Switching device for display apparatuses exhibiting texts reading from left to right in order to produce texts reading from right to left

摘要

1. Circuit arrangement for video display units for the production of characters running from left to right or characters, in particular semitic characters, running from right to left, which comprises a display unit and a picture control unit (BST) which drives said display unit and contains a symbol store (SYR) and wherein the picture control unit is connected to a data store (DSP), characterized in that, in the case of a display unit featuring electron beam deflection, between the display unit (AZ) and the picture control unit (BST) there is arranged a first switching device (SE 1) by means of which the terminals for the horizontal deflection (FA, GA) of the display unit (AZ) can be switched over from a first position assigned to the left to right character display into a second position assigned to a right to left character display in which the terminals of the horizontal deflection unit (FA, GA) are transposed, and that the picture control unit (BST) comprises a further symbol store (SYL) for the right to left character display which can be switched on via a second switching device (SE 2).