Patents by Inventor Georg Rudolph
Georg Rudolph 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: 11775002Abstract: A first oscillator signal and a second oscillator signal are transmitted to a processing unit. The first oscillator signal has a finite frequency or phase offset relative to the second oscillator signal. A first clock signal that is derived from the first oscillator signal is selected as a primary clock to clock the processing unit. A second clock signal derived from the second oscillator signal is aligned to the first clock signal. If a fault is detected on the first clock signal, the second clock signal is selected as the primary clock to clock the processing unit. Upon being selected as the primary clock, the phase of the second is stretched by one fixed phase for one clock cycle.Type: GrantFiled: July 27, 2021Date of Patent: October 3, 2023Assignee: International Business Machines CorporationInventors: Matthew James Paschal, Daniel M. Dreps, Glen A. Wiedemeier, Bruce George Rudolph, James Strom
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Patent number: 11621775Abstract: An apparatus for mitigating polarization dependent loss (PDL) in an optical signal-to-noise ratio (OSNR) of a modulated optical signal is disclosed. The apparatus may comprise a spectrum analyzer to measure an optical power spectrum of a modulated optical signal. The apparatus may also comprise a measuring unit to select a first portion of the modulated optical signal and a second portion of the modulated optical signal, where each of the first and second portions of the modulated optical signals may include an independent noise distribution indicative of PDL, and measure a time-varying parameter of the first and second portions. The apparatus may also include a signal processor to PDL in an OSNR by transforming any elliptical polarization associated with the independent noise distribution into a ball polarization, determining a correlation between time-varying parameters of the first and second portions, and calculating a PDL mitigated OSNR.Type: GrantFiled: September 17, 2020Date of Patent: April 4, 2023Assignee: VIAVI SOLUTIONS INC.Inventor: Georg Rudolph
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Publication number: 20230035405Abstract: A first oscillator signal and a second oscillator signal are transmitted to a processing unit. The first oscillator signal has a finite frequency or phase offset relative to the second oscillator signal. A first clock signal that is derived from the first oscillator signal is selected as a primary clock to clock the processing unit. A second clock signal derived from the second oscillator signal is aligned to the first clock signal. If a fault is detected on the first clock signal, the second clock signal is selected as the primary clock to clock the processing unit. Upon being selected as the primary clock, the phase of the second is stretched by one fixed phase for one clock cycle.Type: ApplicationFiled: July 27, 2021Publication date: February 2, 2023Inventors: Matthew James Paschal, Daniel M. Dreps, Glen A. Wiedemeier, Bruce George Rudolph, James Strom
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Publication number: 20210075507Abstract: An apparatus for mitigating polarization dependent loss (PDL) in an optical signal-to-noise ratio (OSNR) of a modulated optical signal is disclosed. The apparatus may comprise a spectrum analyzer to measure an optical power spectrum of a modulated optical signal. The apparatus may also comprise a measuring unit to select a first portion of the modulated optical signal and a second portion of the modulated optical signal, where each of the first and second portions of the modulated optical signals may include an independent noise distribution indicative of PDL, and measure a time-varying parameter of the first and second portions. The apparatus may also include a signal processor to PDL in an OSNR by transforming any elliptical polarization associated with the independent noise distribution into a ball polarization, determining a correlation between time-varying parameters of the first and second portions, and calculating a PDL mitigated OSNR.Type: ApplicationFiled: September 17, 2020Publication date: March 11, 2021Applicant: VIAVI SOLUTIONS INC.Inventor: Georg Rudolph
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Patent number: 10897225Abstract: A steady-state voltage on an oscillator output can be detected, independent of control signals received from other circuitry, by an oscillator failure detection circuit (OFDC) fabricated within an integrated circuit (IC). The OFDC can, in response to detecting the steady-state voltage, output an oscillator failure signal on a reference fail output. The OFDC can receive, with a first and a second buffer, an oscillator output signal from an oscillator output. Through the use of an electrically interconnected, pull-down device, pull-up network, pull-up device, pull-down network, Schmitt trigger, inverting Schmitt trigger and OR-gate, the OFDC can drive the oscillator failure signal onto an output of the OR-gate electrically connected to a reference fail output (RFO).Type: GrantFiled: September 26, 2019Date of Patent: January 19, 2021Assignee: International Business Machines CorporationInventors: James Strom, Matthew James Paschal, Bruce George Rudolph, Daniel M. Dreps
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Patent number: 10812183Abstract: An apparatus for mitigating polarization dependent loss (PDL) in an optical signal-to-noise ratio (OSNR) of a modulated optical signal is disclosed. The apparatus may comprise a spectrum analyzer to measure an optical power spectrum of a modulated optical signal. The apparatus may also comprise a measuring unit to select a first portion of the modulated optical signal and a second portion of the modulated optical signal, where each of the first and second portions of the modulated optical signals may include an independent noise distribution indicative of PDL, and measure a time-varying parameter of the first and second portions. The apparatus may also include a signal processor to PDL in an OSNR by transforming any elliptical polarization associated with the independent noise distribution into a ball polarization, determining a correlation between time-varying parameters of the first and second portions, and calculating a PDL mitigated OSNR.Type: GrantFiled: February 15, 2019Date of Patent: October 20, 2020Assignee: VIAVI SOLUTIONS INC.Inventor: Georg Rudolph
