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Message Concatenation

IP.com Disclosure Number: IPCOM000074126D
Original Publication Date: 1971-Mar-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Couland, G: AUTHOR

Abstract

This is a method for writing messages, especially messages resulting from an error detection. Such a message is a concatenation of text substrings and numerical substrings. The set of text substrings used by such a set of messages need far less storage than that needed for a literal loading of all messages. For a given message successive numerical substrings are obtained by successively converting an ordered set of binary data, using the right conversion table. Hence, it is proposed to describe messages in terms of text substrings and conversion tables.

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Message Concatenation

This is a method for writing messages, especially messages resulting from an error detection. Such a message is a concatenation of text substrings and numerical substrings. The set of text substrings used by such a set of messages need far less storage than that needed for a literal loading of all messages. For a given message successive numerical substrings are obtained by successively converting an ordered set of binary data, using the right conversion table. Hence, it is proposed to describe messages in terms of text substrings and conversion tables.

Whenever a message is to be written, a special routine (EDIT routine) is called with two arguments: - the message code CODE identifying the message, - a parameter list PARLIST -when numerical substrings are to be set in the message- that is a list of pointers at numerical data items ordered in sequence corresponding to that of related numerical substrings in the message. In the EDIT routine: . CODE selects the entry LISTPT (CODE) in the table of pointers at u message lists. This entry gives the location of the description list for the message. . The message list contains a sequence of items (one character each) ended by a delimiter F. There are two types of items distinguishable from each other by a type bit: - an item Sk contains the identifier 1 of the kth text substring in the message; the entry TXTPT (I) in the table of pointers at text substrings contains the length and the location of t...