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9 records (took 0.017 seconds)

    1.
    发明专利
    未知

    公开(公告)号：DE2701500A1

    公开(公告)日：1977-09-15

    申请号：DE2701500

    申请日：1977-01-15

    Applicant: IBM

    Inventor： DAVENPORT DAVID WILLIAM

    IPC: H03K5/00 ,  G06F7/68 ,  H03K5/156

    Abstract: This invention discloses a structure whereby a fixed frequency machine clocking signal can be multiplied in frequency by any desired integral value. The device uses a tapped delay line having a total time delay slightly less than the time of one-half cycle of the clocking signal and an exclusive-OR tree connected to the taps of the delay line to generate a higher frequency output clock signal. By interposing a known frequency division network to the input of the delay line, the output clock signal can be generated with any desired rational relationship to the driving clocking signal.

    3.
    发明专利
    未知

    公开(公告)号：DE69325957T2

    公开(公告)日：2000-03-30

    申请号：DE69325957

    申请日：1993-05-19

    Applicant: IBM

    Inventor： CIDON ISRAEL ,  DAVENPORT DAVID WILLIAM ,  DERBY JEFFREY HASKELL ,  DUDLEY JOHN GARY ,  GOPAL INDER SARAT ,  JANNIELLO JAMES PATRICK ,  KAPLAN MARC ADAM ,  KOPERDA FRANK RICHARD ,  POTTER KENNETH HARVEY ,  KUTTEN SHAY

    IPC: H04L12/18 ,  H04L12/56

    Abstract: A packet communications system provides for point-to-point packet routing and broadcast packet routing to limited subsets of nodes in the network, using a routing field in the packet header which is processed according to two different protocols. A third protocol is provided in which a packet can be broadcast to the limited subset even when launched from a node which is not a member of the subset. The routing field includes a first portion which contains the route labels necessary to deliver the packet to the broadcast subset. A second portion of the routing field contains the broadcast subset identifier which can then be used to deliver the packet to all of the members of the broadcast subset. Provision is made to backtrack deliver the packet to the last node identified before the broadcast subset if that last node is itself a member of the subset.

    4.
    发明专利
    未知

    公开(公告)号：ES2136118T3

    公开(公告)日：1999-11-16

    申请号：ES93480059

    申请日：1993-05-19

    Applicant: IBM

    Inventor： CIDON ISRAEL ,  DAVENPORT DAVID WILLIAM ,  DERBY JEFFREY HASKELL ,  DUDLEY JOHN GARY ,  GOPAL INDER SARAT ,  JANNIELLO JAMES PATRICK

    IPC: H04L12/18 ,  H04L12/56

    Abstract: A packet communications system provides for point-to-point packet routing and broadcast packet routing to limited subsets of nodes in the network, using a routing field in the packet header which is processed according to two different protocols. A third protocol is provided in which a packet can be broadcast to the limited subset even when launched from a node which is not a member of the subset. The routing field includes a first portion which contains the route labels necessary to deliver the packet to the broadcast subset. A second portion of the routing field contains the broadcast subset identifier which can then be used to deliver the packet to all of the members of the broadcast subset. Provision is made to backtrack deliver the packet to the last node identified before the broadcast subset if that last node is itself a member of the subset.

    6.
    发明专利
    未知

    公开(公告)号：DE69325957D1

    公开(公告)日：1999-09-16

    申请号：DE69325957

    申请日：1993-05-19

    Applicant: IBM

    Inventor： CIDON ISRAEL ,  DAVENPORT DAVID WILLIAM ,  DERBY JEFFREY HASKELL ,  DUDLEY JOHN GARY ,  GOPAL INDER SARAT ,  JANNIELLO JAMES PATRICK ,  KAPLAN MARC ADAM ,  KOPERDA FRANK RICHARD ,  POTTER KENNETH HARVEY ,  KUTTEN SHAY

    IPC: H04L12/18 ,  H04L12/56

    Abstract: A packet communications system provides for point-to-point packet routing and broadcast packet routing to limited subsets of nodes in the network, using a routing field in the packet header which is processed according to two different protocols. A third protocol is provided in which a packet can be broadcast to the limited subset even when launched from a node which is not a member of the subset. The routing field includes a first portion which contains the route labels necessary to deliver the packet to the broadcast subset. A second portion of the routing field contains the broadcast subset identifier which can then be used to deliver the packet to all of the members of the broadcast subset. Provision is made to backtrack deliver the packet to the last node identified before the broadcast subset if that last node is itself a member of the subset.

    7.
    发明专利
    未知

    公开(公告)号：AT183349T

    公开(公告)日：1999-08-15

    申请号：AT93480059

    申请日：1993-05-19

    Applicant: IBM

    Inventor： CIDON ISRAEL ,  DAVENPORT DAVID WILLIAM ,  DERBY JEFFREY HASKELL ,  DUDLEY JOHN GARY ,  GOPAL INDER SARAT ,  JANNIELLO JAMES PATRICK ,  KAPLAN MARC ADAM ,  KOPERDA FRANK RICHARD ,  POTTER KENNETH HARVEY JR ,  KUTTEN SHAY

    IPC: H04L12/18 ,  H04L12/56

    Abstract: A packet communications system provides for point-to-point packet routing and broadcast packet routing to limited subsets of nodes in the network, using a routing field in the packet header which is processed according to two different protocols. A third protocol is provided in which a packet can be broadcast to the limited subset even when launched from a node which is not a member of the subset. The routing field includes a first portion which contains the route labels necessary to deliver the packet to the broadcast subset. A second portion of the routing field contains the broadcast subset identifier which can then be used to deliver the packet to all of the members of the broadcast subset. Provision is made to backtrack deliver the packet to the last node identified before the broadcast subset if that last node is itself a member of the subset.

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