JPH0468392A - Image display device - Google Patents

Abstract

PURPOSE:To easily discriminate between an overlay input and a command input by discriminating whether touch area on a touch panel is large or small and discriminating between touch pen input and finger input. CONSTITUTION:An overlay display and a command display are made possible for a display image on a display 5. Then whether the touch area is large or small at the time of input is detected to discriminate between the overlay input to the common touch panel 1 using the touch pen 7 and the command input by the finger of the operator. Namely, the touch area by the touch pen 7 is smaller than that by the finger 8. Consequently, the both are easily discriminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention (Industrial Application Field) The present invention relates to an image display device configured to be capable of displaying an overlay and displaying commands on a displayed image.

(Prior art) Medical images (simply referred to as images) taken by various medical devices such as an X-ray CT device, an ultrasonic diagnostic device, and an MRr device are displayed on a display, and the displayed images are observed and used for diagnosis. An image display device is known. When performing diagnosis using such an image display device, necessary signal processing may be performed by writing (overlaying) or displaying a processing request (command) on the displayed image on the display.

FIG. 5 shows a case in which overlay input is performed on a displayed image, in which an operator directly inputs input to the touch panel 1 using the touch pen 7. Further, FIG. 6 shows a case where a command is inputted to a displayed image, and the input is performed manually by an operator touching the touch panel 1 with a finger 8. Alternatively, as shown in FIG. 7, the keyboard 9 is connected to the touch panel 1.
Alternatively, commands may be input using the mouse 10.

(Problems to be Solved by the Invention) Conventional image display devices have a problem in that they cannot distinguish between overlay input using a touch pen and command input using an operator's finger. Furthermore, when inputting commands using a keyboard or mouse, input operations are complicated because multiple pointing devices are used to input commands.

The present invention has been made in response to the above-mentioned problems.
It is an object of the present invention to provide an image display device that can easily distinguish between overlay input using a touch pen and command input using an operator's finger.

``Structure of the Invention (Means for Solving the Problems)'' In order to achieve the above object, the present invention provides an image display device that is configured to be able to display overlays and display commands on images displayed on a display. For the touch panel, overlay input and command input are each performed first.
The input means includes a human input means using the input means and the second input means, and an input discrimination means that detects whether the touch area of the touch panel is large or small and distinguishes between the first input means and the second input means. It is characterized by:

(Function) When performing overlay input using, for example, a touch pen on a common touch panel, and when inputting commands using, for example, an operator's finger, the touch screen detects the touch area at each input and uses the touch pen. It is possible to distinguish whether the input is by the operator's finger or the input by the operator's finger. Generally, the area touched by a touch pen is smaller than the area touched by a finger, so it is easy to distinguish between the two.

(Example) The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the image display device of the present invention, in which reference numeral 1 denotes a touch panel, and as shown in FIG. 2, pixels X, , X2, . x3.・
...and Yl, Y2, Y3, ... are multiple X,
They are arranged in a two-dimensional direction in the Y direction, and when the touch pen 7 or finger 8 touches any position, signals for a plurality of pixels corresponding to the area of this position are detected, and the signal of this position is detected. X and Y coordinate data are output.

2 is a controller with a touch pen 7 or a finger 8 as described above.
When a person touches the touch panel 1, the X and Y coordinate data of this position is detected based on signals for a plurality of pixels and is output to a CPU (Central Processing Unit).

Reference numeral 3 is a CPU that controls the entire control operation, and in particular, in this embodiment, when the X and Y coordinate data of the touch surface of the touch panel 1 is input from the controller 2, necessary control operations are carried out. When a touch on the touch panel 1 is started, the CPU 3 inputs X and Y coordinate data for a certain period of time t, and counts the number of pixels to distinguish whether it is an overlay input using the touch pen 7 or a command input using the finger 8. do. If you count the number of pixels for a certain period of time t, the area touched by the touch pen 7 will generally be as shown in Figure 3 (a
), the touch area of the pen tip (hatched area) is reflected in a linear shape, while the touch surface with a finger (hatched area) is square-shaped as shown in Figure 3(b). Figure 3 (b
) is 2 for the number of pixels depending on the touch area in Figure 3 (a
) is larger than 1 due to the number of pixels depending on the touch area. Also, if it is difficult to see a clear difference between the two,
A certain time t can be determined so that a clear difference is made. A standard number of pixels K is determined in advance corresponding to a certain time t, and when an overlay input with the touch pen 7 or a command input with the finger 8 is performed, the number of pixels corresponding to each touch area is set to the standard number of pixels. Compare with. Then, depending on the comparison result, it is determined whether the overlay input is performed using the touch pen 7 or the command input is performed using the finger 8.

4 is display memory from controller 2 to CPU 3
This is a memory for writing the X, Y coordinate data when the data is input to the memory. 5 is a display consisting of a CRT or the like, which displays images to be diagnosed under the control of the CPU 3, and displays necessary overlays or commands by inputting overlays with a touch pen 7 or inputting commands with a finger 8. . 6 is a line for exchanging various signals on a data bus.

Next, the operation of this embodiment will be explained with reference to the flowchart shown in FIG.

First, in step A, an input operation is performed on the touch panel 1. This is done by touching the touch panel 1 with the touch pen 7 or with the finger 8 while the image is being displayed on the display 5 in FIG.

For example, if an input operation is first performed using the touch pen 7, as in step B, for a certain period of time t from the start of the touch, signals for a plurality of pixels as shown in FIG. 3(a) corresponding to the touch area are transmitted. Output to CPU3.

Next, in step C, the CPU 3 compares the number of pixels based on the input from the touch pen 7 with 1 and the standard number of pixels. If K,>K, the flow proceeds to step D; if K1>K, the flow proceeds to step E.

As described above, since the number of pixels based on the input from the touch pen 7 is generally less than K, the flow proceeds to step E in this example. Therefore, in step E, it is determined that the input is an overlay input, and then, as in step G, subsequent consecutive inputs are interpreted as overlay inputs, and necessary processing corresponding to this input is performed.

Next, if an input operation is performed on the touch panel 1 with the finger 8, in step B for a certain period of time t from the start of the touch, as in the above case, a plurality of pixels corresponding to the touch area as shown in FIG. The signal of CPU3
is output to.

In step C, the CPU 3 compares the number of pixels based on the finger input with 2 and the standard number of pixels. As described above, the number of pixels based on finger input is generally greater than K, so in this example, the flow proceeds to step D. Therefore, in step D, it is determined that it is a command input, and then, as in step F, subsequent consecutive inputs are interpreted as command inputs, and necessary processing corresponding to this is performed.

As described above, according to this embodiment, the touch area on the touch panel is different between an overlay input operation using a touch pen and a command input operation using a finger, and by counting the number of pixels corresponding to each touch area, it is possible to distinguish between the two manual input operations. be able to. Therefore, overlay input and command input can be easily distinguished, and subsequent processing can be performed smoothly.

[Effects of the Invention] As described above, according to the present invention, since the touch pen input and finger input are distinguished by distinguishing between large and small touch areas on the touch panel, overlay input and command input can be easily performed. can be distinguished.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the image display device of the present invention, FIG. 2 is a schematic explanatory diagram of a touch panel used in the device of this embodiment, and FIG. 3(a). (b) is a detailed explanatory diagram of the present invention, FIG. 4 is a flowchart explaining the operation of this embodiment, FIG. 5 is an explanatory diagram of conventional overlay input operation, and FIGS. 6 and 7 are conventional commands. It is an explanatory diagram of input operation. DESCRIPTION OF SYMBOLS 1...Touch panel, 3...CPU (Central Processing Unit), 5...Display, 7...Touch pen, 8...Finger. y (b)

Claims (1)

[Claims] In an image display device configured to be able to display an overlay display and a command display on a display image,
Input means for performing overlay input and command input on a common touch panel using a first input means and a second input means, respectively; An image display device comprising an input distinguishing means for distinguishing between the input means and the input means.