Patents by Inventor David Haglan

David Haglan 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).

  • Physical device (PHY) support of the USB2.0 link power management addendum using a ULPI PHY interface standard
    Patent number: 7761645
    Abstract: A protocol may enable support of the USB 2.0 LPM (Link Power Management) Addendum by a ULPI PHY (Universal Serial Bus Transceiver Macrocell Low-Pin Interface Physical Layer Device), facilitating transmitting the reserved PID (Physical Interface Device) token, used in the LPM Extended Transaction, through a ULPI bus. Bits [3:0] of a ULPI Tx Cmd (Transmit Command) byte may be reused, with the value of those bits being 4?b0 for a transmission (normally indicating a No PID transmission), by configuring the ULPI PHY to qualify the selected four Tx Cmd bits (bits [3:0] of the Tx Cmd) with the Opmode code. The ULPI PHY may thereby interpret bits [3:0] of the Tx Cmd byte based on the value of the Opmode, and may not transmit the Extended PID when the Opmode is set to 2?b10, that is, when the Opmode is indicative of bit-stuffing and NRZI encoding being disabled, for example during a Chirp transmission.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: July 20, 2010
    Assignee: Standard Microsystems Corporation
    Inventors: Morgan H. Monks, David Haglan
  • Physical Device (PHY) Support Of The USB2.0 Link Power Management Addendum Using A ULPI PHY Interface Standard
    Publication number: 20080320202
    Abstract: A protocol may enable support of the USB 2.0 LPM (Link Power Management) Addendum by a ULPI PHY (Universal Serial Bus Transceiver Macrocell Low-Pin Interface Physical Layer Device), facilitating transmitting the reserved PID (Physical Interface Device) token, used in the LPM Extended Transaction, through a ULPI bus. Bits [3:0] of a ULPI Tx Cmd (Transmit Command) byte may be reused, with the value of those bits being 4?b0 for a transmission (normally indicating a No PID transmission), by configuring the ULPI PHY to qualify the selected four Tx Cmd bits (bits [3:0] of the Tx Cmd) with the Opmode code. The ULPI PHY may thereby interpret bits [3:0] of the Tx Cmd byte based on the value of the Opmode, and may not transmit the Extended PID when the Opmode is set to 2?b10, that is, when the Opmode is indicative of bit-stuffing and NRZI encoding being disabled, for example during a Chirp transmission.
    Type: Application
    Filed: June 18, 2008
    Publication date: December 25, 2008
    Inventors: Morgan H. Monks, David Haglan