Patents by Inventor Philip Amberg

Philip Amberg 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).

  • Patent number: 10234702
    Abstract: In an optical device, a ring-resonator modulator, having an adjustable resonance (center) wavelength, receives an optical signal that includes a carrier wavelength from an input-output optical waveguide. Then, a monitoring mechanism monitors a performance metric (such as an average power or a signal swing) of a monitor optical signal from the ring-resonator modulator. Moreover, control logic in the optical device adjusts the resonance wavelength based on the monitored performance metric so that the resonance wavelength is locked to the carrier wavelength. In particular, the control logic may apply a change to an adjustment signal that is provided to the ring-resonator modulator. If the change increases the performance metric, the control logic may continue to modify the resonance wavelength. Otherwise, the control logic may modify the resonance wavelength by applying one or more changes, having an opposite sign to the change, to the adjustment signal.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: March 19, 2019
    Assignee: Oracle International Corporation
    Inventors: Philip Amberg, Eric Y. Chang, Frankie Y. Liu
  • Publication number: 20180259797
    Abstract: In an optical device, a ring-resonator modulator, having an adjustable resonance (center) wavelength, receives an optical signal that includes a carrier wavelength from an input-output optical waveguide. Then, a monitoring mechanism monitors a performance metric (such as an average power or a signal swing) of a monitor optical signal from the ring-resonator modulator. Moreover, control logic in the optical device adjusts the resonance wavelength based on the monitored performance metric so that the resonance wavelength is locked to the carrier wavelength. In particular, the control logic may apply a change to an adjustment signal that is provided to the ring-resonator modulator. If the change increases the performance metric, the control logic may continue to modify the resonance wavelength. Otherwise, the control logic may modify the resonance wavelength by applying one or more changes, having an opposite sign to the change, to the adjustment signal.
    Type: Application
    Filed: May 8, 2018
    Publication date: September 13, 2018
    Applicant: Oracle International Corporation
    Inventors: Philip Amberg, Eric Y. Chang, Frankie Y. Liu
  • Patent number: 9989785
    Abstract: In an optical device, a ring-resonator modulator, having an adjustable resonance (center) wavelength, receives an optical signal that includes a carrier wavelength from an input-output optical waveguide. Then, a monitoring mechanism monitors a performance metric (such as an average power or a signal swing) of a monitor optical signal from the ring-resonator modulator. Moreover, control logic in the optical device adjusts the resonance wavelength based on the monitored performance metric so that the resonance wavelength is locked to the carrier wavelength. In particular, the control logic may apply a change to an adjustment signal that is provided to the ring-resonator modulator. If the change increases the performance metric, the control logic may continue to modify the resonance wavelength. Otherwise, the control logic may modify the resonance wavelength by applying one or more changes, having an opposite sign to the change, to the adjustment signal.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: June 5, 2018
    Assignee: Oracle International Corporation
    Inventors: Philip Amberg, Eric Y. Chang, Frankie Y. Liu
  • Patent number: 9983420
    Abstract: In the optical device, a ring-resonator modulator, having an adjustable resonance (center) wavelength, optically couples an optical signal that includes the carrier wavelength from an input optical waveguide to an output optical waveguide. A monitoring mechanism in the optical device, which is optically coupled to the output optical waveguide, monitors a performance metric of an output optical signal from the output waveguide. For example, the monitoring mechanism may monitor: an average optical power associated with the output optical signal, and/or an amplitude of the output optical signal. Moreover, control logic in the optical device adjusts the resonance wavelength based on the monitored performance metric so that the performance metric is optimized.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: May 29, 2018
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Philip Amberg, Eric Y. Chang, Xuezhe Zheng, Frankie Y. Liu, Ronald Ho, Ashok V. Krishnamoorthy
  • Patent number: 9727606
    Abstract: Techniques are described for performing filter and project operations. In an embodiment, a set of predicates that specify criteria for filtering results to a query is received. Based on a particular predicate of the set of predicates, a predicate result for at least one portion of a particular column is generated. The predicate result identifies rows within the first column that satisfy the particular predicate. Rows are selected and returned as results to the query based at least in part on the predicate result. In an embodiment, the predicate result is a bitvector where each bit of the bitvector corresponds to a particular row within the particular column and identify whether the particular row satisfies the particular predicate.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: August 8, 2017
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Justin Schauer, Philip Amberg, Robert David Hopkins, II, Jon Lexau
  • Patent number: 9600522
