Browse Prior Art Database

Tab Stop Storage

IP.com Disclosure Number: IPCOM000085290D
Original Publication Date: 1976-Mar-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

McCray, WR: AUTHOR

Abstract

An electronically controlled typewriter employs a tab stop storage to save a standard set of tab stops, which may thereafter be employed during different portions of the generation of a document.

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Tab Stop Storage

An electronically controlled typewriter employs a tab stop storage to save a standard set of tab stops, which may thereafter be employed during different portions of the generation of a document.

Often in a typed document, a table will be preceded and followed by standard text. A set of tab stops will be used for the preceding text. Different tab stops will be used for the table. When the table is complete, the typist generally wishes to return to the original set of tab stops for the remaining text.

In electronically controlled typewriters, the tab stops are electronically stored in a tab control unit 11. These stops may be stored upon the depression of a "save" key, thereby gating them through gate 13 to tab store 15. New tab stops may then be entered into the tab control 11. Thereafter, the stored tab stops are gated to the tab control 11 upon the depression of a "recall" key, thereby gating them through gate 17.

Tab stops are stored as a number of characters from the left edge of the writing line. Thus, if tab stops exist at 10, 20, 30, 40 and 50 characters when printer 19 is printing in 10 pitch, a "save" command causes the tab stops to be stored in tab store 15. If the pitch is thereafter changed to 12 pitch and a "recall" command is executed, the recalled tab stops will be at 10, 20, 30, 40 and 50 characters in 12 pitch. These will not be in the same physical locations, but will have the same character spacing as in the original pitch.

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