Patents by Inventor Yuanhua Shen

Yuanhua Shen 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).

  • Focalizer alignment
    Publication number: 20060140077
    Abstract: Described here are methods and devices for aligning an optical servo system used with digital storage media. The devices and methods described herein include alignment apparatuses and alignment test targets, and methods of using them to align the light source outputs of an optical servo system. The alignment test target may comprise an alignment test tape. The alignment test tape may be used to generate an output signal indicative of optical servo system alignment, and this signal may be used to align the light source outputs of the optical servo system.
    Type: Application
    Filed: December 28, 2004
    Publication date: June 29, 2006
    Applicant: Quantum Corporation
    Inventors: Hong Chen, Plamen Stoyanov, Yuanhua Shen