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Cadence Design Systems

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Cadence Design Systems, Inc. (stylized as cādence)[2] is an American multinational technology and computational software company.[3] Headquartered in San Jose, California,[2] Cadence was formed in 1988 through the merger of SDA Systems and ECAD.[3] Initially specialized in electronic design automation (EDA) software for the semiconductor industry,[4] currently the company makes software and hardware for designing products such as integrated circuits, systems on chips (SoCs), printed circuit boards,[3] and pharmaceutical drugs, also licensing intellectual property for the electronics, aerospace, defense and automotive industries, among others.[5]

Cadence Design Systems, Inc.
Company typePublic
IndustrySoftware
Predecessors
Founded1983; 41 years ago (1983) in San Jose, California as Solomon Design Automation (SDA), renamed Cadence Design Systems in 1988
Founders
HeadquartersSan Jose, California, U.S.
Key people
Anirudh Devgan (president, CEO)
Lip-Bu Tan (executive chairman)
RevenueIncrease US$4.09 billion (2023)
Increase US$1.25 billion (2023)
Increase US$1.04 billion (2023)
Total assetsIncrease US$5.67 billion (2023)
Total equityIncrease US$3.40 billion (2023)
Number of employees
approx. 11,200 (December 2023)
Websitecadence.com
Footnotes / references
[1]

History

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1983–1999

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Founded in 1983 in San Jose, California,[6] Cadence Design Systems began as an electronic design automation (EDA) company named Solomon Design Automation (SDA).[4] SDA's cofounders included James Solomon, Richard Newton,[4] and Alberto Sangiovanni-Vincentelli.[4][7] Cadence was formed by the merger of SDA and ECAD. A public company,[4] ECAD had been co-founded by Ping Chao, Glen Antle, and Paul Huang in 1982.[4][failed verification] Cadence Design Systems was officially formed through SDA and ECAD's 1988 merger,[4] with Joseph Costello was appointed both CEO and president of the newly combined company. After the merger, Cadence began trading on the New York Stock Exchange and Costello oversaw further mergers and acquisitions.[4]

In 1989, the company acquired Gateway Design Automation for $72 million.[8] In 1990 it acquired Automated Systems Inc., and in doing so added "board design to its existing line of chip design software."[9] In 1991, Cadence acquired its rival Valid Logic Systems for around $200 million, its biggest acquisition yet. The revenues of the combined company were $390 million, making Cadence "the largest provider of the software used by electronic engineers to design computer chips and circuit boards," according to the New York Times.[4]

In 1996, Cadence acquired High Level Design Systems,[10] at which point Cadence had 3,300 employees and $742 million in annual revenue. Following the resignation of Cadence's original CEO Joe Costello in 1997, Jack Harding was appointed CEO.[11] Ray Bingham was named CEO in 1999.[12] Cadence purchased Ambit Design Systems for $260 million, which made tools for system-on-a-chip technology, in 1998,[13] and OrCAD Systems in 1999.[14] After acquiring Quickturn Design in 1999, Cadence was described as a "white knight" for the act by the New York Times, as Quickturn had been subject to a hostile takeover by Cadence's rival Mentor Graphics.[15]

2000–2019

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Under urging by executives such as Jim Hogan and executive vice president Penny Herscher, between 2001 and 2003, Cadence purchased a number of implementation tools through acquisition, such as Silicon Perspective, Verplex,[16] and Celestry Design.[17] The acquisitions were apparently in part to counter the 2001 purchase of Avanti by Synopsys, as Synopsys had become their primary market rival.[16] In 2004, Mike Fister became Cadence's new CEO and president, with Ray Bingham becoming chairman. The former chairman, Donald L. Lucas, remained on the Cadence board.[18] Between 2004 and 2007, Cadence purchased four companies, including the software developer Verisity, and in 2006, it spent $1 billion in stock buybacks.[6]

