Patents by Inventor Mark A. Horowitz

Mark A. 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).

  • Imaging arrangements and methods therefor
    Patent number: 8953064
    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: September 16, 2014
    Date of Patent: February 10, 2015
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Yi-Ren Ng, Patrick M. Hanrahan, Marc A. Levoy, Mark A. Horowitz
  • Memory controller with circuitry to set memory device-specific reference voltages
    Patent number: 8948212
    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: January 13, 2014
    Date of Patent: February 3, 2015
    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
  • IMAGING ARRANGEMENTS AND METHODS THEREFOR
    Publication number: 20150029388
    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: September 16, 2014
    Publication date: January 29, 2015
    Applicant: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: Yi-Ren Ng, Patrick M. Hanrahan, Marc A. Levoy, Mark A. Horowitz
  • TIME-BASED DIGITIZER FOR PET PHOTODETECTOR
    Publication number: 20150001404
    Abstract: An integrated circuit in a PET imaging system with a plurality of photo detectors is provided. A plurality of differential transimpedance amplifiers with differential inputs and differential outputs is provided, wherein differential inputs for each differential transimpedance amplifier of the plurality of differential transimpedance amplifiers are electrically connected to a photodetector.
    Type: Application
    Filed: December 4, 2012
    Publication date: January 1, 2015
    Inventors: Frances W. Y. Lau, Craig Steven Levin, Mark A. Horowitz, Hwang Ho Choi, Jaeha Kim
  • Chip Having Register to Store Value that Represents Adjustment to Reference Voltage
    Publication number: 20150006771
    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: July 1, 2014
    Publication date: January 1, 2015
    Inventors: Mark A. Horowitz, Craig E. Hampel, Alfredo Moncayo, Kevin S. Donnelly, Jared L. Zerbe
  • Clock and data recovery using receiver clock spread spectrum modulation and offset compensation
    Patent number: 8923467
    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: Grant
    Filed: November 12, 2012
    Date of Patent: December 30, 2014
    Assignee: Rambus Inc.
    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
    Patent number: 8918703
    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: Grant
    Filed: December 29, 2012
    Date of Patent: December 23, 2014
    Assignee: Rambus Inc.
    Inventors: Ely K. Tsern, Mark A. Horowitz, Frederick A. Ware
  • Floating-point multiply-add unit using cascade design
    Patent number: 8892619
    Abstract: A floating-point fused multiply-add (FMA) unit embodied in an integrated circuit includes a multiplier circuit cascaded with an adder circuit to produce a result A*C+B. To decrease latency, the FMA includes accumulation bypass circuits forwarding an unrounded result of the adder to inputs of the close path and the far path circuits of the adder, and forwarding an exponent result in carry save format to an input of the exponent difference circuit. Also included in the FMA is a multiply-add bypass circuit forwarding the unrounded result to the inputs of the multiplier circuit. The adder circuit includes an exponent difference circuit implemented in parallel with the multiplier circuit; a close path circuit implemented after the exponent difference circuit; and a far path circuit implemented after the exponent difference circuit.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: November 18, 2014
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Sameh Galal, Mark Horowitz
  • Imaging arrangements and methods therefor
    Patent number: 8866957
    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: August 26, 2013
    Date of Patent: October 21, 2014
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Yi-Ren Ng, Partrick M. Hanrahan, Marc A. Levoy, Mark A. Horowitz
  • Multiphase Receiver with Equalization Circuitry
    Publication number: 20140286389
    Abstract: An integrated circuit device includes a sense amplifier with an input to receive a present signal representing a present bit. The sense amplifier is to produce a decision regarding a logic level of the present bit. The integrated circuit device also includes a circuit to precharge the input of the sense amplifier by applying to the input of the sense amplifier a portion of a previous signal representing a previous bit. The integrated circuit device further includes a latch, coupled to the sense amplifier, to output the logic level.
    Type: Application
    Filed: January 17, 2014
    Publication date: September 25, 2014
    Applicant: 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
  • THERMAL ANNEAL USING WORD-LINE HEATING ELEMENT
    Publication number: 20140254286
    Abstract: In response to detecting an event during operation of an integrated-circuit memory device containing charge-storing memory cells, an electric current is enabled to flow through a word line coupled to the charge-storing memory cells for a brief interval to heat the charge-storing memory cells to an annealing temperature range.
    Type: Application
    Filed: December 5, 2013
    Publication date: September 11, 2014
    Applicant: Rambus Inc.
    Inventors: Gary B. Bronner, Brent S. Haukness, Mark A. Horowitz, Mark D. Kellam, Fariborz Assaderaghi
  • Memory System with Calibrated Data Communication
    Publication number: 20140229667
    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: Application
    Filed: January 13, 2014
    Publication date: August 14, 2014
    Applicant: 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
  • VARIABLE IMAGING ARRANGEMENTS AND METHODS THEREFOR
    Publication number: 20140204184
    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: March 19, 2014
    Publication date: July 24, 2014
    Applicant: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    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
    Patent number: 8775705
    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: Grant
    Filed: March 29, 2013
    Date of Patent: July 8, 2014
    Assignee: Rambus Inc.
    Inventors: Mark A. Horowitz, Craig E. Hampel, Alfredo Moncayo, Kevin S. Donnelly, Jared L. Zerbe
  • Floating-point multiply-add unit using cascade design
    Publication number: 20140188966
    Abstract: A floating-point fused multiply-add (FMA) unit embodied in an integrated circuit includes a multiplier circuit cascaded with an adder circuit to produce a result A*C+B. To decrease latency, the FMA includes accumulation bypass circuits forwarding an unrounded result of the adder to inputs of the close path and the far path circuits of the adder, and forwarding an exponent result in carry save format to an input of the exponent difference circuit. Also included in the FMA is a multiply-add bypass circuit forwarding the unrounded result to the inputs of the multiplier circuit. The adder circuit includes an exponent difference circuit implemented in parallel with the multiplier circuit; a close path circuit implemented after the exponent difference circuit; and a far path circuit implemented after the exponent difference circuit.
    Type: Application
    Filed: July 24, 2012
    Publication date: July 3, 2014
    Inventors: Sameh Galal, Mark Horowitz
  • Variable imaging arrangements and methods therefor
    Patent number: 8717489
    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: May 6, 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
    Patent number: 8698944
    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: August 26, 2013
    Date of Patent: April 15, 2014
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Ren Ng, Patrick Hanrahan, Marc S. Levoy, Mark A. Horowitz
  • Technique for Determining Performance Characteristics Of Electronic Devices And Systems
    Publication number: 20140070819
    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: Application
    Filed: June 18, 2013
    Publication date: March 13, 2014
    Inventors: Haw-Jyh Liaw, Xingchao Yuan, Mark A. Horowitz
  • IMAGING ARRANGEMENTS AND METHODS THEREFOR
    Publication number: 20140049663
    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: February 20, 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
  • 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