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Method For Executing A Decimal Tab Operation On A Proportional Spacing Printer Using Text Recorded On A Fixed Escapement Printer

IP.com Disclosure Number: IPCOM000067778D
Original Publication Date: 1979-Oct-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Garcia, OL Pascoe, RA [+details]

Abstract

A decimal tab print operation, the alignment of the decimal point on a tab stop, recorded on fixed escapement printers, may be played out on a proportional spacing printer by utilizing a line buffer to store the control codes and text. A series of decimal tab codes is executed as regular tabs, causing carrier escapement until text is encountered. The text is then scanned until a decimal point is encountered, and a backspace code is inserted in the buffer for each character scanned. In a proportional spacing printer, the backspaces are assigned values based on the text characters scanned. The carrier is then de-escaped by the escapement value assigned to the backspaces, and playout of the text beyond the backspace codes occurs.