Patents by Inventor Mark Horowitz

Mark Horowitz 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).

  • Variable imaging arrangements and methods therefor
    Patent number: 8648958
    Abstract: Various approaches to imaging involve selecting directional and spatial resolution. According to an example embodiment, images are computed using an imaging arrangement to facilitate selective directional and spatial aspects of the detection and processing of light data. Light passed through a main lens is directed to photosensors via a plurality of microlenses. The separation between the microlenses and photosensors is set to facilitate directional and/or spatial resolution in recorded light data, and facilitating refocusing power and/or image resolution in images computed from the recorded light data. In one implementation, the separation is varied between zero and one focal length of the microlenses to respectively facilitate spatial and directional resolution (with increasing directional resolution, hence refocusing power, as the separation approaches one focal length).
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: February 11, 2014
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Yi-Ren Ng, Patrick M. Hanrahan, Mark A. Horowitz, Marc S. Levoy
  • IMAGING ARRANGEMENTS AND METHODS THEREFOR
    Publication number: 20140028892
    Abstract: Image data is processed to facilitate focusing and/or optical correction. According to an example embodiment of the present invention, an imaging arrangement collects light data corresponding to light passing through a particular focal plane. The light data is collected using an approach that facilitates the determination of the direction from which various portions of the light incident upon a portion of the focal plane emanate from. Using this directional information in connection with value of the light as detected by photosensors, an image represented by the light is selectively focused and/or corrected.
    Type: Application
    Filed: August 26, 2013
    Publication date: January 30, 2014
    Applicant: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: Yi-Ren Ng, Patrick M. Hanrahan, Marc A. Levoy, Mark A. Horowitz
  • Multiphase receiver with equalization circuitry
    Patent number: 8634452
    Abstract: An integrated circuit device includes a first circuit to receive bits associated with a first data cycle of an electrical input signal, operable to produce a decision regarding logic state of the bits associated with the first data cycle, and a second circuit to receive bits associated with a second cycle of the electrical input signal, to produce a decision regarding logic state of the bits associated with the second data cycle. An equalizing circuit compensates for intersymbol interference affecting the second circuit dependent on an output of the first circuit and compensates for intersymbol interference affecting the first circuit dependent on an output of a circuit other than the first circuit operable to produce a decision regarding logic state of bits of the electrical input signal.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: January 21, 2014
    Assignee: Rambus Inc.
    Inventors: Jared L. Zerbe, Bruno W. Garlepp, Pak S. Chau, Kevin S. Donnelly, Mark A. Horowitz, Stefanos Sidiropoulos, Billy W. Garrett, Jr., Carl W. Werner
  • Memory system with calibrated data communication
    Patent number: 8630317
    Abstract: An integrated circuit device includes a transmitter circuit operable to transmit a timing signal over a first wire to a DRAM. The DRAM receives a first signal having a balanced number of logical zero-to-one transitions and one-to-zero transitions and samples the first signal at a rising edge of the timing signal to produce a respective sampled value. The device further includes a receiver circuit to receive the respective sampled value from the DRAM over a plurality of wires separate from the first wire. In a first mode, the transmitter circuit repeatedly transmits incrementally offset versions of the timing signal to the DRAM until sampled values received from the DRAM change from a logical zero to a logical one or vice versa; and in a second mode, it transmits write data over the plurality of wires to the DRAM according to a write timing offset generated based on the sampled values.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: January 14, 2014
    Assignee: Rambus Inc.
    Inventors: Jared LeVan Zerbe, Kevin S. Donnelly, Stefanos Sidiropoulos, Donald C. Stark, Mark A. Horowitz, Leung Yu, Roxanne Vu, Jun Kim, Bruno W. Garlepp, Tsyr-Chyang Ho, Benedict Chung-Kwong Lau
  • High speed signaling system with adaptive transmit pre-emphasis
    Patent number: 8564328
    Abstract: A high-speed signaling system with adaptive transmit pre-emphasis. A transmit circuit has a plurality of output drivers to output a first signal onto a signal path. A receive circuit is coupled to receive the first signal via the signal path and configured to generate an indication of whether the first signal exceeds a threshold level. A first threshold control circuit is coupled to receive the indication from the receive circuit and configured to adjust the threshold level according to whether the first signal exceeds the threshold level. A drive strength control circuit is coupled to receive the indication from the receive circuit and configured to adjust a drive strength of at least one output driver of the plurality of output drivers according to whether the first signal exceeds the threshold level.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: October 22, 2013
    Assignee: Rambus Inc.
