Patents by Inventor Steve Choi

Steve Choi 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: 7848167
    Abstract: A voltage regulator is provided. The voltage regulator provides an output voltage that is proportional to a digital multi-bit select signal. The voltage regulator includes a coarse voltage regulator and a fine voltage regulator. The coarse voltage regulator provides a coarse output voltage based on an output of a voltage divider selected based on the most significant bits of the select signal. The fine voltage regulator provides the output voltage from the coarse output voltage. The output of the fine voltage regulator is adjusted by adjusting the output of an adjustable current source that is provided to a resistor that is coupled between the output and one of the inputs of the fine voltage regulator.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: December 7, 2010
    Assignee: Spansion LLC
    Inventors: Soo-yong Park, Boon-Aik Ang, Steve Choi
  • Patent number: 7848140
    Abstract: A memory system includes memory cells arranged in sectors. A decoder corresponding to a sector disables memory cells having a defective top gate. The decoder may include a low voltage or high voltage latch for the disabling. A top gate handling algorithm is included. The memory system may include dynamic top gate coupling. A programming algorithm and waveforms with top gate handling is included.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: December 7, 2010
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Hieu Van Tran, Hung Quoc Nguyen, Anh Ly, Sheng-Hsiung Hsueh, Sang Thanh Nguyen, Loc B. Hoang, Steve Choi, Thuan T. Vu
  • Patent number: 7778080
    Abstract: A memory system includes memory cells arranged in sectors. A decoder corresponding to a sector disables memory cells having a defective top gate. The decoder may include a low voltage or high voltage latch for the disabling. A top gate handling algorithm is included. The memory system may include dynamic top gate coupling. A programming algorithm and waveforms with top gate handling is included.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: August 17, 2010
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Hieu Van Tran, Hung Quoc Nguyen, Anh Ly, Sheng-Hsiung Hsueh, Sang Thanh Nguyen, Loc B. Hoang, Steve Choi, Thuan T. Vu
  • Publication number: 20100097876
    Abstract: A voltage regulator is provided. The voltage regulator provides an output voltage that is proportional to a digital multi-bit select signal. The voltage regulator includes a coarse voltage regulator and a fine voltage regulator. The coarse voltage regulator provides a coarse output voltage based on an output of a voltage divider selected based on the most significant bits of the select signal. The fine voltage regulator provides the output voltage from the coarse output voltage. The output of the fine voltage regulator is adjusted by adjusting the output of an adjustable current source that is provided to a resistor that is coupled between the output and one of the inputs of the fine voltage regulator.
    Type: Application
    Filed: October 21, 2008
    Publication date: April 22, 2010
    Applicant: Spansion LLC
    Inventors: Soo-Yong Park, Boon-Aik Ang, Steve Choi
  • Publication number: 20100039095
    Abstract: In the present method of measuring the current of a first current source, the current thereof may be combined with either the current of a second current source, or the current of a third current source. Based on a combination of the current of the first current source and either (a) the current of the second current source or (b) the current of the third current source, a digital output is provided. If this digital output is of a first value, the state of combining the current of the first current source with the current of the second current source becomes in effect. If this digital output is of a second value, the state of combining the current of the first current source with the current of the second current source becomes in effect.
    Type: Application
    Filed: August 15, 2008
    Publication date: February 18, 2010
    Inventors: Boon-Aik Ang, Soo-yong Park, Steve Choi
  • Patent number: 7663921
    Abstract: Systems and methods are disclosed including memory cells arranged in sectors. In one exemplary implementation, each memory cell may include a top gate, a source, a top gate line coupling memory cells in a sector, and a word line coupling memory cells together. Moreover, the top gate line may be dynamically coupled to the word line. Other exemplary implementations may relate to drivers for driving the word line and/or top gate line, multilevel memory cell, and/or floating gate line features.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: February 16, 2010
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Hieu Van Tran, Hung Quoc Nguyen, Anh Ly, Sheng-Hsiung Hsueh, Sang Thanh Nguyen, Loc B. Hoang, Steve Choi, Thuan T. Vu
  • Publication number: 20090323415
    Abstract: A memory system includes memory cells arranged in sectors. A decoder corresponding to a sector disables memory cells having a defective top gate. The decoder may include a low voltage or high voltage latch for the disabling. A top gate handling algorithm is included. The memory system may include dynamic top gate coupling. A programming algorithm and waveforms with top gate handling is included.