In 2007, Cadence announced it would be introducing a new chip-making process that laid wires diagonally as well as horizontally and vertically, arguing it would make its designs more efficient. In June 2007, Cadence had a market value of around $6.4 billion. That year, Cadence was rumored to be in talks with Kohlberg Kravis Roberts and Blackstone Group regarding a possible sale of the company.[6] Cadence withdrew a $1.6 billion offer to purchase Mentor Graphics in 2008.[19] Also that year, Cadence's board appointed Lip-Bu Tan as acting CEO, after the resignation of Mike Fister; Tan had served on the Cadence board of directors since 2004.[20] In January 2009, the board of directors of Cadence voted unanimously to confirm Lip-Bu Tan as president and CEO.[21] In 2011, it purchased Altos Design Automation.[22] Subsequent notable acquisitions included Cosmic Circuits[23] and Tensilica in 2013,[24] Forte Design Systems in 2014,[25] and the AWR Corporation in 2019.[26]

2020–2024

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Cadence had 9,300 employees and annual revenue of $3 billion in 2021.[5] Most of its revenue came from licensing its software and intellectual property.[27] In April 2021, following a Washington Post report on the use of Cadence and Synopsys technology in the People's Liberation Army's military-civil fusion efforts,[28] U.S. legislators Michael McCaul and Tom Cotton requested that the United States Department of Commerce tighten controls on the sales of semiconductor manufacturing software.[29][30] On December 15, 2021, Anirudh Devgan assumed the role of Cadence president & CEO, after having been named Cadence president in 2017. Lip-Bu Tan retired as CEO and became executive chairman.[31] In 2021, Cadence launched an artificial intelligence platform to streamline processor development.[32]

Although most of Cadence's customers for decades were "traditional semiconductor firms," around 40% of Cadence's revenue by 2022 came from customers who were "systems" oriented, or seeking products tailored for various industries that utilized chips in a central role. Cadence was also increasingly designing customized chips for clients and having them manufactured by third parties such as Taiwan Semiconductor Manufacturing, a practice which had become more popular in the face of worldwide chip shortages and shipping issues, according to Reuters.[13] By late 2022, Cadence had clients such as Tesla and Apple Inc.[13] Cadence acquired OpenEye Scientific Software for $500 million in September 2022, rebranding the company OpenEye Cadence Molecular Sciences and making it into a business unit.[5] OpenEye signed Pfizer as a software client in October 2023.[33]

Cadence purchased various businesses from Rambus in 2023.[34] As of September 2023, Cadence was "looking into" applying for funding from the $52 billion CHIPS and Science Act, passed in 2022 bring more of the international semiconductor supply chain into the United States.[35] In February 2024, Cadence "quietly stepped into the supercomputer business," according to TechRadar, when it unveiled the M1, its own supercomputer designed to run computational fluid dynamics (CFD) while utilizing AI.[36] In June 2024, Cadence purchased BETA CAE Systems.[37]

Products

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Originally known as a creator of electronic design automation (EDA) software,[13] the company currently develops software, hardware[38] and intellectual property (IP) used to design chips,[39] chiplet-style products,[40] and printed circuit boards,[9] while also selling hardware systems that run its chip design software.[38]

It also has tools for "electromagnetics, thermal and computational fluid dynamics in the high-tech electronics, aerospace and defense and automotive sectors,"[5] and according to Investor's Business Daily in 2023, it specializes in products for fields such as "artificial intelligence and machine learning, cloud computing, 3D technology, and AI-enabled big data analytics."[41] Among market applications are "hyperscale computing, 5G communications, automotive, mobile, aerospace, consumer, industrial and health care."[5]

Integrated circuit software

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The company develops a number of technologies for creating custom integrated circuits. For example, its Virtuoso Platform,[42] later renamed Virtuoso Studio,[43] incorporates tools for designing full-custom integrated circuits.[42] In 2019, Cadence introduced its Spectre X parallel circuit simulator, so that users could distribute time- and frequency-domain simulations across hundreds of CPUs for speed.[44] Cadence also developed AWR, a radio frequency to millimeter wave design environment for designing 5G/wireless products. AWR is used for communications, aerospace and defense, semiconductor, computer, and consumer electronics.[45][46]

