Browse Prior Art Database

Electronic Typewriter Having Automatic Erasure of Spaces

IP.com Disclosure Number: IPCOM000062380D
Original Publication Date: 1986-Nov-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Gerstle, PJ: AUTHOR [+2]

Abstract

In an electronic typewriter having a memory, the insertion of unnecessary spaces at the relocate point is avoided. This prevents the typewriter from being in the correction mode instead of the normal typing mode without the operator being aware of it. When an operator of an electronic typewriter spaces out too far on the line and then backs up by using the backspace key instead of the erase key, the spaces are not erased from memory. This results in the active point moving to the left of the relocate point, which remains where the spaces ended, so that the typewriter goes into the correction mode while typing is done over these spaces. The operator is unable to know that the typewriter is in the correction mode since these spaces are just white space on the paper and on the display.

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Electronic Typewriter Having Automatic Erasure of Spaces

In an electronic typewriter having a memory, the insertion of unnecessary spaces at the relocate point is avoided. This prevents the typewriter from being in the correction mode instead of the normal typing mode without the operator being aware of it. When an operator of an electronic typewriter spaces out too far on the line and then backs up by using the backspace key instead of the erase key, the spaces are not erased from memory. This results in the active point moving to the left of the relocate point, which remains where the spaces ended, so that the typewriter goes into the correction mode while typing is done over these spaces. The operator is unable to know that the typewriter is in the correction mode since these spaces are just white space on the paper and on the display. However, several major functions either work differently or not at all when the typewriter is in the correction mode. For example, automatic carrier return does not work. To avoid this problem, there is automatic erasure of spaces when they are backspaced over at the relocate point, automatic erasure of spaces at the end of a line when a carrier return is erased, and automatic erasure of all contiguous spaces left of the relocate point whenever a relocate operation is performed. This enables an operator to space out on a line before moving the paper down to make a correction on the preceding line, for example, without having the...