Patents by Inventor Leon Sea Jiunn Wong

Leon Sea Jiunn Wong 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: 7554844
    Abstract: Techniques are used to store information in a medium such as the memory cells of an integrated circuit, and also retrieval of information from the medium. The integrated circuit includes nonvolatile memory cells (416) capable of multilevel or analog voltage level storage. The integrated circuit may store or record information in analog or digital form, or both. Information is stored in and retrieved from the integrated circuit using a user-selected sampling frequency. The user's selection of the sampling frequency is stored within the integrated circuit.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: June 30, 2009
    Assignee: SanDisk Corporation
    Inventors: Carl W. Werner, Andreas M. Haeberli, Leon Sea Jiunn Wong, Cheng-Yuan Michael Wang, Hock C. So, Sau C. Wong
  • Patent number: 7298670
    Abstract: Techniques are used to store information in a medium such as the memory cells of an integrated circuit, and also retrieval of information from the medium. The integrated circuit includes nonvolatile memory cells (416) capable of multilevel or analog voltage level storage. The integrated circuit may store or record information in analog or digital form, or both. Information is stored in and retrieved from the integrated circuit using a user-selected sampling frequency. The user's selection of the sampling frequency is stored within the integrated circuit.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: November 20, 2007
    Assignee: SanDisk Corporation
    Inventors: Carl W. Werner, Andreas M. Haeberli, Leon Sea Jiunn Wong, Cheng-Yuan Michael Wang, Hock C. So, Sau C. Wong
  • Patent number: 7106632
    Abstract: Techniques are used to store information in a medium such as the memory cells of an integrated circuit, and also retrieval of information from the medium. The integrated circuit includes nonvolatile memory cells (416) capable of multilevel or analog voltage level storage. The integrated circuit may store or record information in analog or digital form, or both. Information is stored in and retrieved from the integrated circuit using a user-selected sampling frequency. The user's selection of the sampling frequency is stored within the integrated circuit.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: September 12, 2006
    Assignee: SanDisk Corporation
    Inventors: Carl W. Werner, Andreas M. Haeberli, Leon Sea Jiunn Wong, Cheng-Yuan Michael Wang, Hock C. So, Sau C. Wong
  • Patent number: 6760262
    Abstract: An integrated circuit detects the voltage level of the supply voltage to the integrated circuit. Circuity on the integrated circuit including the charge pump circuity adjusts to operate more effectively or efficiently at the voltage level of the supply voltage.
    Type: Grant
    Filed: March 4, 2003
    Date of Patent: July 6, 2004
    Assignee: SanDisk Corporation
    Inventors: Andreas M. Haeberli, Sau C. Wong, Hock C. So, Carl W. Werner, Cheng-Yuan Michael Wang, Leon Sea Jiunn Wong
  • Publication number: 20030202389
    Abstract: Techniques are used to store information in a medium such as the memory cells of an integrated circuit, and also retrieval of information from the medium. The integrated circuit includes nonvolatile memory cells (416) capable of multilevel or analog voltage level storage. The integrated circuit may store or record information in analog or digital form, or both. Information is stored in and retrieved from the integrated circuit using a user-selected sampling frequency. The user's selection of the sampling frequency is stored within the integrated circuit.
    Type: Application
    Filed: February 5, 2003
    Publication date: October 30, 2003
    Applicant: SanDisk Corporation, a Delaware Corporation
    Inventors: Carl W. Werner, Andreas M. Haeberli, Leon Sea Jiunn Wong, Cheng-Yuan Michael Wang, Hock C. So, Sau C. Wong
  • Publication number: 20030161171
    Abstract: An integrated circuit detects the voltage level of the supply voltage to the integrated circuit. Circuity on the integrated circuit including the charge pump circuity adjusts to operate more effectively or efficiently at the voltage level of the supply voltage.
