Patents by Inventor Chia-Tso Chao

Chia-Tso Chao 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: 11163003
    Abstract: An electronic device test database generating method, comprising: (a) acquiring cell layout information of a target electronic device; (b) generating possible defect location information of the target electronic device according to the cell layout information, wherein the possible defect location information comprises at least one possible defect location of the target electronic device; (c) testing the target electronic device according to the possible defect location information to generate a testing result; and (d) generating an electronic device test database according to the testing result.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: November 2, 2021
    Assignee: Realtek Semiconductor Corp.
    Inventors: Po-Lin Chen, Ying-Yen Chen, Chia-Tso Chao, Tse-Wei Wu
  • Patent number: 10496505
    Abstract: The present invention discloses an IC test method including the following steps: generating N test patterns; testing each of M chip(s) according to the N test patterns so as to generate N×M records of quiescent DC current (IDDQ) data; generating N reference values according to the N×M records, in which each of the N reference values is generated according to M record(s) of the N×M records, and the M record(s) and the reference value generated thereupon are related to the same one of the N test patterns; obtaining a reference order of the N test patterns according to the N reference values and a sorting rule; reordering the N×M records by the reference order so as to obtain reordered N×M records; generating an IDDQ range according to the reordered N×M records; and determining whether any of the M chip(s) is defective based on the IDDQ range.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: December 3, 2019
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Wen-Hsuan Hsu, Ying-Yen Chen, Cheng-Yan Wen, Chia-Tso Chao, Jih-Nung Lee
  • Publication number: 20190346508
    Abstract: An electronic device test database generating method, comprising: (a) acquiring cell layout information of a target electronic device; (b) generating possible defect location information of the target electronic device according to the cell layout information, wherein the possible defect location information comprises at least one possible defect location of the target electronic device; (c) testing the target electronic device according to the possible defect location information to generate a testing result; and (d) generating an electronic device test database according to the testing result.
    Type: Application
    Filed: November 28, 2018
    Publication date: November 14, 2019
    Inventors: Po-Lin Chen, Ying-Yen Chen, Chia-Tso Chao, Tse-Wei Wu
  • Publication number: 20180181477
    Abstract: The present invention discloses an IC test method including the following steps: generating N test patterns; testing each of M chip(s) according to the N test patterns so as to generate N×M records of quiescent DC current (IDDQ) data; generating N reference values according to the N×M records, in which each of the N reference values is generated according to M record(s) of the N×M records, and the M record(s) and the reference value generated thereupon are related to the same one of the N test patterns; obtaining a reference order of the N test patterns according to the N reference values and a sorting rule; reordering the N×M records by the reference order so as to obtain reordered N×M records; generating an IDDQ range according to the reordered N×M records; and determining whether any of the M chip(s) is defective based on the IDDQ range.
    Type: Application
    Filed: December 6, 2017
    Publication date: June 28, 2018
    Inventors: WEN-HSUAN HSU, YING-YEN CHEN, CHENG-YAN WEN, CHIA-TSO CHAO, JIH-NUNG LEE
  • Patent number: 9244122
    Abstract: A method of determining the performance of a chip of an integrated-circuit design comprises instantiating a plurality of HPM in the integrated-circuit design to generate the performance of the chip according to a performance function defined by a polynomial comprising a plurality of terms, wherein each term of the polynomial comprises an exponent of a value generated by a corresponding one of the plurality of HPM(s) and a corresponding coefficient, wherein the coefficients are determined through a regression process with sample chips of the integrated-circuit design having known performance, so that the performance of each chip other than the sample chips can be determined by the performance function and the values of the plurality of HPM(s) of the chip.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: January 26, 2016
    Assignees: Global Unichip Corp., Taiwan Semiconductor Manufacturing Company Ltd.
    Inventors: Shi-Hao Chen, Yung-Sheng Fang, Szu-Pang Mu, Mango Chia-Tso Chao
  • Publication number: 20150042369
    Abstract: The present invention discloses an efficient method to determine the performance of an integrated circuit or a chip by instantiating a plurality of HPM in the integrated circuit to generate the performance of the integrated circuit according to a performance function, wherein each term of the performance function is based on the values of the HPM(s) and the weighting of the term is determined through machine leaning, so that the performance of each chip can be determined by the performance function.
    Type: Application
    Filed: August 6, 2013
    Publication date: February 12, 2015
    Applicants: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD., GLOBAL UNICHIP CORP.
    Inventors: Shi-Hao Chen, Yung-Sheng Fang, Szu-Pang Mu, Mango Chia-Tso Chao
  • Patent number: 7313746
    Abstract: A spatial compactor design and technique for the compaction of test response data is herein disclosed which advantageously provides a scan-out response with multiple opportunities to be observed on different output channels in one to several scan-shift cycles.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: December 25, 2007
    Assignee: NEC Laboratories America, Inc.
    Inventors: Chia-Tso Chao, Seongmoon Wang, Srimat T. Chakradhar
  • Patent number: 7222277
    Abstract: A test output compaction architecture and method that takes advantage of a response shaper in order to minimize masking of faults during compaction. A response shaper is inserted between a plurality of scan chains and an output compactor. The response shaper receives output responses from scan chains and reshapes the output responses in a manner that minimizes masking of faults by the output compactor.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: May 22, 2007
    Assignee: NEC Laboratories America, Inc.
    Inventors: Seongmoon Wang, Srimat T. Chakradhar, Chia-Tso Chao
  • Publication number: 20070088999
    Abstract: A spatial compactor design and technique for the compaction of test response data is herein disclosed which advantageously provides a scan-out response with multiple opportunities to be observed on different output channels in one to several scan-shift cycles.
    Type: Application
    Filed: March 29, 2006
    Publication date: April 19, 2007
    Applicant: NEC Laboratories America, Inc.
    Inventors: Chia-Tso Chao, Seongmoon Wang, Srimat Chakradhar
  • Publication number: 20060101316
    Abstract: An improved test output compaction architecture and method is disclosed that takes advantage of a response shaper in order to minimize masking of faults during compaction.
    Type: Application
    Filed: November 10, 2004
    Publication date: May 11, 2006
    Applicant: NEC Laboratories America, Inc.
    Inventors: Seongmoon Wang, Srimat Chakradhar, Chia-Tso Chao