    Abstract: Techniques are described for performing grouping and aggregation operations. In an embodiment, a request is received to aggregate data grouped by a first column. In response to receiving the request, values are loaded from the first column into an input cache. The values include values, from the first column, from a set of rows. A filter unit is programmed with logic to perform a comparison between a particular value, from the first column of a first row, and values in the first column of a plurality of rows, of the set of rows. Based on the comparison, a predicate result is generated that identifies rows, within the plurality of rows, that have a valued in the first column that matches the particular value. An aggregate value for a second column is generated by aggregating values, from the second column, of each of the rows identified by the predicate result.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: March 21, 2017
    Assignee: Oracle International Corporation
    Inventors: Justin Schauer, Philip Amberg, Robert David Hopkins, II
  • Patent number: 9563658
    Abstract: Techniques are described for performing grouping and aggregation operations. In one embodiment, a request is received to aggregate data grouped by a first column. In response to receiving the request, a group value in a row of a first column is mapped to an address. A pointer is stored for a first group at a first location identified by the address. The pointer identifies a second location of a set of aggregation data for the first group. An aggregate value included in the set of aggregation data is updated based on a value in the row of a second column.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: February 7, 2017
    Assignee: Oracle International Corporation
    Inventors: Philip Amberg, Justin Schauer, Robert David Hopkins
  • Publication number: 20170010485
    Abstract: In an optical device, a ring-resonator modulator, having an adjustable resonance (center) wavelength, receives an optical signal that includes a carrier wavelength from an input-output optical waveguide. Then, a monitoring mechanism monitors a performance metric (such as an average power or a signal swing) of a monitor optical signal from the ring-resonator modulator. Moreover, control logic in the optical device adjusts the resonance wavelength based on the monitored performance metric so that the resonance wavelength is locked to the carrier wavelength. In particular, the control logic may apply a change to an adjustment signal that is provided to the ring-resonator modulator. If the change increases the performance metric, the control logic may continue to modify the resonance wavelength. Otherwise, the control logic may modify the resonance wavelength by applying one or more changes, having an opposite sign to the change, to the adjustment signal.
    Type: Application
    Filed: August 19, 2014
    Publication date: January 12, 2017
    Inventors: Philip Amberg, Eric Y. Chang, Frankie Y. Liu
  • Publication number: 20150160482
    Abstract: In the optical device, a ring-resonator modulator, having an adjustable resonance (center) wavelength, optically couples an optical signal that includes the carrier wavelength from an input optical waveguide to an output optical waveguide. A monitoring mechanism in the optical device, which is optically coupled to the output optical waveguide, monitors a performance metric of an output optical signal from the output waveguide. For example, the monitoring mechanism may monitor: an average optical power associated with the output optical signal, and/or an amplitude of the output optical signal. Moreover, control logic in the optical device adjusts the resonance wavelength based on the monitored performance metric so that the performance metric is optimized.
    Type: Application
    Filed: October 16, 2014
    Publication date: June 11, 2015
    Inventors: Philip Amberg, Eric Y. Chang, Xuezhe Zheng, Frankie Y. Liu, Ronald Ho, Ashok V. Krishnamoorthy
  • Publication number: 20150071021
    Abstract: A method of accessing rows and columns stored in a memory system that include memory chips that can be individually addressed and accessed is described. In order to leverage this capability, prior to performing a row-write request on the memory system, a computer system may transform the rows and the columns in a matrix. In particular, in response to receiving a row-write request to write to a row N in the matrix, the computer system rotates the row right by N elements, and writes the row in parallel to address N of the memory chips in the memory system. Similarly, in response to receiving a column-write request to write to column M in the matrix, the computer system rotates the column right by M elements, and writes the column in parallel to the memory chips in the memory system.
    Type: Application
    Filed: September 11, 2013
    Publication date: March 12, 2015
    Applicant: Oracle International Corporation
    Inventors: Philip Amberg, Alex Chow, Robert David Hopkins, II
  • Patent number: 8917571
    Abstract: The disclosed embodiments provide a chip package that facilitates configurable-width memory channels. In this chip package, a semiconductor die is electrically connected to two or more memory chips. More specifically, contacts on each individual memory chip are each directly connected to a distinct set of contacts on the semiconductor die such that the semiconductor die has separate, unique command and address buses to individually address and communicate with each individual memory chip. Individually addressable memory chips that are each accessed via separate command and address buses facilitate a configurable-width memory channel that efficiently supports different data-access granularities.
