Patents by Inventor David Alan Du

David Alan Du 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).

  • Method and system for interrupt signaling in an inter-integrated circuit (I2C) bus system
    Patent number: 9959223
    Abstract: Embodiments of a method and system are disclosed. One embodiment of a method for signaling an interrupt in an I2C system that includes a master I2C device and at least one slave I2C device that are connected by an SDA line and an SCL line is disclosed. The method involves, at the slave I2C device, pulling the SDA line low to signal an interrupt and at the slave I2C device, releasing the SDA line in response to either the SCL line having been pulled low or the expiration of a predetermined time period, whichever occurs first. In an embodiment, the predetermined time period is 1 ms.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: May 1, 2018
    Assignee: NXP B.V.
    Inventors: David Alan Du, Anubhav Gupta, Peter James Stonard
  • Method and system for single-line inter-integrated circuit (I2C) bus
    Patent number: 9569386
    Abstract: Embodiments of a system and method are disclosed. One embodiment is an I2C compatible device. The I2C compatible device includes an SDA interface for connection to an SDA line and a single-line I2C module configured to transmit a sync word from the SDA interface over the SDA line and following the sync word, to transmit I2C data from the SDA interface over the SDA line such that digital data is communicated via a single line. In an embodiment, the sync word is a sync byte+NACK.
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: February 14, 2017
    Assignee: NXP B.V.
    Inventor: David Alan Du
  • METHOD AND SYSTEM FOR INTERRUPT SIGNALING IN AN INTER-INTEGRATED CIRCUIT (I2C) BUS SYSTEM
    Publication number: 20140337553
    Abstract: Embodiments of a method and system are disclosed. One embodiment of a method for signaling an interrupt in an I2C system that includes a master I2C device and at least one slave I2C device that are connected by an SDA line and an SCL line is disclosed. The method involves, at the slave I2C device, pulling the SDA line low to signal an interrupt and at the slave I2C device, releasing the SDA line in response to either the SCL line having been pulled low or the expiration of a predetermined time period, whichever occurs first. In an embodiment, the predetermined time period is 1 ms.
    Type: Application
    Filed: October 15, 2013
    Publication date: November 13, 2014
    Applicant: NXP B.V.
    Inventors: David Alan Du, Anubhav Gupta, Peter James Stonard
  • METHOD AND SYSTEM FOR SINGLE-LINE INTER-INTEGRATED CIRCUIT (I2C) BUS
    Publication number: 20140310436
    Abstract: Embodiments of a system and method are disclosed. One embodiment is an I2C compatible device. The I2C compatible device includes an SDA interface for connection to an SDA line and a single-line I2C module configured to transmit a sync word from the SDA interface over the SDA line and following the sync word, to transmit I2C data from the SDA interface over the SDA line such that digital data is communicated via a single line. In an embodiment, the sync word is a sync byte+NACK.
    Type: Application
    Filed: April 16, 2013
    Publication date: October 16, 2014
    Applicant: NXP B.V.
    Inventor: David Alan Du