Patents by Inventor Rushyah Tang

Rushyah Tang 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).

  • Publication number: 20040105311
    Abstract: Floating gate memories such as EEPROM and flash EEPROM have the memory state of a memory cell thereof determined by sensing the conduction current of the cell. Inherent noise fluctuations in the conduction current during sensing are canceled out by averaging the sensing over a predetermined period of time. In one embodiment, as an integral part of the averaging process, the averaged conduction current is obtained directly as a digital memory state. Accuracy in sensing is therefore greatly improved by avoiding sensing noise with the current and avoiding having to resolve its memory state in the analog domain by comparison with another noisy reference current. In another embodiment, conventional sensing techniques are improved when sensing is made by comparison with a reference current by means of a symmetric, switched or non-switched capacitor differential amplifier.
    Type: Application
    Filed: November 12, 2003
    Publication date: June 3, 2004
    Inventors: Raul-Adrian Cernea, Rushyah Tang, Douglas Lee, Chi-Ming Wang, Daniel Guterman
  • Patent number: 6661708
    Abstract: Floating gate memories such as EEPROM and flash EEPROM have the memory state of a memory cell thereof determined by sensing the conduction current of the cell. Inherent noise fluctuations in the conduction current during sensing are canceled out by averaging the sensing over a predetermined period of time. In one embodiment, as an integral part of the averaging process, the averaged conduction current is obtained directly as a digital memory state. Accuracy in sensing is therefore greatly improved by avoiding sensing noise with the current and avoiding having to resolve its memory state in the analog domain by comparison with another noisy reference current. In another embodiment, conventional sensing techniques are improved when sensing is made by comparison with a reference current by means of a symmetric, switched or non-switched capacitor differential amplifier.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: December 9, 2003
    Assignee: SanDisk Corporation
    Inventors: Raul-Adrian Cernea, Rushyah Tang, Douglas Lee, Chi-Ming Wang, Daniel Guterman
  • Publication number: 20030072177
    Abstract: Floating gate memories such as EEPROM and flash EEPROM have the memory state of a memory cell thereof determined by sensing the conduction current of the cell. Inherent noise fluctuations in the conduction current during sensing are canceled out by averaging the sensing over a predetermined period of time. In one embodiment, as an integral part of the averaging process, the averaged conduction current is obtained directly as a digital memory state. Accuracy in sensing is therefore greatly improved by avoiding sensing noise with the current and avoiding having to resolve its memory state in the analog domain by comparison with another noisy reference current. In another embodiment, conventional sensing techniques are improved when sensing is made by comparison with a reference current by means of a symmetric, switched or non-switched capacitor differential amplifier.
    Type: Application
    Filed: November 7, 2002
    Publication date: April 17, 2003
    Inventors: Raul-Adrian Cernea, Rushyah Tang, Douglas Lee, Chi-Ming Wang, Daniel Guterman
  • Patent number: 6490200
    Abstract: Floating gate memories such as EEPROM and flash EEPROM have the memory state of a memory cell thereof determined by sensing the conduction current of the cell. Inherent noise fluctuations in the conduction current during sensing are canceled out by averaging the sensing over a predetermined period of time. In one embodiment, as an integral part of the averaging process, the averaged conduction current is obtained directly as a digital memory state. Accuracy in sensing is therefore greatly improved by avoiding sensing noise with the current and avoiding having to resolve its memory state in the analog domain by comparison with another noisy reference current. In another embodiment, conventional sensing techniques are improved when sensing is made by comparison with a reference current by means of a symmetric, switched or non-switched capacitor differential amplifier.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: December 3, 2002
    Assignee: SanDisk Corporation
    Inventors: Raul-Adrian Cernea, Rushyah Tang, Douglas Lee, Chi-Ming Wang, Daniel Guterman
  • Publication number: 20020051384
    Abstract: Floating gate memories such as EEPROM and flash EEPROM have the memory state of a memory cell thereof determined by sensing the conduction current of the cell. Inherent noise fluctuations in the conduction current during sensing are canceled out by averaging the sensing over a predetermined period of time. In one embodiment, as an integral part of the averaging process, the averaged conduction current is obtained directly as a digital memory state. Accuracy in sensing is therefore greatly improved by avoiding sensing noise with the current and avoiding having to resolve its memory state in the analog domain by comparison with another noisy reference current. In another embodiment, conventional sensing techniques are improved when sensing is made by comparison with a reference current by means of a symmetric, switched or non-switched capacitor differential amplifier.
    Type: Application
    Filed: August 7, 2001
    Publication date: May 2, 2002
    Applicant: SanDisk Corporation
    Inventors: Raul-Adrian Cernea, Rushyah Tang, Douglas Lee, Chi-Ming Wang, Daniel Guterman
  • Patent number: 6282120
    Abstract: Floating gate memories such as EEPROM and flash EEPROM have the memory state of a memory cell thereof determined by sensing the conduction current of the cell Inherent noise fluctuations in the conduction current during sensing are canceled out by averaging the sensing over a predetermined period of time. In one embodiment, as an integral part of the averaging process, the averaged conduction current is obtained directly as a digital memory state. Accuracy in sensing is therefore greatly improved by avoiding sensing noise with the current and avoiding having to resolve its memory state in the analog domain by comparison with another noisy reference current. In another embodiment, conventional sensing techniques are improved when sensing is made by comparison with a reference current by means of a symmetric, switched or non-switched capacitor differential amplifier.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: August 28, 2001
    Assignee: SanDisk Corporation
    Inventors: Raul-Adrian Cernea, Rushyah Tang, Douglas Lee, Chi-Ming Wang, Daniel Guterman
  • Patent number: 6044019
    Abstract: Floating gate memories such as EEPROM and flash EEPROM have the memory state of a memory cell thereof determined by sensing the conduction current of the cell. Inherent noise fluctuations in the conduction current during sensing are canceled out by averaging the sensing over a predetermined period of time. In one embodiment, as an integral part of the averaging process, the averaged conduction current is obtained directly as a digital memory state. Accuracy in sensing is therefore greatly improved by avoiding sensing noise with the current and avoiding having to resolve its memory state in the analog domain by comparison with another noisy reference current. In another embodiment, conventional sensing techniques are improved when sensing is made by comparison with a reference current by means of a symmetric, switched or non-switched capacitor differential amplifier.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: March 28, 2000
    Assignee: SanDisk Corporation
    Inventors: Raul-Adrian Cernea, Rushyah Tang, Douglas Lee, Chi-Ming Wang, Daniel Guterman