    Type: Application
    Filed: July 22, 2009
    Publication date: December 31, 2009
    Applicant: Silicon Storage Technology, Inc.
    Inventors: Hieu Van Tran, Hung Quoc Nguyen, Anh Ly, Sheng-Hsiung Hsueh, Sang Thanh Nguyen, Loc B. Hoang, Steve Choi, Thuan T. Vu
  • Patent number: 7626863
    Abstract: A memory system includes memory cells arranged in sectors. A decoder corresponding to a sector disables memory cells having a defective top gate. The decoder may include a low voltage or high voltage latch for the disabling. A top gate handling algorithm is included. The memory system may include dynamic top gate coupling. A programming algorithm and waveforms with top gate handling is included.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: December 1, 2009
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Hieu Van Tran, Hung Quoc Nguyen, Anh Ly, Sheng-Hsiung Hsueh, Sang Thanh Nguyen, Loc B. Hoang, Steve Choi, Thuan T. Vu
  • Patent number: 7567458
    Abstract: A memory system includes memory cells arranged in sectors. A decoder corresponding to a sector disables memory cells having a defective top gate. The decoder may include a low voltage or high voltage latch for the disabling. A top gate handling algorithm is included. The memory system may include dynamic top gate coupling. A programming algorithm and waveforms with top gate handling is included.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: July 28, 2009
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Hieu Van Tran, Hung Quoc Nguyen, Anh Ly, Sheng-Hsiung Hsueh, Sang Thanh Nguyen, Loc B. Hoang, Steve Choi, Thuan T. Vu
  • Publication number: 20090067239
    Abstract: A memory system includes memory cells arranged in sectors. A decoder corresponding to a sector disables memory cells having a defective top gate. The decoder may include a low voltage or high voltage latch for the disabling. A top gate handling algorithm is included. The memory system may include dynamic top gate coupling. A programming algorithm and waveforms with top gate handling is included.
    Type: Application
    Filed: November 7, 2008
    Publication date: March 12, 2009
    Applicant: Silicon Storage Technology, Inc.
    Inventors: Hieu Van Tran, Hung Quoc Nguyen, Anh Ly, Sheng-Hsiung Hsueh, Sang Thanh Nguyen, Loc B. Hoang, Steve Choi, Thuan T. Vu
  • Publication number: 20090052248
    Abstract: A memory system includes memory cells arranged in sectors. A decoder corresponding to a sector disables memory cells having a defective top gate. The decoder may include a low voltage or high voltage latch for the disabling. A top gate handling algorithm is included. The memory system may include dynamic top gate coupling. A programming algorithm and waveforms with top gate handling is included.
    Type: Application
    Filed: August 28, 2008
    Publication date: February 26, 2009
    Applicant: Silicon Storage Technology, Inc.
    Inventors: Hieu Van Tran, Hung Quoc Nguyen, Anh Ly, Sheng-Hsiung Hsueh, Sang Thanh Nguyen, Loc B. Hoang, Steve Choi, Thuan T. Vu
  • Patent number: 7447073
    Abstract: A memory system includes memory cells arranged in sectors. A decoder corresponding to a sector disables memory cells having a defective top gate. The decoder may include a low voltage or high voltage latch for the disabling. A top gate handling algorithm is included. The memory system may include dynamic top gate coupling. A programming algorithm and waveforms with top gate handling is included.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: November 4, 2008
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Hieu Van Tran, Hung Quoc Nguyen, Anh Ly, Sheng-Hsiung Hsueh, Sang Thanh Nguyen, Loc B. Hoang, Steve Choi, Thuan T. Vu
  • Publication number: 20070147131
    Abstract: A memory system includes memory cells arranged in sectors. A decoder corresponding to a sector disables memory cells having a defective top gate. The decoder may include a low voltage or high voltage latch for the disabling. A top gate handling algorithm is included. The memory system may include dynamic top gate coupling. A programming algorithm and waveforms with top gate handling is included.
