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Proportional Time Access for Display Storage

IP.com Disclosure Number: IPCOM000076843D
Original Publication Date: 1972-May-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Beard, JN: AUTHOR [+3]

Abstract

In some applications of information display systems, the pertinent data displayed at most times utilizes only a small portion of the available screen space on the display. In such systems, where a plurality of displays are governed by a cluster controller, it is known to utilize random-access storage for the regeneration of the different displays governed by the common controller.

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Proportional Time Access for Display Storage

In some applications of information display systems, the pertinent data displayed at most times utilizes only a small portion of the available screen space on the display. In such systems, where a plurality of displays are governed by a cluster controller, it is known to utilize random-access storage for the regeneration of the different displays governed by the common controller.

The performance of such systems can be considerably enhanced by taking advantage of the statistical distribution of the data upon the various display screens, and utilizing the access time not required for regeneration to perform other functions.

A particularly useful implementation of this concept is to provide a blank field identifier to avoid unnecessary storage access. The display regeneration logic circuitry in the controller recognizes the identifier and prevents memory access operations for the rest of the cycle, which would correspond to the remainder of the line. More accesses for the other elements sharing the storage are then available.

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