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Publication number: 20200266887Abstract: An apparatus for mitigating polarization dependent loss (PDL) in an optical signal-to-noise ratio (OSNR) of a modulated optical signal is disclosed. The apparatus may comprise a spectrum analyzer to measure an optical power spectrum of a modulated optical signal. The apparatus may also comprise a measuring unit to select a first portion of the modulated optical signal and a second portion of the modulated optical signal, where each of the first and second portions of the modulated optical signals may include an independent noise distribution indicative of PDL, and measure a time-varying parameter of the first and second portions. The apparatus may also include a signal processor to PDL in an OSNR by transforming any elliptical polarization associated with the independent noise distribution into a ball polarization, determining a correlation between time-varying parameters of the first and second portions, and calculating a PDL mitigated OSNR.Type: ApplicationFiled: February 15, 2019Publication date: August 20, 2020Applicant: VIAVI SOLUTIONS INC.Inventor: Georg RUDOLPH
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Patent number: 10187483Abstract: An online system regulates access to information about a user by associating an online system user identifier with a unique application-specific user identifier used by an application to identify the user. Each application communicating with the online system and installed by the user is associated with a unique application-specific user identifier that is associated with the user's online system user identifier. For example, information identifying an installed application and an application-specific user identifier are associated with the user's online system user identifier when the user installs the application. When communicating about a user with an installed application associated with the user, the online system identifies the user via the application-specific identifier associated with the installed application and may provide limited information associated with the online system user identifier associated with the application-specific identifier.Type: GrantFiled: August 12, 2014Date of Patent: January 22, 2019Assignee: Facebook, Inc.Inventors: Benjamin Golub, Tirunelveli R. Vishwanath, Arthur George Rudolph
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Publication number: 20160050287Abstract: An online system regulates access to information about a user by associating an online system user identifier with a unique application-specific user identifier used by an application to identify the user. Each application communicating with the online system and installed by the user is associated with a unique application-specific user identifier that is associated with the user's online system user identifier. For example, information identifying an installed application and an application-specific user identifier are associated with the user's online system user identifier when the user installs the application. When communicating about a user with an installed application associated with the user, the online system identifies the user via the application-specific identifier associated with the installed application and may provide limited information associated with the online system user identifier associated with the application-specific identifier.Type: ApplicationFiled: August 12, 2014Publication date: February 18, 2016Inventors: Benjamin Golub, Tirunelveli R. Vishwanath, Arthur George Rudolph
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Patent number: 9142937Abstract: A lasing wavelength of a laser diode is determined by applying a forward current to the p-n junction of the laser diode and measuring a voltage across the p-n junction. The lasing wavelength can be determined by performing a simple wavelength calibration of the laser diode. This allows one to stabilize the lasing wavelength, and also to use the laser diode as a reference wavelength source.Type: GrantFiled: March 6, 2015Date of Patent: September 22, 2015Assignee: JDS Uniphase CorporationInventors: Eberhard Löcklin, Georg Rudolph, Jörg Stooss
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Publication number: 20150185078Abstract: A lasing wavelength of a laser diode is determined by applying a forward current to the p-n junction of the laser diode and measuring a voltage across the p-n junction. The lasing wavelength can be determined by performing a simple wavelength calibration of the laser diode. This allows one to stabilize the lasing wavelength, and also to use the laser diode as a reference wavelength source.Type: ApplicationFiled: March 6, 2015Publication date: July 2, 2015Inventors: Eberhard LÖCKLIN, Georg RUDOLPH, Jörg STOOSS
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Patent number: 9032290Abstract: A social networking system includes a mechanism for integrating user actions on objects outside of the social networking system in the social graph. External system operators include widgets that, when executed by user devices, record user interactions that correspond to a defined structure of actions and objects. Third party operators utilize a tool provided by the social networking system to define the structure of actions and objects. External actions are recorded by the social networking system for publishing to the social graph.Type: GrantFiled: September 21, 2011Date of Patent: May 12, 2015Assignee: Facebook, Inc.Inventors: Brynn Shepherd, Carl Philip Sjogreen, Vladimir Fedorov, Naitik Shah, Edward Kenneth O'Neil, Lars Eilstrup Rasmussen, Paul Tarjan, Michael Steven Vernal, Arthur George Rudolph
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Patent number: 8976826Abstract: A lasing wavelength of a laser diode is determined by applying a forward current to the p-n junction of the laser diode and measuring a voltage across the p-n junction. The lasing wavelength can be determined by performing a simple wavelength calibration of the laser diode. This allows one to stabilize the lasing wavelength, and also to use the laser diode as a reference wavelength source.Type: GrantFiled: May 30, 2012Date of Patent: March 10, 2015Assignee: JDS Uniphase CorporationInventors: Eberhard Löcklin, Georg Rudolph, Jörg Stooss
