JPS6111842A - Picture display device - Google Patents

Abstract

PURPOSE:To make the operation of a joy stick correspond to the movement of a cursor easily by calculating the inclined direction and angle of the joy stick on the basis of respective components of the X and Y directions due to the inclination of the joy stick and respective inclined angles and setting the moving direction and speed of the cursor. CONSTITUTION:When the outline or the like of a picture on a picture display device 2 is to be tracted by the movement of the cursor based upon the operation of the joy stick 4, X and Y direction angle detectors 6, 8 fitted to the joy stick 4 are connected to an arithmetic circuit 10, which is connected to a display device 2 through a bearing setter 12 and a speed setter 14. The detector 6, 8 detect the component of the X direction due to the inclination of the joy stick 4 and its inclined angle and the component of the Y direction and its inclined angle respectively, the circuit 10 calculated the inclined direction and angle of the joy stick 4, and on the basis of the calculated result, the setters 12, 14 set up the bearing of a direction mark indicating the moving direction of the cursor and the moving speed of the cursor respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention is suitable for use when tracing the outline of an image displayed on an image display device by operating a joystick while moving a cursor. The present invention relates to an image display device.

(b) Prior art - Generally, in ultrasound diagnostic equipment, it is necessary to measure the area within a specific area by tracing the outline of an image displayed on an image display while moving a cursor using a joystick. There are cases. By the way, in the conventional technology, when the joystick is tilted to the right, the cursor moves to the right, and when the joystick is tilted to the left, the cursor moves to the left, and depending on the degree of tilt of the joystick, the cursor moves quickly or slowly. Some devices are configured so that the moving direction and moving speed of the cursor are set depending on the tilt direction and tilt angle, respectively.

g) Problem to be solved by the invention When tracing a specific outline of an image with a crab crane,
The joystick must be operated while looking at the screen of the image display, but in this case, with the conventional configuration described above, the joystick at hand and the movement of the cursor on the image display cannot be operated. There is a problem that it is difficult to make a correspondence with the data, and it is not possible to trace it smoothly. In particular, since the direction of movement of the cursor cannot be predicted at the time the cursor starts moving, failures will be repeated.

(D) Purpose The present invention solves the problems of the conventional art and allows the cursor movement direction on the image display to be displayed in advance in relation to the joystick, thereby allowing the cursor to smoothly outline the image. The purpose is to enable tracing.

(E) Structure In order to achieve such an object, the present invention includes an image display device and a joystick for moving a cursor displayed on the image display device, and also includes an X-direction component caused by tilting the joystick. and an X-direction angle detector that detects its X-direction component inclination angle, a Y-direction angle detector that detects a Y-direction component orthogonal thereto and its Y-direction component inclination angle, and these X and Y-direction angle detectors. an arithmetic circuit that calculates the inclination direction and inclination angle of the joystick based on the detection output of the arithmetic circuit; an azimuth setting device that sets the orientation of a direction mark indicating the moving direction of the cursor based on the arithmetic results of the arithmetic circuit; and the arithmetic circuit. A speed setting device is provided to set the moving speed of the cursor based on the output of the calculation result, so that the operation of the joystick and the moving direction of the cursor can be easily correlated.

(f) Examples The present invention will now be described in detail based on examples shown in the drawings.

FIG. 1 is a block diagram of the image display device of this embodiment. In the figure, reference numeral 1 denotes an image display device, 2 an image display on which ultrasonic diagnostic images and the like are displayed, and 4 a joystick for moving a cursor displayed simultaneously on the image display 2. Further, 6 is an X-direction angle detector that detects the X-direction component of the joystick 4 and its X-direction component inclination angle, and 8 is a Y-direction angle detector that detects the Y-direction component orthogonal thereto and its Y-direction component inclination angle.
A direction angle detector 10 detects the joystick 4 based on the detection output from the X and Y direction angle detectors 6.8.
This is an arithmetic circuit that calculates the direction of inclination and the angle of inclination, respectively. Reference numeral 12 denotes a direction setting device that sets the direction of a direction mark indicating the moving direction of the cursor based on the calculation result of the calculation circuit 10, and numeral 14 denotes a speed setting device that sets the moving speed of the cursor based on the calculation result of the calculation circuit 10.