    Type: Application
    Filed: February 16, 2007
    Publication date: June 28, 2007
    Inventors: Hieu Tran, Hung Nguyen, Anh Ly, Sheng-Hsiung Hsueh, Sang Nguyen, Loc Hoang, Steve Choi, Thuan Vu
  • Publication number: 20070147111
    Abstract: A memory system includes memory cells arranged in sectors. A decoder corresponding to a sector disables memory cells having a defective top gate. The decoder may include a low voltage or high voltage latch for the disabling. A top gate handling algorithm is included. The memory system may include dynamic top gate coupling. A programming algorithm and waveforms with top gate handling is included.
    Type: Application
    Filed: February 16, 2007
    Publication date: June 28, 2007
    Inventors: Hieu Tran, Hung Nguyen, Anh Ly, Sheng-Hsiung Hsueh, Sang Nguyen, Loc Hoang, Steve Choi, Thuan Vu
  • Publication number: 20070070703
    Abstract: A memory system includes memory cells arranged in sectors. A decoder corresponding to a sector disables memory cells having a defective top gate. The decoder may include a low voltage or high voltage latch for the disabling. A top gate handling algorithm is included. The memory system may include dynamic top gate coupling. A programming algorithm and waveforms with top gate handling is included.
    Type: Application
    Filed: September 26, 2005
    Publication date: March 29, 2007
    Inventors: Hieu Tran, Hung Nguyen, Anh Ly, Sheng-Hsiung Hsueh, Sang Nguyen, Loc Hoang, Steve Choi, Thuan Vu
  • Patent number: 6972994
    Abstract: A circuit to screen for defects in an addressable line in a non-volatile memory array comprises a current mirror circuit which has a plurality of mirroring stages. The current mirror circuit is connected to the addressable line and receives a control signal and mirrors the control signal to provide a current to the addressable line. In a preferred embodiment, the current mirror circuit provides a high voltage current to the addressable line which is used to effectuate an operation such as program or erase to the memory cells connected to the addressable line. The change in state or the absence of change in state of the memory cells connected to the addressable line can be used to screen for defects in the addressable line.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: December 6, 2005
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Hung Q. Nguyen, Steve Choi, Loc Hoang, Alexander Kotov
  • Publication number: 20050201152
    Abstract: A circuit to screen for defects in an addressable line in a non-volatile memory array comprises a current mirror circuit which has a plurality of mirroring stages. The current mirror circuit is connected to the addressable line and receives a control signal and mirrors the control signal to provide a current to the addressable line. In a preferred embodiment, the current mirror circuit provides a high voltage current to the addressable line which is used to effectuate an operation such as program or erase to the memory cells connected to the addressable line. The change in state or the absence of change in state of the memory cells connected to the addressable line can be used to screen for defects in the addressable line.
    Type: Application
    Filed: March 9, 2004
    Publication date: September 15, 2005
    Inventors: Hung Nguyen, Steve Choi, Loc Hoang, Alexander Kotov
  • Patent number: 6381918
    Abstract: A water-based wallboard adhesive including water, a binder, and a particulate filler is described. The adhesive can have an open time greater than about 5 minutes and a green strength sufficient to support a 4 foot by 8 foot wallboard on a wall frame without fasteners in the field of the wallboard within 15 minutes of applying the adhesive to the wallboard and wall frame.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: May 7, 2002
    Assignee: Illinois Tool Works Inc.
    Inventors: Edward Stein, Steve Choi
  • Publication number: 20010054482
    Abstract: A water-based wallboard adhesive including water, a binder, and a particulate filler is described. The adhesive can have an open time greater than about 5 minutes and a green strength sufficient to support a 4 foot by 8 foot wallboard on a wall frame without fasteners in the field of the wallboard within 15 minutes of applying the adhesive to the wallboard and wall frame.
    Type: Application
    Filed: July 31, 2001
    Publication date: December 27, 2001
    Inventors: Edward Stein, Steve Choi
  • Patent number: 6300400
    Abstract: A water-based wallboard adhesive including water, a binder, and a particulate filler is described. The adhesive can have an open time greater than about 5 minutes and a green strength sufficient to support a 4 foot by 8 foot wallboard on a wall frame without fasteners in the field of the wallboard within 15 minutes of applying the adhesive to the wallboard and wall frame.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: October 9, 2001
    Assignee: Illinois Tool Works Inc.
    Inventors: Edward Stein, Steve Choi