JP2001161685A - Method of image display and ultrasonic diagnosis apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of image display and an ultrasonic diagnosis apparatus capable of displaying images of both scrolling display type and moving-bar display type clearly. SOLUTION: An M/D mode image of the scrolling interlacing type is non- interlaced by an imaging system field complementary part 304 and the discrepancy of images between odd-even lines is corrected by an imaging system inverse scrolling part 307. The time-base graphics of the scrolling interlacing type is non-interlaced by a field/line complementary part 305, and the discrepancy of images between odd-even lines caused by the scrolling is corrected by a time-base inverse scrolling part 308. On the other hand, in case of the moving bar display type, an M/D mode image of the still interlacing type and the time-base graphics are non-interlaced by the imaging system field complementary part 304, and a moving moving-bar is non-interlaced by the field/line complementary part 304.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display method and an ultrasonic diagnostic apparatus, and more particularly, to an image display method and an ultrasonic diagnostic method capable of displaying both scroll display format and moving bar display format in an easily viewable manner. Related to the device.

[0002]

2. Description of the Related Art In a conventional ultrasonic diagnostic apparatus, a screen of one frame is composed of two fields by interlaced scanning in accordance with a television system, and an image is formed at 30 or 25 frames per second. Output. However, since the interlacing method causes flickering and deteriorates the effective resolution in the vertical direction, the non-interlacing method of sequentially scanning at twice the speed and displaying at 60 frames per second or 50 frames per second has come to be used. I have.

[0003] When converting the interlace method to the non-interlace method, there are two conversion methods, a line interpolation method and a field interpolation method. FIG. 9 is an explanatory diagram of the line interpolation method. In the line interpolation method, a line obtained by averaging one or both of vertically adjacent lines in the current field is inserted between the vertically adjacent lines. In the example of FIG. 9, the line L1 above the vertically adjacent lines L1 and L3 in the current field is
Line 3 is inserted between lines 3. FIG. 10 is an explanatory diagram of the field interpolation method. In the field interpolation method, a line of the immediately preceding field corresponding to a line between vertically adjacent lines in the current field is inserted between the vertically adjacent lines. In the example of FIG. 10, the line L2 of the immediately preceding field FO_E corresponding to the line between the vertically adjacent lines L1 and L3 in the current field F1_O is inserted as a line L2 between the lines L1 and L3. In the conventional ultrasonic diagnostic apparatus, a field interpolation method capable of substantially improving the vertical resolution is employed.

In some cases, an ultrasonic diagnostic apparatus displays an M-mode image or time-axis graphics (a biological signal waveform such as an electrocardiographic waveform) in a scroll display format. As shown in FIG. 11, when the field interpolation method is applied in the case of the scroll display format, the M mode image and the time axis graphics move from the immediately preceding field to the current field by the scroll amount δ corresponding to the inter-field time. On the screen after conversion, the odd-numbered lines L1, L3,
, And even-numbered lines L2, L4,..., Cause a horizontal positional shift, and the jaggedness is noticeable or the display is like a double copy. In order to prevent this, at least one of the line of the current field and the line of the immediately preceding field is relatively corrected and scrolled by the time between the fields on the converted screen. In the example of FIG. 12, the line of the current field is scrolled backward by the scroll amount δ for the time between fields. In the example of Japanese Patent Application Laid-Open No. 9-140712, the line of the immediately preceding field is further scrolled forward by the scroll amount δ corresponding to the inter-field time.

FIG. 13 is a schematic block diagram showing an example of a conventional ultrasonic diagnostic apparatus. This ultrasonic diagnostic apparatus 500
Is an ultrasonic probe 1, a transmission / reception unit 2, a B / M / D (Doppler) mode processing unit 3, a DSC (digital scan converter) 4, an interlace-non-interlace conversion unit 200, a display processing unit 210 and a CRT 211. The DSC 4 receives B / M / D mode image data, time axis graphics data, moving bar graphics data, and X
A part or all of the Y coordinate system data is generated and sent to the interlace-non-interlace conversion unit 300.

