Data conferencing arrangement for stations having keyboards and displays, using a keyboard buffer and a screen buffer

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4939509
SERIAL NO

07148329

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An arrangement for data conferencing either multiple computers (FIG. 1), or multiple terminals with a computer (FIG. 4), includes software (21;511) for communicating keystrokes from conference participants to an application program (22;550) that is the object of the conference, and for communicating display signals from the application program to the participants. In one embodiment (FIG. 1), a first program (23) executing on a first computer (PC 2) transmits first computer-generated keystrokes to a second computer (PC 1), and displays on the first computer images received from the second computer, while a second program (21) co-resident with the application program (22) on the second computer enters received first computer keystrokes into the second computer, and sends second computer-generated images for display to the first computer. In a second embodiment (FIG. 4), a program (511) executing on a UNIX.RTM. system-based computer (504) receives keystrokes from connected terminals (501-503) and sends them to the application program (550), and receives images from the application program and transmits them to the terminals.

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Patent Owner(s)

Patent OwnerAddress
AMERICAN TELEPHONE AND TELEGRAPH COMPANY A CORP OF NY550 MADISON AVENUE NEW YORK NY 10022-3201
AT&T INFORMATION SYSTEMS INC A CORP OF DE6612 EAST 75TH STREET P O BOX 1008 INDIANAPOLIS IN 46206

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bartholomew, Randy L Broomfield, CO 1 102
Johnson, Peter L Westminster, CO 48 1317

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