JPS62145179A - Picture recording system for ultrasonic diagnostic device - Google Patents

Abstract

PURPOSE:To bring an image of an ultrasonic diagnosis with high definition, to picture recording by using a VTR for a general television, by providing a limiting function of a picture recording area for thinning out a scanning line, and narrowing a scanning width. CONSTITUTION:A diagnostic image processing part 2 generates plural image information, based on a reflecting signal from an ultrasonic transducer, and writes it in an image memory 3. A high definition television display 4 reads out and displays information of an ultrasonic diagnostic image which is written in the image memory 3. A general television use interface 5 extracts with regard to an average value of one field or both fields of an even or odd field which is determined in advance from in image information which is read out of the image memory 3, and also only information in an extraction area which is designated at every scanning line, generates a general television use frame, and outputs its video signal to a general television use VTR 6. The extraction area is designated by using a cursor.

Description

[Detailed description of the invention] 〔overview〕 In ultrasonic diagnostic equipment using high-definition television.

The scanning lines of the output image are thinned out and sections within the scanning lines are extracted to enable recording on a commercially available VTR for general television.

C. Field of Industrial Application] The present invention relates to a recording method in an ultrasonic diagnostic apparatus, and more particularly to a conversion method for recording a portion of an output image for high-definition television on a recording device for television (VTR).

[Conventional technology]

Recent ultrasonic diagnostic equipment is a single device with B mode, M
There are many multi-functional models that can create various ultrasound diagnostic images such as mode and D mode, and it is now possible to use images in two appropriate modes depending on the condition of the diagnostic target. There is.

By the way, by making it possible to observe diagnostic images in multiple modes at the same time, such as B mode and M mode, or B mode and D mode, it is possible to obtain multifaceted information about the state of one diagnostic target area. Diagnosis can be made accurately and easily. FIG. 5 shows images of B mode and M mode displayed side by side on a display.

However, when attempting to display images in such a plurality of modes in parallel on a display, it is necessary to limit the size of each image, resulting in the inconvenience that it becomes considerably difficult to view.

Therefore, some devices attempt to solve this problem by using a high-definition television with a large screen size (particularly a large aspect ratio) as a display.

[Problem that the invention seeks to solve]

Conventional ultrasound diagnostic equipment that uses a high-definition television requires a VTR for high-definition television to record ultrasound diagnostic images.
This poses a problem in that the price is significantly higher than that of a VTR for general television, and it is difficult to obtain and maintain.

[Means for solving problems]

The present invention provides an ultrasonic diagnostic apparatus using a high-definition television with functions for thinning out scanning lines and limiting the recording area to narrow the scanning width in order to interface with a part of the television VTR.

Scanning lines are thinned out by selecting only either the even or odd fields that make up the interlaced scanning frame, and the recording area is limited.

This is done by the operator specifying a horizontal area on the display screen with a size of 1/2 or less. This will be explained below using nine drawings.

FIG. 1 is a diagram showing the basic configuration of the present invention.

In FIG. 1, 1 is an ultrasonic diagnostic device, 2 is a diagnostic image processing unit with multiple mode functions, 3 is an image (tortoise memory), 4 is a high-definition television display, 5 is a partial TV VTR interface, and 6 is a Partially represents a TV VTR.

The diagnostic image processing unit 2 is based on a reflected signal from an ultrasonic transducer (not shown).

For example, a plurality of image information such as B mode and M mode are created and written into one image memory 3.

The image memory 3 has a storage capacity corresponding to the number of pixels of a high-definition television screen. The screen of a high-definition television is assumed to have approximately twice the number of scanning lines and twice the resolution in the horizontal direction, and approximately four times the size in terms of the number of pixels, as compared to a general television screen.

The high-definition television display 4 reads and displays information on ultrasonic diagnostic images (for example, B-mode images and M-mode images) written in the 1-image memory 3.

