US5255361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and system for updating a display unit
Assignee: International Business Machines Corp
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Filing: 1991-04-04
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Granted: 1993-10-19
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Expires: 2011-04-04
Abstract
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.
Inventors
- 👤 Janet R. Callaway
- 👤 John M. McConaughy
- 👤 Steven T. Pancoast
- 👤 Joan M. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:48
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/14; G06F3/1415
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
166 words
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.
Claim 2
Dependent Claim
166 words
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.
Claim 3
Dependent Claim
21 words
The computer program as recited in claim 1 further includes means for determining whether said determined differences exceed a predetermined value.
Claim 4
Dependent Claim
56 words
The computer program as recited in claim 2 wherein said information to be displayed constitutes data which is representative of an entire display screen and wherein said transmitting means includes; means for discarding all current update commands; and means for transmitting all said data to said remote system if said determined differences exceed said predetermined value.
Claim 5
Dependent Claim
26 words
The computer program as recited in claim 1 further includes means for generating an update command for said selected one of said plurality of change categories.
Claim 6
Dependent Claim
77 words
The computer program as recited in claim 4 wherein said update command is a text string and wherein said selecting means includes: means for calculating the position said text string will occupy on said remote display unit; means for determining any attributes associated with said text string; and means for queuing said update command and data representing said text string, its position on said display unit and said attributes associated therewith for transmission to said remote system.
Claim 7
Dependent Claim
67 words
The computer program as recited in claim 4 wherein said update command is a scroll and wherein said selecting means includes: means for compressing information relating to said scroll into a window; and means for queuing said update command and data representing a number of lines scrolled and any additional lines of data to be displayed on said remote display unit for transmission to said remote system.
Claim 8
Dependent Claim
47 words
The computer program is recited in claim 4 wherein said update command is a window and further includes: means for calculating the position said window will occupy on said remote display unit; and means for determining whether said window is previously stored within said information processing system.
Claim 9
Dependent Claim
38 words
The computer program as recited in claim 7 further includes means for generating, in response to said window's being stored in said information processing system, an update command instructing said remote system to recall said previously stored window.
Claim 10
Dependent Claim
72 words
The computer program as recited in claim 7 wherein said window is not stored in said information processing system and further includes: means for saving information currently being displayed on said remote display unit which is to be overlaid by said window; and means for issuing a command to said remote system to save said information currently being displayed on said remote display unit which is to be overlaid by said window.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-10-18 | 1997-04-19 | 1997-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-10-18 | 2001-04-19 | 2001-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-10-18 | 2005-04-19 | 2005-10-19 | $7700.00 | Window Closed / Lapsed |