20120047478Abstract: Estimating the latency time of the clock tree of an ASIC including: providing a netlist and a placement related to the clock tree of the ASIC; extracting a number of the load timing devices connected by the clock tree according to the netlist related to the clock tree; extracting a physical distribution area of the load timing devices connected by the clock tree according to the placement related to the clock tree; estimating a latency time of the clock tree according to the relationship between the number of the load timing devices, the physical distribution area of the load timing devices and latency time of the clock tree in design data related to the ASIC design.Type: ApplicationFiled: February 22, 2011Publication date: February 23, 2012Applicant: International Business Machines CorporationInventors: Liang Ge, Gong Qiong Li, Suo Ming Pu, Chen Xu
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Publication number: 20100281447Abstract: The present invention discloses a method and apparatus for detecting timing constraint conflicts, the method comprising: receiving a timing constraint file; taking all test points in the timing constraint file as nodes, determining directed edges between the nodes and weights of the directed edges according to timing constraints relevant to the test points in the timing constraint file to establish a directed graph; searching for all directed cycles of the directed graph; and for each directed cycle, if the sum of the weights of the directed edges constituting the directed cycle satisfies a required condition, determining that a timing constraint conflict exists among the test points and the timing constraints constituting the directed cycle. The method and apparatus can automatically detect timing constraint conflicts with one hundred percent to reduce design turnaround time and engineer resources in ASIC projects.Type: ApplicationFiled: April 26, 2010Publication date: November 4, 2010Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Suo Ming Pu, Hong Hua Song, Hong Wei Dai