Patents by Inventor Masaki Shingo

Masaki Shingo 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).

  • Non-volatile semiconductor device and method for automatically recovering erase failure in the device
    Patent number: 7352620
    Abstract: A spare sector is in a blank state beforehand. Each time the erasing is carried out in practical use, the number of erase pulses is counted or the presence/absence of overcurrent flowing when the erase pulse is being applied is monitored. A regular sector having long-erase failure thus detected is automatically replaced with a spare sector. In this manner, the long-erase failure can be recovered without erasing the spare sector after automatic redundancy with the spare sector.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: April 1, 2008
    Assignee: Spansion LLC
    Inventor: Masaki Shingo
  • Non-volatile semiconductor device and method for automatically recovering erase failure in the device
    Publication number: 20060239111
    Abstract: A spare sector is in a blank state beforehand. Each time the erasing is carried out in practical use, the number of erase pulses is counted or the presence/absence of overcurrent flowing when the erase pulse is being applied is monitored. A regular sector having long-erase failure thus detected is automatically replaced with a spare sector. In this manner, the long-erase failure can be recovered without erasing the spare sector after automatic redundancy with the spare sector.
    Type: Application
    Filed: April 20, 2005
    Publication date: October 26, 2006
    Inventor: Masaki Shingo