Patents by Inventor Alvin Chang

Alvin 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: 8638445
    Abstract: An imaging apparatus includes a light source; a first beam splitter for reflecting a projection beam emitted by the light source; an objective lens unit including a reflection reference surface for reproducing the projection beam into a measurement beam projected onto an object to generate a first reflection beam and a reference beam projected onto the reflection reference surface to generate a second reflection beam mixing with the first reflection beam and passing through the first splitter and forming an operating beam; a second beam splitter for modulating the operating beam into first and second sub-beams; a monochrome image detection device for passage of the first sub-beam to obtain an interferometric image with monochrome from a first interference region; and an image detection device for permitting passage of the second sub-beam in order to obtain a non-interferometric image from a second interference region.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: January 28, 2014
    Assignee: Chroma Ate Inc.
    Inventors: Yu-Hsuan Lin, Shih-Yao Pan, Hsin-Yueh Sung, Alvin Chang, Hung-Ta Chien
  • Publication number: 20110317169
    Abstract: An imaging apparatus includes a light source; a first beam splitter for reflecting a projection beam emitted by the light source; an objective lens unit including a reflection reference surface for reproducing the projection beam into a measurement beam projected onto an object to generate a first reflection beam and a reference beam projected onto the reflection reference surface to generate a second reflection beam mixing with the first reflection beam and passing through the first splitter and forming an operating beam; a second beam splitter for modulating the operating beam into first and second sub-beams; a monochrome image detection device for passage of the first sub-beam to obtain an interferometric image with monochrome from a first interference region; and an image detection device for permitting passage of the second sub-beam in order to obtain a non-interferometric image from a second interference region.
    Type: Application
    Filed: June 20, 2011
    Publication date: December 29, 2011
    Applicant: CHROMA ATE INC.
    Inventors: YU-HSUAN LIN, SHIH-YAO PAN, HSIN-YUEH SUNG, ALVIN CHANG, HUNG-TA CHIEN
  • Patent number: 7983961
    Abstract: Techniques are described for collecting user descriptive data as a user employs a client device, such as a personal computer, laptop, PDA, or the like. The data is evaluated and a profile code is assigned based upon the evaluation. This profile code is selected from a domain of profile codes established so that useful markets for targeted advertising are identified by the profile codes, but the profile codes are not so specific that the user's privacy is unduly threatened.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: July 19, 2011
    Inventors: Alvin Chang, Rocky Kahn
  • Publication number: 20050240625
    Abstract: A scalable fulfillment system is presented that supports business processes, manages the transport and processing of business-related messages or documents between a business entity and clients, such as customers, vendors, and business partners, and generally supports business document processing. The system intelligently manages the transportation of files from clients, through processing of files, to generating responses that return to the clients. To accommodate a heterogeneous interfacing and processing with different clients in a central system, a file normalization technique is used that captures a common meta-data format from the numerous heterogeneous file types used by numerous clients. The meta-data files, also referred to as messages, contain links to their associated data files and are processed separately.
    Type: Application
    Filed: April 23, 2004
    Publication date: October 27, 2005
    Applicant: Wal-Mart Stores, Inc.
    Inventors: Alvin Chang, Simon Hui, Yulia Groza, Nathaniel Harward, Steven Chen