Patents by Inventor Ka Ian Yung

Ka Ian Yung 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: 9218953
    Abstract: A low profile USB flash memory device, and methods of forming same, are disclosed. The USB flash memory device includes an integrated circuit memory portion and a USB connector. The memory portion and the USB connector may be integrally formed on the same substrate. The USB flash memory device includes a substrate on which is mounted one or more flash memory die, a controller die, passive components and an LED for indicating when the memory is being accessed. In contrast to prior art USB memory devices which used TSOP packages mounted on a printed circuit board, the semiconductor die of the present invention are affixed to the substrate and wire bonded in a SIP configuration. Omitting the encapsulated TSOP packages allows a reduction in the overall thickness of the USB flash memory device.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: December 22, 2015
    Assignee: SanDisk Technologies Inc.
    Inventors: Suresh Upadhyayula, Robert C. Miller, Hem Takiar, Steven Sprouse, Ka Ian Yung
  • Publication number: 20150155156
    Abstract: A low profile USB flash memory device, and methods of forming same, are disclosed. The USB flash memory device includes an integrated circuit memory portion and a USB connector. The memory portion and the USB connector may be integrally formed on the same substrate. The USB flash memory device includes a substrate on which is mounted one or more flash memory die, a controller die, passive components and an LED for indicating when the memory is being accessed. In contrast to prior art USB memory devices which used TSOP packages mounted on a printed circuit board, the semiconductor die of the present invention are affixed to the substrate and wire bonded in a SIP configuration. Omitting the encapsulated TSOP packages allows a reduction in the overall thickness of the USB flash memory device.
    Type: Application
    Filed: February 2, 2015
    Publication date: June 4, 2015
    Applicant: SANDISK TECHNOLOGIES INC.
    Inventors: Suresh Upadhyayula, Robert C. Miller, Hem Takiar, Steven Sprouse, Ka Ian Yung
  • Patent number: 8947883
    Abstract: A low profile USB flash memory device, and methods of forming same, are disclosed. The USB flash memory device includes an integrated circuit memory portion and a USB connector. The memory portion and the USB connector may be integrally formed on the same substrate. The USB flash memory device includes a substrate on which is mounted one or more flash memory die, a controller die, passive components and an LED for indicating when the memory is being accessed. In contrast to prior art USB memory devices which used TSOP packages mounted on a printed circuit board, the semiconductor die of the present invention are affixed to the substrate and wire bonded in a SIP configuration. Omitting the encapsulated TSOP packages allows a reduction in the overall thickness of the USB flash memory device.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: February 3, 2015
    Assignee: SanDisk Technologies Inc.
    Inventors: Suresh Upadhyayula, Robert C. Miller, Hem Takiar, Steven Sprouse, Ka Ian Yung
  • Patent number: 8719660
    Abstract: Disclosed are apparatus and techniques for indicating health of a memory system having a controller and nonvolatile memory array. In one embodiment, the invention pertains to a method for indicating health of a removable memory system that is removably coupled with a host device. After the memory system is coupled with a host device, a first health status is output via an external electrical or mechanical interface of the memory system. One or more health metrics of the memory system are monitored. After a first predefined limit is reached with respect to the one or more health metrics, a second health status is output via the external electrical or mechanical interface of the memory system. The first health status differs from the second health status.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: May 6, 2014
    Assignee: SanDisk Technologies Inc.
    Inventors: Yong Peng, Ka Ian Yung, Xiangyang Miao, Arjun Hary
  • Publication number: 20130159797
    Abstract: Disclosed are apparatus and techniques for indicating health of a memory system having a controller and nonvolatile memory array. In one embodiment, the invention pertains to a method for indicating health of a removable memory system that is removably coupled with a host device. After the memory system is coupled with a host device, a first health status is output via an external electrical or mechanical interface of the memory system. One or more health metrics of the memory system are monitored. After a first predefined limit is reached with respect to the one or more health metrics, a second health status is output via the external electrical or mechanical interface of the memory system. The first health status differs from the second health status.
    Type: Application
    Filed: December 20, 2011
    Publication date: June 20, 2013
    Applicant: SANDISK TECHNOLOGIES INC.
