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Improved Performance through Batch Command Processing between a Work Station Controller and Non-Programmable Terminal

IP.com Disclosure Number: IPCOM000103965D
Original Publication Date: 1993-Feb-01
Included in the Prior Art Database: 2005-Mar-18
Document File: 2 page(s) / 66K

Publishing Venue

IBM

Related People

Kiel, HG: AUTHOR [+4]

Abstract

A communications protocol between a work station controller (WSC) and a non-programmable terminal (NPT) using a "batch" command is disclosed.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 59% of the total text.

Improved Performance through Batch Command Processing between a Work Station Controller and Non-Programmable Terminal

      A communications protocol between a work station controller
(WSC) and a non-programmable terminal (NPT) using a "batch" command
is disclosed.

      A work station controller (WSC) supports multiple
non-programmable terminals (NPTs).  This invention is implemented in
the WSC and NPT.  The flow of display data streams between a host
processor and a WSC, and NPT commands between a WSC and an NPT is
shown in the figure.

      The host sends an output display data stream to the WSC when a
new display screen is to be presented on an NPT.  The WSC processes
the data stream, and sends commands and data to the NPT to create the
new display screen.  After each command is sent to the NPT, the WSC
waits for acknowledgment that the NPT successfully received the
command before sending the next command to the NPT.  When the next
command is sent to the NPT, the NPT may not have completed processing
of the previous command.  The NPT can indicate that it is still busy
processing the previous command.  The WSC will send the next command
again later (the NPT could again indicate that it is busy).

      In order to reduce the number of commands (and, therefore,
handshaking between the WSC and NPT), the NPT can support a batch
command buffer in the NPT.  The NPT informs the WSC of batch command
buffer capability and the size of the batch command b...