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Access control method for DQDB network

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04J-003/02
출원번호 US-0494636 (1990-03-09)
발명자 / 주소
  • Golding Neville L. (Mebane NC)
출원인 / 주소
  • International Business Machines Corporation (Armonk NY 02)
인용정보 피인용 횟수 : 35  인용 특허 : 0

초록

A distributed queue dual bus (DQDB) network has two, oppositely-directed, unidirectional busses. A node with data to send on one bus, can request access to that bus, by sending a bus request signal to all nodes upstream on the bus. The bus request signal is sent to the nodes as part of the traffic f

대표청구항

For use in a distributed queue dual bus network having two unidirectional oppositely directed busses along which information is transmitted in successive multi-byte cells, each cell having at least one busy bit and at least one bus request bit, and a plurality of parallel nodes, each of said nodes b

이 특허를 인용한 특허 (35)

  1. Farley, Kevin L.; Proctor, James A., Alternate channel for carrying selected message types.
  2. Farley, Kevin L.; Proctor, Jr., James A., Alternate channel for carrying selected message types.
  3. Proctor, Jr., James A., Antenna control system and method.
  4. Proctor, Jr., James A., Antenna control system and method.
  5. Proctor, Jr., James A., Antenna control system and method.
  6. Proctor, Jr., James A., Antenna control system and method.
  7. Proctor, Jr., James A., Antenna control system and method.
  8. Koperda Francis Richard, Cable data network architecture.
  9. McFarland Harold L. (San Jose CA) Ho Allen P. (Fremont CA), Crossing transfers for maximizing the effective bandwidth in a dual-bus architecture.
  10. Kerns Daniel J. ; Elliott Paul M. ; Nattkemper Dieter H., Distributed telecommunications switching system and method.
  11. Proctor, Jr., James A.; Foore, Lawrence R.; Gorsuch, Thomas E.; Amalfitano, Carlo, Dynamic bandwidth allocation for multiple access communications using buffer urgency factor.
  12. Gorsuch, Thomas E.; Amalfitiano, Carlo, Dynamic bandwidth allocation to transmit a wireless protocol across a code division multiple access (CDMA) radio link.
  13. Marshall, John William; Potter, Kenneth H., Group and virtual locking mechanism for inter processor synchronization.
  14. Marshall, John William; Potter, Kenneth H., Group and virtual locking mechanism for inter processor synchronization.
  15. McTague Michael J. ; Congdon Bradford B., Method and apparatus for reducing bus bridge thrashing by temporarily masking agent requests to allow conflicting reque.
  16. McTague Michael J. ; Congdon Bradford B., Method and apparatus for reducing bus bridge thrashing by temporarily masking agent requests to allow conflicting requests to be completed.
  17. David Howard S. ; McTague Michael J., Method and apparatus for sequencing system bus grants and disabling a posting buffer in a bus bridge to improve bus efficiency.
  18. Proctor, Jr., James A., Methods, apparatuses and systems for selective transmission of traffic data using orthogonal sequences.
  19. Nelson, Jr., G. Rodney; Hoffmann, John E.; Rouphael, Antoine J.; Proctor, Jr., James A., Minimal maintenance link to support sychronization.
  20. Nelson, Jr., G. Rodney; Hoffmann, John E.; Rouphael, Antoine J.; Proctor, James A., Minimal maintenance link to support synchronization.
  21. Nelson, Jr., G. Rodney; Hoffmann, John E.; Rouphael, Antoine J.; Proctor, James A., Minimal maintenance link to support synchronization.
  22. Nelson, Jr., G. Rodney; Hoffmann, John E.; Rouphael, Antoine J.; Proctor, Jr., James A., Minimal maintenance link to support synchronization.
  23. Proctor, Jr., James A., Multi-detection of heartbeat to reduce error probability.
  24. Proctor, Jr., James A., Multi-detection of heartbeat to reduce error probability.
  25. Proctor, Jr.,James A., Multi-detection of heartbeat to reduce error probability.
  26. Scott Nellenbach ; Kenneth Michael Key ; Edward D. Paradise ; Kenneth H. Potter, Jr., Pooled receive and transmit queues to access a shared bus in a multi-port switch asic.
  27. Proctor, Jr., James A., Signaling for wireless communications.
  28. Proctor, Jr., James A., Signaling for wireless communications.
  29. Peter L. Basel, System and method for arbitrating bandwidth on segmented network topologies.
  30. Proctor, Jr., James A., System and method for maintaining timing of synchronization messages over a reverse link of a CDMA wireless communication system.
  31. Proctor, Jr., James A., System and method for maintaining wireless channels over a reverse link of a CDMA wireless communication system.
  32. Proctor, Jr., James A., System and method for maintaining wireless channels over a reverse link of a CDMA wireless communication system.
  33. Proctor, Jr., James A., System and method for maintaining wireless channels over a reverse link of a CDMA wireless communication system.
  34. Proctor, Jr., James A., Transmittal of heartbeat signal at a lower level than heartbeat request.
  35. Proctor, Jr., James A., Use of correlation combination to achieve channel detection.
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