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公开(公告)号：JPH10320322A
公开(公告)日：1998-12-04
申请号：JP10884198
申请日：1998-04-20
Applicant: IBM
Abstract: PROBLEM TO BE SOLVED: To utilize a terminal emulator application, etc., in a slow communication environment of radio communication, etc., by converting a terminal emulator protocol data stream into a specific fragmentation communication protocol data stream to send and reconfigurating a data stream from a received data stream. SOLUTION: A terminal emulator application 36 of a computer 20 and a host application 42 of a computer 30 uses a terminal emulator protocol on an external communication link and perform communication. Here, a protocol interceptor 46 on a host side intercepts a terminal emulator protocol data stream that is outputted by the application 43 before communication, converts it into a fragmentation communication protocol data stream and sends it onto the external communication link 34. A protocol interceptor 40 on the terminal emulator application side reconstructs the original terminal emulator protocol data stream from a received data stream.
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公开(公告)号：DE69821050D1
公开(公告)日：2004-02-19
申请号：DE69821050
申请日：1998-04-27
Applicant: IBM
Inventor： HOUSEL III , LINDQUIST DAVID BRUCE , WESLEY AJAMU AKINWUMI
Abstract: Method and apparatus for increasing the performance of communications of a terminal emulator application resident on a first computer and communicating over an external communication link using a terminal emulator protocol with a host application resident on a second computer remote from the first computer are provided. A protocol interceptor is provided on both the host side and the terminal emulator application side of the external communication link to provide communications over the external communication link using a differenced communication protocol data stream which includes a reduced volume of data for transmittal compared to the corresponding terminal emulator protocol data stream. The reduction in volume in the differenced communication protocol data stream is based on recognition and replacement of data segments which have previously been transmitted by the host application. The terminal emulator protocol data stream from the host application is intercepted and converted to the differenced communication protocol data stream before transmission. The differenced communication protocol data stream is received at the terminal emulator application computer and reconstructed into a terminal emulator protocol data stream which is provided to the terminal emulator application. The continuous terminal emulator protocol data stream may be segmented and calculating an identifier for each segment calculated. If the segment corresponds to a segment saved on a cache present on the receiving computer, the segment is replaced with the identifier for transmission over the external communication line. The saved segment from the cache one the receiving computer is inserted in the data stream in place of the identifier.
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公开(公告)号：DE69821050T2
公开(公告)日：2004-11-25
申请号：DE69821050
申请日：1998-04-27
Applicant: IBM
Inventor： HOUSEL III , LINDQUIST DAVID BRUCE , WESLEY AJAMU AKINWUMI
Abstract: Method and apparatus for increasing the performance of communications of a terminal emulator application resident on a first computer and communicating over an external communication link using a terminal emulator protocol with a host application resident on a second computer remote from the first computer are provided. A protocol interceptor is provided on both the host side and the terminal emulator application side of the external communication link to provide communications over the external communication link using a differenced communication protocol data stream which includes a reduced volume of data for transmittal compared to the corresponding terminal emulator protocol data stream. The reduction in volume in the differenced communication protocol data stream is based on recognition and replacement of data segments which have previously been transmitted by the host application. The terminal emulator protocol data stream from the host application is intercepted and converted to the differenced communication protocol data stream before transmission. The differenced communication protocol data stream is received at the terminal emulator application computer and reconstructed into a terminal emulator protocol data stream which is provided to the terminal emulator application. The continuous terminal emulator protocol data stream may be segmented and calculating an identifier for each segment calculated. If the segment corresponds to a segment saved on a cache present on the receiving computer, the segment is replaced with the identifier for transmission over the external communication line. The saved segment from the cache one the receiving computer is inserted in the data stream in place of the identifier.
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