DE2354956B1 - Circuit for generating a video image on the screen of an office by means of two control organs in the form of a puncture - Google Patents

Description

Patent claims:

1. Picture position control for picture tubes, by means of which one on the screen of a picture tube appearing video image on the screen can be shifted in several directions is characterized by one for generating a continuous signal sequence A predetermined frequency serving pulse clock (12), one for counting the signals and at Reaching a predetermined count value for outputting a first output signal (16), and when a multiple of the predetermined count value is reached to issue a second output signal (21) serving first counting device (14, 19), one for assembling horizontal and perpendicular sync pulses, as well as image information signals to one to the Picture tube (11) applied picture blanking sync signal serving picture admixer (17), a Circuit (15, 20), by means of which first and second output signal each as a horizontal or vertical sync pulse are switched to the mixer (17), one for counting the Clock signals and when a predetermined count value is reached for the delivery of a third output pulse (27), and when a multiple of the predetermined count value is reached, it is used to emit a fourth output pulse (30) second counting device (23, 24), one when both predetermined count values occur at the same time corresponding to the third and fourth output pulse for generating an information signal and applying the information signal to the mixer to form the on the Screen-to-be-displayed image information containing image blanking synchronous signal Circuit (29, 32, 31, 33, 37, 22) and through for optionally changing the count value of a counting device with respect to that of the other counting device to move accordingly of the picture of the picture information signal appearing on the screen of the picture tube (11) devices (38, 43) serving along at least one axis of the kinescope screen.

2. Image position control according to claim 1, characterized in that the first counting device consists of two counters (16,19) with digit preselection, whereby the first preselection counter (16) the clock pulses specified by the clock generator (12) are applied, and this is set at To deliver the first output signal (16) reaching a predetermined count value, and the second preset counter (19) switched to count the first output signals and when they are reached a multiple of the first output signal for emitting the second output signal (21) is designed, and the second counting device consists of two counters (23, 24) with digit preselection, wherein the first (23) of these two preset counters is used to count the clock signals and when they are reached a predetermined count to output the third output signal (27), during the second (24) of these two preselection counters is used to count the third output signals and when a predetermined multiple count of the third output signal is reached, the fourth Output signal (30).

3. image position control according to claim 1, characterized in that the training a picture blanking synchronous signal serving circuit for the visual display of sections of the Image information is designed and that the image position of the appearing on the picture tube screen Image with optional changing of the predetermined count values of the one counting device with respect to that of the other counting device and corresponding offset of the image information signal " in relation to the position of the horizontal and vertical sync pulse (16, or 21) by the difference between the predetermined and the predetermined count values can be set.

4. image position control according to claim 3, characterized in that the optional Changing the counting value serving devices (38, 43) for the optional changing of both Count values are designed.

5. image position control according to claim 3, characterized in that the two preselection counters (23, 24) of the second counting device with for preselecting a selected initial count value and any start of counting at a plurality of selected ones with respect to the predetermined ones Counts of the first counting device devices serving counting values offset in time (38,43), by means of which the information signal with respect to the horizontal and vertical Synchronous pulse is displaceable, are provided.

For this application, the priority is taken from the corresponding USA. Application Ser. No. 309 268 of November 24, 1972.

The invention relates to a picture position control for picture tubes, by means of which an on the screen a picture tube appearing video image on the screen optionally in several directions is relocatable. The image position control is, for example, particularly good for position control of the Video images appearing on television picture tubes for entertainment or teaching purposes by a Operator suitable.

For control, d. H. Adjustment of the position of the video picture appearing on the screen of a picture tube Several different circuit arrangements have already been proposed for entertainment purposes been, but in most cases from relatively complex components and Circuits exist so that these known controls are expensive and require increased maintenance make necessary. In addition, these known devices are not versatile, complicated to use and cannot be adapted to different programs and different Customize visual displays.

There is therefore a need for a proportionate simple picture position control that is versatile and customizable, and the creation of a

3 4

such control is the task of the invention to move one or more directions and

tion represents. Includes a pulse clock generator 12, the example

The proposed solution for the task at hand consists of a conventional clock generator for a general image position control of the operating frequency of 6MHz mentioned at the beginning. The clock embodiment is characterized according to the invention 5 Ϊ2 emits signals or pulses with the frequency by a to generate a continuous Si 6 MHz over the line 13, and these signals are used for a sequence of predetermined frequency Im- are from a counter 14 with digit preselection, pulse Clock, one for counting the signals and also referred to as a preset counter in beer, counted, wel-reaching a predetermined count value to the down ^ rather after each 255 input-side counting pulses would give a first output signal, and when reaching io an output pulse would be generated,
The counter 14 is a conventional binary counter. The counter 14 is a conventional binary counter; Counting pulses applied on the output side generate an output signal as well as image information signals for an image signal, the purpose of which is explained below. A first output signal 16 forms a horizontal image mixer, a circuit by means of a synchronous pulse, which over the line 15 rather than a first and second output signal in each case as a horizontal or vertical synchronous pulse on image, which is also formed in a known manner -Beimischer 17 is fed. The mixer is connected to the mixer, one for counting the 20 17 forms from horizontal and vertical syn-clock pulses and when a predetermined chronimpulsen and information signals are reached a complex ses called a count value for the output of a third output pulse image blanking synchronsignal, and when a multiple of the previous one is reached - Image signal which is output at its output in the line 18 of the correct count value for outputting a fourth output.

