Patents by Inventor Y. Zhang

Y. Zhang 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: 20130246307
    Abstract: The present invention provides a flexible pricing method for providing pricing adjustments for a product in a deal in response to price variations in selected indexes. The method comprises: designating an index for the product wherein said index has a published index value; and computing a price for said product based on said published index value. The invention also provides for periodically re-pricing deals with index-based pricing terms.
    Type: Application
    Filed: February 8, 2013
    Publication date: September 19, 2013
    Applicant: Vendavo, Inc.
    Inventors: Shankar Sundaram, Ramesh Seshadri, Shannon Y. Zhang, Sri Raghupathy, Simon C. Lee, Rafael A. Gonzalez-Caloni
  • Publication number: 20130159759
    Abstract: Embodiments of an apparatus for signal conditioning, a serial data interface, and a method for a programmable delay filter are disclosed. In an embodiment of an apparatus for signal conditioning, a wave shaping circuit has a precursor signal, a post cursor signal, and a main signal combined to provide an output signal. The precursor signal, the post cursor signal, and the main signal are provided for combination independently of a clock signal. The main signal is delayed relative to the precursor signal, and the post cursor signal is delayed relative to the main signal.
    Type: Application
    Filed: December 14, 2011
    Publication date: June 20, 2013
    Inventors: Tony Yeung, Michael Y. Zhang
  • Patent number: 8412696
    Abstract: A system arranged to search machine data to generate reports in real time. A search query is provided that includes a plurality of search commands. The search query is parsed to form a main search query and a remote search query. Machine data is collected from remote data sources and evaluated against one of the main and remote search queries to generate a set of search results. The main search query is then evaluated against at least a partial set of the search result to generate at least one report regarding the collected machine data. Each report can be provided for display to a user.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: April 2, 2013
    Assignee: Splunk Inc.
    Inventors: Steve Y. Zhang, Stephen P. Sorkin, Vishal Patel
  • Publication number: 20130077358
    Abstract: Methods and apparatuses are disclosed for generating a temperature independent current limit. The value of the temperature independent current limit may be determined based in part on an error signal representative of a difference between an actual output value and a desired output value of a power converter. When the error signal is below a lower threshold voltage, the temperature independent current limit may be set to a first value. When the error signal is above an upper threshold voltage, the temperature independent current limit may be set to a second, higher value. When the error signal is between the lower threshold voltage and the upper threshold voltage, the temperature independent current limit may change linearly with the error signal. The error signal may be adjusted to compensate for changes in the system caused by a change in temperature.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 28, 2013
    Applicant: Power Integrations, Inc.
    Inventors: Yury Gaknoki, Mingming Mao, Michael Y. Zhang
  • Patent number: 8396814
    Abstract: The present invention provides a flexible pricing method for providing pricing adjustments for a product in a deal in response to price variations in selected indexes. The method comprises: designating an index for the product wherein said index has a published index value; and computing a price for said product based on said published index value. The invention also provides for periodically re-pricing deals with index-based pricing terms.
    Type: Grant
    Filed: July 30, 2005
    Date of Patent: March 12, 2013
    Assignee: Vendavo, Inc.
    Inventors: Shankar Sundaram, Ramesh Seshadri, Shannon Y. Zhang, Sri Raghupathy, Simon C. Lee, Rafael A. Gonzalez-Caloni
  • Publication number: 20130049765
    Abstract: An in-situ unplug detector circuit detects when a cable is disconnected or unplugged. Detection does not have to wait for normal signaling to pause, such at the end of a frame or timeout. Instead, detection occurs during normal signaling. When the cable is disconnected, the transmitter no longer drives the load at the far end of the cable, and thus can drive the near end to a higher high voltage and to a lower low voltage. The increased voltage swing is detected by a detector at the near end that amplifies the transmitter output to the cable. A fast detector has a higher bandwidth and faster response time than a slow detector, and generates a fast detect signal that crosses over a slow detect signal. When the cable is disconnected, the fast detect signal again crosses over the slow detect signal, and decision logic activates an unplug signal.
    Type: Application
    Filed: August 25, 2011
    Publication date: February 28, 2013
    Applicant: PERICOM SEMICONDUCTOR CORP.
    Inventors: Hung-Yan Cheung, Michael Y. Zhang
  • Patent number: 8362813
    Abstract: A re-driver circuit has pre-driver, intermediate, and output stages. Pre-emphasis on the output is generated by the intermediate stage and injected into an output stage. The intermediate stage is a frequency-tuned amplifier that has an inductive-capacitive L-C tank circuit that is tuned to a desired frequency of the output. The intermediate stage does not directly drive the output stage. Instead, an on-chip coupling transformer couples the L-C tank circuit to the output stage. The coupling transformer has a first inductor that is part of the L-C tank circuit in the intermediate stage, and a second inductor that is part of the output stage. Mutual inductance between the first inductor and the second inductor inductively couple a pre-emphasis voltage onto the output. The magnitude of the pre-emphasis can be changed by adjusting current in the intermediate stage.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: January 29, 2013
    Assignee: Pericom Semiconductor Corp.