In the image display device 1 having the above configuration, when tracing the outline of the image displayed on the image display device 2 with a cursor,
First, when the joystick 4 is tilted in a certain direction, the X-direction component of the joystick 4 and the tilt angle of the X-direction component are detected by the X-direction angle detector 6. Further, a Y-direction component of the joystick 4 perpendicular to the X-direction and an inclination angle of the Y-direction component are detected by a Y-direction angle detector 8 . The detection outputs of the X-direction angle detector 6 and the Y-direction angle detector 8 are then given to the arithmetic circuit 10 at the next stage. The arithmetic circuit 10 calculates the inclination direction r and the inclination angle θ of the shimmy stick 4 based on the detection outputs from the X and Y direction angle detectors 6.8. The calculation circuit 10 calculates the calculated inclination angle θ of the shimmy stick 4 to a predetermined value θ. In the following cases, the output of the calculation result is not given to the speed setter 14.

Therefore, the cursor remains at the initial display position on the image display 2. On the other hand, the arithmetic circuit 10 provides the azimuth setter 12 with an output of the arithmetic result corresponding to the calculated value of the tilt direction r of the center stick 4. Therefore, the azimuth setting device 12 sets the azimuth of the direction mark transfer based on the calculation result from the calculation circuit 10. As a result, image display 2
As shown in FIG. 2, a direction mark m whose orientation is set corresponding to the tilt direction r of the joystick 4 is displayed with the cursor k as the reference point.

Further, the joystick 4 is tilted so that the tilt angle θ of the joystick 4 reaches a predetermined value θ. If it is above, the calculation circuit 1
0 provides the speed setter 14 with an output of the calculation result corresponding to the value of the tilt angle θ of the tilt stick 4. Therefore,
The speed setter 14 sets the moving speed of the cursor based on the calculation result from the calculation circuit 10. In this case, the moving speed of the cursor set by the speed setting device 14 is based on the current tilt angle θ of the joystick 4 and the predetermined value θ. Therefore, when the inclination angle θ of the joystick 4 is small, the cursor movement speed is slow, and as the inclination angle is increased, the cursor movement speed becomes faster. In this way,
The cursor moves in the direction indicated by the direction mark and at a moving speed corresponding to the tilt angle θ of the joystick 4.

(g) Effects As described above, according to the present invention, since the direction of movement of the cursor is displayed in advance by the direction mark, it becomes possible to predict the direction of movement of the cursor as the joystick is operated. Therefore, anyone can smoothly Y-race the outline of an image without making any mistakes, improving work efficiency.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a blog diagram of an image display device, and FIG. 2 is an explanatory diagram showing an example of a display screen of the image display device. 1... Image display device, 2... Image display device, 4... Joystick, 6......
X-direction angle detector, 8...Y-direction angle detector,
10... Arithmetic circuit, 12... Direction setter, 14... Speed setter.

Claims (1)

[Claims] (1) An X-direction angle detector that includes an image display and a joystick that moves the cursor displayed on the image display, and that detects the X-direction component and the inclination angle of the X-direction component due to the tilt of the joystick. and a Y-direction angle detector that detects a Y-direction component perpendicular to this and a Y-direction component tilt angle, and a tilt direction and a tilt angle of the joystick based on the detection outputs from these X and Y direction angle detectors, respectively. an arithmetic circuit for calculating, an azimuth setting device for setting the azimuth of a direction mark indicating the moving direction of the cursor based on the arithmetic result of the arithmetic circuit;
An image display device comprising: a speed setting device that sets a cursor moving speed based on the calculation result output of the calculation circuit.