Patents by Inventor Andrew Ho

Andrew Ho 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: 8817932
    Abstract: Described are methods and circuits for margin testing digital receivers. These methods and circuits prevent margins from collapsing in response to erroneously received data, and can thus be used in receivers that employ historical data to reduce intersymbol interference (ISI). Some embodiments detect receive errors for input data streams of unknown patterns, and can thus be used for in-system margin testing. Such systems can be adapted to dynamically alter system parameters during device operation to maintain adequate margins despite fluctuations in the system noise environment due to e.g. temperature and supply-voltage changes. Also described are methods of plotting and interpreting filtered and unfiltered error data generated by the disclosed methods and circuits. Some embodiments filter error data to facilitate pattern-specific margin testing.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: August 26, 2014
    Assignee: Rambus Inc.
    Inventors: Andrew Ho, Vladimir Stojanovic, Bruno W. Garlepp, Fred F. Chen
  • Publication number: 20140161166
    Abstract: Described are methods and circuits for margin testing digital receivers. These methods and circuits prevent margins from collapsing in response to erroneously received data, and can thus be used in receivers that employ historical data to reduce intersymbol interference (ISI). Some embodiments detect receive errors for input data streams of unknown patterns, and can thus be used for in-system margin testing. Such systems can be adapted to dynamically alter system parameters during device operation to maintain adequate margins despite fluctuations in the system noise environment due to e.g. temperature and supply-voltage changes. Also described are methods of plotting and interpreting filtered and unfiltered error data generated by the disclosed methods and circuits. Some embodiments filter error data to facilitate pattern-specific margin testing.
    Type: Application
    Filed: August 15, 2013
    Publication date: June 12, 2014
    Applicant: Rambus Inc.
    Inventors: Andrew Ho, Vladimir Stojanovic, Bruno W. Garlepp, Fred F. Chen
  • Patent number: 8730153
    Abstract: The disclosure relates to waveforms, circuits and methods for driving bistable displays.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: May 20, 2014
    Assignee: SiPix Imaging, Inc.
    Inventors: Robert Sprague, Wanheng Wang, Yajuan Chen, Andrew Ho, Bryan Hans Chan, Jialock Wong, Hong-Mei Zang
  • Patent number: 8714780
    Abstract: Display devices with a grooved luminance enhancement film on its viewing side and at least an auxiliary layer and/or edge sealing. The luminance enhancement film comprises columns and grooves in alternating order and each of the grooves has a cross-section comprising an apex angle and two edge lines.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: May 6, 2014
    Assignee: SiPix Imaging, Inc.
    Inventors: Andrew Ho, Bryan Chan, Craig Lin, Robert A. Sprague
  • Publication number: 20140113867
    Abstract: One embodiment of a therapeutic composition comprises one or more APLs, e.g., APL A12, for treating diseases or disorders related to arthritis, including rheumatoid arthritis. Another embodiment includes a method of inducing a Th2-type cytokine secretion profile in a mammal, including administering a therapeutic amount of A12 analog peptide. Another embodiment includes a method for generating functional T regulatory cells, the method including administering a therapeutic amount of APL A12 to a RA patient.
    Type: Application
    Filed: October 1, 2013
    Publication date: April 24, 2014
    Inventors: Arnold E. Postlethwaite, Andrew Ho Kang, Linda K. Myers
  • Publication number: 20130322506
    Abstract: A signaling system includes a pre-emphasizing transmitter and an equalizing receiver coupled to one another via a high-speed signal path. The receiver measures the quality of data conveyed from the transmitter. A controller uses this information and other information to adaptively establish appropriate transmit pre-emphasis and receive equalization settings, e.g. to select the lowest power setting for which the signaling system provides some minimum communication bandwidth without exceeding a desired bit-error rate.
    Type: Application
    Filed: May 16, 2013
    Publication date: December 5, 2013
    Applicant: Rambus, Inc.
    Inventors: Jared L. Zerbe, Fred F. Chen, Andrew Ho, Ramin Farjad-Rad, John W. Poulton, Kevin S. Donnelly, Brian S. Leibowitz
  • Patent number: 8559493
    Abstract: Described are methods and circuits for margin testing digital receivers. These methods and circuits prevent margins from collapsing in response to erroneously received data, and can thus be used in receivers that employ historical data to reduce intersymbol interference (ISI). Some embodiments detect receive errors for input data streams of unknown patterns, and can thus be used for in-system margin testing. Such systems can be adapted to dynamically alter system parameters during device operation to maintain adequate margins despite fluctuations in the system noise environment due to e.g. temperature and supply-voltage changes. Also described are methods of plotting and interpreting filtered and unfiltered error data generated by the disclosed methods and circuits. Some embodiments filter error data to facilitate pattern-specific margin testing.