Digital implementation and signoff

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Cadence has a number of digital implementation and signoff tools, including Genus, Innovus, Tempus & Voltus, among others. In 2020, Cadence integrated its Innovus place and route engine and optimizer into Genus Synthesis.[47] Stratus is Cadence's high-level synthesis tool, and is used to create RTL implementations from C, C++, or SystemC code.[48] Other formal verification and signoff tools include Conformal Equivalence Checker,[49] Joules RTL Power Solution,[50] Quantus Extraction Solution,[51] and Cadence's Modus DFT Software Solution.[52]

System verification

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Cadence has developed a number of formal verification products for chip design. JasperGold is a formal verification tool, initially introduced in 2003[53] and upgraded with machine learning in 2019.[54] vManager is a verification management tool for tracking the verification process.[55][56] Cadence announced Perspec System Verifier in 2014 for defining and verifying system-level verification scenarios,[57] with Perspec made compatible with the Accellera Portable Test and Stimulus Standard (PSS) several years later.[58] Introduced in 2017, Cadence's parallel simulator Xcelium is based on a multi-core parallel computing architecture.[59]

Hardware emulation

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In 2015, Cadence announced the Palladium Z1 hardware emulation platform,[60] with over 100 million gates per hour compile speed, and greater than 1 MHz execution for billion-gate designs.[61] which was based on emulation technology from Cadence's 1998 acquisition of Quickturn.[15] Cadence announced Palladium Z2 in 2021, claiming a 1.5X performance and 2X capacity improvement over the Z1.[62][63]

The Protium FPGA prototyping platform was introduced in 2014,[64] followed by the Protium S1 in 2017, which was built on Xilinx Virtex UltraScale FPGAs.[65] Protium X1 rack-based prototyping was introduced in 2019,[66] which Cadence claimed supported a 1.2 billion gate SoCs at around 5 MHz.[67] with Palladium S1/X1 and Protium sharing a single compilation flow.[68] IIn 2021, Protium X2 was announced; Cadence claimed a 1.5X performance and 2X capacity improvement over Protium X1.[69][70]

SIP blocks

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See also: Tensilica § Cadence Tensilica products

Cadence supplies semiconductor intellectual property (SIP) blocks, covering interface design, USB, MIPI, ethernet,[71] memory, analog, SoC peripherals, and data plane processing units. Cadence also develops chip verification technologies including simulators and formal verification tools.[citation needed] Cadence develops Tensilica DSP processors for audio, vision, wireless modems, and convolutional neural nets. Tensilica DSP processors IP in 2019[72] included: Tensilica Vision DSPs for imaging, vision, and AI processing;[73][74] Tensilica HiFi DSPs for audio processing;[75][76] Tensilica Fusion DSPs for IoT;[77] Tensilica ConnX DSPs for radar, lidar, and communications processing;[78][79] and Tensilica DNA Processor Family for AI acceleration.[80][81] In 2021, Cadence launched the Tensilica AI Platform to accelerate AI SoC development and improve performances.[82]

PCB and packaging technologies

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The company has a number of printed circuit board (PCB) and packaging technologies for designing circuit boards. Its Allegro Platform has tools for co-design of integrated circuits, packages, and PCBs. OrCAD/PSpice has tools for smaller design teams and individual PCB designers.[83] OrbitIO Interconnect Designer is a die/package planning & route optimization tool.[84] InspectAR uses augmented reality to map out complicated circuit board electronics for real-time labelling of board schematics.[85]

