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公开(公告)号：CA2093452C
公开(公告)日：1998-04-28
申请号：CA2093452
申请日：1993-04-06
Applicant: IBM
Inventor： SNYDER RAMON E , DUAULT MAURICE , LYNCH JEFFREY J
Abstract: A method and an apparatus allows multiple users to share one or more data communication lines without requiring the users to actively participate in the arbitration. The preferred embodiment comprises an ISDN Port Connection Manager (PCM) for managing the use of each of the individual channels of one or more line ports having ISDN service thereon. The ISDN PCM manages the use of the channels between applications using such distinct access methods as the IBM Virtual Telecommunications Access Method (VTAM), TCP/IP, and Open Systems Interconnect (OSI) access methods. The ISDN PCM determines that an application needs access to an ISDN channel, determines the availability of the ISDN network and sets up the communication between the application and the network if the channel is available. If no channel is available at that time, the ISDN PCM indicates to the application when the channel becomes available so that the application may determine whether it still needs access.
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公开(公告)号：DE69535402T2
公开(公告)日：2007-11-29
申请号：DE69535402
申请日：1995-12-20
Applicant: IBM
Inventor： BRANSTAD MARK W , DELP GARY S , LYNCH JEFFREY J , BYRN JONATHAN W , LEICHTY PHILIP L , PLOTZ KEVIN G , SENDELBACH LEE A , SLANE ALBERT A
IPC: H04J3/06 , H04N7/26 , G06F17/30 , G06F19/00 , H04L12/56 , H04L29/06 , H04L29/08 , H04N7/24 , H04N7/52 , H04N21/2343 , H04N21/2368 , H04N21/2381 , H04N21/242 , H04N21/2543 , H04N21/262 , H04N21/43 , H04N21/434 , H04N21/4363 , H04N21/438 , H04N21/472 , H04N21/643 , H04N21/845 , H04N21/8547 , H04Q3/00 , H04Q11/04
Abstract: Method and apparatus are provided for transmitting a stream of multimedia digital data over a distribution communications network. A multimedia stream server segments the multimedia digital data stream into data blocks on a first boundary and a second boundary. The first boundary is a set number of transport system data packets and the second boundary is a transport system data packet including a timestamp. A scheduler schedules the segmented data blocks for transmission. The multimedia stream server decodes the segmented data blocks to locate the timestamps and matches the transmission of the located timestamp data block with a time value indicated by the timestamp. The set number of transport system data packets can be determined at connection setup and is not a predetermined value for all sessions. At the receiver, batch processing of received multimedia data can be provided.
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公开(公告)号：CA2093452A1
公开(公告)日：1993-10-11
申请号：CA2093452
申请日：1993-04-06
Applicant: IBM
Inventor： DUAULT MAURICE , LYNCH JEFFREY J , SNYDER RAMON E
Abstract: A method and an apparatus allows multiple users to share one or more data communication lines without requiring the users to actively participate in the arbitration. The preferred embodiment comprises an ISDN Port Connection Manager (PCM) for managing the use of each of the individual channels of one or more line ports having ISDN service thereon. The ISDN PCM manages the use of the channels between applications using such distinct access methods as IBM's Virtual Telecommunications Access Method (VTAM), TCP/IP, and Open Systems Interconnect (OSI) access methods. The ISDN PCM determines that an application needs access to an ISDN channel, determines the availability of the ISDN network and sets up the communication between the application and the network if the channel is available. If no channel is available at that time, the ISDN PCM indicates to the application when the channel becomes available so that the application may determine whether it still needs access.
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公开(公告)号：DE69535402D1
公开(公告)日：2007-04-12
申请号：DE69535402
申请日：1995-12-20
Applicant: IBM
Inventor： BRANSTAD MARK W , DELP GARY S , LYNCH JEFFREY J , BYRN JONATHAN W , LEICHTY PHILIP L , PLOTZ KEVIN G , SENDELBACH LEE A , SLANE ALBERT A
IPC: H04J3/06 , H04N7/26 , G06F17/30 , G06F19/00 , H04L12/56 , H04L29/06 , H04L29/08 , H04N7/24 , H04N7/52 , H04N21/2343 , H04N21/2368 , H04N21/2381 , H04N21/242 , H04N21/2543 , H04N21/262 , H04N21/43 , H04N21/434 , H04N21/4363 , H04N21/438 , H04N21/472 , H04N21/643 , H04N21/845 , H04N21/8547 , H04Q3/00 , H04Q11/04
Abstract: Method and apparatus are provided for transmitting a stream of multimedia digital data over a distribution communications network. A multimedia stream server segments the multimedia digital data stream into data blocks on a first boundary and a second boundary. The first boundary is a set number of transport system data packets and the second boundary is a transport system data packet including a timestamp. A scheduler schedules the segmented data blocks for transmission. The multimedia stream server decodes the segmented data blocks to locate the timestamps and matches the transmission of the located timestamp data block with a time value indicated by the timestamp. The set number of transport system data packets can be determined at connection setup and is not a predetermined value for all sessions. At the receiver, batch processing of received multimedia data can be provided.
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