JPS63311524A - Shift instruction device - Google Patents

Abstract

PURPOSE:To improve the operability for shifting a driven body by providing a first control means which continuously shifts the driven body, a second control means which shifts the driven body by an instructed quantity and a selection means which selectively sets the first and second control means to operational states. CONSTITUTION:The first control means which continuously shifts the driven body 20 in accordance with a shifting instruction signal from a shifting instruction member 8, the second control means which shifts the driven body 20 by the instructed quantity in accordance with the shifting instruction signal from the shifting instruction member 8 and the selection mean which selectively sets the first and second control means to the operational states are supplied. Namely, when the driven body is intended to be shifted largely by the selection means, a continuous shifting mode is selected (first control means), and when the driven body is intended to be shifted little, a relative position mode is selected (second control means). Thus, the operability for shifting the driven body considerably improves.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides movement instructions for moving a sample image displayed on a display, an image such as a graphic cursor displayed superimposed on the sample image, and other driven objects. It is related to the device.

(Prior Art) Conventionally, a joystick, a trackball, or a similar device having an externally operable movement instruction member has been used as a movement instruction device for a sample image observed with a microscope or an image such as a graphic cursor. For example, a joystick moves an image in the direction of the inclination angle of the stick (or the opposite direction) as a movement instruction member at a constant speed or according to the inclination angle, and a trackball moves an image in the rotation direction of the ball as a movement instruction member. (or in the opposite direction) by an amount corresponding to the rotation angle.

[Problems to be solved by the invention] The joysticks and trackballs that have been conventionally used in such movement instruction devices each have their advantages and disadvantages.For example, in the case of a joystick, when you tilt the stick in a desired direction, the movement in that direction The driven object (the image in the above example) moves continuously (continuous movement mode), so it is suitable for operations that require large movements of the driven object. If you want to perform fine positioning, such as aligning the sticks, you have to tilt and raise the stick many times, making it extremely difficult to use.On the other hand, with a trackball, the rotation angle of the ball corresponds to the amount of movement of the driven object. (relative position mode), contrary to the joystick, it is possible to easily perform fine positioning of the driven object, but when attempting to move the driven object over a large distance, the ball must be rotated many times, resulting in poor operability.

As described above, either device is difficult to use, and the present invention aims to solve this drawback of the prior art.

[Means for Solving the Problems] In order to solve the drawbacks of the prior art, the present invention allows one movement instruction member to be used in two types of modes: continuous movement mode and relative position mode. That is, the present invention includes a first control means that continuously moves a driven body in response to a movement instruction signal from a movement instruction member, and a first control means that moves the driven body by a specified amount in response to a movement instruction signal from the movement instruction member. The movement instruction device includes a second control means and a selection means for selectively activating the first control means and the second control means.

[Effect]

Therefore, if you want to move the driven object by a large amount using the selection means, you should select the continuous movement mode (the first control means), and if you want to move the driven object finely, you should select the relative position mode (the second control means). The following is a concrete description of the case where a joystick is used as an example.

In the continuous movement mode, when the joystick is operated, the driven body can be continuously moved in the direction in which the joystick falls at a constant speed or at a speed that corresponds to the angle of inclination. The driven body continues to move continuously until the stick is returned to the center position.

In the relative position mode, when the stick is tilted, the driven body can be moved in the direction in which the stick is tilted by an amount corresponding to the angle at which the stick is tilted. These two modes can be switched at any time while operating the joystick using the selection means, so the operator can select and use the mode that is easy to use on the spot. performance is significantly improved.

Note that the driven object may be anything such as a sample image on a CRT, an image such as a graphic cursor, a stage, a probe, etc.

〔Example〕

Figure 1 shows an ITV camera attached to a microscope, a sample image (circular) and a graphic cursor 20.21 displayed on a CRT as shown in Figure 2, and a sample inserted by moving the graphic cursor 20.21. This is an embodiment of the present invention in which a sample image and graphic cursors 20 and 21 are moved using the same joystick in a minute dimension measuring device that measures the length of an arbitrary position on an image. The function will be explained below with reference to FIG.

