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Efficient Data Transmission in Remote Operation System by Intentional Transmission Delay

IP.com Disclosure Number: IPCOM000113441D
Original Publication Date: 1994-Aug-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 55K

Publishing Venue

IBM

Related People

Kato, S: AUTHOR

Abstract

Disclosed is a method for efficient data transmission in Remote Operation System. The Figure shows an overview of Remote Operation System. It is composed of Operator-subsystem (1), Target-subsystem (2) and communication line (3).

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 78% of the total text.

Efficient Data Transmission in Remote Operation System by Intentional
Transmission Delay

      Disclosed is a method for efficient data transmission in Remote
Operation System.  The Figure shows an overview of Remote Operation
System.  It is composed of Operator-subsystem (1), Target-subsystem
(2) and communication line (3).

      Keyboard input at Operator-subsystem (1) is transmitted to
Target-subsystem (2), and screen image of Target-subsystem (2) is
transmitted to Operator-subsystem (1).  Communication line (3) is the
bottle-neck in this system.  Intentional transmission delay relieves
this bottle-neck.

      At operator-subsystem (1), if the keyboard is hit, save the
data in its buffer and wait certain period for next keyboard input.
If next data arrives within certain period, wait again.  If buffer
becomes full or next data does not arrive within certain period, send
the data in the buffer.

       At target-subsystem (2), if screen changes, wait for acertain
period and check whether the screen changes again.  If it changes
within certain period, wait for the state that the screen does not
change drastically.  While the screen changes drastically,
intermediate state is not sent to Operator-subsystem (1).  If the
screen does not change within certain period, compare current screen
image to the one that has been sent previously, then send the
difference of screen image to Operator-subsystem (1).

      Multiple key data from Operator-subsy...