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: December 23, 2014
    Assignee: Oracle International Corporation
    Inventors: Alex Chow, Philip Amberg, Robert David Hopkins, II
  • Publication number: 20140185352
    Abstract: The disclosed embodiments provide a chip package that facilitates configurable-width memory channels. In this chip package, a semiconductor die is electrically connected to two or more memory chips. More specifically, contacts on each individual memory chip are each directly connected to a distinct set of contacts on the semiconductor die such that the semiconductor die has separate, unique command and address buses to individually address and communicate with each individual memory chip. Individually addressable memory chips that are each accessed via separate command and address buses facilitate a configurable-width memory channel that efficiently supports different data-access granularities.
    Type: Application
    Filed: January 2, 2013
    Publication date: July 3, 2014
    Applicant: ORACLE INTERNATIONAL CORPORATION
    Inventors: Alex Chow, Philip Amberg, Robert David Hopkins, II
  • Publication number: 20140052743
    Abstract: Techniques are described for performing filter and project operations. In an embodiment, a set of predicates that specify criteria for filtering results to a query is received. Based on a particular predicate of the set of predicates, a predicate result for at least one portion of a particular column is generated. The predicate result identifies rows within the first column that satisfy the particular predicate. Rows are selected and returned as results to the query based at least in part on the predicate result. In an embodiment, the predicate result is a bitvector where each bit of the bitvector corresponds to a particular row within the particular column and identify whether the particular row satisfies the particular predicate.
    Type: Application
    Filed: August 20, 2012
    Publication date: February 20, 2014
    Inventors: Justin Schauer, Philip Amberg, Robert David Hopkins, II, Jon Lexau
  • Publication number: 20140052713
    Abstract: Techniques are described for performing grouping and aggregation operations. In an embodiment, a request is received to aggregate data grouped by a first column. In response to receiving the request, values are loaded from the first column into an input cache. The values include values, from the first column, from a set of rows. A filter unit is programmed with logic to perform a comparison between a particular value, from the first column of a first row, and values in the first column of a plurality of rows, of the set of rows. Based on the comparison, a predicate result is generated that identifies rows, within the plurality of rows, that have a valued in the first column that matches the particular value. An aggregate value for a second column is generated by aggregating values, from the second column, of each of the rows identified by the predicate result.
    Type: Application
    Filed: August 20, 2012
    Publication date: February 20, 2014
    Inventors: Justin Schauer, Philip Amberg, Robert David Hopkins, II
  • Publication number: 20140052726
    Abstract: Techniques are described for performing grouping and aggregation operations. In one embodiment, a request is received to aggregate data grouped by a first column. In response to receiving the request, a group value in a row of a first column is mapped to an address. A pointer is stored for a first group at a first location identified by the address. The pointer identifies a second location of a set of aggregation data for the first group. An aggregate value included in the set of aggregation data is updated based on a value in the row of a second column.
    Type: Application
    Filed: August 20, 2012
    Publication date: February 20, 2014
    Inventors: Philip Amberg, Justin Schauer, Robert David Hopkins
  • Patent number: 8155538
    Abstract: A technique for calibrating an optical receiver is described. During this technique, a front-end circuit in the optical receiver receives an optical signal that corresponds to a sequence with alternating groups of symbol types that correspond to binary values, where durations of the groups of a given symbol type, which can correspond to a first binary value or a second binary value, progressively decrease during the sequence. Then, the output of the feedback circuit is adjusted based at least on the sequence. When the durations of groups corresponding to the first binary value and the second binary value reach their minimum values in the sequence, a calibration value corresponding to the output of the feedback circuit is stored for use during a normal operating mode of the optical receiver.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: April 10, 2012
    Assignee: Oracle America, Inc.
    Inventors: Philip Amberg, Dinesh D. Patil, Frankie Y. Liu
  • Publication number: 20110135320
    Abstract: A technique for calibrating an optical receiver is described. During this technique, a front-end circuit in the optical receiver receives an optical signal that corresponds to a sequence with alternating groups of symbol types that correspond to binary values, where durations of the groups of a given symbol type, which can correspond to a first binary value or a second binary value, progressively decrease during the sequence. Then, the output of the feedback circuit is adjusted based at least on the sequence. When the durations of groups corresponding to the first binary value and the second binary value reach their minimum values in the sequence, a calibration value corresponding to the output of the feedback circuit is stored for use during a normal operating mode of the optical receiver.
    Type: Application
    Filed: December 9, 2009
    Publication date: June 9, 2011
    Applicant: SUN MICROSYSTEMS, INC.
    Inventors: Philip Amberg, Dinesh D. Patil, Frankie Y. Liu