The image of the sample 3 placed on the stage 4 is magnified by the microscope 2, converted into an electrical signal by the ITV camera 1, and taken into the image processing circuit 5. The image processing circuit 5 receives the signal from the joystick signal processing circuit 7. Two graphic cursors (2 in Figure 2) are placed on the sample image from the ITV camera based on
0.21) and sends the image to the CRT6 to display it on the screen. At the same time, the length between the two cursors on the CRTe is detected, and the actual sample is determined from the magnification of the microscope and ITV camera. Convert the above length to CRT6
Display above. The joystick signal processing circuit 7 receives signals from a joystick with a button (hereinafter referred to as joystick) 8 and a sample image/graphic cursor movement changeover switch (hereinafter referred to as changeover switch).
) 9, the switching signal determines whether the stage should be moved to move the sample image or the graphic cursor 20.21 should be moved on the CRT. Send image movement signal. stage controller 10
receives a signal from the siroistick signal processing circuit and drives the stage based on that signal. When the image processing circuit 5 also receives a signal from the joystick signal processing circuit 7, it moves the position of the graphic cursor 20, 21 to be displayed on the CRT 6 based on the signal. In either case, one joystick 8 can be used to freely select two modes: relative position mode and continuous movement mode.

First, set the changeover switch 9 to stage movement, and operate the joystick stick 8゛ to move the stage 4 so that the pattern on the sample to be measured is approximately in the center of the CRT. to move the cursor 20, and place the cursor 20 on the left end of the pattern to be measured as shown in FIG.

Finally, switch the changeover switch 9 to move the cursor 21,
Move the cursor 2 to the right end of the pattern you want to measure, sandwich the pattern you want to measure, and then read the length on the sample displayed on the CRT 6.

When performing these stick operations, when moving the stage to move the sample image or moving the cursor 20 or 21 from a distance to the vicinity of the pattern, there is no need for detailed positioning, and it is more convenient to be able to move at high speed. Therefore, operate the joystick in continuous movement mode, and when the cursor comes close to the edge of the pattern you want to measure, switch the joystick 8° to relative position mode and use it (detailed configuration will be described later). When you operate joystick 8 in mode, cursors 20 and 21 move in proportion to the angle you move stick 8", so cursor 2
0.21 thick (cannot be moved, but allows for quick fine positioning. (Note that the range in which the cursor 20 and 21 can be moved in relative position mode is CRT6
Although it depends on the resolution above, it is appropriate to set it to 1710th position of the entire screen. When the cursors 20 and 21 are aligned with the edge of the pattern you want to measure, issue an image movement prohibition signal there.
Release your hand from the stick 8" 6. When the image movement prohibition signal is issued, the image will not move until the stick 8" returns to the center position, so the cursor aligned in relative position mode will not move. When the joystick 8 is switched from the relative position mode to the continuous movement mode at a position other than the center, that is, when the cursors 20 and 21 are aligned,
When you release your hand from the button switch 8a, an image movement prohibition signal is automatically output (therefore, when using the relative position mode, turn on the switch 8a when operating the stick 8°), or Conversely, the button switch 8a attached to the top of the joystick or the like is pressed to output an image movement prohibition signal.

Next, a fourth embodiment of the joystick signal processing circuit 7 will be described.
It is shown in the figure and its operating principle will be explained. In this embodiment, a stage drive system using a pulse motor is used as the controller 10.

The joystick 8 with a switch shown in Fig. 4 is equipped with potentiometers 8b and 8c independently in order to output the X and Y components of the tilt angle of the stick 8a, and both terminals are connected to the power source of the controller. By connecting them, voltages proportional to their respective inclination angles are generated at the X-axis output and Y-axis output, as shown in FIG. 3(a). In addition, one terminal of the pushbutton switch 8a serving as a changeover switch is grounded and the other terminal is connected to the power supply through a resistor, so the output generated at the other terminal is normally at H level, and the switch 8a When is pressed, it becomes L level.