    Inventors: Vladimir M. Stojanovic, Andrew C. C. Ho, Anthony Bessios, Fred F. Chen, Elad Alon, Mark A. Horowitz
  • HIGH SPEED SIGNALING SYSTEM WITH ADAPTIVE TRANSMIT PRE-EMPHASIS
    Publication number: 20130272359
    Abstract: A high-speed signaling system with adaptive transmit pre-emphasis. A transmit circuit has a plurality of output drivers to output a first signal onto a signal path. A receive circuit is coupled to receive the first signal via the signal path and configured to generate an indication of whether the first signal exceeds a threshold level. A first threshold control circuit is coupled to receive the indication from the receive circuit and configured to adjust the threshold level according to whether the first signal exceeds the threshold level. A drive strength control circuit is coupled to receive the indication from the receive circuit and configured to adjust a drive strength of at least one output driver of the plurality of output drivers according to whether the first signal exceeds the threshold level.
    Type: Application
    Filed: June 7, 2013
    Publication date: October 17, 2013
    Inventors: Vladimir M. Stojanovic, Andrew C. Ho, Anthony Bessios, Fred F. Chen, Elad Alon, Mark A. Horowitz
  • HIGH SPEED SIGNALING SYSTEM WITH ADAPTIVE TRANSMIT PRE-EMPHASIS
    Publication number: 20130272446
    Abstract: A high-speed signaling system with adaptive transmit pre-emphasis. A transmit circuit has a plurality of output drivers to output a first signal onto a signal path. A receive circuit is coupled to receive the first signal via the signal path and configured to generate an indication of whether the first signal exceeds a threshold level. A first threshold control circuit is coupled to receive the indication from the receive circuit and configured to adjust the threshold level according to whether the first signal exceeds the threshold level. A drive strength control circuit is coupled to receive the indication from the receive circuit and configured to adjust a drive strength of at least one output driver of the plurality of output drivers according to whether the first signal exceeds the threshold level.
    Type: Application
    Filed: June 7, 2013
    Publication date: October 17, 2013
    Inventors: Vladimir M. Stojanovic, Andrew C. Ho, Anthony Bessios, Fred F. Chen, Elad Alon, Mark A. Horowitz
  • Method and apparatus for determining a calibration signal
    Patent number: 8553752
    Abstract: Embodiments of a system for determining and optimizing the performance a signaling system are described. During operation, the system captures or measures a single-bit response (SBR) for the signaling system. Next, the system constructs an idealized inter-symbol-interference-free (ISI-free) SBR for the signaling system which is substantially free of inter-symbol-interference (ISI). The system then calculates an ISI-residual from the captured SBR and the idealized ISI-free SBR. Next, the system constructs a calibration bit pattern for the signaling system that is based substantially on the ISI-residual. Finally, the system uses the calibration bit pattern to calibrate, optimize and determine an aspect of the performance of the signaling system.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: October 8, 2013
    Assignee: Rambus Inc.
