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Converged 5250 and 3270 Emulation

IP.com Disclosure Number: IPCOM000122594D
Original Publication Date: 1991-Dec-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Covey, E: AUTHOR [+4]

Abstract

A converged 5250/3270 emulator is provided as follows: 1. Each emulator type has a component called a communication tower which provides a mechanism of passing emulator-specific data to and from the configured host systems. 2. The communication towers interface with a component called a router. The router coordinates the passing of data between logical terminal sessions of the different types and the communication towers. 3. Each logical terminal session has configuration information attached to it so the emulator type of each session is known. Given this configuration information, common software can conditionally operate on either a 5250 or 3270 data stream and generate output to a common EBCDIC screen format.

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Converged 5250 and 3270 Emulation

      A converged 5250/3270 emulator is provided as follows:
1.   Each emulator type has a component called a communication tower
which provides a mechanism of passing emulator-specific data to and
from the configured host systems.
2.   The communication towers interface with a component called a
router.  The router coordinates the passing of data between logical
terminal sessions of the different types and the communication
towers.
3.   Each logical terminal session has configuration information
attached to it so the emulator type of each session is known.  Given
this configuration information, common software can conditionally
operate on either a 5250 or 3270 data stream and generate output to a
common EBCDIC screen format.  Conversely, it can take data from the
common EBCDIC screen format and convert it to the correct data stream
type.

      This common EBCDIC screen format is the focal point for this
invention.  This structure enables all emulator processing to operate
almost independent of terminal type. Furthermore, because of this,
converged function will also be gained.  For instance, a common draw
or paint routine can exist that will operate on any terminal
session's EBCDIC screen data and display it on the programmable work
station. Furthermore, a common keystroke processing routine can exist
for all logical terminal sessions.  This routine can enhance both
emulator types by combining local functions of both t...