    Inventors: Tony Yeung, Michael Y. Zhang
  • Patent number: 8284918
    Abstract: Subscribers of an enhanced communication system are enabled to indicate invocation or clearing of media specific features such as music-on-hold or video-on-hold. The invocation or clearing is transmitted to participating end points as a Session Initiation Protocol (SIP) re-INVITE message with Session Description Protocol (SDP) attribute descriptions identifying the feature, applicable media channels and whether the message is for invocation or clearing of the feature.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: October 9, 2012
    Assignee: Microsoft Corporation
    Inventors: Srivatsa Srinivasan, Sundaram Anantharaman, Gene Y. Zhang
  • Publication number: 20120242377
    Abstract: A re-driver circuit has pre-driver, intermediate, and output stages. Pre-emphasis on the output is generated by the intermediate stage and injected into an output stage. The intermediate stage is a frequency-tuned amplifier that has an inductive-capacitive L-C tank circuit that is tuned to a desired frequency of the output. The intermediate stage does not directly drive the output stage. Instead, an on-chip coupling transformer couples the L-C tank circuit to the output stage. The coupling transformer has a first inductor that is part of the L-C tank circuit in the intermediate stage, and a second inductor that is part of the output stage. Mutual inductance between the first inductor and the second inductor inductively couple a pre-emphasis voltage onto the output. The magnitude of the pre-emphasis can be changed by adjusting current in the intermediate stage.
    Type: Application
    Filed: March 24, 2011
    Publication date: September 27, 2012
    Applicant: PERICOM SEMICONDUCTOR CORP.
    Inventors: Tony Yeung, Michael Y. Zhang
  • Publication number: 20120235704
    Abstract: A redriver chip is inserted between a transmitter chip and a receiver chip and re-drives differential signals from the transmitter chip to the receiver chip. The redriver chip has switched output termination that switches to a high value to detect far-end termination at the receiver chip, and to a low value for signaling. An output detector detects when the receiver chip has termination to ground and enables switched input termination to provide termination to ground on the lines back to the transmitter chip so that the far-end termination on the receiver chip is mirrored back to the transmitter chip, hiding the redriver chip. An input signal detector detects when the transmitter chip begins signaling and enables an equalizer, limiter, pre-driver, and output stage to re-drive the signals to the receiver chip. The input signal detector also causes the switched output termination to switch to the low value termination for signaling.
    Type: Application
    Filed: June 1, 2012
    Publication date: September 20, 2012
    Applicant: PERICOM SEMICONDUCTOR CORP.
    Inventors: Tony Yeung, Michael Y. Zhang
  • Publication number: 20120197928
    Abstract: A system arranged to search machine data to generate reports in real time. A search query is provided that includes a plurality of search commands. The search query is parsed to form a main search query and a remote search query. Machine data is collected from remote data sources and evaluated against one of the main and remote search queries to generate a set of search results. The main search query is then evaluated against at least a partial set of the search result to generate at least one report regarding the collected machine data. Each report can be provided for display to a user.
    Type: Application
    Filed: January 31, 2011
    Publication date: August 2, 2012
    Applicant: Splunk Inc.
    Inventors: Steve Y. Zhang, Stephen P. Sorkin, Vishal Patel
  • Patent number: 8212587
    Abstract: A redriver chip is inserted between a transmitter chip and a receiver chip and re-drives differential signals from the transmitter chip to the receiver chip. The redriver chip has switched output termination that switches to a high value to detect far-end termination at the receiver chip, and to a low value for signaling. An output detector detects when the receiver chip has termination to ground and enables switched input termination to provide termination to ground on the lines back to the transmitter chip so that the far-end termination on the receiver chip is mirrored back to the transmitter chip, hiding the redriver chip. An input signal detector detects when the transmitter chip begins signaling and enables an equalizer, limiter, pre-driver, and output stage to re-drive the signals to the receiver chip. The input signal detector also causes the switched output termination to switch to the low value termination for signaling.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: July 3, 2012
    Assignee: Pericom Semiconductor Corp.
    Inventors: Tony Yeung, Michael Y. Zhang
  • Patent number: 8196053
    Abstract: Systems and methods are provided for generating information about a document. In one implementation, a method retrieves a citation from the document in a first database and retrieves the information about the document from a second database. The method also includes converting, by a processor, the information into metadata and generating an icon from the metadata. The icon graphs treatments of the document over time. The method also includes sending the icon for display in response to a query.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: June 5, 2012
    Assignee: LexisNexis
    Inventors: Paul Y. Zhang, Thomas J. Goedde
  • Publication number: 20120110266
    Abstract: Methods and apparatus relating to disabling one or more cache portions during low voltage operations are described. In some embodiments, one or more extra bits may be used for a portion of a cache that indicate whether the portion of the cache is capable at operating at or below Vccmin levels. Other embodiments are also described and claimed.