FIG. 14 is a block diagram of a main part of the ultrasonic diagnostic apparatus 500. The interlaced B / M / D mode image data sent from the DSC 4 to the interlaced-non-interlaced converter 200 is field-interpolated by the image-based field interpolator 201, and the non-interlaced B / M / D mode image Converted to data. The image-based reverse scroll unit 202 converts a line in the non-interlaced B / M / D mode image data, which is a line corresponding to the line of the current field of the interlaced B / M / D mode image data, into a field. The reverse scroll is performed by the scroll amount δ for the time interval. The reverse scroll amount is controlled by the scroll controller 208. The image-based reverse scrolling switch 203 is, as shown by a solid line, during the period when the M / D mode image data in the scroll display format is sent from the DSC 4 to the interlace-non-interlace converter 200, as shown by a solid line. Is selected, and in the other periods, the image-based field interpolation unit 201 is selected as indicated by a broken line, and their outputs are combined by the synthesis unit 209.
Send to This selection is made by the scroll controller 208
Is controlled by

The interlaced time-axis graphics data sent from the DSC 4 is field-interpolated by the time-axis field interpolator 205 and is converted to non-interlaced time-axis graphics data. The time-axis reverse scrolling unit 207 scrolls the line in the non-interlace time-axis graphics data corresponding to the current field line of the interlaced time-axis graphics data for the inter-field time. Reverse scroll by the amount δ. The reverse scroll amount is controlled by the scroll controller 208. The time axis system reverse scroll presence / absence changeover switch 204 is used to switch the time axis system graphics data in the scroll display format from the DSC 4 to the interlace mode.
During the period of time being sent to the non-interlace conversion section 200, the time axis system reverse scroll section 207 is indicated by a solid line.
Is selected, and during the other periods, the time axis system field interpolation unit 205 is selected as indicated by a broken line, and the output thereof is sent to the synthesis unit 209. This selection is controlled by the scroll controller 208.

Further, interlaced XY coordinate system graphics data such as graduations and characters sent from the DSC 4 is field-interpolated by an XY coordinate system field interpolator 206 and converted into non-interlaced XY coordinate system graphics data. The data is sent to the combining unit 209.

A synthesizing unit 209 synthesizes the output of the image type reverse scrolling presence / absence switch 203, the output of the time axis type reverse scrolling presence / absence switch 204, and the output of the XY coordinate system field interpolation unit 206. Display processing unit 2
10 generates a display signal. The CRT 211 displays a B / M / D mode image, time axis graphics, and XY coordinate graphics on the screen. The scroll controller 208, based on the timing signal indicating the scroll display area sent from the DSC 4 and the value of the reverse scroll amount, the image reverse scroll unit 202, the image reverse scroll presence / absence switch 203, the time axis reverse The scroll unit 207 and the time axis system reverse scroll presence / absence changeover switch 204 are controlled.

FIG. 15 is an example of a screen of the CRT 211.
The B-mode image Gb and the XY coordinate system graphics Gxy are displayed in a static display format, and the M-mode image Gm and the time axis graphics Gt are displayed in a scroll display format.

[0011]

A moving bar display format is known as a display format different from the scroll display format. FIG. 16 is an explanatory diagram of a moving bar display format. In this moving bar display format, as shown in FIGS. 16A to 16F, the moving bar mb moves the screen from left to right at a constant speed, and immediately returns to the left end when reaching the right end of the screen. And moving the screen from left to right again. Then, the screen portion passing by the moving bar mb is updated to the latest image. However, the conventional ultrasonic diagnostic apparatus 500 shown in FIGS. 13 and 14 has a problem that the moving bar display format cannot be used. That is, in the conventional ultrasonic diagnostic apparatus 500, the scroll display is not performed in the moving bar display format, so that the reverse scroll units 202 and 207 are bypassed and the field interpolation units 201, 205 and 20 are bypassed.
6, only field interpolation is performed. However, when the moving bar graphic data is field-interpolated, as shown in FIG. 17, the moving bar mb moves by the moving amount Δ for the inter-field time from the immediately preceding field to the current field, so that the odd-numbered line and the even-numbered line are moved. There is a problem in that a horizontal position shift occurs at the number line, the moving bar is conspicuous, or the moving bar is displayed like a double copy, and the screen becomes difficult to see. Therefore, an object of the present invention is to provide an image display method and an ultrasonic diagnostic apparatus capable of displaying a screen in an easily viewable manner in both a scroll display format and a moving bar display format.

