Browse Prior Art Database

Copier Having CRT Display

IP.com Disclosure Number: IPCOM000041100D
Original Publication Date: 1987-Aug-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Devins, RJ: AUTHOR

Abstract

In a copier having a cathode ray tube (CRT) display, messages to be displayed to the human operator are defined by a message identifier (ID) and up to three message modifier bytes (MB), i.e., not by the text of the message itself. This ID and the various MB's are used to retrieve the text of the message from a message storage memory. The content of these memory locations are used to display the message on the CRT. The ID and MB's of the message currently on the CRT's screen are stored in memory.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 1

Copier Having CRT Display

In a copier having a cathode ray tube (CRT) display, messages to be displayed to the human operator are defined by a message identifier (ID) and up to three message modifier bytes (MB), i.e., not by the text of the message itself. This ID and the various MB's are used to retrieve the text of the message from a message storage memory. The content of these memory locations are used to display the message on the CRT. The ID and MB's of the message currently on the CRT's screen are stored in memory.

During continuous polling of a program loop which interrogates for possible message changes, a message control program routine compares the ID and MB's of the message currently being displayed with any new message ID and its MB's. If a difference is detected, the new message text portions are transmitted to the CRT's controller, and only the needed portions (perhaps less than all) of the message are changed.

For example, the ID may not change, but one or more of the MB's may change, resulting in the changing of only a portion of the CRT's current message.

Disclosed anonymously.

1