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Patent number: 8793593Abstract: A social networking system includes a mechanism for integrating user actions on objects outside of the social networking system in the social graph. For example, streaming music on external systems may be integrated into the user experience on the social networking system. Third-party developers, in addition to administrators of the social networking system, may define objects and actions that enable integration of external music sources to be played and controlled using the social networking system while also providing socially relevant information to other users of the social networking system. Actions and objects recorded from these external user interactions are structured to enable aggregation and structured querying, which enables data visualizations of the information discoverable on the social graph. In this way, interesting information about users' actions outside of the domain of the social networking system may be shared and compared with other users on the social networking system.Type: GrantFiled: September 21, 2011Date of Patent: July 29, 2014Assignee: Facebook, Inc.Inventors: Lars Eilstrup Rasmussen, Carl Philip Sjogreen, Vladimir Fedorov, Casey Maloney Rosales Muller, Austin Daniel Haugen, Edward Kenneth O'Neil, Naitik Shah, Paul Tarjan, Michael Steven Vernal, Arthur George Rudolph
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Publication number: 20130073979Abstract: A social networking system includes a mechanism for integrating user actions on objects outside of the social networking system in the social graph. External system operators include widgets that, when executed by user devices, record user interactions that correspond to a defined structure of actions and objects. Third party operators utilize a tool provided by the social networking system to define the structure of actions and objects. External actions are recorded by the social networking system for publishing to the social graph.Type: ApplicationFiled: September 21, 2011Publication date: March 21, 2013Inventors: Brynn Shepherd, Carl Philip Sjogreen, Vladimir Fedorov, Naitik Shah, Edward Kenneth O'Neil, Lars Eilstrup Rasmussen, Paul Tarjan, Michael Steven Vernal, Arthur George Rudolph
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Publication number: 20120307242Abstract: A lasing wavelength of a laser diode is determined by applying a forward current to the p-n junction of the laser diode and measuring a voltage across the p-n junction. The lasing wavelength can be determined by performing a simple wavelength calibration of the laser diode. This allows one to stabilize the lasing wavelength, and also to use the laser diode as a reference wavelength source.Type: ApplicationFiled: May 30, 2012Publication date: December 6, 2012Inventors: Eberhard Löcklin, George Rudolph, Jörg Stooss
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Patent number: 7756369Abstract: A method and apparatus is disclosed for measurement and monitoring of in-band optical signal to noise ratio (OSNR). A two channel optical spectrum analyzer (OSA) is advantageously applied in acquiring wavelength division multiplex (WDM) signal data after it has been split according to polarization, then deriving the in-band OSNR from acquired data due to its narrow bandwidth, selective spectral shape, and capability to analyze two components of a polarized signal simultaneously. The in-band OSNR can be measured without interrupting optical transmission traffic in the network.Type: GrantFiled: November 29, 2007Date of Patent: July 13, 2010Assignee: Acterna LLCInventors: Georg Rudolph, Eberhard Loecklin
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Publication number: 20080124076Abstract: A method and apparatus is disclosed for measurement and monitoring of in-band optical signal to noise ratio (OSNR). A two channel optical spectrum analyzer (OSA) is advantageously applied in acquiring wavelength division multiplex (WDM) signal data after it has been split according to polarization, then deriving the in-band OSNR from acquired data due to its narrow bandwidth, selective spectral shape, and capability to analyze two components of a polarized signal simultaneously. The in-band OSNR can be measured without interrupting optical transmission traffic in the network.Type: ApplicationFiled: November 29, 2007Publication date: May 29, 2008Applicant: ACTERNA LLCInventors: Georg Rudolph, Eberhard Loecklin
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Patent number: 6448835Abstract: An apparatus and method for providing a gated output timing signal within a gated clock distribution tree. In accordance with the present invention, a gated clock splitter includes a timing signal input and a combinatorial logic block coupled to the timing signal input that generates a gated timing signal. A gating signal input is coupled to the combinatorial logic block for selectively enabling and disabling the output from the combinatorial logic block. A gate control circuit is coupled to the gating signal input for providing a gate signal to the combinatorial logic block, wherein the gate control circuit provides a full-cycle path for said gate signal to the gating signal input.Type: GrantFiled: September 6, 2001Date of Patent: September 10, 2002Assignee: International Business Machines CorporationInventors: Steven Michael Douskey, Bruce George Rudolph
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Patent number: 6232806Abstract: An apparatus and method for distributing a clock signal within circuitry disposed on a number of separate system cards includes a first system card that generates a reference clock signal representative of a fixed delay of a system clock signal. A number of variable clock signals are produced using the system clock signal. Each of a number of system cards separate from the first system card receive one of the variable clock signals. A delay associated with the reference clock signal is typically longer than a delay associated with each of the variable clock signals. The phase of each of the variable clock signals is adjusted to a substantially in-phase relationship with respect to the reference clock signal in response to a phase difference between the reference clock signal an output signal received from each of the separate system cards.Type: GrantFiled: October 21, 1998Date of Patent: May 15, 2001Assignee: International Business Machines CorporationInventors: Dana Marie Woeste, James David Strom, Bruce George Rudolph