    Type: Grant
    Filed: October 26, 2009
    Date of Patent: October 15, 2013
    Assignee: Rambus Inc.
    Inventors: Andrew Ho, Vladimir Stojanovic, Bruno W. Garlepp, Fred F. Chen
  • Patent number: 8385492
    Abstract: Described are methods and circuits for margin testing digital receivers. These methods and circuits prevent margins from collapsing in response to erroneously received data, and can thus be used in receivers that employ historical data to reduce intersymbol interference (ISI). Some embodiments detect receive errors for input data streams of unknown patterns, and can thus be used for in-system margin testing. Such systems can be adapted to dynamically alter system parameters during device operation to maintain adequate margins despite fluctuations in the system noise environment due to e.g. temperature and supply-voltage changes. Also described are methods of plotting and interpreting filtered and unfiltered error data generated by the disclosed methods and circuits. Some embodiments filter error data to facilitate pattern-specific margin testing.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: February 26, 2013
    Assignee: Rambus Inc.
    Inventors: Andrew Ho, Vladimir Stojanovic, Bruno W. Garlepp, Fred F. Chen
  • Publication number: 20120320017
    Abstract: The disclosure is directed toward driving methods and a driving circuit which are particularly suitable for bi-stable displays. In certain embodiments, methods provide the fastest and most pleasing appearance to the desired image while maintaining the optimal image quality over the life expectancy of an electrophoretic display device.
    Type: Application
    Filed: August 28, 2012
    Publication date: December 20, 2012
    Inventors: Robert Sprague, Andrew Ho, Yajuan Chen, Hongmei Zang, Jialock Wong, Chein Wang
  • Publication number: 20120274671
    Abstract: The disclosure relates to waveforms, circuits and methods for driving bistable displays.
    Type: Application
    Filed: May 14, 2012
    Publication date: November 1, 2012
    Applicant: SIPIX IMAGING, INC.
    Inventors: Robert Sprague, Wanheng Wang, Yajuan Chen, Andrew Ho, Bryan Hans Chan, Jialock Wong, Hong-Mei Zang
  • Patent number: 8275030
    Abstract: An integrated circuit having a receiver that selectively inhibits incoming data from being used to update adaptively generated controls. Sampling circuitry generates a plurality of samples of an incoming signal. Control circuitry generates an inhibit signal in either a first state or a second state according to whether the plurality of samples meets a randomness criterion. Tap weight update circuitry receives the inhibit signal from the control circuitry and updates a plurality of equalizer tap weights based on the plurality of samples if the inhibit signal is in the first state. The tap weight update circuitry refrains from updating the plurality of equalizer tap weights based on the plurality of samples if the inhibit signal is in the second state.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: September 25, 2012
    Assignee: Rambus Inc.
    Inventors: Carl W. Werner, Andrew Ho
  • Patent number: 8274472
    Abstract: Driving methods are described for display devices which have one or more dielectric layers in the path of an electric field driving the display. In an embodiment, image uniformity is improved by periodically refreshing, using an intermediate color state, pixels that remain in one color state before and after a change in displaying a first image and a second image, and by applying driving signals using voltage levels and durations that maintain a global DC balance in the display at near zero to avoid contrast reduction and image artifacts in the image.
    Type: Grant
    Filed: March 11, 2008
    Date of Patent: September 25, 2012
    Assignee: SiPix Imaging, Inc.
    Inventors: Wanheng Wang, Yajuan Chen, Robert Sprague, Andrew Ho, Hongmei Zang
  • Publication number: 20120207196
    Abstract: A signaling system includes a pre-emphasizing transmitter and an equalizing receiver coupled to one another via a high-speed signal path. The receiver measures the quality of data conveyed from the transmitter. A controller uses this information and other information to adaptively establish appropriate transmit pre-emphasis and receive equalization settings, e.g. to select the lowest power setting for which the signaling system provides some minimum communication bandwidth without exceeding a desired bit-error rate.
    Type: Application
    Filed: April 20, 2012
    Publication date: August 16, 2012
    Applicant: Rambus Inc.
    Inventors: Jared L. Zerbe, Fred F. Chen, Andrew Ho, Ramin Farjad-Rad, John W. Poulton, Kevin S. Donnelly, Brian Leibowitz
  • Patent number: 8243013
    Abstract: The disclosure relates to waveforms, circuits and methods for driving bistable displays.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: August 14, 2012
    Assignee: Sipix Imaging, Inc.
