Patents Assigned to UniTest Incorporation
  • Patent number: 7327151
    Abstract: Disclosed is a memory application tester for testing a semiconductor memory device. A plurality of motherboards of the tester are vertically mounted and connected to memory devices to be tested mounted on an interface board via a HiFix board so that a memory application tester may test more memory device simultaneously, and a limit in the trace length due to the integration of the motherboards is effectively solved.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: February 5, 2008
    Assignee: UniTest Incorporation
    Inventor: Jong Koo Kang
  • Publication number: 20060279305
    Abstract: The present invention relates to a semiconductor test interface for interfacing a DUT (Device Under Test) to a pin card using a cable comprising a DUT board including one or more first connectors for electrically connecting one or more test sockets for mounting the DUT to the one or more cables, and a circuit wiring for electrically connecting the one or more test sockets to the one or more first connectors; and the one more cable including a second connector for an electrical connection to the one or more first connectors, and a third connector for an electrical connection to the pin card, wherein the one or more first connectors correspond to the one or more cables by 1:1. In accordance with the present invention, the manufacturing cost is reduced by simplifying the manufacturing process and the semiconductor test interface may easily correspond to the test of the different DUTs.
    Type: Application
    Filed: January 27, 2006
    Publication date: December 14, 2006
    Applicant: UNITEST INCORPORATION
    Inventors: Dae Kyoung KIM, Sun Whan KIM, Dal Jo LEE
  • Patent number: 6883128
    Abstract: The present invention relates to a test equipment of a chip memory device. A memory pattern test is implemented using a pattern generation substrate in which a processor is designed in an EPLD for thereby implementing a PC test and pattern programming, so that a test evaluated under a PC environment formed of a CPU and chip sets. Two processes of a chip device test and automatic test are performed in one equipment using a generated test pattern. The PC test and automatic test are separated using a high speed switching device which is capable of implementing a conversion without a signal distortion between the signal lines extended from the chip sets and the pattern generation substrate. Therefore, in the present invention, it is possible to enhance a test performance and decrease the test time and error ratio and cost of the products.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: April 19, 2005
    Assignee: UniTest Incorporation
    Inventors: Jong-Gu Kang, Jong-Hyun Kim