Patents by Inventor Chih-Hwa Chang

Chih-Hwa Chang 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: 8707135
    Abstract: A method of dynamic data storage for error correction in a memory device is disclosed. Data for storage is received, the received data is encoded and error correction code (ECC) is generated. The encoded data is stored in the memory device that includes a plurality of pages each having a plurality of data partitions. More corrected errors a marked page has, a smaller portion with a space of at least one datum of each of the corresponding data partitions associated with the marked page is allocated to store the encoded data, while a size of the ECC is fixed, thereby increasing capability of correcting errors in the marked page.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: April 22, 2014
    Assignee: Skymedi Corporation
    Inventors: Chih-Cheng Tu, Yan-Wun Huang, Han-Lung Huang, Ming-Hung Chou, Chien-Fu Huang, Chih-Hwa Chang
  • Patent number: 8429497
    Abstract: A method of dynamic data storage for error correction in a memory device is disclosed. Data for storage is received, and the received data is then encoded and associated error correction code (ECC) is generated. The encoded data is stored in a portion of a data partition of the memory device, wherein percentage of the stored data in the data partition is determined according to an amount of corrected errors associated with the data partition or is predetermined.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: April 23, 2013
    Assignee: Skymedi Corporation
    Inventors: Chih-Cheng Tu, Yan-Wun Huang, Han-Lung Huang, Ming-Hung Chou, Chien-Fu Huang, Chih-Hwa Chang
  • Patent number: 8239733
    Abstract: The present invention is directed to a memory device with protection capability and a method of accessing data therein. A spreader encrypts input user data according to an entered password, and the encrypted data is then stored in a storage area. A despreader performs reverse process of the spreader on the stored data according to the entered password.
    Type: Grant
    Filed: November 27, 2009
    Date of Patent: August 7, 2012
    Assignee: Skymedi Corporation
    Inventors: Chih-Cheng Tu, Yan-Wun Huang, Han-Lung Huang, Ming-Hung Chou, Chien-Fu Huang, Chih-Hwa Chang
  • Publication number: 20110131459
    Abstract: The present invention is directed to a memory device with protection capability and a method of accessing data therein. A spreader encrypts input user data according to an entered password, and the encrypted data is then stored in a storage area. A despreader performs reverse process of the spreader on the stored data according to the entered password.
    Type: Application
    Filed: November 27, 2009
    Publication date: June 2, 2011
    Applicant: SKYMEDI CORPORATION
    Inventors: Chih-Cheng Tu, Yan-Wun Huang, Han-Lung Huang, Ming-Hung Chou, Chien-Fu Huang, Chih-Hwa Chang
  • Publication number: 20110055659
    Abstract: A method of dynamic data storage for error correction in a memory device is disclosed. Data for storage is received, and the received data is then encoded and associated error correction code (ECC) is generated. The encoded data is stored in a portion of a data partition of the memory device, wherein percentage of the stored data in the data partition is determined according to an amount of corrected errors associated with the data partition or is predetermined.
    Type: Application
    Filed: August 26, 2009
    Publication date: March 3, 2011
    Applicant: SKYMEDI CORPORATION
    Inventors: Chih-Cheng Tu, Yan-Wun Huang, Han-Lung Huang, Ming-Hung Chou, Chien-Fu Huang, Chih-Hwa Chang
  • Publication number: 20100293309
    Abstract: A production tool for low-level format of a storage device is disclosed. The production tool includes an input connector connectable and an output connector, both of which conform to an interface standard. At least a redundant pin of the input connector is unconnected with a corresponding redundant pin of the output connector, and the redundant pin of the output connector is electrically connected to receive a provided predetermined signal, the presence of which indicating a low-level format mode.
    Type: Application
    Filed: May 13, 2009
    Publication date: November 18, 2010
    Inventors: Yun-Ching Lin, Chih-Cheng Tu, Chih-Hwa Chang, Yung-Li Ji, Fu-Chen Cheng