Systems design and analysis

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The company has a number of tools for system analysis. Sigrity has tools for signal, power integrity, and thermal integrity analysis and IC package design.[86] Introduced in April 2019 as part of Cadence's expansion into system analysis, Clarity is a 3D field solver for electromagnetic analysis, that uses distributed adaptive meshing to partition jobs across multiple cores.[87] In September 2019, Cadence announced Celsius, a parallel architecture thermal solver that uses finite element analysis for solid structures and computational fluid dynamics (CFD) for fluids.[88] Cascade Technologies, Inc includes hi-fidelity CFD solvers for multiphysics analysis of turbulence fluid flow.[89] Acquired by Cadence from Pointwise in 2021, Fidelity Pointwise is for computational fluid dynamics (CFD) mesh generation.[90]

Machine design and digital twins

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Cadence in 2021 acquired a number of system analysis products from NUMECA,[91] known for software tools used in the automotive, marine, aerospace, and power generation industries.[92] Among the tools were Fidelity (formerly known as OMNIS), a computational fluid dynamics (CFD), mesh generation, multi-physics simulation, and optimization product.[91]  Its Cadence Reality digital twin platform creates manipulatable digital models of designs or factories.[93]

Cadence Design Systems in February 2024 launched its Cadence Millennium Enterprise Multiphysics Platform, or Millennium M1. The hardware/software combination was designed for creating digital twins.[94] It draws from Cadence's older Fidelity CFD suite.[95]

Drug design

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Cadence's OpenEye Scientific division has computational molecular modeling and simulation software used by pharmaceutical and biotechnology companies for purposes such as drug discovery[5] and antibody discovery.[96] The Orion is OpenEye's software-as-a-service platform.[97] OpenEye Scientific has its headquarters in Santa Fe, New Mexico.

Artificial intelligence

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The company was increasingly incorporating artificial intelligence (AI) in 2023, according to Reuters, by "providing tools to design chips for AI" as well as by "adding AI into its own software to help in the complex process of designing chips."[38] Cerebrus was released in 2021, and is a machine learning-based chip which utilizes reinforcement learning and is meant to automatically optimize the Cadence digital design flow.[98][32] In 2022, Cadence introduced the AI platform Optimality Intelligent System Explorer, a system design tool with multiphysics system analysis software. Designed to be compatible with Clarity 3D and SigrityX, Microsoft was an early adopter.[99] In September 2023, Cadence released software called ChipGPT, allowing companies to create custom silicon with assistance from AI.[100]

Recognition

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In 2016, Cadence CEO Lip-Bu Tan was awarded the Dr. Morris Chang Exemplary Leadership Award by the Global Semiconductor Alliance.[101] In 2019, Investor's Business Daily ranked Cadence Design Systems #5 on its 50 Best Environmental, Social, and Governance (ESG) Companies list.[102] In 2020, Cadence ranked #45 on People Magazine's Companies that Care list.[103] Fortune Magazine named Cadence to its 100 Best Companies to Work For list for the sixth consecutive year in 2020.[104]

Sponsorship

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In May 2022, the Formula 1 motor racing team McLaren announced a multi-year partnership deal with Cadence.[105] Cadence partnered with the San Francisco 49ers in April 2023 on a several year technology project to fix energy efficiencies at Levi's Stadium. The deal also gave Cadence the naming rights to the team's mobile app.[106]

