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특허 상세정보

MyON담기
내보내기 페이스북 공유 카카오톡 공유

Collision detection technique for an optical passive star local area network using CSMA/CD

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H04J-003/02    G06F-011/00   
미국특허분류(USC) 370/85 ; 370/94 ; 340/8255 ; 371/57
출원번호 US-0888699 (1986-07-24)
발명자 / 주소
  • Kavehrad Mohsen (Holmdel NJ) Sundberg Carl-Erik (Hazlet NJ)
출원인 / 주소
  • American Telephone and Telegraph Company, AT&T Bell Laboratories (Murray Hill NJ 02)
인용정보 피인용 횟수 : 43  인용 특허 : 4
초록
▼

The present invention relates to a collision detection technique for an optical Star LAN using CSMA/CD. The present technique is implemented by preferably adding two or more fixed Hamming weight sequences, e.g., a fixed even or odd number of 1\s in each unique cyclic error correcting code word, to the preamble section of each packet of information to be transmitted. These collision detection sequences have a length which is beyond the vulnerable time period of the CSMA/CD protocol (maximum round-trip propagation delay for each packet) by at least one cod...

대표
청구항
▼

A collision detection arrangement for use in a receiver of a Carrier Sense Multiple Access Collision Detection (CSMA/CD) communication network transceiver, the arrangement comprising: an input terminal for receiving a signal from the network including a packet of information which was originally transmitted comprising a preamble section including a collision detection sequence of length N bit intervals and a predetermined Hamming weight, where each transceiver of the network is assigned a separate collision detection sequence; means responsive to a colli...

인용문헌 (4)

  1. Galin Robert (Saratoga CA), Collision detection method using CRC code.
  2. Gammage Neil D. (Kanata CAX) Pachl Jan K. (Ottawa CAX) Casey Liam M. (Ottawa CAX), Control mechanism for a ring communication system.
  3. Stifle John E. (Urbana IL) Lee Donald A. (Urbana IL) Bitzer Donald L. (Urbana IL), Multiple access communication on a CATV reverse channel.
  4. Usui Takeshi (Tokyo JPX), Optical receiver having collision detection function.

이 특허를 인용한 특허 (43)

