Patents by Inventor Hun-Song Chen

Hun-Song Chen 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).

  • Method and system for soft programming algorithm
    Patent number: 5745410
    Abstract: A floating gate memory device which includes control circuits to generate a repair pulse to repair over-erased cells so they may be repaired block-by-block. This invention includes repairing the cells by applying a repair pulse to the cell's bit line while maintaining the word line voltage above ground. In a different embodiment, the word line voltage is maintained at two different voltage levels above ground. In the first stage, the word line voltage is maintained between approximately 0.1 volts and 0.2 volts for approximately 100 ms while the repair pulse is applied. In the second stage, the word line voltage is maintained between approximately 0.4 volts and 0.5 volts for approximately 100 ms while the repair pulse is applied.
    Type: Grant
    Filed: March 21, 1996
    Date of Patent: April 28, 1998
    Assignee: Macronix International Co., Ltd.
    Inventors: Tom Dang-Hsing Yiu, Fuchia Shone, I-Long Lee, Chia-Shing Chen, Hun-Song Chen, Yuan-Chang Liu, Tzeng-Huei Shiau, Kuen-Long Chang, Ray-Lin Wan