[0012]

According to a first aspect, the present invention converts an interlaced image into a non-interlaced image and displays the image in a display format selected from a scroll display format and a moving bar display format. An image display method for displaying, wherein when a scroll display format is selected, a line of an immediately preceding field corresponding to a line between vertically adjacent lines in a current field of an interlaced image is set to the vertically adjacent lines. A moving bar display format, which is converted into a non-interlaced image by inserting and inserting at least one of the line of the current field and the line of the immediately preceding field relative to each other by a time corresponding to the time between the fields; Is selected, the current feed of the interlaced image is By inserting the line of the immediately preceding field corresponding to the line between the vertically adjacent lines between the vertically adjacent lines, the image is converted into a non-interlaced image, and the upper and lower lines in the interlaced moving bar graphics field are inserted. A non-interlaced moving bar graphic is converted into a non-interlaced moving bar graphics by inserting one or both of the adjacent lines between the upper and lower adjacent lines, and the non-interlaced image and the non-interlaced moving are converted. Provided is an image display method characterized by combining and displaying bar graphics. In the image display method according to the first aspect, when the scroll display format is selected, the image is subjected to the field interpolation and the correction scroll, so that a high-quality non-interlaced image can be suitably scroll-displayed. On the other hand, when the moving bar display format is selected, non-interlaced high-quality images can be displayed favorably by performing field interpolation on the image, and non-interlaced systems can be suitably displayed by performing field interpolation on the moving bar. The moving bar can be suitably moved and displayed.

According to a second aspect, the present invention provides the image display method according to the first aspect, wherein when a scroll display format is selected and a freeze is instructed, the scroll display format is vertically adjacent to the current field of the interlaced image. By inserting the line of the immediately preceding field corresponding to the line between lines to be inserted between the vertically adjacent lines, the image is converted into a non-interlaced image and displayed, the moving bar display format is selected, and freeze is indicated. If
In the current field of the interlaced image, the line of the immediately preceding field corresponding to the line between the vertically adjacent lines in the current field is inserted between the vertically adjacent lines, thereby converting the image into a non-interlaced image and the interlaced image. In the current field of the moving bar graphics, the line of the immediately preceding field corresponding to the line between the vertically adjacent lines is inserted between the vertically adjacent lines, thereby converting the moving bar graphics into the non-interlaced moving bar graphics. And a non-interlaced moving bar graphics combined and displayed. The image display method according to the second aspect can suitably cope with a case where a freeze is instructed.

According to a third aspect, the present invention is an ultrasonic diagnostic apparatus for converting an interlaced M-mode image into a non-interlaced M-mode image and displaying the converted image.
Display format selection means for switching between a scroll display format and a moving bar display format, and lines vertically adjacent to each other in the current field of the interlaced M-mode image when the scroll display format is selected A line of the immediately preceding field corresponding to an intervening line is inserted between the vertically adjacent lines, and at least one of the line of the current field and the line of the immediately preceding field is relatively corrected and scrolled by the time between the fields. A field interpolating / correcting scroll means for converting to a non-interlaced M-mode image, and a line between vertically adjacent lines in the current field of the interlaced M-mode image when the moving bar display format is selected. The corresponding previous field A field interpolating means for converting a line into a non-interlaced M-mode image by inserting a line between the vertically adjacent lines, and a vertically interlaced moving bar graphics field when a moving bar display format is selected. When a moving bar display format is selected, and a line interpolating unit that converts one or both of the adjacent lines into a non-interlaced moving bar graphic by inserting a line obtained by averaging the lines between the upper and lower adjacent lines, Converted by the field interpolation means to
A combining means for combining the mode image and the moving bar graphics converted by the line interpolating means; and an M mode image converted by the field interpolation / correction scroll means when the scroll display format is selected, and a moving bar display format. And a display unit for displaying a composite image synthesized by the synthesizing unit when is selected. In the ultrasonic diagnostic apparatus according to the third aspect, the image display method according to the first aspect can be suitably implemented. For this reason, it is possible to display both M-mode images in the scroll display format and the moving bar display format in an easily viewable manner.

According to a fourth aspect, the present invention provides the ultrasonic diagnostic apparatus according to the third aspect, wherein a scroll display format is selected and a freeze instruction is given, instead of the field interpolation / correction scroll means. The field correction unit converts the image into a non-interlaced M-mode image, and operates in place of the line interpolating unit when the moving bar display format is selected and freeze is instructed. A second field interpolating means for converting a line of the immediately preceding field corresponding to a line between vertically adjacent lines in the above field into a non-interlaced moving bar graphic by inserting the line between the vertically adjacent lines. The moving bar display format is selected. An ultrasound diagnostic apparatus, wherein, when a freeze is instructed, the combining means combines the M-mode image converted by the field interpolation means and the moving bar graphics converted by the second field interpolation means. I will provide a. In the ultrasonic diagnostic apparatus according to the fourth aspect, the image display method according to the second aspect can be suitably implemented. Therefore, it is possible to appropriately cope with a case where a freeze is instructed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the embodiments shown in the drawings. Note that the present invention is not limited by this.

