International Business Machines Corporation

Dennis G Busch

Douglas Marvin Benignus

Robert J Grafe

Gary E Leikam

Thomas S Parker

Robert A Vossman

Suzanne K Baird

Astrid P Jeffries

A communication system is provided in which one data transmitting display terminal has the capability of transmitting a data stream in coded form to at least one data receiving terminal over a communication linkage. This data transmitting terminal further includes the capability of displaying, when necessary, the stream of coded data directly on its display so that if there is a transmission problem, the coded data itself can be analyzed in diagnosing the problem. The present communications system has the further capability of diagnosing data streams at remote display terminals. For example, if one transmitting terminal is communicating with a receiving terminal and a problem arises between the two terminals, the system provides the capability of the transmitting terminal sending the data stream to another receiving terminal remote from the first two terminals. This remote receiving terminal is a display terminal having the capability of displaying the received stream of coded data whereby the problems between the two communicating terminals may be diagnosed at a remote location where better engineering support may be available.

Data communication system with terminal for displaying the coded stream

A communications system is provided in which at least the receiving terminal is a display terminal. The receiving terminal has the capability of storing substantially more data than just the data the alphanumeric representations of which is being displayed. The data receiving display terminal includes the text storage buffer for storing the received data. The text storage buffer has a capacity greater than just the data being displayed. The receiving terminal also includes apparatus operative during data transmission for displaying only part of the stored received data. The display terminal further includes expedients for selectively designating portions of the displayed received data and apparatus for printing such designated portions.

Data communications system with receiving terminal for varying the

A data communications system for asynchronous communication having at least two data transmit/receive terminals wherein the display is periodically updated with new send or receive data. In the receive mode the data is accumulated in a receive buffer for a predetermined time interval and then transferred into a text storage buffer which then activates a display access method to process the stored data and update the display. The display access method then goes into an 'idle' mode and waits for the next transfer of data which does not occur until the predetermined time interval has expired. In the transmit mode the send data is transmitted without a delay but the display is updated after the predetermined time interval has expired.

Timer driven display updating

A display system for horizontally segmenting text made up of varying width characters and spaces. When a text measure is wider than the width of a display device, only a portion of the text can be displayed at one time. By dividing the text into segments, all of the text can be ultimately displayed. This is done automatically dependent upon the current location of a cursor positioned within one of the lines of the text. Entire lines of text, including a scale line, are sequentially loaded into a line buffer beginning with the line containing the cursor. A segment of the line containing the cursor is determined and displayed, and then corresponding segments of subsequent lines are determined and displayed. Thereafter, a corresponding segment of the scale line is determined and displayed. The display includes only whole characters adjacent its left edge.

Display system for horizontally segmenting text

A system for resetting or repositioning one set tab and causing following tabs to be repositioned. The apparatus is primarily made up of an electronic tab rack for storing the location of set tabs, input means for defining a new location for one of the set tabs, and logic means for repositioning the one tab to the new location in the tab rack and causing all following tabs to be repositioned in the tab rack. The system of this invention also has a memory for storing text and tab codes, an output device for displaying text, and control means for controlling the display of text relative to the repositioned tabs.

Growing community of inventors

Austin, TX, United States of America

Dennis G Busch