At this time, the general TV VTR interface 5 further calculates the average value of one or both of the predetermined even or odd fields from among the image information read out from the nine image memory 3. For each scanning line, only the information within the specified extraction area is extracted, a general television frame is created, and a portion of the video signal is output to the television VTR 6. The extraction area is
It is specified by the operator using a cursor or the like.

A general television VTR records an input video signal in a conventional manner.

[Effect]

An example of rask pattern conversion based on the configuration of the present invention shown in FIG. 1 will be explained with reference to FIG.

In the figure, 7 is a high-definition television graphic pattern.

8 is a partial TV rask pattern, 9 is an extraction area designation signal, ■, ■, ■, ... is a high-definition television scanning line number, ■
′, ■′, ■′, . . . represent scanning line numbers of general television.

In rask pattern 7.8, the scanning line indicated by the solid line is
■, ■, ..., and ■′, ■′, ■′.

. . . belongs to an even field and is a scanning line ■ shown by a one-dot line.

■, . . . and ■', ■', . . . belong to odd fields.

Some television VTR interfaces 5 shown in FIG. 1 average one or both of the scanning lines of the high-definition television rough pattern 7 that belong to odd-numbered fields or even-numbered fields. , For example, in the example shown in Figure 9, the even numbered fields ■, ■,
Select only the scanning lines ■, . . . and select the scanning lines ■', ■', ■', .
map to.

In the illustrated example, ■−■′, ■−■′, and ■−■′.

...becomes... That is, each scan line of an even field of high definition television is alternately distributed between the scan lines of each even and odd field of general television.

At this time, each scanning line of the high-definition television is gated by the extraction area designation signal 9, and only the image information in the gated range (represented by A) is partially transferred to the scanning line range of the television.

〔Example〕

FIG. 3 shows the configuration of one embodiment of the present invention.

In the figure, 1 is an ultrasonic diagnostic device, 2 is a diagnostic image processing unit, 21 is a B-mode circuit, 22 is an M-mode circuit, 3 is an image memory, 4 is a high-definition television display, and 5 is a partial TV VTR interface.

50 is an extraction area designation circuit, 51 is a timing control circuit,
52 is a gate circuit, 53 is a distribution circuit, 54 is an even numbered field filter, 55 is an odd numbered field buffer, 5
Reference numeral 6 represents an average calculation circuit, 57 represents a video signal conversion circuit, 6 represents a part of a television VTR, 10 represents a display control circuit, and 11 represents a cursor control circuit.

This embodiment is shown embodying the details of the construction shown in FIG. 1, and the same reference numerals are used for elements common to both figures.

The diagnostic image processing unit 2 includes a B-mode circuit and an M-mode circuit (other circuits are omitted for simplicity).
, a B-mode image, that is, a PPI tomographic image of the diagnostic region, and a 2M-mode image, that is, a temporal change image of reflection information in one scanning direction, are respectively created and written in a predetermined area of the one-image memory 3. In the illustrated example, areas are designated so that the M mode image is displayed on the left side of one screen and the B mode image is displayed on the right side.

The display control circuit 10 alternately reads out even-numbered field and odd-numbered field information from the 5-image memory 3 at the frame control timing of the high-definition television display 4, and causes the information to be displayed on the high-definition television display 4.

General TV VTR interface 5 during VTR recording
When activated, the image information read out from the image memory 3 by the 2-display control circuit 10 is simultaneously extracted by a gate circuit in a predetermined portion and written into the even field buffer 54 or the odd field buffer 55 for each field.

The present embodiment is concerned with a system in which the average value of even-numbered fields, C-fields, and odd-numbered fields of high-definition television images is recorded on a VTR.

The even-numbered field buffer 54 and the odd-numbered field buffer 55 function as synchronous buffers to enable asynchronous execution of frame control on the high-definition television side and frame control on the partial television side, and a data holding function for averaging the odd-numbered fields.