Acquisitions timeline

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Year
announ-
ced 		Company Business Value (USD) Refe-
rences
1989 Gateway Design Automation Simulation software $72 million [8]
1990 Automated Systems, Inc. PCB Design Automation $23 million [107]
1991 Valid Logic Systems Gate-level design $198 million [108][109]
1993 Comdisco Systems Digital signal processing & communications design $13 million [110]
1996 High Level Design Systems Inc. Advanced design technology for integrated circuits $94 million [10]
1997 Cooper & Chyan Technology
UniCAD 		Placement and routing (Specctra AutoRouter) and UniCAD (PCB Design) $422 million [111][112][113]
1998 Ambit Design Systems System-on-a-chip technology $260 million [13]
1998 Bell Labs Design Automation Simulation and verification software $45 million [114]
1998 Quickturn Design Systems Emulation hardware $253 million [115]
1999 OrCAD Systems PCB & FPGA design $121 million [14]
2002 IBM's DFT tools & group Design for testing not disclosed [116]
2003 Celestry Design Dense modeling, full-chip circuit simulation not disclosed [17]
2001-
2003 		CadMOS
Plato
Get2Chip
Silicon Perspective
Simplex 		CadMOS (signal integrity), Plato (routing), Get2Chip (logic synthesis), Silicon Perspective Corp. (floor planning and placement), Simplex (extraction and power analysis) multiple [16]
2003 Verplex Formal verification, equivalence checkers not disclosed [117]
2004 Neolinear Analog & mixed-signal layout, circuit sizing not disclosed [118]
2005 Verisity Verification automation, hardware acceleration $315 million [119]
2006 Praesagus Manufacturing variation predication $26 million [120]
2007 Invarium Lithography-modeling and pattern-synthesis not disclosed [121]
2007 Clear Shape Design for Manufacturing not disclosed [122][123]
2008 Chip Estimate IP portal, IP reuse management not disclosed [124]
2010 Denali Software Memory models, design IP, verification IP $315 million [125]
2011 Altos Design Automation Foundation IP characterization, such as memory, standard cell libraries not disclosed [22][126]
2011 Azuro Clock concurrent optimization not disclosed [127]
2012 Sigrity Signal, power & thermal integrity analysis, IC package design $80 million [128][86]
2013 Cosmic Circuits Analog & mixed-signal IP for mobile device IP, such as USB, MIPI, audio & Wi-Fi cores not disclosed [23][129]
2013 Tensilica Dataplane processing IP $380 million [24][130]
2013 Evatronix Semiconductor IP: USB, MIPI, display, & storage interfaces not disclosed [131]
2014 Forte Design Systems High-level synthesis not disclosed [25][132]
2014 Jasper Design Automation Formal analysis & verification $170 million [133][134]
2016 Rocketick Technologies Multi-core parallel simulator not disclosed [135]
2017 nusemi High-speed Serializer/Deserializer (SerDes) communications IP $182 million [136]
2019 AWR Corporation Wireless/high-frequency radio-frequency application design software $160 million [26]
2020 Integrand Software Method of moments solver technology for analysis & extraction for simulating large IC and packages, characterization, and analysis in 3D-IC systems not disclosed [137][138]
2020 InspectAR Augmented Interfaces Maps electronics & labels circuit board schematics in real-time using augmented reality not disclosed [139][140]
2021 NUMECA CFD, mesh generation, multi-physics simulation & optimization not disclosed [91]
2021 Pointwise Computational fluid dynamics (CFD) mesh generation not disclosed [90]
2022 Future Facilities CFD solution provider for electronics cooling and energy performance optimization solutions for data center design and operations not disclosed [141]
2022 OpenEye Scientific Computational molecular modeling and simulation software used by pharmaceutical and biotechnology companies for drug discovery $500 million [5]
2023 Pulsic Full custom IC floorplanning, placement, and routing tools $59.9 million [142]
2023 Rambus Completion of acquisition of SerDes and memory interface PHY IP business from Rambus Inc. not disclosed [34]
2023 Intrinsix Corporation Semiconductor design services provider not disclosed [143]
2024 Invecas Inc Design engineering, embedded software and system-level solutions provider not disclosed [144]
2024 BETA CAE Simulation and analysis software $1.24 billion [37]

