Patent US4565789A successfully refreshed from Google Patents.
EP0616448A2
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EP
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Computer conferencing method
Assignee: NCR International Inc
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Filing: 1994-03-15
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Granted: —
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Expires: 2014-03-15
Abstract
Abstract In an arrangement wherein a plurality of computers are linked together, one computer runs an application program. Each computer can be in an application mode wherein the application program may be controlled, an annotation mode wherein annotations made at one of the computers can be viewed at any of the computers, or a view mode wherein neither application control nor annotations are permitted, but a common display may be viewed.
Inventors
- 👤 Allison A. Carleton
- 👤 Theresa M. Pommier
- 👤 Krista S. Schwartz
- 👤 Catherine M. Fitzpatrick
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 19:37
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/033; G06F3/038; G06F3/048; G06F3/0481; G06F3/14; G06F3/1454; H; H04; H04L; H04L12/00; H04L12/02; H04L12/16; H04L12/18; H04L12/1813; H04L12/1822; H04L12/1827; H04L65/00; H04L65/40; H04L65/403; H04L67/00; H04L67/01; H04L67/10; H04L67/1095; H04L67/50; H04L67/75; H04L9/00; H04L9/40; H04N; H04N7/00; H04N7/14; H04N7/15; G09; G09G; G09G2360/00; G09G2360/04; H04L65/1066; H04L65/1101; H04L67/131; H04L69/00; H04L69/30; H04L69/32; H04L69/322; H04L69/329
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
80 words
A method of operating a plurality of interlinked computers, characterized by the steps of: running an application program on one of said computers and operating each computer selectively in an application mode, or an annotation mode, wherein a computer in application mode can operate on said application program, and a computer in annotation mode can annotate its own display and cause the annotations to be displayed by the other computers as a common display, but cannot operate said application program.
Claim 2
Dependent Claim
32 words
A method according to claim 1, characterized in that each computer can operate in a viewing mode wherein said common display may be viewed but application program operations and annotations are inhibited.
Claim 3
Dependent Claim
53 words
A method according to claim 1 or claim 2, characterized by the step of running a message-driven operating system on each computer, intercepting messages provided by the operating system of a computer operating in application mode, and, if the messages are directed to the application program, causing all computers to receive the messages.
Claim 4
Dependent Claim
32 words
A computer system for carrying out a method according to any one of the preceding claims, including a plurality of interlinked computers each operable selectively in an application or an annotation mode.
References Cited (Backward Citations)
No citation records indexed.
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