The joystick signal processing circuit 7 is composed of six blocks A to F, as shown surrounded by dotted lines in FIG. Block A is an X-axis circumference signal output circuit in continuous movement mode, block B is an X-axis circumference signal output circuit in relative position mode,
Block C is a movement clock and movement prohibition signal generation circuit;
Block D is a Y-axis circumference signal output circuit in relative position mode, block E is a Y-axis circumference signal output circuit in continuous movement mode, and block F is a switching circuit between continuous movement mode and relative position mode. (Block D and block E have the same circuit configuration as block B and block A, respectively, so the circuit diagrams are omitted.) The signals are input to the window comparator 42 in parallel. (The input/output characteristics of these circuits are shown in FIG. 3(b), (c), and (d), respectively.) The output of the zero cross comparator 40 indicates the rotation direction of the stage X-axis drive motor 54a, and The output of the value circuit 41 is input to the VF converter 43, which generates a clock having a frequency proportional to the inclination angle of the stick 8a to instruct the rotational speed of the stage X-axis drive motor 54a. The output of the VF converter 43 is inputted to an AND gate 44 along with the output of the window comparator 42 and the output of the movement inhibiting circuit consisting of the OR gate 49 and the SR flip-flop 50 of block C, and is passed through the AND gate 44 to the stage X-axis drive. Block A as the mode rotation speed instruction signal
is output from. The output of the VF converter 43 is input to the AND gate 44 by prohibiting the output clock of the VF converter 43 from passing through (1) the stick 8a.
(2) When the stick 8a is at a position other than the center, the motor is prevented from rotating due to circuit offset or drift (by the output of the window comparator 42). This is to prevent the stage 4 from starting to move when the switch is made (based on the output of the movement prohibition circuit of block C).

When the button switch 8a on the stick 8'' is in the continuous movement mode (the state shown in FIG. 4), the output of the zero cross comparator 40 passes through the de-ta selector 52a and is output to the pulse motor driver 53a. The output of the AND gate 44 (output of the VF converter 43) is also input to the pulse input terminal (CLK) to control the rotation of the motor 54a, and the stage 4 is controlled by the joystick 8. Continuously move in the direction specified by .

On the other hand, the X-axis output signal that entered block B enters an 8-bit AD converter 45 and is converted into an 8-bit digital signal, and then connected to the A input of an 8-bit digital comparator (hereinafter referred to as a comparator) 46. be done. Eight Q outputs of an 8-bit presettable amplifier down counter (hereinafter referred to as counter) 48 are connected to the B input of the comparator 46. A=B of comparator 46
The output is connected to one input of the two-man power NOR gate 47, and the output of the clock generator 51 of block C is connected to the other input of the NOR gate 47. The clock continues to be output until the input values of the A input and B input become equal. The output of the NOR gate 47 is input to the clock terminal CK of the counter 48, and is also input to the comparator 46.
A>B output of presettable amplifier down counter 4
Connected to the U/D terminal of the day. AD converter 45
The output of the counter 48 is connected to the IN terminal of the counter 48, and in the continuous movement mode, the input value of the IN terminal is always loaded, so the counter 48 outputs the input value of the IN terminal as is. , ASB of comparator 46
Both inputs have the same value. push button switch
When the notch 8a is pressed to enter the relative position mode and the stick 8'' is operated, the operation angle of the stick 8'' will cause A
The output of the D converter 45 changes, and the values of the A and B inputs of the comparator 46 differ. However, when the values of the A and B inputs differ, the NOR gate 47 determines that the count value of the counter 48 is different from that of the AD converter 45. Continue outputting the clock until it equals the output.

The comparator 46 compares the output value of the AD converter 45 with the count value of the counter 48 and outputs the output value of the counter 48.
Since the up and down of 8 is controlled, both values will always be equal and stop. On the other hand, the data selector 52a of the F block F is switched by turning on the button switch 8a. Therefore, the counter 48
The clock signal input to the F block F passes through the data selector 52a in the pulse motor driver 53a.
into the pulse input terminal (CLK) of the counter 48.
The up/down signal passes through the data selector 52a and is output to the rotation direction instruction terminal (C) of the pulse motor driver 53a.
W/CCW), so normal smoke driver 53
In step a, the pulse motor 54a is rotated by an amount proportional to the angle of change of the stick 8' and then stopped, thereby realizing the relative position mode.

The two-man OR gate 49 and the SR flip-flop 50 in block C provide a movement prohibition signal to prohibit clock output until the stick 8° returns to the center position when switching from relative position mode to continuous movement mode. is generated and input to the three-man power AND gate 44 of block A. The clock generator 51 generates a movement clock in the relative position mode and sends it to the two-man power NOR gate 47.

