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).
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Patent number: 8817932Abstract: 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: GrantFiled: August 15, 2013Date of Patent: August 26, 2014Assignee: Rambus Inc.Inventors: Andrew Ho, Vladimir Stojanovic, Bruno W. Garlepp, Fred F. Chen
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Publication number: 20140161166Abstract: 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: ApplicationFiled: August 15, 2013Publication date: June 12, 2014Applicant: Rambus Inc.Inventors: Andrew Ho, Vladimir Stojanovic, Bruno W. Garlepp, Fred F. Chen
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Patent number: 8730153Abstract: The disclosure relates to waveforms, circuits and methods for driving bistable displays.Type: GrantFiled: May 14, 2012Date of Patent: May 20, 2014Assignee: SiPix Imaging, Inc.Inventors: Robert Sprague, Wanheng Wang, Yajuan Chen, Andrew Ho, Bryan Hans Chan, Jialock Wong, Hong-Mei Zang
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Patent number: 8714780Abstract: 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: GrantFiled: April 20, 2010Date of Patent: May 6, 2014Assignee: SiPix Imaging, Inc.Inventors: Andrew Ho, Bryan Chan, Craig Lin, Robert A. Sprague
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Publication number: 20140113867Abstract: 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: ApplicationFiled: October 1, 2013Publication date: April 24, 2014Inventors: Arnold E. Postlethwaite, Andrew Ho Kang, Linda K. Myers
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Publication number: 20130322506Abstract: 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: ApplicationFiled: May 16, 2013Publication date: December 5, 2013Applicant: Rambus, Inc.Inventors: Jared L. Zerbe, Fred F. Chen, Andrew Ho, Ramin Farjad-Rad, John W. Poulton, Kevin S. Donnelly, Brian S. Leibowitz
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Patent number: 8559493Abstract: 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: GrantFiled: October 26, 2009Date of Patent: October 15, 2013Assignee: Rambus Inc.Inventors: Andrew Ho, Vladimir Stojanovic, Bruno W. Garlepp, Fred F. Chen
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Patent number: 8385492Abstract: 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: GrantFiled: February 14, 2012Date of Patent: February 26, 2013Assignee: Rambus Inc.Inventors: Andrew Ho, Vladimir Stojanovic, Bruno W. Garlepp, Fred F. Chen
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Publication number: 20120320017Abstract: 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: ApplicationFiled: August 28, 2012Publication date: December 20, 2012Inventors: Robert Sprague, Andrew Ho, Yajuan Chen, Hongmei Zang, Jialock Wong, Chein Wang
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Publication number: 20120274671Abstract: The disclosure relates to waveforms, circuits and methods for driving bistable displays.Type: ApplicationFiled: May 14, 2012Publication date: November 1, 2012Applicant: SIPIX IMAGING, INC.Inventors: Robert Sprague, Wanheng Wang, Yajuan Chen, Andrew Ho, Bryan Hans Chan, Jialock Wong, Hong-Mei Zang
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Patent number: 8275030Abstract: 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: GrantFiled: May 10, 2010Date of Patent: September 25, 2012Assignee: Rambus Inc.Inventors: Carl W. Werner, Andrew Ho
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Patent number: 8274472Abstract: 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: GrantFiled: March 11, 2008Date of Patent: September 25, 2012Assignee: SiPix Imaging, Inc.Inventors: Wanheng Wang, Yajuan Chen, Robert Sprague, Andrew Ho, Hongmei Zang
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Publication number: 20120207196Abstract: 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: ApplicationFiled: April 20, 2012Publication date: August 16, 2012Applicant: Rambus Inc.Inventors: Jared L. Zerbe, Fred F. Chen, Andrew Ho, Ramin Farjad-Rad, John W. Poulton, Kevin S. Donnelly, Brian Leibowitz
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Patent number: 8243013Abstract: The disclosure relates to waveforms, circuits and methods for driving bistable displays.Type: GrantFiled: May 5, 2008Date of Patent: August 14, 2012Assignee: Sipix Imaging, Inc.Inventors: Robert Sprague, Wanheng Wang, Yajuan Chen, Andrew Ho, Bryan Hans Chan, Jialock Wong, Hong-Mei Zang
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Publication number: 20120140812Abstract: 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: ApplicationFiled: February 14, 2012Publication date: June 7, 2012Applicant: Rambus Inc.Inventors: Andrew Ho, Vladimir Stojanovic, Bruno W. Garlepp, Fred F. Chen
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Publication number: 20120075175Abstract: 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: ApplicationFiled: February 22, 2011Publication date: March 29, 2012Applicant: RESEARCH IN MOTION LIMITEDInventors: Michael Grant Kirkup, Andrew Ho Yin Leung
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Publication number: 20120044984Abstract: 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: ApplicationFiled: October 28, 2011Publication date: February 23, 2012Applicant: Rambus Inc.Inventors: Jared L. Zerbe, Fred F. Chen, Andrew Ho, Ramin Farjad-Rad, John W. Poulton, Kevin S. Donnelly, Brian Leibowitz
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Publication number: 20110310949Abstract: 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: ApplicationFiled: August 23, 2011Publication date: December 22, 2011Applicant: Rambus Inc.Inventors: Jared L. Zerbe, Fred F. Chen, Andrew Ho, Ramin Farjad-Rad, John W. Poulton, Kevin S. Donnelly, Brian Leibowitz
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Publication number: 20110305271Abstract: 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: ApplicationFiled: August 23, 2011Publication date: December 15, 2011Applicant: Rambus Inc.Inventors: Jared L. Zerbe, Fred F. Chen, Andrew Ho, Ramin Farjad-Rad, John W. Poulton, Kevin S. Donnelly, Brian Leibowitz
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Publication number: 20100324910Abstract: 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: ApplicationFiled: June 19, 2009Publication date: December 23, 2010Applicant: MICROSOFT CORPORATIONInventors: Robert L. Chambers, Michael Bodell, Daphne Luong, Annie Wong, Faustinus K. Gozali, Andrew Ho, Rod Philander, Corby Anderson