Patents by Inventor Edward Y. Chang

Edward Y. 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: 6976016
    Abstract: A method of learning user query concept for searching visual images encoded in computer readable storage media comprising: providing a multiplicity of sample images encoded in a computer readable medium; providing a multiplicity of sample expressions that correspond to sample images and in which terms of the sample expressions represent features of corresponding sample images; defining a user query concept sample space bounded by a boundary k-CNF expression and by a boundary k-DNF expression refining the user query concept sample space by, soliciting user feedback as to which of the multiple presented sample images are close to the user's query concept; removing from the boundary k-CNF expression disjunctive terms based upon the solicited user feedback; and removing from the boundary k-DNF expression respective conjunctive terms based upon the solicited user feedback.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: December 13, 2005
    Assignee: Vima Technologies, Inc.
    Inventors: Edward Y. Chang, Kwang-Ting Cheng
  • Patent number: 6943068
    Abstract: The invention relates to a method for fabricating nanometer gate semiconductor device using thermally reflowed photoresist technology, comprising steps of (i) spin-coating two layers of photoresists on a substrate, where a bottom layer of photoresist is a polymeric photoresist having a lower sensitivity and a higher resolution, and a top layer of photoresist, is another polymeric photoresist having a higher sensitivity and a lower resolution, with respect to the electron beam; (ii) heating the photoresists for curing by way of using a hotplate; (iii) using photolithography in an electron beam direct writing manner to expose a pattern on the photoresists for forming a gate; (iv) using a developer and an etchant for developing and etching to form a recess on the gate; (v) plating a metallic layer on the recess of the gate using an electron gun evaporation technique; and (vi) removing the photoresists to obtain the gate, characterized in that after the etching of the recess of the gate, the photoresists are refl
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: September 13, 2005
    Assignee: National Chiao Tung University
    Inventors: Edward Y. Chang, Huang-Ming Lee
  • Patent number: 6865302
    Abstract: A content-based image retrieval (CBIR) system has a front-end that includes a pipeline of one or more dynamically-constructed filters for measuring perceptual similarities between a query image and one or more candidate images retrieved from a back-end comprised of a knowledge base accessed by an inference engine. The images include at least one color set having a set of properties including a number of pixels each having at least one color, a culture color associated with the color set, a mean and variance of the color set, a moment invariant, and a centroid. The filters analyze and compare the set of properties of the query image to the set of properties of the candidate images.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: March 8, 2005
    Assignee: The Regents of the University of California
    Inventor: Edward Y. Chang
  • Publication number: 20040229409
    Abstract: The invention relates to a method for fabricating nanometer gate semiconductor device using thermally reflowed photoresist technology, comprising steps of (i) spin-coating two layers of photoresists on a substrate, where a bottom layer of photoresist is a polymeric photoresist having a lower sensitivity and a higher resolution, and a top layer of photoresist, is another polymeric photoresist having a higher sensitivity and a lower resolution, with respect to the electron beam; (ii) heating the photoresists for curing by way of using a hotplate; (iii) using photolithography in an electron beam direct writing manner to expose a pattern on the photoresists for forming a gate; (iv) using a developer and an etchant for developing and etching to form a recess on the gate; (v) plating a metallic layer on the recess of the gate using an electron gun evaporation technique; and (vi) removing the photoresists to obtain the gate, characterized in that after the etching of the recess of the gate, the photoresists are refl
    Type: Application
    Filed: November 17, 2003
    Publication date: November 18, 2004
    Applicant: National Chiao Tung University
    Inventors: Edward Y. Chang, Huang-Ming Lee
  • Patent number: 6803329
    Abstract: A method for low temperature liquid-phase deposition and a method for cleaning a liquid-phase deposition apparatus are disclosed. The method for low temperature liquid-phase deposition is employed so as to form a low-temperature grown film or a film with excellent step-coverage on the surface of a semiconductor device having independent circuit functions. The method for cleaning liquid-phase deposition apparatus is characterized in that a loop used exclusively for cleaning is employed so as to prevent SiO2 powders from remaining in the loop.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: October 12, 2004
    Assignee: Industrial Technology Research Institute
    Inventors: Edward Y. Chang, Muh-Wang Liang, Shih-Ming Chiang, Chih-Yuan Tseng, Pang-Min Chiang
  • Publication number: 20040137753
    Abstract: A method for low temperature liquid-phase deposition and a method for cleaning a liquid-phase deposition apparatus are disclosed. The method for low temperature liquid-phase deposition is employed so as to form a low-temperature grown film or a film with excellent step-coverage on the surface of a semiconductor device having independent circuit functions. The method for cleaning liquid-phase deposition apparatus is characterized in that a loop used exclusively for cleaning is employed so as to prevent SiO2 powders from remaining in the loop.
