Patents by Inventor Derek Wang

Derek Wang 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).

  • Publication number: 20250117683
    Abstract: A method, system, and computer program product for contextually calibrating quantum hardware. One or more contextual calibrations are selected or identified to minimize a contextual cost function of a quantum circuit. Examples of such contextual calibrations include, but are not limited to, tuning the amplitude, tuning the frequency duration, tuning the envelopes, recalibrating the error correction for specific qubits, recalibrating the measurement discriminator (identifies the specific quantum state), etc. The quantum hardware used to perform an execution of the quantum circuit may then be calibrated using the selected or identified contextual calibration(s). By minimizing the contextual cost function, such as via specific calibrations (e.g., tuning frequency duration, tuning amplitude), the performance of a general quantum device for a particular quantum circuit can be improved.
    Type: Application
    Filed: October 6, 2023
    Publication date: April 10, 2025
    Inventors: Seyed Alireza Seif Tabrizi, Derek Wang, Iskandar Sitdikov
  • Publication number: 20250086492
    Abstract: A method, system, and computer program product for runtime quantum error mitigation. Training data, which includes noisy expectation values and target expectation values (noiseless expectation values), is generated. A machine learning model is then trained using the training data to perform quantum error mitigation based on learning the relationships between target and noisy expectation values. That is, such a machine learning model is trained to generate target expectation values based on inputted noisy expectation values. Upon executing a quantum circuit on a quantum computer creating quantum results, quantum error mitigation is performed on the quantum results at runtime using the trained machine learning model. In this manner, there are significant savings in quantum execution time while improving the accuracy of the results in performing quantum error mitigation on quantum results at runtime without additional mitigation circuits.
    Type: Application
    Filed: September 7, 2023
    Publication date: March 13, 2025
    Inventors: Iskandar Sitdikov, Haoran Liao, Seyed Alireza Seif Tabrizi, Zlatko Kristev Minev, Derek Wang
  • Patent number: 12198013
    Abstract: A method, system and computer program product for calibrating a quantum error mitigation technique with appropriate settings. Calibrations of the quantum error mitigation technique corresponding to combinations of noise factors and extrapolation functions that when applied to quantum circuits that represent the target quantum circuit achieve an expectation value that is close to a zero-noise value within a threshold degree of accuracy are saved. A calibration (combination of noise factors and an extrapolation function) is then selected from the saved calibrations based on the depth of the target quantum circuit. The quantum error mitigation technique is then calibrated based on the selected calibration. The calibrated quantum error mitigation technique is then performed on the target quantum circuit. In this manner, a quantum error mitigation technique is automatically calibrated with the appropriate settings to achieve a zero-noise value by the target quantum circuit without requiring multiple iterations.
    Type: Grant
    Filed: July 7, 2023
    Date of Patent: January 14, 2025
    Assignee: International Business Machines Corporation
    Inventors: Derek Wang, Ritajit Majumdar, Pedro Rivero Ramirez
  • Publication number: 20250013907
    Abstract: A method, system and computer program product for calibrating a quantum error mitigation technique with appropriate settings. Calibrations of the quantum error mitigation technique corresponding to combinations of noise factors and extrapolation functions that when applied to quantum circuits that represent the target quantum circuit achieve an expectation value that is close to a zero-noise value within a threshold degree of accuracy are saved. A calibration (combination of noise factors and an extrapolation function) is then selected from the saved calibrations based on the depth of the target quantum circuit. The quantum error mitigation technique is then calibrated based on the selected calibration. The calibrated quantum error mitigation technique is then performed on the target quantum circuit. In this manner, a quantum error mitigation technique is automatically calibrated with the appropriate settings to achieve a zero-noise value by the target quantum circuit without requiring multiple iterations.
    Type: Application
    Filed: July 7, 2023
    Publication date: January 9, 2025
    Inventors: Derek Wang, Ritajit Majumdar, Pedro Rivero Ramirez
  • Patent number: 10503671
    Abstract: The present teaching, which includes methods, systems and computer-readable media, relates to controlling access to a shared resource including, for example, a memory unit. The disclosed techniques may include receiving a configuration parameter relating to a relationship between read and write requests that are initiated by concurrent processes and stored in read and write queues, respectively, for accessing the shared resource. The techniques may further include determining, based on the configuration parameter, whether to allow a read request or a write request to be executed using the shared resource, and providing to a concurrent process access to the shared resource for executing the allowed read or write request. Further, upon a completion of executing the allowed read or write request, a return token on a return token queue different from the read and write queues may be received, the return token corresponding to the allowed read or write request.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: December 10, 2019
    Assignee: Oath Inc.