    Inventors: Robert Sprague, Wanheng Wang, Yajuan Chen, Andrew Ho, Bryan Hans Chan, Jialock Wong, Hong-Mei Zang
  • Publication number: 20120140812
    Abstract: Described are methods and circuits for margin testing digital receivers. These methods and circuits prevent margins from collapsing in response to erroneously received data, and can thus be used in receivers that employ historical data to reduce intersymbol interference (ISI). Some embodiments detect receive errors for input data streams of unknown patterns, and can thus be used for in-system margin testing. Such systems can be adapted to dynamically alter system parameters during device operation to maintain adequate margins despite fluctuations in the system noise environment due to e.g. temperature and supply-voltage changes. Also described are methods of plotting and interpreting filtered and unfiltered error data generated by the disclosed methods and circuits. Some embodiments filter error data to facilitate pattern-specific margin testing.
    Type: Application
    Filed: February 14, 2012
    Publication date: June 7, 2012
    Applicant: Rambus Inc.
    Inventors: Andrew Ho, Vladimir Stojanovic, Bruno W. Garlepp, Fred F. Chen
  • Publication number: 20120075175
    Abstract: The present disclosure provides a method and device for providing system status information. The method comprises: receiving, from an input mechanism associated with a communication device, a request to share system status information; and in response to receiving the request to share the system status information: (i) obtaining system status information associated with the communication device; and (ii) automatically populating one or more portions of an electronic message based on the system status information. The system status information comprises processor usage information.
    Type: Application
    Filed: February 22, 2011
    Publication date: March 29, 2012
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Michael Grant Kirkup, Andrew Ho Yin Leung
  • Publication number: 20120044984
    Abstract: A signaling system includes a pre-emphasizing transmitter and an equalizing receiver coupled to one another via a high-speed signal path. The receiver measures the quality of data conveyed from the transmitter. A controller uses this information and other information to adaptively establish appropriate transmit pre-emphasis and receive equalization settings, e.g. to select the lowest power setting for which the signaling system provides some minimum communication bandwidth without exceeding a desired bit-error rate.
    Type: Application
    Filed: October 28, 2011
    Publication date: February 23, 2012
    Applicant: Rambus Inc.
    Inventors: Jared L. Zerbe, Fred F. Chen, Andrew Ho, Ramin Farjad-Rad, John W. Poulton, Kevin S. Donnelly, Brian Leibowitz
  • Publication number: 20110310949
    Abstract: A signaling system includes a pre-emphasizing transmitter and an equalizing receiver coupled to one another via a high-speed signal path. The receiver measures the quality of data conveyed from the transmitter. A controller uses this information and other information to adaptively establish appropriate transmit pre-emphasis and receive equalization settings, e.g. to select the lowest power setting for which the signaling system provides some minimum communication bandwidth without exceeding a desired bit-error rate.
    Type: Application
    Filed: August 23, 2011
    Publication date: December 22, 2011
    Applicant: Rambus Inc.
    Inventors: Jared L. Zerbe, Fred F. Chen, Andrew Ho, Ramin Farjad-Rad, John W. Poulton, Kevin S. Donnelly, Brian Leibowitz
  • Publication number: 20110305271
    Abstract: A signaling system includes a pre-emphasizing transmitter and an equalizing receiver coupled to one another via a high-speed signal path. The receiver measures the quality of data conveyed from the transmitter. A controller uses this information and other information to adaptively establish appropriate transmit pre-emphasis and receive equalization settings, e.g. to select the lowest power setting for which the signaling system provides some minimum communication bandwidth without exceeding a desired bit-error rate.
    Type: Application
    Filed: August 23, 2011
    Publication date: December 15, 2011
    Applicant: Rambus Inc.
    Inventors: Jared L. Zerbe, Fred F. Chen, Andrew Ho, Ramin Farjad-Rad, John W. Poulton, Kevin S. Donnelly, Brian Leibowitz
  • Publication number: 20100324910
    Abstract: Techniques and systems to provide speech recognition services over a network using a standard interface are described. In an embodiment, a technique includes accepting a speech recognition request that includes at least audio input, via an application program interface (API). The speech recognition request may also include additional parameters. The technique further includes performing speech recognition on the audio according to the request and any specified parameters; and returning a speech recognition result as a hypertext protocol (HTTP) response. Other embodiments are described and claimed.
    Type: Application
    Filed: June 19, 2009
    Publication date: December 23, 2010
    Applicant: MICROSOFT CORPORATION
    Inventors: Robert L. Chambers, Michael Bodell, Daphne Luong, Annie Wong, Faustinus K. Gozali, Andrew Ho, Rod Philander, Corby Anderson