    Type: Application
    Filed: January 15, 2003
    Publication date: July 15, 2004
    Applicant: Industrial Technology Research Institute
    Inventors: Edward Y. Chang, Muh-Wang Liang, Shih-Ming Chiang, Chih-Yuan Tseng, Pang-Min Chiang
  • Publication number: 20030088387
    Abstract: A method of measuring similarity of a first object represented by first set of feature values to a second object represented by a second set of feature values, comprising determining respective feature distance values between substantially all corresponding feature values of the first and second sets of feature values, selecting a subset of the determined feature distance values in which substantially all feature distance values that are selected to be within the subset are smaller in value than feature distance values that are not selected to be within the subset, and summing the feature distance values in the subset to produce a partial feature distance measure between the first and second objects.
    Type: Application
    Filed: September 24, 2002
    Publication date: May 8, 2003
    Inventors: Edward Y. Chang, Beitao Li
  • Publication number: 20030065661
    Abstract: A method of learning a user query concept is provided which includes a sample selection stage and a feature reduction stage; during the sample selection stage, sample objects are selected from a query concept sample space bounded by a k-CNF and a k-DNF; the selected sample objects include feature sets that are no more than a prescribed amount different from a corresponding feature set defined by the k-CNF; during the feature reduction stage, individual features are removed from the k-CNF that are identified as differing from corresponding individual features of sample objects indicated by the user to be close to the user's query concept; also during the feature reduction stage, individual features are removed from the k-DNF that are identified as not differing from corresponding individual features of sample objects indicated by the user to be not close to the user's query concept.
    Type: Application
    Filed: April 2, 2002
    Publication date: April 3, 2003
    Inventors: Edward Y. Chang, Kwang-Ting Cheng
  • Publication number: 20030050923
    Abstract: A method of learning user query concept comprising: providing a multiplicity of respective samples; soliciting user feedback as to which of the multiple presented samples are close to the user's query concept; and wherein refining a user query concept sample space.
    Type: Application
    Filed: December 21, 2001
    Publication date: March 13, 2003
    Inventors: Edward Y. Chang, Kwang-Ting Cheng
  • Publication number: 20030016250
    Abstract: A computer user interface screen comprising:
    Type: Application
    Filed: May 22, 2002
    Publication date: January 23, 2003
    Inventors: Edward Y. Chang, Kwang-Ting Cheng, Wei-Cheng Lai
  • Publication number: 20020124259
    Abstract: One or more embodiments of the invention provide a method, apparatus/system, and article of manufacture for supporting multiple interactive digital video streams. A first broadcast digital video stream is received. Thereafter, the received stream is stored into one or more I-files comprised of one or more intraframes (I-frames) and one or more PB-files comprised of one or more frames selected from a group comprising a predicted frame (P-frame) and a bidirectional predicted frame (B-frame). Such storage may be in accordance with a data placement policy (e.g., a round-robin policy, truncated binary tree policy, or truncated binary tree with data replication policy). The most appropriate scheme may also be selected based on various factors. Thereafter, first display digital video stream is provided that is based on the one or more I-files.
    Type: Application
    Filed: September 25, 2001
    Publication date: September 5, 2002
    Inventors: Edward Y. Chang, Raju Rangaswami
  • Publication number: 20010046332
    Abstract: A content-based image retrieval (CBIR) system has a front-end that includes a pipeline of one or more dynamically-constructed filters for measuring perceptual similarities between a query image and one or more candidate images retrieved from a back-end comprised of a knowledge base accessed by an inference engine. The images include at least one color set having a set of properties including a number of pixels each having at least one color, a culture color associated with the color set, a mean and variance of the color set, a moment invariant, and a centroid. The filters analyze and compare the set of properties of the query image to the set of properties of the candidate images.
    Type: Application
    Filed: March 12, 2001
    Publication date: November 29, 2001
    Applicant: The Regents of the University of California
    Inventor: Edward Y. Chang
  • Patent number: 5766967
    Abstract: A method for fabricating submicron T-shaped gates for the field-effect transistors disclosed, which can be accomplished by using a tri-layer positive photoresist with a single electron beam exposure and a single development step. Therefore, the cost can be reduced and the yield can be raised for fabricating high speed field-effect transistors.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: June 16, 1998
    Assignee: Industrial Technology Research Institute
    Inventors: Yeong-Lin Lai, Hung-Ping D. Yang, Chun-Yen Chang, Edward Y. Chang, Kazumitsu Nakamura, Rico Chang
  • Patent number: 5329626
    Abstract: During the processing of a transaction or other distributed computation, a computation management system creates a number of agents to handle various aspects or portions of the computations to be performed. Each agent progresses through a predefined set of state transitions which define the status of the agent at any point in time. The computation management system defines for each agent a set of dependencies, each dependency corresponding to a state transition which will be blocked until a particular state transition occurs in another specified agent. By defining selected combinations of dependencies for each agent, a variety of different interdependencies and cooperating protocols can be implemented. The distributed processing management system can be used both for managing transaction processing and for synchronizing events in other types of distributed computations.
    Type: Grant
    Filed: October 23, 1990
    Date of Patent: July 12, 1994
    Assignee: Digital Equipment Corporation
    Inventors: Johannes Klein, Alberto Lutgardo, Edward Y. Chang, Edward C. Cheng, Dora L. Lee, Edward S. Lu