Blocks D and E are Y-axis potentiometers 8c.

This is a circuit for controlling the pulse motor driver 53b for driving the Y-axis according to signals from the bush button switch 8a and block C, and has exactly the same function as blocks A and B, so a description thereof will be omitted.

As already mentioned, the block F is composed of two data selectors 52a and 52b, and a button switch 8.
Continuous movement mode signals from blocks A and E and relative position mode signals from blocks B and D are selected and switched by the switching signal from block a, and the pulse motor driver 5
This is a circuit that sends signals to 3a and 5.3b.

FIG. 5 shows another embodiment of the joystick signal processing circuit, and its operating principle will be briefly explained.

This embodiment also applies the present invention to a stage drive system using a pulse motor.The block configuration of this embodiment is the same as that of the embodiment shown in FIG. Blocks A, B, D, E, and F, which have exactly the same circuit configuration, are shown only by dotted lines for simplification, and the circuit diagram of only block C will be drawn to explain the principle of operation. Button switch 8 on the joystick used as a mode changeover switch in the embodiment shown in Fig. 4
a is used to output an image movement prohibition signal, and once this switch is pressed, the SR flip-flop 50
° is reset, the stick 8" returns to the center, and movement of the image is prohibited until the flip-flop 50" is set.
This is a circuit that outputs the absolute value of the inclination angle of the stick at 8 degrees from the X and Y axis output values input from the Y axis potentiometer 8c. This output enters the comparator 58, where it is determined whether the continuous movement mode or the relative position mode is selected depending on the tilt angle of 8 degrees, and controls the data selectors 52a and 52b of block F (see FIG. 4). That is, when the tilt angle of the stick 8° is within a certain range, the mode is relative position mode, and when the tilt angle of the stick 8° exceeds the certain range, the mode is continuous movement mode (according to the comparator 58). By pressing the button switch 8a, the stick 8'' once returns to the center position, and then movement of the image is prohibited until it is operated again. Note that the AND gate 55 in FIG.
It is a gate to prevent entering D, and also,
The output of the OR gate 56 is a mode switching signal, and when it is at the H level, it is in the continuous movement mode, and when it is at the dem level, it is in the relative position mode. Whether it becomes H level or L level depends on the angle of inclination of the joystick. (H if outside a certain angle
If it is inside the level, L), in the relative position mode, the output of the counter 48 is made to match the output of the A/D converter 45 while the movement prohibition signal is issued and the stage is stopped while the stick 8゛ is returned to the center. Therefore, while the movement prohibition signal is being output, it is necessary to set the continuous movement mode, that is, the output of the OR gate 56 to the H level, regardless of the tilt angle of the stick at 8 degrees. It is functioning.

In the above description, the stick 8'' of the joystick 8 was used as an example of the movement instruction member, but the present invention can be achieved in the same way by using other structures such as the ball of a trackball.

〔Effect of the invention〕

As described above, according to the present invention, two operation modes can be freely switched and used with one movement instruction member, so the operability of moving the driven body is improved and many processes can be performed in a short time. .

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a micro-dimension side measuring machine using a joystick according to an embodiment of the present invention, and Fig. 2 is a CRT of a length measuring machine.
A diagram showing an example of the display screen, FIGS. 3(a), (b),
(c) and (d) are input/output signal characteristic diagrams of each part of the joystick signal processing circuit shown in Fig. 4, and Figs. 4 and 5 are diagrams of the joystick signal processing circuit for a stage drive system using a pulse motor. FIG. 3 is a block diagram showing different embodiments. (Explanation of symbols of main parts) 6...CRT 8...Joystick 8'...Stick 8a...Button switches 52a, 52b...Data select block A...X-axis circumferential signal Output circuit block B...X-axis layer signal output circuit in predetermined amount of movement mode Block D...Y-axis circumferential signal output circuit in predetermined amount of movement mode

Claims (1)

[Scope of Claims] A movement instructing device for moving a driven body in response to a signal from a movement instructing member, comprising: a first control means for continuously moving the driven body in response to a movement instructing signal from the movement instructing member; , a second control means for moving the driven body by a designated amount in response to a movement instruction signal from the movement instruction member; and a selection for selectively activating the first control means and the second control means. A movement instruction device comprising: means.