-First Embodiment- FIG. 1 is a schematic block diagram showing an ultrasonic diagnostic apparatus according to a first embodiment of the present invention. This ultrasonic diagnostic apparatus 1
00 is an ultrasonic probe 1, a transmitting / receiving unit 2, a B / M / D
(Doppler) mode processing unit 3, DSC (digital scan converter) 4, interlace-non-interlace conversion unit 300, display processing unit 312, CRT 31
3 is provided. The DSC 4 generates part or all of B / M / D mode image data, time axis graphics data, moving bar graphics data, and XY coordinate system data in accordance with an instruction from the operator, and performs interlace-noninterlace conversion. Send to section 300.

FIG. 2 is a block diagram of a main part of the ultrasonic diagnostic apparatus 100. The interlaced B / M / D (Doppler) mode image data sent from the DSC 4 includes the interlaced time-axis graphics data sent from the DSC 4 and the input combining unit 301.
Synthesized by The image input switch 302 is used to display M / D mode image data in the moving bar display format.
4 to interlace-non-interlace converter 30
0, the input synthesizing section 301 is selected as shown by the solid line, and the interlace B / M / D sent from the DSC 4 as shown by the broken line during the other periods. The mode image data is selected, and the selected data is sent to the image-based field interpolation unit 304. This selection is controlled by the scroll controller 314.
The image-based field interpolation unit 304 performs field interpolation on the selected interlaced data,
Convert to non-interlaced data. The image-based reverse scroll unit 307 reversely scrolls a line in the non-interlace data, which is a line corresponding to a current field line of the interlace data, by a scroll amount δ corresponding to an inter-field time. The trimming is performed so that the end of each line that has become irregular due to the above is not shown. The reverse scroll amount is controlled by a scroll controller 314. Image reverse scroll presence / absence switch 3
09, the image-based reverse scroll unit 307 is selected as shown by a broken line during the period when the M / D mode image data in the scroll display format is being sent from the DSC 4 to the interlace-non-interlace conversion unit 300, and During the period, as shown by the solid line, the image-based field interpolation unit 3
04, and sends their outputs to the synthesis unit 311.
This selection is controlled by the scroll controller 314.

The interlaced time axis graphics data sent from the DSC 4 is input to the input synthesizing unit 301 and the graphics input switch 303. The interlaced moving bar graphics data sent from the DSC 4 is stored in the graphics input switch 303.
Is input to The graphics-based input changeover switch 303 controls the interlacing type moving bar as shown by the solid line during the period when the M / D mode image data in the moving bar display format is sent from the DSC 4 to the interlace-non-interlace converter 300. The graphics data is selected, and in the other periods, the interlaced time axis graphics data sent from the DSC 4 is selected as indicated by a broken line, and the selected graphics data is converted into a field / line interpolator. 30
Send to 5. This selection is made by the scroll controller 31
4. The field / line interpolation unit 3
In the period 05, the M / D mode image data in the moving bar display format is sent from the DSC 4 to the interlaced-non-interlaced converter 300, and the selected interlaced graphics data is subjected to line interpolation. During periods other than the above, field interpolation is performed on the selected interlaced graphics data to convert the data into non-interlaced graphics data. The time axis system reverse scroll unit 308
A line corresponding to a line of a current field of the interlaced graphics data, and a line in the non-interlaced graphics data is scrolled backward by a scroll amount δ corresponding to an inter-field time, and each line becomes irregular. Trim to hide the end of the line. The reverse scroll amount is controlled by a scroll controller 314. The time axis system reverse scroll presence / absence switch 310 is
Time axis graphics data in scroll display format is D
During the period from SC4 to the interlace-non-interlace conversion unit 300, the time axis system reverse scroll unit 308 is selected as shown by a broken line, and in other periods, the time axis system scrolling unit 308 is shown by a solid line. Interpolator 3
05, and sends their outputs to the synthesis unit 311.
This selection is controlled by the scroll controller 314.

