-
公开(公告)号：JPH1040100A
公开(公告)日：1998-02-13
申请号：JP7138897
申请日：1997-03-25
Applicant: IBM
Inventor： AUERBACH JOSHUA SETH , CHOW CHEE-SENG , KAPLAN MARC ADAM , CRIGLER JEFFREY CHARLES
IPC: G06F21/22 , G06F9/06 , G06F13/00 , G06F21/00 , G06Q10/00 , G06Q30/00 , G07F7/12 , G09C1/00 , H04L9/08 , H04L9/14 , H04L9/32 , G06F15/00 , G06F17/60
Abstract: PROBLEM TO BE SOLVED: To obtain a method for preparing, distributing, and vending a digital document, and a method for managing access to the digital document by providing a step for enciphering one of information parts by a part enciphering key, and preparing an enciphered part to be housed in an envelope. SOLUTION: A document part 203 can be enciphered. The enciphered document part 203 can be a 'valuable content' (for example, the chapter of a book, high resolution JPEG picture, or MPEG stream) to be purchased by a user. A non-enciphered part is a 'thesis' (for example, a book review by the others, index, summarization, or low resolution JPEG picture). The purpose of the non-enciphered part is to allow the user to attain the 'preview', 'sampling' or 'browse' of the content of the enciphered envelope before actually purchasing it.
-
公开(公告)号：DE69126640D1
公开(公告)日：1997-07-31
申请号：DE69126640
申请日：1991-03-21
Applicant: IBM
Inventor： BARZILAI TSIPORA PIRCHA , CHEN MON-SONG , KADABA BHARATH KUMAR , KAPLAN MARC ADAM
IPC: H04L12/56
Abstract: A method and apparatus for dynamically adjusting the window size in a session between a sender and a receiver over a link of a packet transmission network. This invention discloses a dynamic window adjustment scheme to determine the optimum window size with a minimum number of iterations. This invention also covers a method and apparatus for sharing pacing credits among a number of sessions during which packets are transmitted over the network. With this invention sessions having no packets to transmit will send pacing credits to a shared credit pool (SCP) while pacing credits will be distributed to those session having packets to transmit.
-
公开(公告)号：DE69333105T2
公开(公告)日：2004-06-03
申请号：DE69333105
申请日：1993-05-05
Applicant: IBM
Inventor： AUERBACH JOSHUA SETH , DRAKE JR , GOPAL PRABANDHAM MADAN , HERVATIC ELIZABETH ANNE , KAPLAN MARC ADAM , KUTTEN SHAY , PETERS MARCIA LAMBERT , WARD MICHAEL JAMES
Abstract: A multinode, multicast communications network has a distributed control for the creation, administration and operational mode selection operative in each of the nodes of the network. Each node is provided with a Set Manager for controlling either creation of, administration or access to a set of users to whom a multicast is to be directed. The Set Manager maintains a record of the local membership of all users associated with the node in which the Set Manager resides. A given Set Manager for each designated set of users is assigned the task of being the Set Leader to maintain membership information about the entire set of users in the multicast group. One of the Set Managers in the communications network is designated to be the Registrar which maintains a list of all the Set Leaders in the network. The Registrar insures that there is one and only one Set Leader for each set of users, answers inquiries about the membership of the sets and directs inquiries to appropriate Set Leaders if necessary. All of the set creation, administration and control functions can therefore be carried out by any node of the system and provision is made to assume the function at a new node when failure or partition in the network occurs.
-
公开(公告)号：CA2094410C
公开(公告)日：1998-05-05
申请号：CA2094410
申请日：1993-04-20
Applicant: IBM
Inventor： HERVATIC ELIZABETH ANNE , KAPLAN MARC ADAM , KUTTEN SHAY , WARD MICHAEL JAMES , PETERS MARCIA LAMBERT , GOPAL PRABANDHAM MADAN , DRAKE JOHN ELLIS JR , AUERBACH JOSHUA SETH
Abstract: A multinode, multicast communications network has a distributed control for the creation, administration and operational mode selection operative in each of the nodes of the network. Each node is provided with a Set Manager for controlling either creation of, administration or access to a set of users to whom a multicast is to be directed. The Set Manager maintains a record of the local membership of all users associated with the node in which the Set Manager resides. A given Set Manager for each designated set of users is assigned the task of being the Set Leader to maintain membership information about the entire set of users in the multicast group. One of the Set Managers in the communications network is designated to be the Registrar which maintains a list of all the Set Leaders in the network. The Registrar insures that there is one and only one Set Leader for each set of users, answers inquiries about the membership of the sets and directs inquiries to appropriate Set Leaders if necessary. All of the set creation, administration and control functions can therefore be carried out by any node of the system and provision is made to assume the function at a new node when failure or partition in the network occurs.
