Patents by Inventor Shyun Liu

Shyun Liu 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).

  • Parasitically powered microprocessor capable of transmitting data over a single data line and ground
    Patent number: 6412072
    Abstract: An electronic module having at least a microprocessor and co-processor on a single integrated circuit. The electronic module can be contained in a small housing. The electronic module provides secure bidirectional data communication via a data bus. The electronic module may include an integrated circuit comprising a microprocessor, and a co-processor adapted to handle 1,024-bit modulo mathematics primarily aimed at RSA calculations. The electronic module is preferably contained in a small token sized metallic container and will preferably communicate via a single wire data bus which uses a one-wire protocol.
    Type: Grant
    Filed: February 5, 2001
    Date of Patent: June 25, 2002
    Assignee: Dallas Semiconductor Corporation
    Inventors: Wendell Little, Andreas Curiger, Stephen N. Grider, David A. Bunsey, James E. Bartling, Shyun Liu, Bradley M. Harrington
  • Microprocessor having low power internal oscillator capabilities
    Publication number: 20010023489
    Abstract: An 8051 microprocessor core having an ability to operate via an external crystal oscillator or be switched to operate in a low power mode via an internal ring oscillator.
    Type: Application
    Filed: April 17, 2001
    Publication date: September 20, 2001
    Applicant: Dallas Semiconductor Corporation
    Inventors: Shyun Liu, Wendell Little, Steve Grider, Matt Adams
  • Secure module with microprocessor and co-processor
    Publication number: 20010011353
    Abstract: An electronic module having at least a microprocessor and co-processor on a single integrated circuit. The electronic module can be contained in a small housing. The electronic module provides secure bidirectional data communication via a data bus. The electronic module may include an integrated circuit comprising a microprocessor, and a co-processor adapted to handle 1,024-bit modulo mathematics primarily aimed at RSA calculations. The electronic module is preferably contained in a small token sized metallic container and will preferably communicate via a single wire data bus which uses a one-wire protocol.
    Type: Application
    Filed: February 5, 2001
    Publication date: August 2, 2001
    Applicant: Dallas Semiconductor Corporation
    Inventors: Wendell Little, Andreas Curiger, Stephen N. Grider, David A. Bunsey, James E. Bartling, Shyun Liu, Bradley M. Harrington
  • Microprocessor with coprocessing capabilities for secure transactions and quick clearing capabilities
    Patent number: 6219789
    Abstract: An electronic module having at least a microprocessor and co-processor on a single integrated circuit. The electronic module can be contained in a small housing. The electronic module provides secure bidirectional data communication via a data bus. The electronic module may include an integrated circuit comprising a microprocessor, and a co-processor adapted to handle 1,024-bit modulo mathematics primarily aimed at RSA calculations. The electronic module is preferably contained in a small token sized metallic container and will preferably communicate via a single wire data bus which uses a one-wire protocol.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: April 17, 2001
    Assignee: Dallas Semiconductor Corporation
    Inventors: Wendell Little, Andreas Curiger, Stephen N. Grider, David A. Bunsey, James E. Bartling, Shyun Liu, Bradley M. Harrington
  • Microcontroller with selectable oscillator source
    Patent number: 6219797
    Abstract: An 8051 microprocessor core having an ability to operate via an external crystal oscillator or be switched to operate in a low power mode via an internal ring oscillator.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: April 17, 2001
    Assignee: Dallas Semiconductor Corporation
    Inventors: Shyun Liu, Wendell Little, Steve Grider, Matt Adams
  • Secure module with microprocessor and co-processor
    Patent number: 5832207
    Abstract: An electronic module having at least a microprocessor and co-processor on a single integrated circuit. The electronic module can be contained in a small housing. The electronic module provides secure bidirectional data communication via a data bus. The electronic module may include integrated circuit comprising a microprocessor, and a co-processor adapted to handle 1,024-bit modulo mathematics primarily aimed at RSA calculations. The electronic module is preferably contained in a small token sized metallic container and will preferably communicate via a single wire data bus which uses a one-wire protocol.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: November 3, 1998
    Assignee: Dallas Semiconductor Corporation
    Inventors: Wendell Little, Andreas Curiger, Stephen N. Grider, David A. Bunsey, James E. Bartling, Shyun Liu, Bradley M. Harrington