Lawsuits

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  • Avanti Corporation
    Main article: Cadence Design Systems, Inc. v. Avanti Corp
    From 1995 until 2002, Cadence was involved in a 6-year-long legal dispute[145] with Avanti Corporation (brand name "Avant!"), in which Cadence claimed Avanti stole Cadence code, and Avanti denied it. According to Business Week "The Avanti case is probably the most dramatic tale of white-collar crime in the history of Silicon Valley".[145] The Avanti executives eventually pleaded no contest and Cadence received several hundred million dollars in restitution. Avanti was then purchased by Synopsys, which paid $265 million more to settle the remaining claims.[146] The case resulted in a number of legal precedents.[147]
  • Aptix Corporation Quickturn Design Systems, a company acquired by Cadence, was involved in a series of legal events with Aptix Corporation. Aptix licensed a patent to Mentor Graphics and the two companies jointly sued Quickturn over an alleged patent infringement. Amr Mohsen, CEO of Aptix, forged and tampered with legal evidence and was subsequently charged with conspiracy, perjury, and obstruction of justice. Mohsen was arrested after violating his bail agreement by attempting to flee the country. While in jail, Mohsen plotted to intimidate witnesses and kill the federal judge presiding over his case.[148] Mohsen was further charged with attempting to delay a federal trial by feigning incompetency.[149][150] Due to the overwhelming misconduct, the judge ruled the lawsuit as unenforceable and Mohsen was sentenced to 17 years in prison.[151] Mentor Graphics subsequently sued Aptix to recoup legal costs. Cadence also sued Mentor Graphics and Aptix to recover legal costs.[152]
  • Berkeley Design Automation In 2013, Cadence sued Berkeley Design Automation (BDA) for circumvention of a license scheme to link its Analog FastSpice (AFS) simulator to Cadence's Analog Design Environment (Virtuoso ADE).[153] The lawsuit was settled less than one year later with an undisclosed payment of BDA and a multi-year agreement to support interoperability of AFS with ADE through Cadence's official interface. BDA was bought by Mentor Graphics a few months later.[154]