  1. Irvine-Halliday David (19 Hawkley Valley Place ; N.W. Calgary CAX T3G 3C7) Fapojuwo Abraham O. (817 Harris Place N.W. Calgary ; Alberta CAX T3B 2V4) Chan Wah-Chun (6235 Dalmarnock Green ; N.W. Calgar, Active star-configured local area network.
  2. Kevin Ross, Arbitration scheme for a serial interface.
  3. Dreyer Stephen F. ; West Eric T. ; Alderrou Donald W., Automatic MAC control frame generating apparatus for LAN flow control.
  4. Fischer, Larry G.; Russell, David S.; Wala, Philip M.; Ratliff, Charles R.; Brennan, Jeffrey O., Cellular communications system with sectorization.
  5. Fischer, Larry G.; Russell, David S.; Wala, Philip M.; Ratliff, Charles R; Brennan, Jeffrey O., Cellular communications system with sectorization.
  6. Fischer,Larry G.; Russell,David S.; Wala,Philip M.; Ratliff,Charles R.; Brennan,Jeffrey O., Cellular communications system with sectorization.
  7. Chien-Meen Hwang ; Hungming Chang ; Maged F. Barsoum ; Muoi V. Huynh ; Eugen Gershon ; Fred Berkowitz, Collision handling scheme for discrete multi-tone data communications network.
  8. Aggers John R. (Apple Valley MN) Roth Roger R. (Minnetonka MN), Detector for colliding signals in asynchronous communication.
  9. Donohue, John E., Digital return path for hybrid fiber/coax network.
  10. Gallagher,Robert T., Digital return path for hybrid fiber/coax network.
  11. Bauman, Donald R.; Wala, Philip M.; Brennan, Jeffrey O., Distributed digital antenna system.
  12. Koziy, Robert J.; Roberts, Harold A.; Schieffert, Todd, Distributed remote base station system.
  13. Courtois Pierre-Jacques F. (Rhode BEX) Scheys Guy F. J. (Brussels BEX) Semal Pierre-Nicolaas W. (Lasnes BEX), Dynamic sensing point CSMA packet switching controller.
  14. Debendra Das Sharma, ECC code mechanism to detect wire stuck-at faults.
  15. Sharma, Debendra Das, ECC code mechanism to detect wire stuck-at faults.
  16. Unitt,Brian; Grant,Michael; Farrington,Jeffrey; Phillips,David, High capacity passive optical network.
  17. Hamaguchi Kazumasa (Yokohama JPX) Date Atsushi (Tokyo JPX) Kosugi Masato (Yokohama JPX) Fukui Toshiyuki (Kawasaki JPX), Information processing apparatus for multiplex transmission of signal for arbitration and signal for data transfer.
  18. Simske, Steven J., Mass serialization analytics.
  19. Aggers John R. (Apple Valley MN) Roth Roger R. (Minnetonka MN), Message generating communication apparatus having a message preamble format allowing parts of certain messages to be ign.
  20. Helbers Jan (Rochester NY) Scholl Frederick W. (Riverdale NY) Coden Michael H. (Bronx NY), Method and apparatus for detecting the collision of data packets.
  21. Hatfield Walter B. (Fair Haven NJ) Tobol Nathan (Wrentham MA) Scholl Frederick W. (Riverdale NY), Method and apparatus for detecting the collision of data packets utilizing a preassigned transceiver code in the preambl.
  22. Yang, Xueshi; Burd, Gregory, Method and apparatus for processing nuisance data.
  23. Thomas Edward Darcie ; Bhavesh Desai ; Alan H. Gnauck ; Xiaolin Lu ; Sheryl Leigh Woodward, Method and system for providing low-cost high-speed data services.
  24. Sutterlin, Philip H.; Riley, Glen M.; Downey, Walter J., Method and system of enhancing signal processing in a shared medium network.
  25. Sutterlin, Philip H.; Riley, Glen M.; Downey, Walter J., Method and system of enhancing signal processing in a shared medium network.
  26. Sutterlin, Philip H.; Riley, Glen M.; Downey, Walter J., Method and system of enhancing signal processing in a shared medium network.
  27. Wala, Philip M.; Zavadsky, Dean, Method of inserting CDMA beacon pilots in output of distributed remote antenna nodes.
  28. Barth Richard Maurice ; Griffin Matthew Murdy ; Ware Frederick Abbott ; Horowitz Mark Alan, Method of transferring data by transmitting lower order and upper odermemory address bits in separate words with respec.
  29. Barth,Richard M.; Griffin,Matthew M.; Ware,Frederick A.; Horowitz,Mark A., Method of transferring data by transmitting lower order and upper order memory address bits in separate words with respective op codes and start information.
  30. Wala, Philip M.; Koziy, Robert J.; Zavadsky, Dean, Modular wireless communications platform.
  31. Wala, Philip M.; Koziy, Robert J.; Zavadsky, Dean, Modular wireless communications platform.
  32. Wala, Philip M.; Koziy, Robert J.; Zavadsky, Dean, Modular wireless communications platform.
  33. Roberts Kim Byron,GBX ; O'Sullivan Maurice M,CAX ; Robinson Alan,GBX ; Epworth Richard Edward,GBX, Multiplexed transmission of optical signals.
  34. Unitt, Brian; Grant, Michael, Non-return optical star coupler.
  35. Yuki, Hayato; Uchino, Takeo, On-vehicle communication system, optical communication harness and optical distribution apparatus.
  36. Levinson, Frank H., Parallel transmission of data streams in a star-configured network.
  37. Soto, Alexander I.; Soto, Walter G., System and method for optical layer management in optical modules and remote control of optical modules.
  38. Soto, Alexander I; Soto, Walter G, System and method for pluggable optical modules for passive optical networks.
  39. Hermel, Michael J.; Fischer, Larry G.; Mitchell, William J., Systems and methods for analog transport of RF voice/data communications.
  40. Valeri Marco (Rome ITX) Rocchini Carlo A. (Rome ITX), Terminal access protocol circuit for optical fiber star network.
  41. Arai, Koji; Nakagawa, Gen, Transmission path interface apparatus.
  42. Krishnakumar Anjur Sundaresan,NLX ; Sobrinho Joao Luis,PTX, Variable contention transmission media access based on idle waiting time.
  43. Ogiso,Takayuki; Fukuda,Kunio, Wireless communication system.

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