    Type: Application
    Filed: March 4, 2003
    Publication date: August 28, 2003
    Applicant: INVOX TECHNOLOGY, a California Corporation
    Inventors: Andreas M. Haeberli, Sau C. Wong, Hock C. So, Carl W. Werner, Cheng-Yuan Michael Wang, Leon Sea Jiunn Wong
  • Patent number: 6556465
    Abstract: An integrated circuit detects the voltage level of the supply voltage to the integrated circuit. Circuity on the integrated circuit including the charge pump circuity adjusts to operate more effectively or efficiently at the voltage level of the supply voltage.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: April 29, 2003
    Assignee: SanDisk Corporation
    Inventors: Andreas M. Haeberli, Sau C. Wong, Hock C. So, Carl W. Werner, Cheng-Yuan Michael Wang, Leon Sea Jiunn Wong
  • Patent number: 6549456
    Abstract: Techniques are used to store information in a medium such as the memory cells of an integrated circuit, and also retrieval of information from the medium. The integrated circuit includes nonvolatile memory cells (416) capable of multilevel or analog voltage level storage. The integrated circuit may store or record information in analog or digital form, or both. Information is stored in and retrieved from the integrated circuit using a user-selected sampling frequency. The user's selection of the sampling frequency is stored within the integrated circuit.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: April 15, 2003
    Assignee: SanDisk Corporation
    Inventors: Carl W. Werner, Andreas M. Haeberli, Leon Sea Jiunn Wong, Cheng-Yuan Michael Wang, Hock C. So, Sau C. Wong
  • Publication number: 20020149987
    Abstract: An integrated circuit detects the voltage level of the supply voltage to the integrated circuit. Circuity on the integrated circuit including the charge pump circuity adjusts to operate more effectively or efficiently at the voltage level of the supply voltage.
    Type: Application
    Filed: March 27, 2002
    Publication date: October 17, 2002
    Applicant: INVOX TECHNOLOGY
    Inventors: Andreas M. Haeberli, Sau C. Wong, Hock C. So, Carl W. Werner, Cheng-Yuan Michael Wang, Leon Sea Jiunn Wong
  • Publication number: 20020136044
    Abstract: Techniques are used to store information in a medium such as the memory cells of an integrated circuit, and also retrieval of information from the medium. The integrated circuit includes nonvolatile memory cells (416) capable of multilevel or analog voltage level storage. The integrated circuit may store or record information in analog or digital form, or both. Information is stored in and retrieved from the integrated circuit using a user-selected sampling frequency. The user's selection of the sampling frequency is stored within the integrated circuit.
    Type: Application
    Filed: June 29, 1999
    Publication date: September 26, 2002
    Inventors: CARL W. WERNER, ANDREAS M. HAEBERLI, LEON SEA JIUNN WONG, CHENG-YUAN MICHAEL WANG, HOCK C. SO, SAU C. WONG
  • Patent number: 6370075
    Abstract: An integrated circuit detects the voltage level of the supply voltage to the integrated circuit. Circuity on the integrated circuit including the charge pump circuity adjusts to operate more effectively or efficiently at the voltage level of the supply voltage.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: April 9, 2002
    Assignee: SanDisk Corporation
    Inventors: Andreas M. Haeberli, Sau C. Wong, Hock C. So, Carl W. Werner, Cheng-Yuan Michael Wang, Leon Sea Jiunn Wong
  • Patent number: 6208542
    Abstract: An integrated circuit stores analog or digital information, or both, in memory cells (416). The memory cells provide analog or multilevel storage. Analog information is provided through an analog signal input (405), and digital information is provided through a digital signal input (407). A scheme for storing digital information is consistent with the scheme used to store analog information. Data is retrieved from the memory cells, and output to the analog or digital signal output (454, 463) depending on the type of data. A digital reference generator reference generator (425) generates various analog equivalent voltages for the digital signal input.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: March 27, 2001
    Assignee: SanDisk Corporation
    Inventors: Cheng-Yuan Michael Wang, Andreas M. Haeberli, Carl W. Werner, Sau C. Wong, Hock C. So, Leon Sea Jiunn Wong
  • Patent number: 6185119
    Abstract: An integrated circuit memory is capable of storing analog information without the need for A/D conversion. Samples of a analog signal input are stored in nonvolatile memory cells. The integrated circuit is also capable of storing digital information in digital form. The sampling rate at which the analog signal input is sampled is user selectable. An internal signal path of the integrated circuit memory is differential, which enhances the precision with which the analog signal is stored in the memory cells.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: February 6, 2001
    Assignee: SanDisk Corporation
    Inventors: Andreas M. Haeberli, Carl W. Werner, Hock C. So, Sau C. Wong, Cheng-Yuan Michael Wang, Leon Sea Jiunn Wong
  • Patent number: 6184726
    Abstract: Level shifter circuits are used to configure analog or multilevel memory cells. A level shifter circuit generates an output voltage that is above the input voltage by an offset voltage value. The magnitude of this offset voltage or the relationship between the input and output voltages of the level shifter is adjustable or programmably selectable. Adjustments can be made after the integrated circuits is fabricated and packaged. Adjustments are made by configuring bits of data in the integrated circuit to indicate the offset voltage or other parameters. These configuration bits are implemented using latches, flip-flops, registers, memory cells, or other storage circuits.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: February 6, 2001
    Assignee: SanDisk Corporation
    Inventors: Andreas M. Haeberli, Carl W. Werner, Cheng-Yuan Michael Wang, Hock C. So, Leon Sea Jiunn Wong, Sau C. Wong