Patents by Inventor David A. Secker

David A. Secker 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).

  • Publication number: 20150266315
    Abstract: A printer includes: a stationary inkjet printhead having an associated print zone; and a feed mechanism for feeding print media past the printhead in a media feed direction. The print media are guided through the print zone such that the print media converge towards the printhead in the media feed direction.
    Type: Application
    Filed: June 5, 2015
    Publication date: September 24, 2015
    Inventors: Samuel Mallinson, Geordie McBain, Aidan O'Mahony, David Secker
  • Publication number: 20150251421
    Abstract: An inkjet nozzle device includes: a nozzle chamber having a floor, a roof and perimeter sidewalls extending between the floor and the roof, wherein a nozzle aperture is defined in the roof; a heating element for generating gas bubbles in the nozzle chamber so as to eject ink through the nozzle aperture, wherein a centroid of the heating element is aligned with a centroid of the nozzle aperture; and a pair of chamber inlets defined in the floor of the nozzle chamber, the chamber inlets being symmetrically disposed about the centroid of the heating element. The inkjet nozzle device has a pair of orthogonal symmetry planes passing through the centroid of the nozzle aperture.
    Type: Application
    Filed: February 20, 2015
    Publication date: September 10, 2015
    Inventors: Sam Mallinson, Philip Palma, David Secker, Paul Reichl, Glenn Horrocks, Angus North
  • Patent number: 9117496
    Abstract: A memory device comprising a programmable command-and-address (CA) interface and/or a programmable data interface is described. In an operational mode, two or more CA interfaces may be active. In another operational mode, at least one, but not all, CA interfaces may be active. In an operational mode, all of the data interfaces may be active. In another operational mode, at least one, but not all, data interfaces may be active. The memory device can include circuitry to select: an operational mode; a sub-mode within an operational mode; one or more CA interfaces as the active CA interface(s); a main CA interface from multiple active CA interfaces; and/or one or more data interfaces as the active data interfaces. The circuitry may perform these selection(s) based on one or more bits in one or more registers and/or one or more signals received on one or more pins.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: August 25, 2015
    Assignee: RAMBUS INC.
    Inventors: Ian Shaeffer, Lawrence Lai, Fan Ho, David A. Secker, Wayne S. Richardson, Akash Bansal, Brian S. Leibowitz, Kyung Suk Oh
  • Publication number: 20150221589
    Abstract: An integrated circuit device is disclosed. The integrated circuit device includes a semiconductor die fabricated by a front-end semiconductor process and having oppositely disposed planar surfaces. The semiconductor die is formed with semiconductor devices, power supply circuitry coupled to the semiconductor devices, decoupling capacitance circuitry, and through-vias. The through-vias include a first group of vias coupled to the power supply circuitry and a second group of vias coupled to the decoupling capacitance circuitry. Conductors are formed in a first metal layer disposed on the semiconductor die in accordance with a back-end semiconductor process. The conductors are configured to couple to the first and second groups of through-vias to establish conductive paths from the power supply circuitry to the decoupling capacitance circuitry.
    Type: Application
    Filed: April 9, 2015
    Publication date: August 6, 2015
    Inventors: David Secker, Ling Yang, Chanh Tran, Ying Ji
  • Publication number: 20150181746
    Abstract: A rack unit configuration is described that includes a first printed circuit board (PCB) assembly interleaved with a second PCB assembly that is inverted with respect to the first PCB assembly. The configuration of the first PCB assembly and the second PCB assembly allow for increased component and power densities within computing systems, memory systems, etc. The increased density may be achieved while allowing sufficient mechanical clearance to allow easy component replacement and servicing (e.g., and hot pluggability). Power density may also be increased with PCB assemblies including nested and interleaved power modules.
    Type: Application
    Filed: December 12, 2014
    Publication date: June 25, 2015
    Inventors: Donald R. MULLEN, Chi-Ming YEUNG, David A. SECKER
  • Publication number: 20150108656
    Abstract: Disclosed is a package-on-package (PoP) assembly comprises a two-tiered windowed ball grid array (BGA) and a system on a chip (SoC) package. Window openings in the two tiers of the BGA are of different sizes to allow for wirebond landing pads on the first tier. A DRAM die is mounted to the BGA flipped over (i.e., wirebond pads facing the BGA package.) The DRAM die is wirebonded through the window in the BGA. For multi-channel systems and higher memory capacity, the DRAM die will have low-cost through-silicon vias (TSVs) that connect to stacked DRAM die(s). The stacked DRAM dies may be offset or rotated to align active TSVs with passive TSVs thereby enabling unique connections to certain DRAM dies in the stack.
    Type: Application
    Filed: October 14, 2014
    Publication date: April 23, 2015
    Inventors: Nitin Juneja, Wendemagegnehu Beyene, David A. Secker, Ely K. Tsern
  • Patent number: 9006907
    Abstract: An integrated circuit device is disclosed. The integrated circuit device includes a semiconductor die fabricated by a front-end semiconductor process and having oppositely disposed planar surfaces. The semiconductor die is formed with semiconductor devices, power supply circuitry coupled to the semiconductor devices, decoupling capacitance circuitry, and through-vias. The through-vias include a first group of vias coupled to the power supply circuitry and a second group of vias coupled to the decoupling capacitance circuitry. Conductors are formed in a first metal layer disposed on the semiconductor die in accordance with a back-end semiconductor process. The conductors are configured to couple to the first and second groups of through-vias to establish conductive paths from the power supply circuitry to the decoupling capacitance circuitry.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: April 14, 2015
    Assignee: Rambus Inc.