Second counting device, a 25 serving pulse . B. 255 (also with the idea of forming the counting value to be displayed on the screen) delivers an output signal 21, which image information containing Bildaustastsynchron- 30 Ches represents the vertical synchronous pulse, the signal serving circuit and through to the optional for the reasons mentioned above the line 20 sen changing the count value of a counting device is fed to the mixer 17,
with respect to the other counting device of the picture tube 11 can thus information signals for the corresponding offset on the. Image are supplied, which are superimposed on the image of the image 35 right and vertical sync pulses 16 or information signal appearing through the horizontal screen of the picture tube, or information signal along at least one axis 21 generated grid,
the picture tube screen serving devices. These information signals are fed to the mixer. The second counting device is preferably 17 via the input line 22 , with the clock signals generated by the pulse generator on the screen of the picture tube 11 being switched for counting. The positional offset of the video image along one or both of two lines on the screen is based on the temporal and perpendicular axes or coordinates of the offset of the information signal. by means of the devices described below

According to one embodiment of the invention can be moved forward or backward.

the first counting device consists of two counters The position of a video image on the screen

with digit preselection, with the first preselection 45 of the picture tube 11 can be passed through in a simple manner

counter the tooth pulses emitted by the clock control two further counters 23, 24, each of which

are created, and this is set, when reaching conventional binary counters with digit preselection and

of a predetermined count value, the first output each consist, for example, of eight outputs and

output gnal, and the second preset counter are used to provide a total count of 256.

Counting of the first output signals switched and 50 The counter 23 represents a horizontal picture position

when a multiple of the first output counter is reached, to which the clock pulses from

signal for outputting the second output signal from clock generator 12 via the input line 26 is supplied

is placed, and the second counting device consists of, so that it is when it reaches a predetermined

two counters with digit preselection, whereby the first count value such as 256 has a third output

of these two preselection counters is used to measure the clock pulse 27 on the output line 28 Hefert, which in

to count signals and when a predetermined position of an operating mode selector switch 25 is reached

the third output signal to output the th count value, an input of the vertical image position counter 24

while the second of these two preset counters is connected. The counter 24 also consists of

serves to count the third output signals a conventional binary counter with digit prefix

and upon reaching a predetermined multiple choice, which points to a count of inclusive

Count value of the third output signal the fourth 256 counts.

Output signal. Both counters 23 and 24 supply over a respectively

In the drawing, an embodiment of an interposed AND gate 32 or 33 is a

The image position control embodied according to the invention is the only output signal on the line 29 or 31.

shown for a picture tube. 65 The third output pulse 27 thus appears over

The image position control 10 is used to connect a line 29 to the input of another

Screen of a picture tube 11 such. B. a remote AND gate 37.

See-picture tube appearing video image optionally in Correspondingly, an output signal 27 appears

5 6

in line 29 only when all eight input - this also one counting pulse later to

clamp 34 of AND gate 32 on and a count pulse earlier or equal to the count

are in the same state. In the same way it is used to generate the vertical sync signal

an output signal 30 appears in line 31 only serving counter 19 counts.

because if all the inputs 36 at the AND gate 5, as can be seen in the figure, leave

33 have the same condition. At the same time the preselector 38 and 43 each by means of a

Set occurrence of signals in both lines 29, 31 manual adjuster 44 and 46, so that through

The AND gate 37 therefore supplies an information-related adjustment of the manual adjusters 44, 46

signal in the line leading to mixer 17 and the resulting change in state in

22, and this information material goes into the picture - one or both preselectors 38, 43 the position

blanking synchronsignal in line 18 a. Position a on the screen of the picture tube 11

It is thus readily apparent that the video image appearing on is permitted,

the video image generated on the screen of the picture tube 11

stops in only one given position, as it has a very simple structure and is easy to move from the one consisting of counters 14 and 19 earn 15th. The control can be as shown here by

Most counting device delivered pulses 16 and 21 done manually or in some other way. Under-

the same pulse train speed as that of differing in the counts between horizontal

the second and perpendicular sync pulses consisting of counters 23 and 24 on the one hand and

Have counting device delivered pulses. . between horizontal and vertical image position

However, the position of the video image on the 20 counter is used to adjust the position of the

Screen of the picture tube 11 along one or two video images on the screen.