    Inventors: Wendemagegnehu Beyene, Kevin S. Donnelly, Mark A. Horowitz
  • Imaging arrangements and methods therefor
    Patent number: 8547475
    Abstract: Image data is processed to facilitate focusing and/or optical correction. According to an example embodiment of the present invention, an imaging arrangement collects light data corresponding to light passing through a particular focal plane. The light data is collected using an approach that facilitates the determination of the direction from which various portions of the light incident upon a portion of the focal plane emanate from. Using this directional information in connection with value of the light as detected by photosensors, an image represented by the light is selectively focused and/or corrected.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: October 1, 2013
    Assignee: The Board of Trustees of the Leland Stanford Junior Univeristy
    Inventors: Yi-Ren Ng, Patrick M. Hanrahan, Mark A. Horowitz, Marc S. Levoy
  • Chip Having Register to Store Value that Represents Adjustment to Reference Voltage
    Publication number: 20130227214
    Abstract: An integrated circuit device includes a transmitter circuit including an output driver. The integrated circuit device includes a first register to store a value representative of a drive strength setting associated with the transmitter circuit such that the output driver outputs data in accordance with the drive strength setting. The integrated circuit device also includes a second register to store a value representative of an equalization setting associated with the transmitter circuit such that the output driver outputs data in accordance with the equalization setting. The integrated circuit device further includes a third register to store a value representative of a slew rate setting associated with the transmitter circuit such that the output driver outputs data in accordance with the slew rate setting.
    Type: Application
    Filed: March 29, 2013
    Publication date: August 29, 2013
    Inventors: Mark A. Horowitz, Richard M. Barth, Craig E. Hampel, Alfredo Moncayo, Kevin S. Donnelly, Jared L. Zerbe
  • Technique for determining performance characteristics of electronic devices and systems
    Patent number: 8489345
    Abstract: A technique for determining performance characteristics of electronic devices and systems is disclosed. In one embodiment, the technique is realized by measuring a first response on a first transmission line from a single pulse transmitted on the first transmission line, and then measuring a second response on the first transmission line from a single pulse transmitted on at least one second transmission line, wherein the at least one second transmission line is substantially adjacent to the first transmission line. The worst case bit sequences for transmission on the first transmission line and the at least one second transmission line are then determined based upon the first response and the second response for determining performance characteristics associated with the first transmission line.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: July 16, 2013
    Assignee: Rambus Inc.
    Inventors: Haw-Jyh Liaw, Xiangchao Yuan, Mark A. Horowitz
  • Chip having register to store value that represents adjustment to reference voltage
    Patent number: 8458385
    Abstract: A chip includes a receiver circuit that uses a reference voltage to receive a data signal such that a logic level of the received data signal is determined using the reference voltage, and a register to store a value that represents an adjustment to the reference voltage.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: June 4, 2013
    Assignee: Rambus Inc.
    Inventors: Mark A. Horowitz, Richard M. Barth, Craig E. Hampel, Alfredo Moncayo, Kevin S. Donnelly, Jared L. Zerbe
  • Clock and Data Recovery Employing Piece-Wise Estimation on the Derivative of the Frequency
    Publication number: 20130136220
    Abstract: A system and method for performing clock and data recovery. The system sets the phase of a recovered clock signal according to at least three estimates of the rate of change of an offset between the frequency of the data transmitter clock and the frequency of a receiver clock.
    Type: Application
    Filed: November 12, 2012
    Publication date: May 30, 2013
    Inventors: Hae-Chang Lee, Thomas H. Greer, III, Jade M. Kizer, Brian S. Leibowitz, Mark A. Horowitz
  • Memory System With Error Detection And Retry Modes Of Operation
    Publication number: 20130139032
    Abstract: A memory system includes a link having at least one signal line and a controller. The controller includes at least one transmitter coupled to the link to transmit first data, and a first error protection generator coupled to the transmitter. The first error protection generator dynamically adds an error detection code to at least a portion of the first data. At least one receiver is coupled to the link to receive second data. A first error detection logic determines if the second data received by the controller contains at least one error and, if an error is detected, asserts a first error condition. The system includes a memory device having at least one memory device transmitter coupled to the link to transmit the second data. A second error protection generator coupled to the memory device transmitter dynamically adds an error detection code to at least a portion of the second data.
    Type: Application
    Filed: December 29, 2012
    Publication date: May 30, 2013
    Inventors: Ely K. Tsern, Mark A. Horowitz, Frederick A. Ware
  • Equalizing receiver
    Patent number: 8428196
    Abstract: A signaling system is described. The signaling system comprises a transmit device, a receive device including a partial response receive circuit, and a signaling path coupling the transmit device and the receive device. The receive device observes an equalized signal from the signaling path, and includes circuitry to use feedback from the most recent previously resolved symbol to sample a currently incoming symbol. The transmit device equalizes transmit data to transmit the equalized signal, by applying weighting based on one or more data values not associated with the most recent previously resolved symbol value.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: April 23, 2013
    Assignee: Rambus Inc.
