Patents by Inventor Johan Bin Jumahat

Johan Bin Jumahat 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).

  • Power calibration in optical disc drives
    Patent number: 8107338
    Abstract: A method for reducing overall power calibration time and increasing the number of power calibrations that can be done on an optical record carrier includes performing a first set of power calibration procedures on an optical record carrier at a first recording speed in a first set of calibration areas, and performing a further set of power calibration procedures on the optical record carrier at a recording speed different from the first recording speed. The further set of power calibration procedures partly uses information from the first set of calibration areas.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: January 31, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Venkata Ramana Vangala, Sreenivas Mamidi, Johan Bin Jumahat
  • POWER CALIBRATION IN OPTICAL DISC DRIVES
    Publication number: 20100103786
    Abstract: A method comprising performing a first set of power calibration procedures on an optical record carrier at a first recording speed in a first set of calibration areas and performing a further set of power calibration procedures on the optical record carrier at a recording speed different from the first recording speed, wherein the further set of power calibration procedures partly uses information from the first set of calibration areas is disclosed. The technique is useful in scenarios where the recording is required to be done with more than one speed on the same optical record carrier. The technique reduces the overall power calibration time and increases the number of power calibrations that can be done on the optical record carrier. The technique is useful for data, audio and video recorders.
    Type: Application
    Filed: April 11, 2008
    Publication date: April 29, 2010
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Venkata Ramana Vangala, Sreenivas Mamidi, Johan Bin Jumahat