G - Physics – 09 – G
Patent
G - Physics
09
G
375/13
G09G 3/04 (2006.01) G06F 17/21 (2006.01) G06F 17/24 (2006.01) G09G 1/00 (2006.01)
Patent
CA 1195788
ABSTRACT APPARATUS FOR PRODUCING A DISPLAY OF DATA ON THE SCREEN OF A VISUAL DISPLAY UNIT For editing purposes it is desirable to display on the screen (BS) of a visual display unit (AE) control signals which determine the properties of alphanumerical and/or graphic characters. Code words (CW) assigned to the control signals and characters are stored in a page store (SP). A control signal can be displayed on the screen (BS), in response to actuation of a key of a keyboard (TA) assigned to the control signal, by means of a special symbol, for example the write mark. Consecutive positions of this control signal or simultaneously all the positions assigned to this control signal can be displayed on the screen (BS) by means of appropriate key actuation at the keyboard (TA). A switching stage (S) is provided which is supplied by the keyboard with the code word (CWl) assigned to the relevant control signal, compares the code word with the code words stored in the page store (SP), and supplies an image control unit (BST) with signals (S2) for triggering the display of the special signal on the screen (BS) when a comparator (VG) establishes that a code word (CW) read out from the page store (SP) is identical to the code word (CWl) input by means of the keyboard.
395759
Altmann Helmut
Diaz Hernando
Popp Otmar
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
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