Method and apparatus for generating three coordinate signals x, y, z for an x, y, z display device

A method of generating an x-, a y- and a z-coordinate signal for an x, y, z-display device, characterized by the following steps:

• a. First a synchronizing start signal (SP) is transmitted over a transmission line to said x, y, z-display;
• b. then, as a first time function of said start signal (SP), the x-coordinate signal is reset to a starting point in said display device itself;
• c. after appearance of said start signal (SP), as a second time function thereof, also the y-coordinate signal is reset to a starting point in said display device itself;
• d. after appearance of said start signal (SP), as a third time function thereof, said x-coordinate signal (X(t)) is generated in said display device (28, 29) itself, whereby at least the form of said x-coordinate signal (X(t)) is preset in said display device (28, 29);
• e. after appearance of said start signal (SP), as a fourth time function thereof, said y-coordinate signal (Y(t)) is generated, which consists in a sweep during predetermined time sections of partial signals (y=Y.sub.R), which are generated in said display device (28, 29) itself and which are preset in said display device (28, 29) at least in their form, which form differs from the form of said x-coordinate signal, and of pauses between said partial signals (y=Y.sub.R), whereby a first information variable (A) is introduced into said pauses via said transmission line;
• f. after appearance of said start signal (SP), as a fifth time function thereof, said z-coordinate signal (z(t)) is generated, which in a sweep during predetermined time sections consists of partial signals (z=constant), which are generated in said display device (28, 29) itself and which are preset in said display device at least in their form which differs from the forms of the x-coordinate signals and of the y-coordinate signals, and of pauses between these partial signals, whereby a second information variable (CA) is introduced into said pauses via said transmission line, and whereby said pauses and signals of said z-coordinate signal (Z(t)) are time-staggered relative to said pauses and signals of said y-coordinate signal (Y(t)).

An apparatus for generating an x-, y- and a z-coordinate signal for an x, y, z-display device, characterized by:

• a. a start signal generator (27) outside the display device (28, 29) for the generation of a start signal (SP),
• b. an x-generator (50) inside the display device for the generation of an x-coordinate signal (X.sub.R) as a first time function of the start signal,
• c. a y-generator (46) inside the display device for the generation of those signals (Y.sub.R) of the y-coordinate signal whose form is preset, as a second time function of the start signal,
• d. a z-generator (45, 49) inside the display device for the generation of those signals (z=constant) of the z-coordinate signal whose form is preset, as a third time function of the start signal,
• e. a first signal generator (1 to 24) outside the display device which furnishes the first information variable (A),
• f. a second signal generator (1 to 24) outside the display device which furnishes the second information variable (CA),
• g. a signal control system (23, 24, 25) which, in the pauses between the signals (Y.sub.R) of the y-coordinate signal generated in the display device itself, introduces the first information variable (A) into the signal display, and
• which, in pauses which are time-staggered to said pauses between the signals (z=constant) of the z-coordinate signals generated in the display device itself, introduces the second information variable (CA) into the signal display.