    Type: Application
    Filed: December 31, 2011
    Publication date: May 3, 2012
    Inventors: Christopher Wilkerson, M. Muhammad Khellah, Vivek De, Ming Y. Zhang, Jaume Abella, Javier Carretero Casado, Pedro Chaparro Monferrer, Xavier Vera, Antonio Gonzalez
  • Publication number: 20120099728
    Abstract: A method, system, and computer usable program product for protocol based key management are provided in the illustrative embodiments. A key management protocol associated with a key request is identified, the key request being a request for data usable in cryptographic security. A first subset is selected from a set of policies using the key management protocol. A set of permissions is computed based on the first subset of policies, the set of permissions indicating whether the key request is permitted under the key management protocol. The set of permissions is cached in a cache in a data storage device.
    Type: Application
    Filed: October 25, 2010
    Publication date: April 26, 2012
    Applicant: International Business Machines Corporation
    Inventors: Bruce Arland Rich, Krishna Kishore Yellepeddy, Xiaoyan Y. Zhang
  • Patent number: 8156958
    Abstract: A regulator comprises a regulator valve and an actuator. The regulator valve comprises a valve body equipped with a customized valve port. That is, the valve seat is designed to have a customized seat height depending on a diameter of an orifice through the valve port, a longitudinal dimension of an orifice through the valve port, and/or a flow capacity of the valve port. Such a design advantageously maximizes the efficiency at which gas flows through the regulator. The actuator is coupled to the valve body and comprises a valve disc disposed within the valve body and adapted for displacement between a closed position engaging the valve seat and an open position spaced from the valve seat.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: April 17, 2012
    Assignee: Fisher Controls International LLC
    Inventors: Jun Y. Zhang, James C. Hawkins, Ting Xu
  • Publication number: 20120087405
    Abstract: Distortions of both amplitude and phase along a transmission line are compensated for by a trace canceller inserted between a transmitter and a receiver. The trace canceller has an equalizer that compensates for a trace length between the transmitter and the trace canceller. A variable gain amplifier between the equalizer and an output buffer has its gain controlled by an automatic gain control circuit that compares low-frequency swings of the input and output of the trace canceller. The gain of the variable gain amplifier is reduced to prevent the output buffer from saturating and clipping peak voltages on its output. Thus both the variable gain amplifier and the output buffer remain in the linear region. Training pulses from the transmitter are passed through the trace canceller without clipping of peak voltages, allowing the transmitter and receiver to adjust transmission parameters to best match the transmission line.
    Type: Application
    Filed: October 12, 2010
    Publication date: April 12, 2012
    Applicant: PERICOM SEMICONDUCTOR CORP.
    Inventors: Hung-Yan Cheung, Michael Y. Zhang
  • Publication number: 20110316621
    Abstract: A chopper-stabilized circuit (1) includes pre-chopping circuitry (26) for chopping an input signal (Vin) at a first frequency to generate a first signal. Input chopping circuitry (9) chops the first signal at a second frequency substantially greater than the first frequency to produce a second signal. The first frequency is a sub-harmonic of the second frequency. Post-chopping circuitry (30) chops the second chopped signal at the first frequency to produce a third signal that is applied to an input of a signal conditioning circuit (2). The output chopping circuitry (10) chops an output of the signal conditioning circuit at the second frequency to generate a fourth signal. The fourth signal is filtered.
    Type: Application
    Filed: June 28, 2010
    Publication date: December 29, 2011
    Inventors: Rodney T. Burt, Joy Y. Zhang
  • Patent number: 8072262
    Abstract: A chopper-stabilized circuit (1) includes pre-chopping circuitry (26) for chopping an input signal (Vin) at a first frequency to generate a first signal. Input chopping circuitry (9) chops the first signal at a second frequency substantially greater than the first frequency to produce a second signal. The first frequency is a sub-harmonic of the second frequency. Post-chopping circuitry (30) chops the second chopped signal at the first frequency to produce a third signal that is applied to an input of a signal conditioning circuit (2). The output chopping circuitry (10) chops an output of the signal conditioning circuit at the second frequency to generate a fourth signal. The fourth signal is filtered.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: December 6, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Rodney T. Burt, Joy Y. Zhang
  • Patent number: 8064087
    Abstract: A method to modify the availability of one or more attributes within a print network. One or more devices are interrogated to determine associated attributes. A first set of attribute combinations that cause device failure is determined and placed in an unsupported bank for each device. A second set of attribute combinations that do not cause device failure are determined and placed in a supported bank for each device. Access to the first set of attribute combinations is disabled and access to the second set of attribute combinations is enabled.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: November 22, 2011
    Assignee: Xerox Corporation
    Inventors: Christine M. Miyachi, John Y. Zhang, Gerald A. Wedekind, Thomas N. Hasting