To move coordinate axes, the counting must.

of the horizontal and / or vertical end of the video image only offset in one axis

genzähler 23 or 24 are changed by this is to be, the mode selector switch 25 is in

each input side connected to a preselector 25 switched over in such a way that the switching arm 25 a the

the will. Connection to line 28 is interrupted and the line

The counter 23 is directly connected to a preselector 15 with the line 28, so that the

38 known design connected, so that a horizontal sync pulse 16 without an opposing

Pre-selection of counting 0, 1 or 2 via the lines.

39, 41, 42 can be applied to the meter and 30 can be performed. The output of the vertical display

this thus its counting with a delay of genzähler 24 then still allows one through

a counting pulse after the counter 14 (which like the manually adjustable preselector 43 controlled

As stated above, image position offset is preset to a count of 1.

is), equal to counter 14 or a counting pulse before. If counter 23 reaches the full count value (256)

the counter 14 begins, what is sufficient depending on it 35, the vertical image position counter 24,

is whether the preselector 38 the line 39, 41 or 42 as soon as this has reached its full count,

pretends. A pre-selection, designed in the same way, via the AND gate located in front of the mixer 17

Ler 43 is used to set the counter 24, so that ter 37 gated.

1 sheet of drawings

Claims (5)

Patent claims: 1. Picture position control for picture tubes, by means of which one on the screen of a picture tube appearing video image on the screen can be shifted in several directions is characterized by one for generating a continuous signal sequence A predetermined frequency serving pulse clock (12), one for counting the signals and at Reaching a predetermined count value for outputting a first output signal (16), and when a multiple of the predetermined count value is reached to issue a second output signal (21) serving first counting device (14, 19), one for assembling horizontal and perpendicular sync pulses, as well as image information signals to one to the Picture tube (11) applied picture blanking sync signal serving picture admixer (17), a Circuit (15, 20), by means of which first and second output signal each as a horizontal or vertical sync pulse are switched to the mixer (17), one for counting the Clock signals and when a predetermined count value is reached for the delivery of a third output pulse (27), and when a multiple of the predetermined count value is reached, it is used to emit a fourth output pulse (30) second counting device (23, 24), one when both predetermined count values occur at the same time corresponding to the third and fourth output pulse for generating an information signal and applying the information signal to the mixer to form the on the Screen-to-be-displayed image information containing image blanking synchronous signal Circuit (29, 32, 31, 33, 37, 22) and through for optionally changing the count value of a counting device with respect to that of the other counting device to move accordingly of the picture of the picture information signal appearing on the screen of the picture tube (11) devices (38, 43) serving along at least one axis of the kinescope screen. 2. Image position control according to claim 1, characterized in that the first counting device consists of two counters (16,19) with digit preselection, whereby the first preselection counter (16) the clock pulses specified by the clock generator (12) are applied, and this is set at Reaching a predetermined count to emit the first output signal (16), and the second preset counter (19) switched to count the first output signals and when they are reached a multiple of the first output signal for emitting the second output signal (21) is designed, and the second counting device consists of two counters (23, 24) with digit preselection, wherein the first (23) of these two preset counters is used to count the clock signals and when they are reached a predetermined count to output the third output signal (27), during the second (24) of these two preset counters is used to count the third output signals and when a predetermined multiple count of the third output signal is reached, the fourth Output signal (30). 3. image position control according to claim 1, characterized in that the training a picture blanking synchronous signal serving circuit for the visual display of sections of the Image information is designed and that the image position of the appearing on the picture tube screen Image with optional changing of the predetermined count values of the one counting device with respect to that of the other counting device and corresponding offset of the image information signal in relation to the position of the horizontal and vertical sync pulse (16, or 21) by the difference between the predetermined and the predetermined count values can be set. 4. image position control according to claim 3, characterized in that the optional Changing the counting value serving devices (38, 43) for the optional changing of both Count values are designed. 5. image position control according to claim, characterized characterized in that the two preset counters (23, 24) of the second counting device with for preselecting a selected starting count and any counting start on several selected in relation to the predetermined count values of the first counting device in time offset counting devices (38, 43) by means of which the information signal is displaceable with respect to the horizontal and the vertical sync pulse is provided are. For this application, the priority is taken from the corresponding USA. Application Ser. No. 309 268 of November 24, 1972. The invention relates to a picture position control for picture tubes, by means of which an on the screen a picture tube appearing video image on the screen optionally in several directions is relocatable. The image position control is, for example, particularly good for position control of the Video images appearing on television picture tubes for entertainment or educational purposes by a Operator suitable. For control, d. H. Adjustment of the position of the video picture appearing on the screen of a picture tube Several different circuit arrangements have already been proposed for entertainment purposes been, but in most cases from relatively complex components and Circuits exist so that these known controls are expensive and require increased maintenance make necessary. In addition, these known devices are not versatile, complicated to use and cannot be adapted to different programs and different Customize visual displays. There is therefore a need for a relatively simple image position control that can be used in many ways and customizable, and creating one COPY