    Inventors: Jay Hobson, Derek Wang
  • Patent number: 10203995
    Abstract: Methods and/or systems are provided that may be utilized to read from or write to a resource, such as a shared memory, for example.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: February 12, 2019
    Assignee: Excalibur IP, LLC
    Inventors: Jay Hobson, Derek Wang
  • Patent number: 10145282
    Abstract: A method for improving automobile exhaust is disclosed. A catalytic converter is cooled down. The outer surface of the catalytic converter is covered with an infrared thermal radiation material, or black anodizing is carried out on the outer surface. Therefore, the surface thermal radiation of the catalytic converter is improved, and the catalytic converter can be kept being operated under a normal working temperature.
    Type: Grant
    Filed: May 25, 2015
    Date of Patent: December 4, 2018
    Assignee: DONGGUAN CITY MAO SHENG ELECTRONIC ENTERPRISES CO., LTD
    Inventor: Derek Wang
  • Publication number: 20180191706
    Abstract: The present teaching, which includes methods, systems and computer-readable media, relates to controlling access to a shared resource including, for example, a memory unit. The disclosed techniques may include receiving a configuration parameter relating to a relationship between read and write requests that are initiated by concurrent processes and stored in read and write queues, respectively, for accessing the shared resource. The techniques may further include determining, based on the configuration parameter, whether to allow a read request or a write request to be executed using the shared resource, and providing to a concurrent process access to the shared resource for executing the allowed read or write request. Further, upon a completion of executing the allowed read or write request, a return token on a return token queue different from the read and write queues may be received, the return token corresponding to the allowed read or write request.
    Type: Application
    Filed: December 29, 2016
    Publication date: July 5, 2018
    Inventors: Jay Hobson, Derek Wang
  • Publication number: 20170211447
    Abstract: A method for improving automobile exhaust is disclosed. A catalytic converter is cooled down. The outer surface of the catalytic converter is covered with an infrared thermal radiation material, or black anodizing is carried out on the outer surface. Therefore, the surface thermal radiation of the catalytic converter is improved, and the catalytic converter can be kept being operated under a normal working temperature.
    Type: Application
    Filed: May 25, 2015
    Publication date: July 27, 2017
    Inventor: Derek WANG
  • Publication number: 20150149737
    Abstract: Methods and/or systems are provided that may be utilized to read from or write to a resource, such as a shared memory, for example.
    Type: Application
    Filed: November 22, 2013
    Publication date: May 28, 2015
    Applicant: YAHOO! INC.
    Inventors: Jay Hobson, Derek Wang
  • Patent number: 8103494
    Abstract: A management system and method. The system comprises at least one delivery request, a plurality of equipment and a simulator. The delivery request indicates a plurality of devices, each comprising a respective quantity. The equipment tests the devices, each equipment comprising an equipment configuration. The simulator retrieves device configuration requirements of respective devices, maps the devices to the equipment according to the respective device configuration requirements and the equipment configurations to obtain a mapping result, and calculates at least one performance index based on the mapping result and the quantity of respective devices.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: January 24, 2012
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Derek Wang, Kun-Chi Liu, Ta-Chin Lin
  • Publication number: 20090215438
    Abstract: A method for facilitating wireless communication of a client device with a destination telecommunication device is provided. The method includes receiving a first telecommunication signal from the client device by a server managed by an enterprise. The method also includes analyzing the first telecommunication signal to determine if a less expensive telecommunication option is available. The method further includes, the server sending a callback signal to the client device if the less expensive telecommunication option is available. The method yet also includes accepting the callback signal via a non-human initiated response by the client device, thereby establishing a telecommunication connection between the client device and the server. The method yet further includes sending a second telecommunication signal by the server to the destination telecommunication device.
    Type: Application
    Filed: February 23, 2008
    Publication date: August 27, 2009
    Inventors: Ajay Mittal, Prasad Rao, Srinivasa Athuluru, Rajesh Palakkal, Josh Marder, Varad Seshadri, Marc Solsona-Palomar, Derek Wang
  • Patent number: 7546125
    Abstract: A method for performing a handoff for a mobile device from a first radio station to a second radio station. The method includes buffering a first media data set that is received through the first radio station. The method also includes cross-correlating a tail portion of the first media data set and a head portion of a second media data set to generate a cross-correlated media data set, if the second media data set is received through the second radio station. The method further includes synthesizing, using a modeled portion of the first media data set, a synthesized media data set, if no media data is received through the second radio station within a threshold. The method further includes extending the first media data set to generate an extended media data set, if no media data is received through the second radio station at the threshold.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: June 9, 2009
    Assignee: DiVitas Networks, Inc.
