Method of and system for updating a display unit

Patent 5043919 Issued on August 27, 1991. Estimated Expiration Date:

December 19, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Timesharing programmable display system
Patent #: 4119953
Issued on: 10/10/1978
Inventor: Yeschick

Controller system or emulating local parallel minicomputer/printer interface and transferring serial data to remote line printer
Patent #: 4641263
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Issued on: 05/12/1987
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Inventors

Application

No. 287751 filed on 12/19/1988

US Classes:

715/733, For plural users or sites (e.g., network)715/784Window scrolling

Examiners

Primary: Herndon, Heather R.

Attorney, Agent or Firm

St. Julian; H., Lefeve; Douglas H., McBurney; Mark E.

International Class

G06F 015/20

Abstract

This invention relates to updating a display unit associated with a remote computer system communicating with a host computer system. Information, which is currently being displayed on the display unit and information to be displayed thereon are compared to determine any differences which exist therebetween. If the differences exceed a predetermined value, an update command is generated and transmitted by the host computer system to the remote computer system along with the information to be displayed if facilitate the updating of the display unit. If the differences do not exceed the predetermined value, it is determined which of a plurality change categories should be used to transmit the differences to the remote system in the most efficient manner. An update command, which is associated with the selected one of the plurality of change categories, and data representing the differences are then enqueued for transmission to the remote system to facilitate the updating of the display unit.

Other References

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Sarin, S., "Computer-Based Real-Time Conferencing Systems", Oct. 1985, pp. 33-45
Foster, G., "Cognoter, Theory and Practice of a Colab-Orative Tool", 1986, pp. 7-15
Steffik, M., "WYSIWIS Revised: Early Experiences with MultiUser Interfaces", Dec. 3-5, 1986, pp. 276-29