IP Library › Granted Patent US 8,453,026
Granted Patent B2
US 8,453,026 · App. 11/565,616 · Granted May 28, 2013

Process for improving design limited yield by efficiently capturing and storing production test data for analysis using checksums, hash values, or digital fault signatures

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Quick Facts
Patent No.
US 8,453,026
App. No.
11/565,616
Granted
May 28, 2013
Kind
B2
Abstract

A process for conserving storage space and time while recording not only a pass or fail result per die but also additional failure test pattern data by computing and comparing digital fault signatures or hash values on a tester.

Claims (9)

1. A method for conserving storage space and time while recording not only a pass or fail result per die but also additional failure test pattern data by computing and comparing a plurality of digital fault signatures on automated test equipment (ATE) apparatus, comprising the steps of:

computing a digital fault signature for an ATE failure pattern,

checking if the digital fault signature has been encountered before, and

storing ATE failure data into an ATE failure pattern log only when the digital fault signature has not been encountered before.

2. The method of claim 1 wherein the digital fault signature is one of a group comprised of a checksum, a compressed file, a hash value, and an output of a linear feedback shift register.

3. The method of claim 1 wherein storing ATE failure data into the ATE failure pattern log comprises storing a pattern number and the digital fault signature.

4. The method of claim 1 wherein storing ATE failure data into the ATE failure pattern log comprises storing a pattern number, a failure pattern, and the digital fault signature.

5. The method of claim 1 wherein storing ATE failure data into the ATE failure pattern log comprises storing a failure pattern and the digital fault signature.

6. The method of claim 1 wherein storing ATE failure data into the ATE failure pattern log comprises recording on computer readable media the digital fault signature and a failure pattern when the digital fault signature is not previously recorded.