Further, the interlaced XY coordinate system graphics data such as graduations and characters sent from the DSC 4 is field-interpolated by the XY coordinate system field interpolator 306 and converted into non-interlaced XY coordinate system graphics data. Then, it is sent to the combining unit 311.

The synthesizing unit 311 synthesizes the output of the image-based reverse scrolling presence / absence switch 309, the output of the time axis system reverse scrolling presence / absence switch 310, and the output of the XY coordinate system field interpolation unit 306. Display processing unit 3
12 generates a display signal. The CRT 313 displays a B / M / D mode image, time axis graphics, and XY coordinate graphics on the screen. The M / D mode image display format selection unit 320 controls the M / D mode
The scroll controller 31 sends an M / D mode image display format command for specifying whether the display format of the D mode image is the scroll display format or the moving bar display format.
4 and DSC4. The DSC 4 generates interlaced B / M / D mode image data, moving bar graphics data, and the like based on the M / D mode image display format command. The scroll controller 314 controls the image input switch 302 and the graphics system based on the timing signal indicating the scroll display area, the value of the reverse scroll amount, and the M / D mode image display format command sent from the DSC 4. Input changeover switch 303, image system reverse scroll unit 3
07, an image reverse scroll presence / absence switch 309, a time axis reverse scroll section 308, and a time axis reverse scroll presence / absence switch 310.

FIG. 3 shows the display format of the M / D mode image and the time axis graphics in the ultrasonic diagnostic apparatus 100 and the changeover switches 302, 303, 309, 31.
0 switching state and the field / line interpolation unit 30
5 is a list showing the relationship between the interpolation methods of FIG.

Next, the operation of the ultrasonic diagnostic apparatus 100 will be described. (1) The operation for displaying the M / D mode image and the time axis graphics in the scroll display format is as follows. In FIG. 2, the image input switch 302 is set to a broken line, and the graphics input switch 303 is turned on.
Is set to the state shown by the broken line, and the field / line interpolation unit 305 causes the field interpolation to be performed. The image-based reverse scrolling presence / absence changeover switch 309 sets a broken line state during a period when the M / D mode image data is sent from the DSC 4 to the interlace-non-interlace conversion unit 300, and sets a solid line state during other periods. . Further, the time axis system reverse scroll presence / absence changeover switch 310 is set to a state indicated by a broken line during a period when the time axis system graphics data is sent from the DSC 4 to the interlace-non-interlace conversion unit 300, and is set to a state indicated by a solid line during other periods. .

FIG. 4 shows the image-based field interpolation unit 30.
FIG. 4 is an explanatory diagram of a field interpolation operation performed by a field / line interpolation unit 305 and an XY coordinate system field interpolation unit 306. As shown in FIG. 4A, the interpolation units 304, 305, and 306 write the data of each line of the interlaced odd field to the frame memory, and when h is the number of pixels per line, The start addresses are 0, 2h, 4h,... When writing data of each line of the even field to the frame memory, the start addresses are h, 3h, 5h,.
And On the other hand, as shown in FIG. 4B, when the data of each line of the non-interlaced frame is read from the frame memory, the start addresses are 0, h, 2
h, 3h, ... As described above, the field interpolation is performed, and a screen display example in this state is as shown in FIG.

(2) The operation for displaying the M / D mode image and the time axis graphics in the moving bar display format is as follows. In FIG. 2, the image input switch 302 is set to a solid line, the graphics input switch 303 is set to a solid line, and the field / line interpolation unit 305 performs line interpolation. Further, the image reverse scroll presence / absence switch 309 is set to the state indicated by the solid line. Further, the time axis system reverse scroll presence / absence changeover switch 310 is set to a state indicated by a solid line.

FIG. 5 shows the field / line interpolator 3
It is explanatory drawing of the operation | movement of the line interpolation performed in 05. FIG.
(A), when writing the data of each line of each field of the interlaced system into the frame memory, the field / line interpolation unit 305 sets the start address when h is the number of pixels per line. 0,
h, 2h, 3h, ... On the other hand, as shown in FIG. 5B, when data of each line of a non-interlaced frame is read from the frame memory, the start addresses are 0, 0, h, h, 2h, 2h, 3h, 3h,. And Line interpolation is performed as described above, and an example of screen display in this state is as shown in FIG.