    Inventors: Vikas Sharma, Snehal Karia, Derek Wang, Srinivasa Athuluru, Marc Solsona-Palomar, Josh Marder
  • Publication number: 20090016333
    Abstract: A packet communication device is disclosed. The packet communication device may include a detector configured to detect a characterized content in incoming packets received by the packet communication device. The packet communication device may further include a play-out control configured to perform an adjustment of the incoming packets to produce adjusted packets and output the adjusted packets, if the detector has detected the characterized content in the incoming packets.
    Type: Application
    Filed: May 30, 2007
    Publication date: January 15, 2009
    Inventors: Derek Wang, Vikas Sharma, Varad Seahadri, Snehal Karia
  • Publication number: 20080317241
    Abstract: An apparatus for canceling a signal is disclosed. The apparatus may include an identification code (ID code) generator configured to generate an ID code. The apparatus may also include an ID code injector configured to inject the ID code into at least one of the signal and a processed signal to produce a convolved signal. The processed signal is resulted from a processing of the signal. The apparatus may further include an ID code detector configured to detect at least one of the convolved signal, a transformed signal, and a transformation of the convolved signal. The transformed signal is resulted from the transformation of the convolved signal. The apparatus may further include an arithmetic function configured to remove at least one of the convolved signal and the transformed signal.
    Type: Application
    Filed: May 30, 2007
    Publication date: December 25, 2008
    Inventors: Derek Wang, Vikas Sharma
  • Publication number: 20070207804
    Abstract: A method for performing a handoff for a mobile device from a first radio station to a second radio station. The method includes buffering a first media data set that is received through the first radio station. The method also includes cross-correlating a tail portion of the first media data set and a head portion of a second media data set to generate a cross-correlated media data set, if the second media data set is received through the second radio station. The method further includes synthesizing, using a modeled portion of the first media data set, a synthesized media data set, if no media data is received through the second radio station within a threshold. The method further includes extending the first media data set to generate an extended media data set, if no media data is received through the second radio station at the threshold.
    Type: Application
    Filed: October 2, 2006
    Publication date: September 6, 2007
    Inventors: Vikas Sharma, Snehal Karia, Derek Wang, Srinivasa Athuluru, Marc Solsona-Palomar, Josh Marder
  • Publication number: 20070128892
    Abstract: A management system and method. The system comprises at least one delivery request, a plurality of equipment and a simulator. The delivery request indicates a plurality of devices, each comprising a respective quantity. The equipment tests the devices, each equipment comprising an equipment configuration. The simulator retrieves device configuration requirements of respective devices, maps the devices to the equipment according to the respective device configuration requirements and the equipment configurations to obtain a mapping result, and calculates at least one performance index based on the mapping result and the quantity of respective devices.
    Type: Application
    Filed: December 2, 2005
    Publication date: June 7, 2007
    Inventors: Derek Wang, Kun-Chi Liu, Ta-Chin Lin
  • Publication number: 20070091848
    Abstract: A method for reducing data loss when a client device performs a handoff from a first radio station to a second radio station. The method includes detecting imminence of the handoff using one or more criteria. The method also includes buffering incoming data upon the imminence of the handoff to generate buffered incoming data, the incoming data being addressed to the client device. The method further includes transmitting the buffered incoming data to the client device through the second radio station if the handoff is completed and if the buffered incoming data is not discarded.
    Type: Application
    Filed: October 2, 2006
    Publication date: April 26, 2007
    Inventors: Snehal Karia, Derek Wang, Srinivasa Athuluru, Rajesh Palakkal, Marc Solsona-Palomar, Ajay Mittal, Prasad Rao, Varad Seshadri, Josh Marder
  • Publication number: 20070094374
    Abstract: A system for facilitating wireless communication. The system includes a client device configured to operate in a plurality of networks. The system also includes a server coupled to the plurality of networks and managed by an enterprise. The server is configured to store connectivity information of the client device, to route incoming media data addressed to the client device using the connectivity information of the client device, and to route outgoing media data originated from the client device through the server. The connectivity information pertains to connectivity of the client device with at least one network of the plurality of networks.
    Type: Application
    Filed: October 2, 2006
    Publication date: April 26, 2007
    Inventors: Snehal Karia, Ajay Mittal, Prasad Rao, Srinivasa Athuluru, Rajesh Palakkal, Josh Marder, Varad Seshadri, Marc Solsona-Palomar, Derek Wang