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CadencePatent grant

Cadence was granted a patent for balancing buffers in clock-tree layouts.

What happened

In September 2026 Cadence patented chip-design software for improving clock distribution across integrated circuits by placing buffers along H-tree wiring.

Source

patents.google.comSep 22, 2026

US patent US12743573

Balancing buffer insertion for clock H-trees

Abstract

Aspects of the present disclosure include system, methods, and software for creating an H-tree routing layout. In one example, a method includes an H-tree routing layout that has a plurality of vertical traces and horizontal traces connecting a clock source to a plurality of clock sinks. The method positions a plurality of candidate buffers in the H-tree routing layout. The method assigns a 4-dimensional (4D) vector to each candidate buffer of the plurality of candidate buffers, and derives one or more merge buffer combinations from the plurality of candidate buffers based on the assigned 4D vector of at least two candidate buffers of the plurality of candidate buffers. The method also applies a threshold vector to select one or more final candidate buffers from the merge buffer combinations.

patents.google.com/patent/US12743573Read the full source

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From the Signal API record
Signal
Patent grant

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Grant date
Sep 22, 2026
Inventors
Yi-Xiao Ding, Charles Jay Alpert
Tech area
software / computing
Patent number
US12743573

The full record

From the Signal API record

People

  • Yi-Xiao DingInventor
  • Zhuo LiInventor
  • Charles Jay AlpertInventor

Details

Primary CPC class
G06F 30/396 (Electric digital data processing)
USPTO assignee
Cadence Design Systems, Inc.
What the invention does
A method that scores possible buffer locations in a branching clock network and uses those scores to distribute timing support more evenly.

Topics and mentions

Tags

  • Intellectual Property
  • Research & Development
  • Engineering
  • Software

Technologies named

  • electronic design automation
  • clock-tree synthesis
  • integrated-circuit design
  • buffer placement

Extraction

Detected
Sep 23, 2026
signal_type
patents-company
signal_subtype
patentGrant

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Company

  • linkedin_urlValue in the API
  • industriesValue in the API
  • employee_count_lowValue in the API
  • employee_count_highValue in the API
  • revenueValue in the API
  • descriptionValue in the API

Signal

  • signal_nameValue in the API
  • associationValue in the API
Show the full JSONThe record on this page and the API request

GET /v1/signals/65fe4cb7-5f88-5eee-bcdf-b205c4e6ad36 returns this record as JSON. POST /v1/companies/enrich returns every signal for cadence.com.

{
  "signal_id": "65fe4cb7-5f88-5eee-bcdf-b205c4e6ad36",
  "signal_type": "patents-company",
  "signal_subtype": "patentGrant",
  "detected_at": "2026-09-23T15:07:03+00:00",
  "company": {
    "name": "Cadence",
    "domain": "cadence.com"
  },
  "data": {
    "cpc": [
      {
        "code": "G06F 30/396",
        "label": "Electric digital data processing"
      },
      {
        "code": "G06F 30/347",
        "label": "Electric digital data processing"
      }
    ],
    "tags": [
      "Intellectual Property",
      "Research & Development",
      "Engineering",
      "Software"
    ],
    "detail": "In September 2026 Cadence patented chip-design software for improving clock distribution across integrated circuits by placing buffers along H-tree wiring.",
    "summary": "Cadence was granted a patent for balancing buffers in clock-tree layouts.",
    "event_at": "2026-09-22",
    "inventors": [
      {
        "name": "Yi-Xiao Ding",
        "status": "unresolved",
        "is_primary": true
      },
      {
        "name": "Zhuo Li",
        "status": "resolved",
        "is_primary": false,
        "linkedin_url": "https://www.linkedin.com/in/zhuoli"
      },
      {
        "name": "Charles Jay Alpert",
        "status": "unresolved",
        "is_primary": false
      }
    ],
    "tech_area": "software / computing",
    "event_kind": "grant_date",
    "grant_date": "2026-09-22",
    "source_url": "https://patents.google.com/patent/US12743573",
    "cpc_primary": {
      "code": "G06F 30/396",
      "label": "Electric digital data processing"
    },
    "patent_title": "Balancing buffer insertion for clock H-trees",
    "patent_number": "US12743573",
    "uspto_assignee": "Cadence Design Systems, Inc.",
    "patent_abstract": "Aspects of the present disclosure include system, methods, and software for creating an H-tree routing layout. In one example, a method includes an H-tree routing layout that has a plurality of vertical traces and horizontal traces connecting a clock source to a plurality of clock sinks. The method positions a plurality of candidate buffers in the H-tree routing layout. The method assigns a 4-dimensional (4D) vector to each candidate buffer of the plurality of candidate buffers, and derives one or more merge buffer combinations from the plurality of candidate buffers based on the assigned 4D vector of at least two candidate buffers of the plurality of candidate buffers. The method also applies a threshold vector to select one or more final candidate buffers from the merge buffer combinations.",
    "precision_class": "structural",
    "invention_explanation": "A method that scores possible buffer locations in a branching clock network and uses those scores to distribute timing support more evenly.",
    "technologies_mentioned": [
      "electronic design automation",
      "clock-tree synthesis",
      "integrated-circuit design",
      "buffer placement"
    ]
  }
}

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