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Composite Character Printing and Encoding

IP.com Disclosure Number: IPCOM000095387D
Original Publication Date: 1965-Dec-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 60K

Publishing Venue

IBM

Related People

Young, RJ: AUTHOR

Abstract

Composite characters, such as e, are automatically typed and encoded for input-output operation in the sequence base character, backspace, and modifying character. The coded information is divorced from any specific keyboard arrangement.

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Composite Character Printing and Encoding

Composite characters, such as e, are automatically typed and encoded for input-output operation in the sequence base character, backspace, and modifying character. The coded information is divorced from any specific keyboard arrangement.

After a base character is typed in the usual manner through mechanism as described in U.S. Patent 2,919,002, not shown, and the usual letter feed escapement has occurred, the base character e can be modified by an accent by depression of key 1. Interposer 2 is moved downwardly and latched by leaf spring 3. However, print cycle control bail 4 is not actuated due to the absence of a tab 5 on interposer 2 and no print cycle immediately occurs.

Auxiliary backspace bail 6 is also depressed, actuating interposer 7 through link 8 and causing a backspace operation to be performed. A backspace code is generated in the output device, for example, a paper tape punch, not shown, in response to the backspace operation. Upon termination of the backspace operation, interposer 7 is restored and rotates links 8 and 9 to trip bail 4. The previously stored accent interposer 2 is operated causing a print operation and encoding of an accent code.

The output code thus prepared includes automatically the sequence base code, backspace code, and modifying code. A printer capable of responding to these codes in normal fashion properly causes printout of the composite character. For example, a typewriter having int...