公开(公告)号：JPH11261600A

公开(公告)日：1999-09-24

申请号：JP34375098

申请日：1998-12-03

Applicant: IBM

Inventor： BRANSTAD MARK W ,  BYRN JONATHAN W ,  DELP GARY S ,  LEICHTY PHILIP L ,  LYNCH JEFFREY JAMES ,  PLOTZ KEVIN G ,  SENDELBACH LEE A ,  SLANE ALBERT ALFONSE

IPC: H04N7/26 ,  G06F17/30 ,  G06F19/00 ,  H04J3/06 ,  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 ,  H04L12/28

Abstract: PROBLEM TO BE SOLVED: To provide a method and a device for transmitting a stream of digital multimedia data on a distribution communications network. SOLUTION: A server is provided for segmenting a stream into data blocks on first and second boundaries. The first boundary indicates the number of sets of transport system packets, and the second boundary denotes the transport system packet including a time stamp. A scheduler schedules the blocks segmented for transmission. The server decodes the segmented blocks, finds out the time stamp and makes the transmission of data blocks coincident with the time value of the time stamp. The number of sets of transport system packets can be determined at the time of connection setting and does not become a prescribed value concerning all sessions.

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.

公开(公告)号：DE69636029T2

公开(公告)日：2006-10-05

申请号：DE69636029

申请日：1996-06-26

Applicant: IBM

Inventor： DELP GARY S ,  LEICHTY PHILIP L ,  SLANE ALBERT A

IPC: G06F13/00 ,  G06F13/12 ,  H04L12/56 ,  H04L29/06 ,  H04L29/08

Abstract: A method and system within a data processing system are disclosed for receiving information from a communications network. The data processing system includes a communications adapter, having an adapter memory, and a host memory. The communications adapter is coupled to the communications network, which transmits information to the data processing system in packets including a packet header and packet data. According to the present invention, a portion of a packet of information is received from the communications network at the adapter memory within the communications adapter. The portion of the packet of information includes at least a packet header that specifies a length of the packet of information and a destination address within the host memory. In response to receipt of the portion of the packet of information, a transfer of the packet of information from the adapter memory to the host memory is prepared prior to receipt of a final portion of the packet of information at the adapter memory. The packet of information is then transferred from the adapter memory to addresses within the host memory beginning with the destination address. Since the transfer is prepared before packet receipt is complete, perceived latency is minimized.

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.

公开(公告)号：DE69636029D1

公开(公告)日：2006-05-24

申请号：DE69636029

申请日：1996-06-26

Applicant: IBM

Inventor： DELP GARY S ,  LEICHTY PHILIP L ,  SLANE ALBERT A

IPC: G06F13/00 ,  G06F13/12 ,  H04L12/56 ,  H04L29/06 ,  H04L29/08

Abstract: A method and system within a data processing system are disclosed for receiving information from a communications network. The data processing system includes a communications adapter, having an adapter memory, and a host memory. The communications adapter is coupled to the communications network, which transmits information to the data processing system in packets including a packet header and packet data. According to the present invention, a portion of a packet of information is received from the communications network at the adapter memory within the communications adapter. The portion of the packet of information includes at least a packet header that specifies a length of the packet of information and a destination address within the host memory. In response to receipt of the portion of the packet of information, a transfer of the packet of information from the adapter memory to the host memory is prepared prior to receipt of a final portion of the packet of information at the adapter memory. The packet of information is then transferred from the adapter memory to addresses within the host memory beginning with the destination address. Since the transfer is prepared before packet receipt is complete, perceived latency is minimized.