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 method of selectively updating a remote display unit associated with said remote system to display information being stored at said host system, said method comprising the steps of:
- 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;
selecting one of a plurality of change categories in response to said determined differences; and
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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Accused Products
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.
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Citations
35 Claims
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1. In an information processing system having a host system which communicates with a remote system, a method of selectively updating a remote display unit associated with said remote system to display information being stored at said host system, said method comprising the steps of:
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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; selecting one of a plurality of change categories in response to said determined differences; and 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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10. In an information processing system having a host system which communicates with a remote system, a method of selectively updating a remote display unit associated with said remote system to display information being stored at said host system, said method comprising the steps of:
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copying contents of a host system display buffer in said host system into a host desk top buffer in said host system; comparing contents of said host desk top buffer and information being displayed on said remote display unit to determine the differences therebetween; generating an update command in response to said comparing step for said differences; and transmitting said update command to said remote system to update said remote display unit. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An information processing system for selectively updating a remote display unit associated with a remote system to display information being stored at a host system, said system comprises:
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a host desk to buffer means in said host system for storing screen data associated with said host system; a remote display image buffer means for storing screen data associated with said remote display unit; means for comparing said screen data stored in said host desk to buffer means with said screen data stored in said remote display image buffer means; means, in response to said comparing means, for generating an update command which represents a change in said host desk top buffer means; and means for transmitting said update command from said host system to said remote system to update said remote display unit. - View Dependent Claims (25, 26)
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27. In an information processing system having a host system which communicates with a remote system, a system for selectivley updating a remote display unit associated with said remote system to display information being stored at said host system, said system 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 selecting 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 (28, 29, 30, 31, 32, 33, 34, 35)
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Specification