In the example of the screen display shown in FIG.
b, M-mode image GM, time axis graphics Gt, and XY coordinate system graphics Gxy are displayed with high image quality by field interpolation. The moving bar mb is
It is displayed without jaggedness by line interpolation.

(3) The operation during freeze (still) is as follows. In FIG. 2, the image input switch 302 is set to a solid line, and the graphics input switch
03 is a broken line, and the field / line interpolation unit 30
In step 5, field interpolation is performed. Further, the image reverse scroll presence / absence switch 309 is set to the state indicated by the solid line. Further, the time axis system reverse scroll presence / absence changeover switch 310 is set to a state indicated by a solid line. In this state, the B-mode images Gb,
The M mode image GM, the time axis graphics Gt, the XY coordinate system graphics Gxy, and the moving bar mb are displayed with high image quality by field interpolation.

According to the ultrasonic diagnostic apparatus 100 described above, the scrolling display format can display the scrolling M / D mode image with high image quality without jaggedness, and the moving bar display format can display the moving moving bar with high image quality without jaggedness. Can be displayed with. In other words, both the scroll display format and the moving bar display format can be easily displayed.

Second Embodiment FIG. 7 is a main block diagram showing an ultrasonic diagnostic apparatus according to a second embodiment of the present invention. The same components as those of the ultrasonic diagnostic apparatus 100 according to the first embodiment include:
The same reference numerals are given. This ultrasonic diagnostic apparatus 101
Extracts each data from superimposed graphics data in which time axis system graphics data, moving bar graphics data, and XY coordinate system graphics data are superimposed, distributes the data from the output TD to the input synthesis unit 301,
The data is distributed from the output BD to the field / line interpolation unit 305, and the output XD is distributed to the XY coordinate system field interpolation unit 3
The data decoder 501 for distributing data to the data 06 is provided. Also, the graphics input switch 303 in FIG. 1 is omitted. Other configurations are the same as those of the ultrasonic diagnostic apparatus 100 according to the first embodiment.

FIG. 8 shows the display format of the M / D mode image and the time axis graphics in the ultrasonic diagnostic apparatus 101, the switching states of the switches 302, 309 and 310, the contents of the output of the data decoder 501 and 4 is a table showing a relationship of an interpolation method of the field / line interpolation unit 305.

The operation of the data decoder 501 is as follows. (1) Scroll Display Format and Freeze Time The data decoder 501 does not output significant data from the output TD (zero output or negligible data is output from the viewpoint of data processing), and outputs time-based graphics from the output BD. Data is output, and XY coordinate system graphics data is output from the output XD. (2) At the time of moving bar display format The data decoder 501 outputs time axis graphics data from the output TD, outputs moving bar graphics data from the output BD, and outputs XY coordinate system graphics data from the output XD.

Operations other than the data decoder 501 are as follows.
This is the same as in the first embodiment.

According to the ultrasonic diagnostic apparatus 101 described above, 3
Since each data is extracted and distributed from the superimposed graphics data on which various types of graphics data are superimposed, the number of input signals can be reduced.

-Other Embodiments- (1) In the ultrasonic diagnostic apparatus 100, moving bar graphics data is superimposed on time axis graphics data and transmitted, and the input synthesizing section 301 and the graphics input switch 303 are switched. A configuration in which the two are separated immediately before may be employed. (2) The image field interpolator 304 and the time axis field interpolator 306 may be shared by one field interpolator. (3) The reverse scroll unit 307 and the reverse scroll unit 308 may be shared by one reverse scroll unit.

[0036]

According to the image display method and the ultrasonic diagnostic apparatus of the present invention, the scroll display format can display the scrolling image with high quality without jaggedness, and the moving bar display format can display the moving moving bar without jaggedness. It can be displayed with high image quality. That is, an easy-to-view screen can be displayed in both the scroll display format and the moving bar display format.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram illustrating an ultrasonic diagnostic apparatus according to a first embodiment of the present invention.

FIG. 2 is a main block diagram showing the ultrasonic diagnostic apparatus according to the first embodiment of the present invention.

FIG. 3 shows the relationship between the display format of the M / D mode image and the time axis graphics, the switching state of the changeover switch, and the interpolation method of the field / line interpolation unit in the ultrasonic diagnostic apparatus according to the first embodiment of the present invention. FIG.

FIG. 4 is a memory space diagram illustrating an operation of field interpolation.

FIG. 5 is a memory space diagram illustrating an operation of line interpolation.