    Inventors: Vladimir M. Stojanovic, Mark A. Horowitz, Jared L. Zerbe, Anthony Bessios, Andrew C. C. Ho, Jason C. Wei, Grace Tsang, Bruno W. Garlepp
  • System and method for recycling energy from ice remnants
    Publication number: 20130068422
    Abstract: A system for recycling energy from ice remnants. The system includes a container. The container includes a receptacle configured to receive ice remnants. An ice capturing and melting device below the receptacle is configured to capture and melt ice in the ice remnants while allowing fluid in the ice remnants to pass therethrough thereby forming a cooled recycled liquid at a bottom of the container. A discharge port located proximate the bottom of the container is configured to direct the cooled recycled liquid to at least one heat source of a facility and cool the heat source.
    Type: Application
    Filed: September 15, 2011
    Publication date: March 21, 2013
    Inventor: Alan Mark Horowitz
  • Imaging arrangements and methods therefor
    Patent number: 8395696
    Abstract: Image data is processed to facilitate focusing and/or optical correction. According to an example embodiment of the present invention, an imaging arrangement collects light data corresponding to light passing through a particular focal plane. The light data is collected using an approach that facilitates the determination of the direction from which various portions of the light incident upon a portion of the focal plane emanate from. Using this directional information in connection with value of the light as detected by photosensors, an image represented by the light is selectively focused and/or corrected.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: March 12, 2013
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Yi-Ren Ng, Patrick M. Hanrahan, Marc A. Levoy, Mark A. Horowitz
  • VARIABLE IMAGING ARRANGEMENTS AND METHODS THEREFOR
    Publication number: 20130033626
    Abstract: Various approaches to imaging involve selecting directional and spatial resolution. According to an example embodiment, images are computed using an imaging arrangement to facilitate selective directional and spatial aspects of the detection and processing of light data. Light passed through a main lens is directed to photosensors via a plurality of microlenses. The separation between the microlenses and photosensors is set to facilitate directional and/or spatial resolution in recorded light data, and facilitating refocusing power and/or image resolution in images computed from the recorded light data. In one implementation, the separation is varied between zero and one focal length of the microlenses to respectively facilitate spatial and directional resolution (with increasing directional resolution, hence refocusing power, as the separation approaches one focal length).
    Type: Application
    Filed: July 5, 2012
    Publication date: February 7, 2013
    Applicant: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: Yi-Ren NG, Patrick M. Hanrahan, Mark A. Horowitz, Marc S. Levoy
  • Correction of optical abberations
    Patent number: 8358354
    Abstract: Digital images are computed using an approach for correcting lens aberration. According to an example embodiment of the present invention, a digital imaging arrangement implements microlenses to direct light to photosensors that detect the light and generate data corresponding to the detected light. The generated data is used to compute an output image, where each output image pixel value corresponds to a selective weighting and summation of a subset of the detected photosensor values. The weighting is a function of characteristics of the imaging arrangement. In some applications, the weighting reduces the contribution of data from photosensors that contribute higher amounts of optical aberration to the corresponding output image pixel.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: January 22, 2013
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Yi-Ren Ng, Patrick M. Hanrahan, Mark A. Horowitz, Marc S Levoy
  • Imaging arrangements and methods therefor
    Patent number: 8358367
    Abstract: Image data is processed to facilitate focusing and/or optical correction. According to an example embodiment of the present invention, an imaging arrangement collects light data corresponding to light passing through a particular focal plane. The light data is collected using an approach that facilitates the determination of the direction from which various portions of the light incident upon a portion of the focal plane emanate from. Using this directional information in connection with value of the light as detected by photosensors, an image represented by the light is selectively focused and/or corrected.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: January 22, 2013
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Yi-Ren Ng, Patrick M. Hanrahan, Marc A. Levoy, Mark A. Horowitz