-
公开(公告)号：FR2717973B1
公开(公告)日：1997-01-03
申请号：FR9501602
申请日：1995-02-07
Applicant: IBM
-
Patent Agency Ranking
公开(公告)号：AU3839093A
公开(公告)日：1993-12-23
申请号：AU3839093
申请日：1993-05-06
Applicant: IBM
Inventor： AUERBACH JOSHUA SETH , DRAKE JOHN ELLIS JR , GOPAL PRABANDHAM MADAN , HERVATIC ELIZABETH ANNE , KAPLAN MARC ADAM , KUTTEN SHAY , PETERS MARCIA LAMBERT , WARD MICHAEL JAMES
Abstract: A multinode, multicast communications network has a distributed control for the creation, administration and operational mode selection operative in each of the nodes of the network. Each node is provided with a Set Manager for controlling either creation of, administration or access to a set of users to whom a multicast is to be directed. The Set Manager maintains a record of the local membership of all users associated with the node in which the Set Manager resides. A given Set Manager for each designated set of users is assigned the task of being the Set Leader to maintain membership information about the entire set of users in the multicast group. One of the Set Managers in the communications network is designated to be the Registrar which maintains a list of all the Set Leaders in the network. The Registrar insures that there is one and only one Set Leader for each set of users, answers inquiries about the membership of the sets and directs inquiries to appropriate Set Leaders if necessary. All of the set creation, administration and control functions can therefore be carried out by any node of the system and provision is made to assume the function at a new node when failure or partition in the network occurs.
-
公开(公告)号：DE69331310T2
公开(公告)日：2002-08-22
申请号：DE69331310
申请日：1993-06-03
Applicant: IBM
-
公开(公告)号：DE69331310D1
公开(公告)日：2002-01-24
申请号：DE69331310
申请日：1993-06-03
Applicant: IBM
-
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
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.
-
公开(公告)号：CA2094409C
公开(公告)日：1998-07-14
申请号：CA2094409
申请日：1993-04-20
Applicant: IBM
Inventor： AUERBACH JOSHUA SETH , CHOW CHEE-SENG , DRAKE JOHN ELLIS JR , GOPAL PRABANDHAM MADAN , HERVATIC ELIZABETH ANNE , KAPLAN MARC ADAM , PETERS MARCIA LAMBERT , WARD MICHAEL JAMES
Abstract: In a multicast network communication system, administration of the communication path making up the multicast tree itself has been separated from control and administration of the network. Creation of a multicast distribution tree and control over the membership thereof, is separately controlled independently from the creation and use of the tree transmission path used to communicate among the members of a multicast set. Transmission distribution trees are set up when a transmission request is received and the properties of the transmission path that is required are known. Transmission paths are created and controlled by all nodes in the communications system, each node having necessary control code and processors for responding to requests from set members to transmit a message to groups of users by creating and activating the necessary tree communication path distribution linkages. A distribution tree is created by the Tree Leader by generating a tree address using a random number generator. A tree address correlator is generated utilizing network and node identifiers unique for the network, and a list of subnodes or users connected for each member of the multicast tree set is generated. Using this information, a tree distribution path is computed to cover all of the subnodes required and a tree set up request message is sent by the Tree Leader along a computed path to each involved subnode. Each subnode returns a message indicating whether the tree address is already in use or is available for use. Successfully negotiated tree addresses are marked at the path link initiation and termination points at each node through the network.
-
-
-
-
-
-
-
-
-
Search Results
29
records
(took 0.018 seconds)