Assignments (8)
CHANGE OF ADDRESS Recorded Dec 18, 2018
From: ADVANTEST CORPORATION
To: ADVANTEST CORPORATION
Reel/Frame 047987/0626 →
CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE ADDRESS PREVIOUSLY RECORDED AT REEL: 035371 FRAME: 0265. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Apr 14, 2015
From: ADVANTEST (SINGAPORE) PTE. LTD.
To: ADVANTEST CORPORATION
Reel/Frame 035425/0768 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 6, 2015
From: ADVANTEST (SINGAPORE) PTE. LTD.
To: ADVANTEST CORPORATION
Reel/Frame 035371/0265 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 20, 2012
From: VERIGY (SINGAPORE) PTE LTD
To: ADVANTEST (SINGAPORE) PTE LTD
Reel/Frame 027896/0018 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 7, 2009
From: INOVYS CORPORATION
To: VERIGY (SINGAPORE) PTE. LTD.
Reel/Frame 023330/0760 →
RELEASE OF SECURITY INTEREST Recorded Sep 29, 2009
From: STORM VENTURES FUND II(A), LLC; STORM VENTURES FUND II, LLC; CMEA VENTURES INFORMATION TECHNOLOGY II, CIVIL LAW PARTNERSHIP; CMEA VENTURES INFORMATION TECHNOLOGY II, L.P.; PALOMAR VENTURES II, L.P.; H.I.G. INOVYS, INC.; HUITUNG INVESTMENTS (BVI) LIMITED; SHENGTUNG VENTURE CAPITAL CORPORATION; LAZAROW, WARREN T.; TRUSTEES OF THE LAZAROW FAMILY TRUST, DATED FEBRUARY 3, 2003, WARREN T. AND BARBARA M. LAZAROW; LANDINGS INVESTMENT PARTNERS, LLC; HOLLIFIELD, TED; UGMA, UNTIL THE AGE OF 21 FOR TIMOTHY JOHN MURABITO, CA; UGMA, UNTIL THE AGE OF 21 FOR MARCUS PAUL MURABITO, CA; UGMA, UNTIL THE AGE OF 21 FOR CLAYTON JAMES MURABITO, CA; UGMA, UNTIL THE AGE OF 21 FOR CHRISTIAN PHILLIP MURABITO, CA; UGMA, UNTIL THE AGE OF 21 FOR ALFRED CHARLES MURABITO III, CA; UGMA, UNTIL THE AGE OF 21 FOR COURTNEY MICHELLE MURABITO, CA; UGMA, UNTIL THE AGE OF 21 FOR AMANDA TAYLOR MURABITO, CA; UGMA, UNTIL THE AGE OF 21 FOR JOSEPH ANTHONY MURABITO, CA; MURABITO TTEE MURABITO 1994 LIVING TRUST, UA DTD 01/11/94, ALFRED CHARLES MURABITO JR. AND KATHLEEN MICHELLE; ALL CHEMICAL DISPOSAL, INC. 401(K) PROFIT SHARING PLAN; ALL CHEMICAL DISPOSAL, INC.; MURABITO 1994 LIVING TRUST DATED JANUARY 11, 1994; UGMA, UNTIL THE AGE OF 21, FBO ALFRED CHARLES MURABITO III, SARAH ELIZABETH BURLISON, CUST; UGMA, UNTIL THE AGE OF 21, FBO CHRISTIAN PHILIP MURABITO, SARAH ELIZABETH BURLISON, CUST; UGMA, UNTIL THE AGE OF 21, FBO AMANDA TAYLOR MURABITO, SARAH ELIZABETH BURLISON, CUST; UGMA, UNTIL THE AGE OF 21, FBO COURTNEY MICHELLE MURABITO, SARAH ELIZABETH BURLISON, CUST; UGMA, UNTIL THE AGE OF 21, FBO JOSEPH ANTHONY MURABITO, SARAH ELIZABETH BURLISON, CUST; TECHFARM VENTURES, L.P.; TECHFUND CAPITAL II, L.P.; SYNOPSYS, INC.; BUCKINGHAM T.I.C., JAMES R. AND LINDA L.; HARTWIG FAMILY TRUST, LINDA; QUACH, PHUONG; SOHAIL, FAYSAL; MORIHIRO, KOJI
To: INOVYS CORPORATION
Reel/Frame 023292/0417 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 28, 2008
From: CHAN, GERALD S.; DOKKEN, RICHARD C.
To: INOVYS CORPORATION
Reel/Frame 021597/0006 →
GRANT OF PATENT SECURITY INTEREST Recorded Jul 31, 2007
From: INOVYS CORPORATION
To: STORM VENTURES FUND II(A), LLC; STORM VENTURES FUND II, LLC; CMEA VENTURES INFORMATION TECHNOLOGY II, CIVIL LAW PARTNERSHIP; CMEA VENTURES INFORMATION TECHNOLOGY II, L.P.; PALOMAR VENTURES II, L.P.; H.I.G. INOVYS, INC.; HUITUNG INVESTMENTS (BVI) LIMITED; SHENGTUNG VENTURE CAPITAL CORPORATION; LAZAROW, WARREN T.; LAZAROW, TRUSTEES OF THE LAZAROW FAMILY TRUST, DATED FEBRUARY 3, 2003, WARREN T. AND BARBARA M.; LANDINGS INVESTMENT PARTNERS, LLC; HOLLIFIELD, TED; CA UGMA, UNTIL THE AGE OF 21 FOR TIMOTHY JOHN MURABITO; CA UGMA, UNTIL THE AGE OF 21 FOR MARCUS PAUL MURABITO; CA UGMA, UNTIL THE AGE OF 21 FOR CLAYTON JAMES MURABITO; CA UGMA, UNTIL THE AGE OF 21 FOR CHRISTIAN PHILLIP MURABITO; CA UGMA, UNTIL THE AGE OF 21 FOR ALFRED CHARLES MURABITO III; CA UGMA, UNTIL THE AGE OF 21 FOR COURTNEY MICHELLE MURABITO; CA UGMA, UNTIL THE AGE OF 21 FOR AMANDA TAYLOR MURABITO; CA UGMA, UNTIL THE AGE OF 21 FOR JOSEPH ANTHONY MURABITO; MURABITO TTEE MURABITO 1994 LIVING TRUST, UA DTD 01/11/94, ALFRED CHARLES MURABITO JR. AND KATHLEEN MICHELLE; ALL CHEMICAL DISPOSAL, INC. 401(K) PROFIT SHARING PLAN; ALL CHEMICAL DISPOSAL, INC.; MURABITO 1994 LIVING TRUST DATED JANUARY 11, 1994; BURLISON, CUST. UGMA, UNTIL THE AGE OF 21, FBO ALFRED CHARLES MURABITO III, SARAH ELIZABETH; BURLISON, CUST. UGMA, UNTIL THE AGE OF 21, FBO CHRISTIAN PHILLIP MURABITO, SARAH ELIZABETH; BURLISON, CUST. UGMA, UNTIL THE AGE OF 21, FBO AMANDA TAYLOR MURABITO, SARAH ELIZABETH; BURLISON, CUST. UGMA, UNTIL THE AGE OF 21, FBO COURTNEY MICHELLE MURABITO, SARAH ELIZABETH; BURLISON, CUST. UGMA, UNTIL THE AGE OF 21, FBO JOSEPH ANTHONY MURABITO, SARAH ELIZABETH; TECHFARM VENTURES, L.P.; TECHFUND CAPITAL II, L.P.; SYNOPSYS, INC.; BUCKINGHAM T.I.C., JAMES R. AND LINDA L.; HARTWIG FAMILY TRUST, LINDA; QUACH, PHUONG; SOHAIL, FAYSAL; MORIHIRO, KOJI
Reel/Frame 019617/0445 →