    Inventors: Yong Peng, Ka Ian Yung, Xiangyang Miao, Arjun Hary
  • Patent number: 8001304
    Abstract: A non-volatile storage device has first and second controllers that provide external access to non-volatile memory using different protocols. In response to a request from the first controller, the second controller retrieves parameters from the non-volatile memory and provides the retrieved parameters to the first controller. In one embodiment, the device parameters are USB descriptors, which may include a vendor ID, a product ID, a product string, and/or a serial number. The first controller may be a Universal Serial Bus (USB) card reader controller. Examples of the second controller include a Secure Digital (SD) controller, a CompactFlash (CF) controller, a MemoryStick controller, or a different type of controller that is able to provide external access to the non-volatile memory. The first controller provides the device parameters to a host during enumeration of the non-volatile storage device. The device parameters may be used to establish settings for the first controller.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: August 16, 2011
    Assignee: SanDisk Technologies Inc.
    Inventors: Ka Ian Yung, Steven Sprouse, Dhaval Parikh, Nathan Rapaport
  • Patent number: 7921255
    Abstract: A memory controller for a memory card such as an SD card with an additional host interface such as a USB interface comprises a duplicate SD interface. Embodiments with two SD interfaces may also comprise a card reader controller chip that can be turned off by the memory controller when the USB interface is not needed. Incorporation of the additional SD interface in the controller allows for an economical or off the shelf card reader controller to be employed.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: April 5, 2011
    Assignee: SanDisk Corporation
    Inventors: Steven Theodore Sprouse, Ka Ian Yung
  • Publication number: 20090210637
    Abstract: A non-volatile storage device has first and second controllers that provide external access to non-volatile memory using different protocols. In response to a request from the first controller, the second controller retrieves parameters from the non-volatile memory and provides the retrieved parameters to the first controller. In one embodiment, the device parameters are USB descriptors, which may include a vendor ID, a product ID, a product string, and/or a serial number. The first controller may be a Universal Serial Bus (USB) card reader controller. Examples of the second controller include a Secure Digital (SD) controller, a CompactFlash (CF) controller, a MemoryStick controller, or a different type of controller that is able to provide external access to the non-volatile memory. The first controller provides the device parameters to a host during enumeration of the non-volatile storage device. The device parameters may be used to establish settings for the first controller.
    Type: Application
    Filed: February 15, 2008
    Publication date: August 20, 2009
    Inventors: Ka Ian Yung, Steven Sprouse, Dhaval Parikh, Nathan Rapaport
  • Publication number: 20090165294
    Abstract: A low profile USB flash memory device, and methods of forming same, are disclosed. The USB flash memory device includes an integrated circuit memory portion and a USB connector. The memory portion and the USB connector may be integrally formed on the same substrate. The USB flash memory device includes a substrate on which is mounted one or more flash memory die, a controller die, passive components and an LED for indicating when the memory is being accessed. In contrast to prior art USB memory devices which used TSOP packages mounted on a printed circuit board, the semiconductor die of the present invention are affixed to the substrate and wire bonded in a SIP configuration. Omitting the encapsulated TSOP packages allows a reduction in the overall thickness of the USB flash memory device.
    Type: Application
    Filed: December 27, 2007
    Publication date: July 2, 2009
    Inventors: Suresh Upadhyayula, Robert C. Miller, Hem Takiar, Steven Sprouse, Ka Ian Yung
  • Publication number: 20090164686
    Abstract: A memory controller for a memory card such as an SD card with an additional host interface such as a USB interface comprises a duplicate SD interface. Embodiments with two SD interfaces may also comprise a card reader controller chip that can be turned off by the memory controller when the USB interface is not needed. Incorporation of the additional SD interface in the controller allows for an economical or off the shelf card reader controller to be employed.
    Type: Application
    Filed: December 21, 2007
    Publication date: June 25, 2009
    Inventors: Steven Theodore Sprouse, Ka Ian Yung
  • Patent number: 7354314
    Abstract: A semiconductor device is disclosed including a sheathless connector having a grounding pin which protects against electrical shorts and damage upon a backwards insertion of the connector to a host device. If the electrical connector is inserted backwards, the grounding pin mates with the signal ground terminal of the socket, and avoids contact with the remaining terminals. As a result, the damage otherwise occurring upon a backwards insertion of prior art devices is avoided.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: April 8, 2008
    Assignee: SanDisk Corporation
    Inventors: Steven Sprouse, Ka Ian Yung, Suresh Upadhyayula, Patricio Collantes