Patents by Inventor Gary Chang

Gary Chang 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: 7742063
    Abstract: An apparatus comprising a buffer circuit, a rotation circuit and a memory. The buffer may be configured to store original image data in one or more sub-matrices. The rotation circuit may be configured to (i) produce rotated data and (ii) store the rotated data in a transposed matrix. The memory may be configured to position the rotated data in the transposed matrix. The transposed matrix comprises final image data rotated by a predetermined angle from the original image data.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: June 22, 2010
    Assignee: LSI Corporation
    Inventors: Ho-Ming Leung, Gary Chang, Wern-Yan Koe
  • Patent number: 7362767
    Abstract: One aspect of the present invention concerns a method for controlling the frequency of oscillation of a local clock signal comprising the steps of (A) generating the clock signal in response to a first control signal, (B) generating the first control signal in response to one of a plurality of adjustment signals selected in response to a second control signal and (C) generating the second control signal in response to a comparison between a local timestamp and an external timestamp.
    Type: Grant
    Filed: July 22, 2003
    Date of Patent: April 22, 2008
    Assignee: LSI Logic Corporation
    Inventors: Omer F. Orberk, Ho-Ming Leung, Chiu-Tsun Chu, Gary Chang
  • Publication number: 20070009181
    Abstract: An apparatus comprising a buffer circuit, a rotation circuit and a memory. The buffer may be configured to store original image data in one or more sub-matrices. The rotation circuit may be configured to (i) produce rotated data and (ii) store the rotated data in a transposed matrix. The memory may be configured to position the rotated data in the transposed matrix. The transposed matrix comprises final image data rotated by a predetermined angle from the original image data.
    Type: Application
    Filed: July 7, 2005
    Publication date: January 11, 2007
    Inventors: Ho-Ming Leung, Gary Chang, Wern-Yan Koe
  • Patent number: 7111199
    Abstract: An apparatus comprising (i) a first circuit configured to generate one or more node signals at one or more internal nodes and (ii) a second circuit configured to present one or more of the node signals and a trigger signal in response to one or more control signals.
    Type: Grant
    Filed: July 8, 2002
    Date of Patent: September 19, 2006
    Assignee: LSI Logic Corporation
    Inventors: Ho-Ming Leung, Fan Zhang, Chiu-Tsun Chu, Gary Chang
  • Patent number: 6920510
    Abstract: An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to transfer data between a plurality of first ports and a second port via a single port memory in response to one or more control signals. The second circuit may be configured to generate the one or more control signals, wherein the memory is time shared among the second port and the plurality of first ports.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: July 19, 2005
    Assignee: LSI Logic Corporation
    Inventors: Gary Chang, Hong-men Su
  • Publication number: 20050018692
    Abstract: One aspect of the present invention concerns a method for controlling the frequency of oscillation of a local clock signal comprising the steps of (A) generating the clock signal in response to a first control signal, (B) generating the first control signal in response to one of a plurality of adjustment signals selected in response to a second control signal and (C) generating the second control signal in response to a comparison between a local timestamp and an external timestamp.
    Type: Application
    Filed: July 22, 2003
    Publication date: January 27, 2005
    Inventors: Omer Orberk, Ho-Ming Leung, Chiu-Tsun Chu, Gary Chang
  • Patent number: 6798687
    Abstract: A system and method for effectively implementing a high-speed DRAM device may include memory cells that each have a bitline for transferring storage data, a wordline for enabling an accelerated-write operation in the memory cell, and a data storage node with a corresponding cell voltage. An accelerated-write circuit may then directly provide the storage data to an appropriate bitline in a pre-toggled state in response to one or more accelerated-write enable signals. The corresponding cell voltage may therefore begin a state-change transition towards the pre-toggled state immediately after the wordline is activated to successfully reach a full-state level before the wordline is deactivated during a high-speed memory cycle.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: September 28, 2004
    Assignees: Sony Corporation, Sony Electronics Inc.
    Inventors: Kuoyuan Hsu, Gary Chang, Patrick Chuang
  • Publication number: 20040114420
    Abstract: A system and method for effectively implementing a high-speed DRAM device may include memory cells that each have a bitline for transferring storage data, a wordline for enabling an accelerated-write operation in the memory cell, and a data storage node with a corresponding cell voltage. An accelerated-write circuit may then directly provide the storage data to an appropriate bitline in a pre-toggled state in response to one or more accelerated-write enable signals. The corresponding cell voltage may therefore begin a state-change transition towards the pre-toggled state immediately after the wordline is activated to successfully reach a full-state level before the wordline is deactivated during a high-speed memory cycle.
    Type: Application
    Filed: December 16, 2002
    Publication date: June 17, 2004
    Applicants: Sony Corporation, Sony Electronics Inc.
    Inventors: Kuoyuan Hsu, Gary Chang, Patrick Chuang
  • Publication number: 20040004279
    Abstract: An apparatus comprising (i) a first circuit configured to generate one or more node signals at one or more internal nodes and (ii) a second circuit configured to present one or more of the node signals and a trigger signal in response to one or more control signals.
    Type: Application
    Filed: July 8, 2002
    Publication date: January 8, 2004
    Applicant: LSI LOGIC CORPORATION
    Inventors: Ho-Ming Leung, Fan Zhang, Chiu-Tsun Chu, Gary Chang
  • Publication number: 20030229734
    Abstract: An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to transfer data between a plurality of first ports and a second port via a single port memory in response to one or more control signals. The second circuit may be configured to generate the one or more control signals, wherein the memory is time shared among the second port and the plurality of first ports.
    Type: Application
    Filed: June 5, 2002
    Publication date: December 11, 2003
    Applicant: LSI LOGIC CORPORATION
    Inventors: Gary Chang, Hong-Men Su
  • Patent number: 5251305
    Abstract: An apparatus for preventing bus contention among a plurality of data sources is described which creates signals to be used to disable two of three data sources which share a common bus immediately prior to a bus access cycle. The circuit employs a negative edge triggered flip-flop. This flip-flop generates disable signals which are shifted in phase by 90.degree. with respect to the bus access clock signal. These signals are active one-quarter of a clock cycle before a new bus cycle begins. The early disable serves to clear the bus for access by substantially eliminating the possibility that a slowly responding disabled data source is still active while a quickly responding enabled data source has just become active. The early disabling of the data signals does not result in loss of data. When all data sources on the bus are turned off, a high signal simply goes higher and a low signal rises slowly.
    Type: Grant
    Filed: April 4, 1991
    Date of Patent: October 5, 1993
    Assignee: Unisys Corporation
    Inventors: Philip A. Murphy, Jr., Wayne A. Genetti, Gunnar K. Gunnarsson, Edward J. Pullin, Gary Chang-Feng Wu
  • Patent number: 4769791
    Abstract: The circuit provides one or several banks of capacitors, the capacitors in each bank being identical in size. A single fuse for each bank of capacitors controls the connection of the capacitors to a pulse-width-determining node on each of the ATD (address-transition-detect) pulse generators of the SRAM device. Depending on the position of the fuse in the circuit, the blowing of a single fuse can either add to the capacitance at the ATD nodes or substract from it. Thus the pulse-width of all ATD pulse generators can be adjusted shorter or longer simultaneously by blowing a single fuse only.
    Type: Grant
    Filed: August 6, 1986
    Date of Patent: September 6, 1988
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Jiunn-Yau Liou, May-Lin Lee, Moon S. Kok, Gary Chang