The operator looks at the display screen and specifies the horizontal area to be recorded with a cursor. The cursor control circuit 11 has two cursor positions (screen addresses) indicating this area.
is set in the extraction area designation circuit 50.

The timing control circuit 51 identifies frames, fields, and scanning lines based on the vertical synchronization signal and horizontal synchronization signal output from the 1-display control circuit 10, and identifies frames, fields, and scanning lines corresponding to the extraction area set in the extraction area designation circuit 50. A gate signal indicating a section within each scanning line is generated and applied to the gate circuit 52.

The timing control circuit 51 also switches the 1 distribution circuit 53 for each even numbered field and odd numbered field.

Image information of sequential fields extracted by the gate circuit 52 is distributed to an even numbered field buffer 54 and an odd numbered field buffer 55.

In the even numbered field buffer 54, the image information included in the extraction area of each scanning line of the even numbered field is sent to the address supplied from the timing control circuit 51 and stored in order for each scanning line.

Similarly, image information of odd-numbered fields is stored in the odd-numbered field buffer 55 as well.

The buffers 54 and 55 are designed to be able to perform writing and reading simultaneously and alternately.

It is desirable to provide one pair of each.

The average calculation circuit 56 simultaneously reads image information of each corresponding scanning line from the buffers 54 and 55.

The gradation values of each pixel are averaged and supplied to the video signal conversion circuit 57.

The video signal conversion circuit 57 generates vertical and horizontal synchronization signals and scanning line addresses for each field at general television timing, reads out and accesses the buffers 54 and 55, and at the same time inputs image information supplied from the average calculation circuit 56. Generates video signals based on VT for general television
Output to R6.

In the embodiment described above, the even-numbered fields and odd-numbered fields of a high-definition television image are averaged and a portion thereof is output to a television VTR.

By selecting one of the odd-numbered fields up to the even-numbered fields and outputting it to the VTR, the nine circuit configuration can be greatly simplified.

Also, at that time, between successive scanning lines of one of the two selected fields (for example, ■-■ of an even field).

■−■9 etc.) may be averaged.

FIG. 4 is a rask pattern conversion timing diagram of an embodiment using only even-numbered fields of a high-definition television image, and shows fields and scanning lines of a high-definition television image and fields and scanning lines of a general television image. The correspondence between is shown by the arrow.

〔Effect of the invention〕

According to the present invention, images of an ultrasonic diagnostic apparatus using a high-definition television can be transferred to a relatively inexpensive and easily available television V.
Since recording can be performed using TR, the device can be used even more easily.

Furthermore, in the present invention, although the recording area is limited, by changing the extraction area, it is possible to record with virtually no problems.

[Brief explanation of drawings]

FIG. 1 is a basic configuration diagram of the present invention, FIG. 2 is an explanatory diagram showing an example of rask pattern conversion from a high-definition television to a partial television according to the present invention, and FIG. 3 is a configuration of one embodiment of the present invention. figure,
FIG. 4 is an explanatory diagram of the rask pattern conversion timing in an embodiment different from that of FIG. 3, and FIG. 5 is an explanatory diagram showing an example of displaying images in multiple modes. In Figures 1 and 2. 1: Ultrasonic diagnostic device 2: Diagnostic image processing unit 3: Image memory 4: High-definition TV display 5 i-TV VTR interface 6: General TV VTR 7: High-definition TV last pattern 8 General TV last pattern 9: Extraction area specification signal

Claims (1)

[Claims] In an ultrasonic diagnostic apparatus (1) that uses a high-definition television as a display (4), either the odd-numbered fields or the even-numbered fields of the output image, or the average thereof, are It corresponds to both even-numbered fields, and further extracts an arbitrary part of the scanning line of the output image, expands it to the full width of the scanning line of a general TV, and supplies it to the general TV's VTR (6) for recording. Characteristic recording method of ultrasound diagnostic equipment.