DE2621146A1 - Electric typewriter with error correction facility - has buffer store giving visible indication of typed line before release for printing - Google Patents

Abstract

An electric typewriter is designed to facilitate the detection and correction of errors in a typed line. To achieve this the typing is undertaken in two phases. First a line of type is 'set' by key-operation and is tored in a buffer store provided with an alphanumeric readout. At this stage the line of type can be checked for errors. If no error is detected or after it has been corrected the line of type can released in the second 'printing' phase by operation of the space bar on the typewriter keyboard.

Description

Procedure to facilitate visual inspection and error

Correction in Typewriter Use The invention relates to a method to facilitate the operation of both the electric typewriter by experienced as well as inexperienced users.

Typewriter users are, on the one hand, educated and highly skilled Typists and, on the other hand, occasional, inexperienced typists. Silk groups of users carry out a visual inspection of what has been written while writing Text, but with different frequency and intent. The trained scribe usually writes "blindly, that is, the eyes remain on the original to be copied freezes and does not look at the keyboard or the typed text. in case of a however, the error noticed by the writer while typing becomes the one that was written Visually checked the text and took corrective action (erasing, Brush over, retype). Much of the typographical error is immediately during of the letter noticed. Corrective measures are time-consuming, because mostly the whole thing Word must be removed and rewritten. Also, erasing does a high pollution of the machine. The inexperienced scribe, on the other hand, looks at it in the extreme When typing the individual letters, first use the keyboard and check then the typed letter visually. In case of a typo, be Corrective measures were taken immediately here as well.

According to the invention to facilitate the visual inspection and the Correction of typing errors suggested, typing in two phases, the "setting" and the "printing", subdividing, and the electric typewriter to be equipped with a storage and display device. The screamer continues the sequence of letters to be typed into a memory using the keyboard is provided with an alphanumeric display. After completing the "setting" of the letters the visual inspection can be carried out and, if this is not possible, to discover a fault leads to the release of the Contents of the memory for "printing". One chooses the amount of memory and display so that a high percentage of individual There is space for words in it (e.g. approx. 15 characters), the space bar on the typewriter can be used for print approval. For longer words the memory is with one z. B. to equip acoustic overflow signal.

Using the space bar for printing has the advantage that the experienced writer can write as usual. However, if typing errors are recognized in the "setting" phase, after a visual inspection of the display, he can avoid of erasing by simultaneously deleting and overwriting the faulty memory location make a correction. For the inexperienced writer, this procedure exists the possibility of word-by-word "setting" with subsequent visual inspection and approval to "print" through the space bar. This method has the further advantage that the writing edge of the sheet, e.g. Egg. by a flashing character in the alphanumeric Display field can be marked. Through this visual representation of the edge and the current distance of the written text from it is a better observance of the edge than to be expected with the previously common acoustic display.

The typing point currently being controlled by the keyboard is also included of the word memory in the display to mark ao that the search for an erroneous Writing point is facilitated.

The alphanumeric display can be connected by means of a cable have a location separate from the typewriter.

In this way it is possible to have the display field immediately next to it to provide the writing template so that the activities of the eyes during visual inspection (Change of fixation, adaptation and accommodation) can be reduced. This will make the Typing fatigue reduced.

The advantages achieved with the invention therefore exist in particular in that the visual inspection when typing for experienced and untrained User is facilitated. Furthermore, the time required to correct a high Percentage of errors decreased.

In addition, it is easier to keep to the right fire. Finally, by not using needles, there is less soiling of the Typewriter scored.

The method is explained in FIG. 1 using an exemplary embodiment.

With the keyboard 1 the memory 2 is written, its content is shown in the alphanumeric display 3, the z. Egg. next to the target 4 is set up. After the print approval, e.g. Egg.

Using the space bar on keyboard 1, the content of memory 2 written by printing unit 5.

Claims (4)

Claims 1 method to facilitate visual inspection and the correction of errors in typing, characterized in that the electrical Typewriter with a buffer memory and an alphabetic display for max 1 typewriter line and a release button for printing the memory contents is equipped. 2. Procedures to facilitate control and error correction typewriting according to claim 1, characterized in that the release key the typewriter space bar is used to print. 3. Procedures to facilitate visual inspection and correction of errors in machine writing according to Claims 1 and 2, characterized in that the alphanumeric display of the buffer memory has a variable installation location. 4. Procedures to facilitate visual inspection and correction of errors in machine writing according to Claims 1, 2 and 3, characterized in that the current writing position in the alphanumeric display of the buffer memory and the writing edge of the sheet of paper are displayed.