Patents by Inventor STEVE XIAOFENG CHI

STEVE XIAOFENG CHI 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).

  • Voltage level detection and analog circuit arrangements for memory systems
    Patent number: 10310580
    Abstract: An apparatus may include detection circuitry configured to detect a presence of a host clock signal on a host clock line, and detect a level of a host supply voltage upon detection of the host clock signal. The detection circuitry may configure a core regulator in a regulation mode or in a bypass mode based on the detected level of the host supply voltage. Additionally, components of analog circuitry of a non-volatile memory system may be partitioned into different supply voltage domains, with those components active during a sleep state receiving one supply voltage and those components inactive during the sleep state receiving a different supply voltage.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: June 4, 2019
    Assignee: SanDisk Technologies LLC
    Inventors: Steve Xiaofeng Chi, Ekram Hossain Bhuiyan
  • VOLTAGE LEVEL DETECTION AND ANALOG CIRCUIT ARRANGEMENTS FOR MEMORY SYSTEMS
    Publication number: 20170102754
    Abstract: An apparatus may include detection circuitry configured to detect a presence of a host clock signal on a host clock line, and detect a level of a host supply voltage upon detection of the host clock signal. The detection circuitry may configure a core regulator in a regulation mode or in a bypass mode based on the detected level of the host supply voltage. Additionally, components of analog circuitry of a non-volatile memory system may be partitioned into different supply voltage domains, with those components active during a sleep state receiving one supply voltage and those components inactive during the sleep state receiving a different supply voltage.
    Type: Application
    Filed: October 9, 2015
    Publication date: April 13, 2017
    Applicant: SanDisk Technologies Inc.
    Inventors: Steve Xiaofeng Chi, Ekram Hossain Bhuiyan
  • Host interface of a memory device supplied with regulated or non-regulated power based on operating mode of the memory device
    Patent number: 9483096
    Abstract: A data storage device includes a non-volatile memory and a host interface. A method includes supplying a first supply voltage to the host interface during a first mode of operation of the non-volatile memory. The method further includes supplying a second supply voltage to the host interface in response to a transition from the first mode of operation to a second mode of operation of the non-volatile memory.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: November 1, 2016
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Ekram Hossain Bhuiyan, Steve Xiaofeng Chi
  • Load impedance adjustment for an interface of a data storage device
    Patent number: 9444455
    Abstract: A data storage device includes a signal source. A load is responsive to the signal source. A method includes adjusting an impedance of the load to reduce an impedance mismatch between the signal source and the load.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: September 13, 2016
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Ekram Hossain Bhuiyan, Steve Xiaofeng Chi
  • LOAD IMPEDANCE ADJUSTMENT FOR AN INTERFACE OF A DATA STORAGE DEVICE
    Publication number: 20150162909
    Abstract: A data storage device includes a signal source. A load is responsive to the signal source. A method includes adjusting an impedance of the load to reduce an impedance mismatch between the signal source and the load.
    Type: Application
    Filed: December 10, 2013
    Publication date: June 11, 2015
    Applicant: SANDISK TECHNOLOGIES INC.
    Inventors: EKRAM HOSSAIN BHUIYAN, STEVE XIAOFENG CHI
  • MULTIPLE POWER SUPPLY DELIVERY FOR A DATA STORAGE DEVICE
    Publication number: 20150160706
    Abstract: A data storage device includes a non-volatile memory and a host interface. A method includes supplying a first supply voltage to the host interface during a first mode of operation of the non-volatile memory. The method further includes supplying a second supply voltage to the host interface in response to a transition from the first mode of operation to a second mode of operation of the non-volatile memory.
    Type: Application
    Filed: December 6, 2013
    Publication date: June 11, 2015
    Applicant: Sandisk Technologies Inc.
    Inventors: EKRAM HOSSAIN BHUIYAN, STEVE XIAOFENG CHI