    Inventors: David Secker, Ling Yang, Chanh Tran, Ying Ji
  • Patent number: 8922245
    Abstract: In an asymmetrically terminated communication system, the power consumed to transmit a particular bit value is adjusted based on whether the bit being output is the second, third, fourth, etc. consecutive bit with the same value after a transition to output the particular bit value. The adjustment of the power consumed to transmit the two or more consecutive bits with the same value may be made by adjusting the driver strength during the second, or subsequent, consecutive bits with the same value. The adjustment of the power consumed is performed on the bit value that consumes the most DC power and the other value is typically not adjusted.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: December 30, 2014
    Assignee: Rambus Inc.
    Inventors: Kyung Suk Oh, Chi-Ming Yeung, David A. Secker
  • Publication number: 20140237152
    Abstract: A memory module comprises a data interface including a plurality of data lines and a plurality of configurable switches coupled between the data interface and a data path to one or more memories. The effective width of the memory module can be configured by enabling or disabling different subsets of the configurable switches. The configurable switches may be controlled by manual switches, by a buffer on the memory module, by an external memory controller, or by the memories on the memory module.
    Type: Application
    Filed: February 18, 2014
    Publication date: August 21, 2014
    Applicant: Rambus Inc.
    Inventors: AMIR AMIRKHANY, SURESH RAJAN, RAVINDRANATH KOLLIPARA, IAN SHAEFFER, DAVID A. SECKER
  • Publication number: 20140043069
    Abstract: In an asymmetrically terminated communication system, the power consumed to transmit a particular bit value is adjusted based on whether the bit being output is the second, third, fourth, etc. consecutive bit with the same value after a transition to output the particular bit value. The adjustment of the power consumed to transmit the two or more consecutive bits with the same value may be made by adjusting the driver strength during the second, or subsequent, consecutive bits with the same value. The adjustment of the power consumed is performed on the bit value that consumes the most DC power and the other value is typically not adjusted.
    Type: Application
    Filed: August 9, 2013
    Publication date: February 13, 2014
    Applicant: Rambus Inc.
    Inventors: Kyung Suk Oh, Chi-Ming Yeung, David A. Secker
  • Publication number: 20130320560
    Abstract: An integrated circuit device is disclosed. The integrated circuit device includes a semiconductor die fabricated by a front-end semiconductor process and having oppositely disposed planar surfaces. The semiconductor die is formed with semiconductor devices, power supply circuitry coupled to the semiconductor devices, decoupling capacitance circuitry, and through-vias. The through-vias include a first group of vias coupled to the power supply circuitry and a second group of vias coupled to the decoupling capacitance circuitry. Conductors are formed in a first metal layer disposed on the semiconductor die in accordance with a back-end semiconductor process. The conductors are configured to couple to the first and second groups of through-vias to establish conductive paths from the power supply circuitry to the decoupling capacitance circuitry.
    Type: Application
    Filed: May 28, 2013
    Publication date: December 5, 2013
    Applicant: Rambus Inc.
    Inventors: David Secker, Ling Yang, Chanh Tran, Ying Ji
  • Patent number: 8588012
    Abstract: Termination of a high-speed signaling link is effected by simultaneously engaging on-die termination structures within multiple integrated-circuit memory devices disposed on the same memory module, and/or within the same integrated-circuit package, and coupled to the high-speed signaling link.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: November 19, 2013
    Assignee: Rambus, Inc.
    Inventors: John Wilson, Joong-Ho Kim, Ravindranath Kollipara, David Secker, Kyung Suk Oh
  • Publication number: 20130194881
    Abstract: One or more pins may be modally assigned to either the command/address (C/A) or data (DQ) blocks of a uniform-package, multi-modal PHY (physical signaling interface) of a memory controller, thus enabling those pins to be used as C/A pins when the PHY is connected to some memory types, and as DQ pins when the PHY is connected to other memory types.
    Type: Application
    Filed: November 7, 2011
    Publication date: August 1, 2013
    Inventors: Steven C. Woo, Amir Amirkhany, Catherine Chen, David Secker, Jie Shen
  • Publication number: 20110314200
    Abstract: Termination of a high-speed signaling link is effected by simultaneously engaging on-die termination structures within multiple integrated-circuit memory devices disposed on the same memory module, and/or within the same integrated-circuit package, and coupled to the high-speed signaling link.
    Type: Application
    Filed: June 1, 2011
    Publication date: December 22, 2011
    Inventors: John Wilson, Joong-Ho Kim, Ravindranath Kollipara, David Secker, Kyung Suk Oh
  • Publication number: 20110049091
    Abstract: A method of photoresist removal with concomitant de-veiling is provided. The method employs a plasma formed from a gas chemistry comprising O2, NH3 and a fluorine-containing gas, such as CF4. The method is particularly suitable for use in MEMS fabrication processes, such as inkjet printhead fabrication.
    Type: Application
    Filed: August 25, 2009
    Publication date: March 3, 2011
    Inventors: Yao Fu, Yi-Wen Tsai, Darrell LaRue McReynolds, David Secker, Valerie Bordelanne, Witold Wiscniewski
  • Patent number: 6538336
    Abstract: A semiconductor device assembly facilitates high-speed communication between an integrated-circuit die and external circuitry. The die is mounted on a wiring board that includes rows of bond sites in which the signal-bearing bond sites are separated by bond sites bearing DC voltage levels. Signal-bearing bond wires extending from the bond sites are thus separated from one another by bond wires at fixed voltage levels. This arrangement improves shielding between signal wires, thereby minimizing cross-talk and facilitating high data rates.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: March 25, 2003
    Assignee: Rambus Inc.
    Inventors: David A. Secker, Nirmal Jain