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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
G06F 13/368

with decentralised access control

Introduced: January 1990

Full Title

Full titles differ between systems:

IPC:

Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units > Handling requests for interconnection or transfer > for access to common bus or bus system > with decentralised access control

CPC:

Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units (interface circuits for specific input/output devices G06F3/00 ; multiprocessor systems G06F15/16 ) > Handling requests for interconnection or transfer > for access to common bus or bus system > with decentralised access control

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

IPC defines codes here since 1990.

Child Classifications

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  • G06F 13/37 using a physical-position-dependent priority, e.g. daisy chain, round robin or token passing since 1990 IPC+CPC Available in IPC and CPC
  • G06F 13/372 using a time-dependent priority, e.g. individually loaded time counters or time slot since 1990 IPC+CPC Available in IPC and CPC
  • G06F 13/374 using a self-select method with individual priority code comparator since 1990 IPC+CPC Available in IPC and CPC
  • G06F 13/376 using a contention resolving method, e.g. collision detection, collision avoidance since 1990 IPC+CPC Available in IPC and CPC
  • G06F 13/378 using a parallel poll method since 1990 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class G06,2013–2023, worldwide · Source: EPO PATSTAT

  1. SAMSUNG ELECTRONICS COMPANY KR 66,669
  2. IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 62,313
  3. MICROSOFT TECHNOLOGY LICENSING US 41,918
  4. GOOGLE US 32,969
  5. SGCC(STATE GRID CORPORATION OF CHINA) 30,822
  6. INTEL CORPORATION US 30,010
  7. TENCENT TECHNOLOGY (SHENZHEN) COMPANY 28,235
  8. HUAWEI TECHNOLOGIES COMPANY CN 26,079
  9. APPLE US 21,891
  10. HUAWEI TECHNOLOGIES COMPANY 20,505

Top Applicants (CPC)

Class G06,2013–2023, worldwide · Source: EPO PATSTAT

  1. SAMSUNG ELECTRONICS COMPANY KR 76,952
  2. IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 62,841
  3. MICROSOFT TECHNOLOGY LICENSING US 44,778
  4. GOOGLE US 35,735
  5. INTEL CORPORATION US 32,087
  6. HUAWEI TECHNOLOGIES COMPANY CN 30,572
  7. TENCENT TECHNOLOGY (SHENZHEN) COMPANY 25,023
  8. APPLE US 23,482
  9. SGCC(STATE GRID CORPORATION OF CHINA) 22,548
  10. HUAWEI TECHNOLOGIES COMPANY 20,917