See also

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References

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  90. ^ a b eeNews OneSpin deal leads flurry of EDA acquisitions: Page 2 of 3 Retrieved Apr 15, 2021
  91. ^ a b c eeNews Europe Cadence buys Belgian CFD specialist Retrieved Jan 21, 2021
  92. ^ "Week In Review: Auto, Security, Pervasive Computing". Semiconductor Engineering. January 22, 2021. Retrieved March 13, 2024.
  93. ^ Takahashi, Dean (March 18, 2024), Nvidia Omniverse Cloud APIs will elevate digital twins for a new industrial revolution, VentureBeat{{citation}}: CS1 maint: year (link)
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  95. ^ WIlliams, Wayne (February 14, 2024), Firm behind software used by AMD, Nvidia to make GPU and CPUs quietly unveils its own supercomputer — as it appears to emulate Apple by bringing hardware and software closer together, TechRadar{{citation}}: CS1 maint: year (link)
  96. ^ Cadence CEO Drives Growth Beyond Chip Design With AI And Computational Software, Forbes, April 11, 2023{{citation}}: CS1 maint: year (link)
  97. ^ "Cadence expands into molecular simulation". New Electronics. July 26, 2022.
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  100. ^ How do you design better, smart AI chips? Use AI, of course, Fast Company, March 19, 2024{{citation}}: CS1 maint: year (link)
  101. ^ GSA Website Dr. Morris Chang Exemplary Leadership Award Winner Retrieved November 28, 2020
  102. ^ "50 Best ESG Companies: A List Of Today's Top Stocks For Environmental, Social And Governance Values". Investor's Business Daily. 2 December 2019.
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  105. ^ "McLaren Racing - McLaren Racing and Cadence announce new multi-year partnership". www.mclaren.com. Retrieved 2022-11-18.
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  107. ^ NY Times Cadence Acquires Software Company Retrieved April 11, 1990
  108. ^ UPI Cadence Design, Valid Logic Retrieved October 2, 1991
  109. ^ SemiEngineering Valid Logic Systems Retrieved November 29, 2020
  110. ^ Funding Universe Cadence Design Systems History Retrieved January 20, 2005
  111. ^ Cadence to Buy Cooper & Chyan Retrieved October 29, 1996
  112. ^ Wall Street Journal Cadence Design Systems Agrees To Purchase Cooper & Chyan Retrieved October 29, 1996
  113. ^ "Cadence Acquires CCT and UniCAD". edn.com. EDN. 1996-11-21. Retrieved 8 December 2022.
  114. ^ "Cadence 'Formally' Acquires BLDA – Cadence Design Systems buys Bell Labs Design Automation from Lucent Technologies". Electronic News. 1998. Retrieved 20 August 2021.
  115. ^ "Cadence to Acquire Quickturn Design". The New York Times. 10 December 1998. Retrieved 3 April 2015.
  116. ^ EE Times Cadence buys IBM's design-for-test tools business Retrieved October 1, 2002
  117. ^ Santarini, Michael (July 14, 2003). "Cadence buys formal tool vendor Verplex". EE Times. Retrieved December 21, 2017.
  118. ^ "Cadence acquires analog layout vendor Neolinear". EE Times. April 6, 2004.
  119. ^ EE Times Cadence completes acquisition of Verisity Retrieved April 7, 2005
  120. ^ "Cadence bought DFM startup Praesagus for $26 million".
  121. ^ Electronic Design Cadence Acquires Invarium To Beef Up DFM Technology Retrieved July 22, 2007
  122. ^ "Cadence Design Systems buys chip design co., Clear Shape | VentureBeat". venturebeat.com. 17 August 2007. Retrieved 2017-12-20.
  123. ^ EDN Cadence to acquire Clear Shape Retrieved January 20, 2005
  124. ^ Leopold, George (March 21, 2008). "Cadence buys IP reuse specialist Chip Estimate". EE Times. Retrieved December 20, 2017.
  125. ^ EDN Cadence to buy Denali for $315 million Retrieved May 13, 2010
  126. ^ Silicon Valley Business Journal Cadence acquires Altos Design Automation Retrieved May 10, 2011
  127. ^ EE Times Cadence acquires power specialist Azuro Retrieved July 12, 2011
  128. ^ Evertiq Cadence acquires Sigrity Retrieved July 3, 2012
  129. ^ EE Times Cadence buys analog IP startup Retrieved February 7, 2013
  130. ^ VentureBeat Cadence buys chip design firm Tensilica for $380m Retrieved March 11, 2013
  131. ^ EE Times Cadence buying Evatronix to boost IP pool Retrieved May 7, 2013
  132. ^ Electronics 360 The Math Backs Cadence's Forte Acquisition Retrieved February 6, 2014
  133. ^ eeNews Embedded Cadence Grows formal verification profile with Jasper DA buyout Retrieved April 23, 2014
  134. ^ Electronics 360 Cadence Keeps Consolidating with Jasper Purchase Retrieved April 22, 2014
  135. ^ EENews Analog Cadence acquires parallel logic simulation speed-up tech with Rocketick purchase Retrieved April 13, 2016
  136. ^ eeNews Analog Cadence grows high-speed communications IP offering with nusemi dea Retrieved November 2, 2017
  137. ^ New Electronics Cadence makes Integrand acquisition Retrieved February 17, 2020
  138. ^ everythingRF Cadence Accelerates Innovation in 5G RF Communications by Acquiring Integrand Retrieved February 14, 2020
  139. ^ CBC A new chapter: Silicon Valley firm buys St. John's tech company Retrieved August 13, 2020
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  146. ^ EEDesign article about the final settlement.
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  148. ^ In Courts, Threats Become Alarming Fact of Life, Deborah Sontag, The New York Times, 20 March 2005
  149. ^ Odd legal saga takes an ugly turn, Richard Goering, EE Times, 02 August 2004
  150. ^ Jury finds Mohsen guilty of perjury, obstruction of justice, Dylan McGrath, EE Times, 28 February 2006
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  153. ^ Cadence sues Berkeley Design Automation, Dylan McGrath, EE Times, 15 April 2013
  154. ^ Mentor buys Berkeley DA after Cadence lawsuit, Peter Clarke, eeNews Europe, 24 March 2014
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