FIG. 6 is an illustration of a display screen in a moving bar display format.

FIG. 7 is a main block diagram showing an ultrasonic diagnostic apparatus according to a second embodiment of the present invention.

FIG. 8 is a diagram showing the display format of M / D mode images and time axis graphics, the switching state of a changeover switch, the contents of output from a data decoder, and the fields / lines in an ultrasonic diagnostic apparatus according to a second embodiment of the present invention 6 is a table illustrating a relationship between interpolation methods of an interpolation unit.

FIG. 9 is a diagram illustrating the principle of a line interpolation method.

FIG. 10 is a diagram illustrating the principle of a field interpolation method.

FIG. 11 is an explanatory diagram of a problem caused by performing field interpolation on a scrolling image.

FIG. 12 is an explanatory diagram of a method for improving the problem in FIG. 11;

FIG. 13 is a schematic block diagram illustrating an example of a conventional ultrasonic diagnostic apparatus.

FIG. 14 is a main block diagram showing an example of a conventional ultrasonic diagnostic apparatus.

FIG. 15 is a view showing an example of a display screen in a scroll display format.

FIG. 16 is an explanatory diagram of a moving bar display format.

FIG. 17 is an explanatory diagram of a problem when a moving bar display format is displayed by the ultrasonic diagnostic apparatuses of FIGS. 13 and 14;

[Explanation of symbols]

100, 101 Ultrasound diagnostic apparatus 300 Interlace-non-interlace conversion unit 301 Input synthesis unit 302 Image input changeover switch 303 Graphics system input changeover switch 304 Image system field interpolation unit 305 Field / line interpolation unit 306 XY coordinate system field interpolation unit 307 Image reverse scroll section 308 Time axis reverse scroll section 309 Image reverse scroll presence / absence switch 310 Graphics reverse scroll presence / absence switch 311 Synthesis section 312 Display processing section 313 CRT 314 Scroll controller 320 M / D mode image display format selection Section 501 data decoder

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4C301 EE07 JC02 JC20 KK40 5B057 AA07 BA05 CF03 5C054 CA08 EA05 EH05 FA01 FE01 FE04 FE17 HA12 5C082 AA00 BA12 BA27 BC06 BC07 BC19 CA22 CA55 CA72 CA84 MM10

Claims (10)

