Method of and system for updating a display unit
First Claim
1. In an information processing system having a host system which communicates with a remote system, a computer program, that executes on and controls said information processing system, to selectively update a remote display unit associated with said remote system to display information being stored at said host system, said computer program comprises:
- means for determining differences between information being displayed on said remote display unit and said information being stored at said host system to be displayed on said remote display unit by comparing the contents of a host display buffer with the contents of a remote display buffer associated with said remote display unit;
means for selectively one of a plurality of change categories in response to said determining means; and
means for transmitting an update command from said host system to said remote system in response to said selected one of said plurality of change categories whereby only information which is different is transmitted to said remote system to update said remote display unit.
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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, a 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.
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Citations
9 Claims
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1. In an information processing system having a host system which communicates with a remote system, a computer program, that executes on and controls said information processing system, to selectively update a remote display unit associated with said remote system to display information being stored at said host system, said computer program comprises:
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means for determining differences between information being displayed on said remote display unit and said information being stored at said host system to be displayed on said remote display unit by comparing the contents of a host display buffer with the contents of a remote display buffer associated with said remote display unit; means for selectively one of a plurality of change categories in response to said determining means; and means for transmitting an update command from said host system to said remote system in response to said selected one of said plurality of change categories whereby only information which is different is transmitted to said remote system to update said remote display unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification