JPH09319516A - Digital image processing equipment - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To release the control function of the cursor movement display by the mouse from the CPU board to reduce the load on the CPU board,
Increase processing capacity. A mouse interface circuit (18) is provided on an image display board (12), a mouse (17) is connected to the mouse interface circuit (18), a position where a cursor (16) should be displayed is calculated in response to a signal from the mouse (17), and a screen of an image display device (15) is displayed. The image display board 12 is controlled to display the cursor 16 at that position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital image processing apparatus suitable for medical image diagnostic apparatus such as X-ray CT apparatus and MRI apparatus.

[0002]

2. Description of the Related Art In a medical image diagnostic apparatus such as an X-ray CT apparatus or an MRI apparatus, a CPU usually controls various devices up to data collection, image reconstruction processing based on collected data, and reconstruction of reconstructed images. Controls all processes such as digital processing. Then, the image data to be displayed is sent to the image display circuit and displayed on a CRT display device, a liquid crystal display device or the like. By displaying a cursor on the displayed image and moving the position of the cursor with a coordinate input device such as a mouse, various operations such as setting a region of interest are performed.

Generally, in a digital image processing apparatus including these medical image diagnostic apparatuses, as shown in FIG. 2, each functional portion is shared by each board, and this board is connected to a bus for data and instructions. Is configured. That is, for example, in an X-ray CT apparatus, a CPU is attached to the bus 10.
The substrate 11 and the image display substrate 12 are connected to each other, and further, the gantry controller substrate 13, the X-ray controller substrate 14 (a bed controller substrate (not shown), an image reconstruction processing substrate), and other substrates are connected. An image display device 15 such as a CRT display device or a liquid crystal display device is connected to the image display substrate 12. When using a plurality of image display devices 15, a plurality of image display substrates 12 are connected to the bus 10, and the image display devices 15 are connected to each of the image display substrates 12.

A cursor 16 is displayed on the screen of the image display device 15.
The mouse 17 (or a coordinate input device such as a trackball) is used, for example, in order to display and to perform an operation such as setting a region of interest. Conventionally, the mouse 17 is connected to the CPU board 11,
Is sent, the CPU board 11 calculates the coordinates of the position where the cursor is displayed from this movement quantity, sends a command to the image display board 12 via the bus, and sends the command to the image display device 15. The cursor 16 displayed on the screen is moved.

When a plurality of image display devices 15 and a plurality of image display substrates 12 are provided, the mouse 17 is largely moved so that the cursor 16 moves from the screen of the image display device 15 to the screen of another image display device 15. The CPU board 11 gives a command to the plurality of image display boards 12 in order to move.

[0006]

However, in the related art, since the CPU board bears the load of processing / controlling the cursor movement by the mouse, there is a problem that other processing capability is reduced.

In view of the above, the present invention releases the control function of the cursor movement display by the mouse from the CPU board,
An object of the present invention is to provide a digital image processing apparatus which is improved so as to reduce the load on the CPU substrate and enhance other processing capabilities.

[0008]

In order to achieve the above object, in a digital image processing apparatus according to the present invention,
Bus for data and instruction and CP connected to the bus
A U substrate, an image display substrate connected to the bus, an image display device connected to the image display substrate, a coordinate input device interface circuit mounted on the image display substrate,
A coordinate input device connected to the interface circuit is provided.

An interface circuit for the coordinate input device is provided on the image display substrate, and a coordinate input device such as a mouse is connected to the interface circuit. When a mouse or the like is operated, the operation amount is sent to the interface circuit, the interface circuit calculates the position of the cursor from the operation amount, and moves the position of the cursor on the display screen. In this way, the control of the cursor movement display of the mouse or the like is performed not by the CPU substrate but by the image display substrate, so the load on the CPU substrate is reduced. The CPU board can concentrate on the original processing other than the cursor movement display control. Since the original processing of the CPU board usually has a considerably large load, the processing efficiency is improved by relieving the burden of the cursor movement display control.

[0010]

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a form in which the present invention is applied to an X-ray CT apparatus. In FIG. 1, a CPU is provided on a bus 10 for data and instructions.
The substrate 11 and the image display substrate 12 are connected. Further, the bus 10 includes a gantry controller board 13, X
A line controller board 14, or a bed controller board (not shown), an board such as an image reconstruction processing board, or the like is further connected. An image display device 15 such as a CRT display device or a liquid crystal display device is connected to the image display substrate 12.
When using the plurality of image display devices 15, the plurality of image display substrates 12 are connected to the bus 10, and the image display devices 15 are connected to each of the image display substrates 12. Each of these image display boards 12 has a mouse interface circuit 1
8 is mounted.

A cursor 16 is displayed on the screen of the image display device 15 for instructing and setting the region of interest. A mouse 17 (or a coordinate input device such as a trackball) is used to move the cursor 16 on the screen and perform operations such as setting a region of interest. This mouse 17 is connected to the mouse interface circuit 18 of the image display board 12, and when a signal indicating the amount of movement of the mouse 17 is sent, the mouse interface circuit 18 coordinates from this amount of movement to the position where the cursor 16 is displayed. To calculate. Based on this, the image display board 12 moves the cursor 16 displayed on the screen of the image display device 15.

The display position of the cursor 16 after this movement is
When the mouse 17 is outside the range of the screens of the image display board 12 and the image display device 15 to which the mouse 17 is connected, the image display board 12 erases the cursor 16 from the screen of the image display device 15 connected thereto. Further, a cursor display command is given to the other image display board 12 via the bus 10 to display the cursor 16 at the calculated position on the screen of the image display device 15 connected to the image display board 12.

Therefore, the CPU board 11 is a mouse 17
It is released from the cursor movement display control of calculating the cursor position in response to a signal from and generating a display command, and can concentrate on the original processing. This CPU board 1
In the case of the X-ray CT apparatus, the original processing of No. 1 is usually to give a command to the gantry controller board 13 or the X-ray controller board 14 to perform scan control in the gantry, X-ray condition control, exposure timing control. And so on. Furthermore, the bed (not shown) is controlled, and the subject (patient)
Of the X-ray detector, controlling the acquisition of data from the detection signals from the X-ray detector of the gantry, and controlling the image reconstruction process from the acquired data. Therefore, the processing that the CPU board 11 should originally perform imposes a considerable load, and therefore, the release from the cursor movement display control as described above is great for improving the efficiency.

On the other hand, the image display board 12 also takes charge of mouse control and cursor movement display control, increasing the processing load, but the processing load on the image display board 12 is originally the CPU board 11. Since the load is lighter than that of, the load on the CPU substrate 11 is reduced as a whole, which leads to an improvement in efficiency.

Although the X-ray CT apparatus has been described above, it is needless to say that the present invention can be applied to a digital image processing apparatus of an MRI apparatus or other medical image diagnostic apparatus.

[0016]

As described above, according to the digital image processing apparatus of the present invention, the interface circuit of the coordinate input device is provided on the image display board, and the coordinate input device such as a mouse is connected to the interface circuit to connect the image display board. Since the cursor movement display control is performed in (1), it is possible to reduce the load on the CPU board and improve the processing capacity as a whole.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a block diagram of a conventional example.

[Explanation of symbols]

 10 bus for data and command 11 CPU board 12 image display board 13 gantry controller board 14 X-ray controller board 15 image display device 16 cursor 17 mouse 18 mouse interface circuit

Claims (1)

[Claims] 1. A bus for data and instructions, a CPU board connected to the bus, an image display board connected to the bus, and an image display device connected to the image display board.
A digital image processing device comprising: a coordinate input device interface circuit mounted on the image display board; and a coordinate input device connected to the interface circuit.