[Claims] 1. An image display method for converting an interlaced image into a non-interlaced image and displaying the image in a display format selected from a scroll display format and a moving bar display format, wherein the scroll display format is selected. In this case, the line of the immediately preceding field corresponding to the line between the vertically adjacent lines in the current field of the interlaced image is inserted between the vertically adjacent lines, and the line of the current field and the immediately preceding field are inserted. Is converted to a non-interlaced image by relatively scrolling at least one of the lines of the time corresponding to the time between fields, and is displayed.If the moving bar display format is selected, the current field of the interlaced image is displayed. Line between the vertically adjacent lines By inserting the line of the field immediately before the line between the vertically adjacent lines, the image is converted into a non-interlaced image, and one or both of the vertically adjacent lines in the interlaced moving bar graphics field are averaged. The inserted line is inserted between the vertically adjacent lines to convert it to non-interlaced moving bar graphics, and the non-interlaced image and the non-interlaced moving bar graphics are combined and displayed. Image display method. 2. The image display method according to claim 1, wherein a scroll display format is selected and a freeze instruction is given, which corresponds to a line between vertically adjacent lines in a current field of an interlaced image. By inserting the line of the immediately preceding field between the vertically adjacent lines, the image is converted into a non-interlaced image and displayed. If the moving bar display format is selected and freeze is instructed, the interlaced image is displayed. In the current field, the line of the immediately preceding field corresponding to the line between the vertically adjacent lines is inserted between the vertically adjacent lines to convert the image into a non-interlaced image and the moving bar graphics of the interlaced method. The line between lines that are vertically adjacent in the current field. By inserting the line of the field immediately before the line between the vertically adjacent lines into a non-interlaced moving bar graphics, and combining the non-interlaced image and the non-interlaced moving bar graphics. An image display method comprising: displaying an image; 3. An ultrasonic diagnostic apparatus for converting an interlaced M-mode image into a non-interlaced M-mode image and displaying the converted image, wherein a display format of a scroll display format or a moving bar display format is displayed. And a display format selecting means for switching between the immediately preceding and succeeding lines of the immediately preceding field corresponding to the lines between the vertically adjacent lines in the current field of the interlaced M-mode image when the scroll display format is selected. A field interpolation / correction scroll which is inserted between lines and is converted into a non-interlaced M-mode image by relatively correcting and scrolling at least one of the line of the current field and the line of the immediately preceding field by the time between the fields. Means and moving bar display format Is selected, the line of the immediately preceding field corresponding to the line between the vertically adjacent lines in the current field of the interlaced M-mode image is inserted between the vertically adjacent lines, whereby the non-interlaced M mode image is inserted. A field interpolating means for converting to an M-mode image, and a moving bar graphics field in which interlaced moving bar graphics fields are used to adjoin one of the vertically adjacent lines or a line obtained by averaging both of the lines. Line interpolating means for converting into a non-interlaced moving bar graphic by inserting between moving lines, and an M mode image converted by the field interpolating means when the moving bar display format is selected, and conversion by the line interpolating means Moving And a combining means for combining the graphics and the M-mode image converted by the field interpolation / correction scrolling means when the scroll display format is selected, and combining by the combining means when the moving bar display format is selected. An ultrasonic diagnostic apparatus comprising: display means for displaying a composite image. 4. The ultrasonic diagnostic apparatus according to claim 3, wherein when a scroll display format is selected and a freeze is instructed, a non-interlace method is used by said field correction means instead of said field interpolation / correction scroll means. When the moving bar display format is selected and the freeze is instructed, the moving bar display format is operated instead of the line interpolating means, and the lines vertically adjacent to each other in the current field of the interlaced moving bar graphics are converted. A second field interpolating means for converting the line of the immediately preceding field corresponding to the intervening line into the non-interlaced moving bar graphics by inserting the line between the vertically adjacent lines, and the moving bar display format is selected. Was instructed to freeze The case, the combining means,
An ultrasonic diagnostic apparatus comprising: combining an M-mode image converted by the field interpolation means and moving bar graphics converted by the second field interpolation means. 5. The ultrasonic diagnostic apparatus according to claim 4, wherein when a scroll display format is selected, immediately before a line corresponding to a line between vertically adjacent lines in a current field of interlaced time axis graphics. Of the current field and the line of the immediately preceding field are relatively corrected and scrolled by the time between the fields by inserting the line of the field between the vertically adjacent lines. A second field interpolation / correction scroll unit for converting to a time-axis-based graphics, wherein when the scroll display format is selected,
Input combining means for combining the time axis graphics converted by the field interpolation / correction scroll means of the above, and for combining the interlaced M-mode image and the interlaced time axis graphics when the moving bar display format is selected. And when the moving bar display format is selected, the field interpolation means includes a line between vertically adjacent lines in the current field of the combined image of the interlaced M-mode image and the interlaced time-axis graphics. An ultrasonic diagnostic apparatus, wherein a line of a field immediately before a line corresponding to a line is inserted between the vertically adjacent lines to convert the image into a non-interlaced composite image. 6. The ultrasonic diagnostic apparatus according to claim 3, wherein an immediately preceding field corresponding to a line between vertically adjacent lines in a current field of interlaced XY coordinate system graphics. Is inserted between the vertically adjacent lines to form a non-interlaced X
Ultrasound diagnostic apparatus, comprising: third field interpolation means for converting into Y coordinate system graphics, wherein the synthesis means also synthesizes XY coordinate system graphics converted by the third field interpolation means. . 7. The ultrasonic diagnostic apparatus according to claim 3, wherein the M mode image is replaced with a Doppler mode image or an M mode image and a Doppler mode image. Ultrasound diagnostic device characterized by the following. 8. The ultrasonic diagnostic apparatus according to claim 3, wherein the moving bar, the time axis system graphics, or the XY coordinate system graphics is obtained from superimposed graphics data including two or more types of graphics data. An ultrasonic diagnostic apparatus comprising data decoder means for separating data. 9. The ultrasonic diagnostic apparatus according to claim 3, wherein said field interpolation means and said third field interpolation means are shared by one field interpolation means. Ultrasonic diagnostic equipment. 10. The ultrasonic diagnostic apparatus according to claim 3, wherein said field interpolation / correction scroll means and said second field interpolation / correction scroll means are one field interpolation / correction. An ultrasonic diagnostic apparatus, wherein the ultrasonic diagnostic apparatus is also used as scroll means.