Patents by Inventor Shih-Kai Weng

Shih-Kai Weng 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: 7965603
    Abstract: A method of adjusting a write strategy of a recordable disc comprises steps of: generating a test pattern on a power calibrating area of the recordable disc according to a first write strategy and a first write power; establishing a Pit-to-Land Inter-Symbol Interference table and a Land-to-Pit Inter-Symbol Interference table through measuring a plurality of Pits and Lands with different time lengths in the test pattern; and generating a second overdrive power by adjusting a first overdrive power of the first write strategy according to the Pit-to-Land Inter-Symbol Interference table and the Land-to-Pit Inter-Symbol Interference table.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: June 21, 2011
    Assignee: Lite-On It Corporation
    Inventors: Ling-Feng Chen, Yi-Hsueh Lee, Shih-Kai Weng, Chao-Wen Hu
  • Patent number: 7940624
    Abstract: A method of adjusting a write strategy of a recordable disc comprises steps of: generating a test pattern on a power calibrating area of the recordable disc according to a first write strategy, a first write power, and a first target ? value; establishing a Pit-to-Land Inter-Symbol Interference table and a Land-to-Pit Inter-Symbol Interference table by measuring a plurality of Pits and Lands with different time lengths in the test pattern; generating an updated timing parameter set by adjusting a timing parameter set of the first write strategy according to the Pit-to-Land Inter-Symbol Interference table and the Land-to-Pit Inter-Symbol Interference table; and generating an updated target ? value according to the updated timing parameter set.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: May 10, 2011
    Assignee: Lite-On It Corporation
    Inventors: Chao-Wen Hu, Ling-Feng Chen, Shih-Kai Weng, Yi-Hsueh Lee
  • Patent number: 7773472
    Abstract: The present invention discloses a method for dynamically detecting writing quality of a recordable optical disc. According to the method, firstly a current detecting position located on a program area of the recordable optical disc is set. Then the recordable disc drive proceeds data recording in the program area with an optimal write power. The recordable disc drive paused data recording when a recording position exceeds or is equal to the current detecting position. Then the recordable disc drive reproduces pre-recorded data in the tracks of the recordable optical disc to perform OPC for modifying the optimal write power and calculating a jitter value. Thereafter a following detecting position is modified based on the jitter value and data recording is restarted in the program area with the modified optimal write power until the recording position exceeds or is equal to the modified following detecting position.
    Type: Grant
    Filed: November 23, 2007
    Date of Patent: August 10, 2010
    Assignee: Lite-On It Corp.
    Inventors: Gang-Ming Fan, Shih-Kai Weng
  • Publication number: 20080186819
    Abstract: A method of adjusting a write strategy of a recordable disc comprises steps of: generating a test pattern on a power calibrating area of the recordable disc according to a first write strategy, a first write power, and a first target ? value; establishing a Pit-to-Land Inter-Symbol Interference table and a Land-to-Pit Inter-Symbol Interference table by measuring a plurality of Pits and Lands with different time lengths in the test pattern; generating an updated timing parameter set by adjusting a timing parameter set of the first write strategy according to the Pit-to-Land Inter-Symbol Interference table and the Land-to-Pit Inter-Symbol Interference table; and generating an updated target ? value according to the updated timing parameter set.
    Type: Application
    Filed: January 24, 2008
    Publication date: August 7, 2008
    Applicant: LITE-ON IT CORP.
    Inventors: Chao-Wen Hu, Ling-Feng Chen, Shih-Kai Weng, Yi-Hsueh Lee
  • Publication number: 20080186813
    Abstract: A method of adjusting a write strategy of a recordable disc comprises steps of: generating a test pattern on a power calibrating area of the recordable disc according to a first write strategy and a first write power; establishing a Pit-to-Land Inter-Symbol Interference table and a Land-to-Pit Inter-Symbol Interference table by measuring a plurality of Pits and Lands with different time lengths in the test pattern; and generating a second timing parameter set by adjusting a first timing parameter set of the first write strategy according to the Pit-to-Land Inter-Symbol Interference table and the Land-to-Pit Inter-Symbol Interference table.
    Type: Application
    Filed: January 24, 2008
    Publication date: August 7, 2008
    Applicant: LITE-ON IT CORP.
    Inventors: Chao-Wen Hu, Ling-Feng Chen, Shih-Kai Weng, Yi-Hsueh Lee
  • Publication number: 20080186820
    Abstract: A method of adjusting a write strategy of a recordable disc comprises steps of: generating a test pattern on a power calibrating area of the recordable disc according to a first write strategy and a first write power; establishing a Pit-to-Land Inter-Symbol Interference table and a Land-to-Pit Inter-Symbol Interference table by measuring a plurality of Pits and Lands with different time lengths in the test pattern; generating an updated timing parameter set by adjusting a timing parameter set of the first write strategy according to the Pit-to-Land Inter-Symbol Interference table and the Land-to-Pit Inter-Symbol Interference table; generating an updated overdrive power by adjusting an overdrive power of the first write strategy according to the Pit-to-Land Inter-Symbol Interference table and the Land-to-Pit Inter-Symbol Interference table; and defining a second write strategy according to the updated timing parameter set and the updated overdrive power.
    Type: Application
    Filed: January 24, 2008
    Publication date: August 7, 2008
    Applicant: LITE-ON IT CORP.
    Inventors: Shih-Kai Weng, Ling-Feng Chen, Chao-Wen Hu, Yi-Hsueh Lee
  • Publication number: 20080186818
    Abstract: A method of adjusting a write strategy of a recordable disc comprises steps of: generating a test pattern on a power calibrating area of the recordable disc according to a first write strategy and a first write power; establishing a Pit-to-Land Inter-Symbol Interference table and a Land-to-Pit Inter-Symbol Interference table through measuring a plurality of Pits and Lands with different time lengths in the test pattern; and generating a second overdrive power by adjusting a first overdrive power of the first write strategy according to the Pit-to-Land Inter-Symbol Interference table and the Land-to-Pit Inter-Symbol Interference table.
    Type: Application
    Filed: January 24, 2008
    Publication date: August 7, 2008
    Applicant: LITE-ON IT CORP.
    Inventors: Ling-Feng Chen, Yi-Hsueh Lee, Shih-Kai Weng, Chao-Wen Hu
  • Publication number: 20080130439
    Abstract: The present invention discloses a method for dynamically detecting writing quality of a recordable optical disc. According to the method, firstly a current detecting position located on a program area of the recordable optical disc is set. Then the recordable disc drive proceeds data recording in the program area with an optimal write power. The recordable disc drive paused data recording when a recording position exceeds or is equal to the current detecting position. Then the recordable disc drive reproduces pre-recorded data in the tracks of the recordable optical disc to perform OPC for modifying the optimal write power and calculating a jitter value. Thereafter a following detecting position is modified based on the jitter value and data recording is restarted in the program area with the modified optimal write power until the recording position exceeds or is equal to the modified following detecting position.
    Type: Application
    Filed: November 23, 2007
    Publication date: June 5, 2008
    Applicant: LITE-ON IT CORP.
    Inventors: Gang-Ming Fan, Shih-Kai Weng