Patents by Inventor Chu-Hsuan Cheng

Chu-Hsuan Cheng 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).

  • Thin-film design for optical recording media
    Patent number: 6811948
    Abstract: A thin-film optical recording medium and compatible materials is disclosed. When the transparent layer and the reflecting layer of the present invention are exposed to a light beam, the two layers react to form a semi-transparent reflective alloy/compound area. The presence of such area (1) decreases the effective optical thickness of the transparent layer and/or (2) forms a region of changed optical n & k and/or (3) changes the optical polarization angle. At least one of the above three effects produces an optical contrast before and after the recording from which the signal modulation required for reading the optical media can be derived. The present invention allows high-density, high-resolution, high-speed recording of data that is highly compatible with the full visible-light spectrum.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: November 2, 2004
    Inventors: Geoffrey Wen Tai Shuy, Yu-Chia Chang, Chu-Hsuan Cheng, Zuei-Chown Jou, Wen-Yang Ko
  • Optical recordable medium and process of recording thereon
    Publication number: 20030223349
    Abstract: An optical recordable medium at least comprises a recording layer formed on a transparent substrate. The recording layer is sequentially formed on a first transparent layer, a semi-reflective layer, a dielectric layer, a reflective layer and a material layer. When a modulated writing beam irradiates the recording layer and data is written in a recorded area, the first transparent layer and the semi-reflective layer react to form a second semi-reflective layer. When a reading light irradiates the recorded area, the light wave phase is shifted and the recorded area becomes anti-reflective.
    Type: Application
    Filed: May 30, 2002
    Publication date: December 4, 2003
    Applicant: LANYO TECHNOLOGY CO., LTD.
    Inventors: Yu-Chia Chang, Chu-Hsuan Cheng, Hsin-Cheng Lai
  • Thin-film design for optical recording media
    Publication number: 20010021160
    Abstract: A thin-film optical recording medium and compatible materials is disclosed. When the transparent layer and the reflecting layer of the present invention are exposed to a light beam, the two layers react to form a semi-transparent reflective alloy/compound area. The presence of such area (1) decreases the effective optical thickness of the transparent layer and/or (2) forms a region of changed optical n & k and/or (3) changes the optical polarization angle. At least one of the above three effects produces an optical contrast before and after the recording from which the signal modulation required for reading the optical media can be derived. The present invention allows high-density, high-resolution, high-speed recording of data that is highly compatible with the full visible-light spectrum.
    Type: Application
    Filed: February 20, 2001
    Publication date: September 13, 2001
    Inventors: Geoffrey Wen Tai Shuy, Yu-Chia Chang, Chu-Hsuan Cheng, Zuei-Chown Jou, Wen-Yang Ko