Browse Prior Art Database

Mapping Method using Tables between Two Display Data Streams

IP.com Disclosure Number: IPCOM000115568D
Original Publication Date: 1995-Jan-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 80K

Publishing Venue

IBM

Related People

Takatsu, N: AUTHOR [+2]

Abstract

Disclosed is a method to map two display data streams with different "field" definition, by using tables. One data stream defines a "field" as a series of screen positions (one-dimensional), such as Field B in Fig. 1. IBM* 3270 data stream is an example of such a data stream. In the data stream, a screen position is identified by the location address.

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Mapping Method using Tables between Two Display Data Streams

      Disclosed is a method to map two display data streams with
different "field" definition, by using tables.  One data stream
defines a "field" as a series of screen positions (one-dimensional),
such as Field B in Fig. 1.  IBM* 3270 data stream is an example of
such a data stream.  In the data stream, a screen position is
identified by the location address.

      Another defines a "field" as a group of dispersed "elements",
that is, Field A in Fig. 1 consists of element-1 and element-2, where
an element can be a rectangle (two-dimensional).  Each field/element
is identified by the unique number.  In the data stream, a screen
position is identified either by the field/element number or by the
location address.  OSI/VT (Virtual Terminal) defined by ISO is an
example.

      One field of the latter data stream cannot be one-to-one mapped
to a field of the former data stream, but each sub-field in Fig. 1 is
mapped to a field of the former data stream.

      When an input display data stream of one data stream type is
received, the data steam is analyzed and the screen image and
associated attribute information are stored in the screen buffer and
two internal tables.  Then the output display data stream of another
data stream type is generated by referring to these internal buffer
and tables.  The information in these internal buffers and tables are
kept for subsequent data stream mapping.

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