IP Library Granted Patent US 7,975,248
Granted Patent B2
US 7,975,248 · App. 11/949,187 · Granted Jul 5, 2011

Staged scenario generation

Assignee: LSI Corporation
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Quick Facts
Patent No.
US 7,975,248
App. No.
11/949,187
Granted
Jul 5, 2011
Kind
B2
Abstract

A method of verifying integrated circuit designs, by constructing a series of atomic generators in a staged, hierarchical order, applying a lowest of the hierarchical generator stages to device level test cases of the verification process, applying a highest of the hierarchical generator stages to system level test cases of the verification process, reusing code written for and used in the lowest hierarchical generator stage in a next higher generator stage, creating a constraint scenario in the highest hierarchical generator stage, and injecting the constraint scenario into a next lower generator stage.

Claims (7)

1. A processor-based method of verifying integrated circuit designs, the method comprising the steps of:

constructing with the processor in a processor-accessible memory a series of atomic generators in a staged, hierarchical order,

applying with the processor a lowest of the hierarchical generator stages to device level test cases of the verification process,

applying with the processor a highest of the hierarchical generator stages to system level test cases of the verification process,

reusing processor programming code written for and used in the lowest hierarchical generator stage in a next higher generator stage,

creating with the processor a constraint scenario in the highest hierarchical generator stage, and

injecting with the processor the constraint scenario into a next lower generator stage.

Assignments (9)
RELEASE OF SECURITY INTEREST Recorded Apr 15, 2022
From: CORTLAND CAPITAL MARKET SERVICES LLC
To: HILCO PATENT ACQUISITION 56, LLC; BELL SEMICONDUCTOR, LLC; BELL NORTHERN RESEARCH, LLC
Reel/Frame 059720/0223 →
SECURITY INTEREST Recorded Feb 1, 2018
From: HILCO PATENT ACQUISITION 56, LLC; BELL SEMICONDUCTOR, LLC; BELL NORTHERN RESEARCH, LLC
To: CORTLAND CAPITAL MARKET SERVICES LLC, AS COLLATERAL AGENT
Reel/Frame 045216/0020 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 17, 2017
From: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.; BROADCOM CORPORATION
To: BELL SEMICONDUCTOR, LLC
Reel/Frame 044887/0109 →
TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENTS Recorded Feb 3, 2017
From: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
To: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.
Reel/Frame 041710/0001 →
PATENT SECURITY AGREEMENT Recorded Feb 11, 2016
From: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.
To: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
Reel/Frame 037808/0001 →
TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENT RIGHTS (RELEASES RF 032856-0031) Recorded Feb 2, 2016
From: DEUTSCHE BANK AG NEW YORK BRANCH, AS COLLATERAL AGENT
To: LSI CORPORATION; AGERE SYSTEMS LLC
Reel/Frame 037684/0039 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 3, 2015
From: LSI CORPORATION
To: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.
Reel/Frame 035390/0388 →
PATENT SECURITY AGREEMENT Recorded May 8, 2014
From: LSI CORPORATION; AGERE SYSTEMS LLC
To: DEUTSCHE BANK AG NEW YORK BRANCH, AS COLLATERAL AGENT
Reel/Frame 032856/0031 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 3, 2007
From: PATEL, SIDHESH; BODHAK, PRAKASH
To: LSI CORPORATION
Reel/Frame 020187/0197 →
Continuity (1)
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