JPH0380710U - - Google Patents
Info
- Publication number
- JPH0380710U JPH0380710U JP14166589U JP14166589U JPH0380710U JP H0380710 U JPH0380710 U JP H0380710U JP 14166589 U JP14166589 U JP 14166589U JP 14166589 U JP14166589 U JP 14166589U JP H0380710 U JPH0380710 U JP H0380710U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- pass filter
- type display
- raster scan
- scan type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002604 ultrasonography Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000002059 diagnostic imaging Methods 0.000 description 1
Landscapes
- Ultra Sonic Daignosis Equipment (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Description
第１図はこの考案の一実施例の超音波画像診断
装置のブロツク図、第２図は画面における走査線
の位置とカツトオフ周波数の変化の特性図、第３
図は画面における走査線の位置とカツトオフ周波
数の変化の他の特性図、第４図は可変ローパスフ
イルタとカツトオフ周波数制御部の具体例を示す
ブロツク図、第５図は可変ローパスフイルタとカ
ツトオフ周波数制御部の他の具体例を示すブロツ
ク図、第６図は画面における走査線の位置とカツ
トオフ周波数の対応図、第７図は従来の超音波画
像診断装置のブロツク図、第８図は画面の例示図
、第９図はローパスフイルタの働きを示す説明図
である。
符号の説明、１……超音波画像診断装置、５…
…ＤＳＣ、６……ＣＲＴ同期信号発生部、７……
可変ローパスフイルタ、８……ＣＲＴ、９……カ
ツトオフ周波数制御部、１１……カウンタ、１２
……ＲＯＭ、１３……ＤＡコンバータ、１４……
デコーダ、２１〜２４……ローパスフイルタ、２
５，２６……切換スイツチ、ｆ１〜ｆ４……カツ
トオフ周波数。
Fig. 1 is a block diagram of an ultrasonic image diagnostic apparatus according to an embodiment of this invention, Fig. 2 is a characteristic diagram of the position of the scanning line on the screen and changes in cutoff frequency, and Fig. 3
The figure shows another characteristic diagram of the change in the position of the scanning line on the screen and the cut-off frequency. Figure 4 is a block diagram showing a specific example of the variable low-pass filter and cut-off frequency control section. Figure 5 shows the variable low-pass filter and cut-off frequency control. FIG. 6 is a diagram showing the correspondence between the position of the scanning line on the screen and the cutoff frequency, FIG. 7 is a block diagram of a conventional ultrasonic diagnostic imaging device, and FIG. 8 is an example of the screen. 9 are explanatory diagrams showing the function of the low-pass filter. Explanation of symbols, 1... Ultrasound image diagnostic device, 5...
...DSC, 6...CRT synchronization signal generator, 7...
Variable low-pass filter, 8...CRT, 9...Cutoff frequency control section, 11...Counter, 12
...ROM, 13...DA converter, 14...
Decoder, 21-24...Low pass filter, 2
5, 26...Selector switch, f1-f4...Cut-off frequency.
Claims (1)
を生成し、その画像データをＤＳＣからビデオ信
号としてラスタスキヤン型デイスプレイへ出力し
、ラスタスキヤン型デイスプレイで画像表示する
超音波画像診断装置において、 ＤＳＣとラスタスキヤン型デイスペレイの間に
可変カツトオフ周波数のローパスフイルタを介設
すると共に、そのローパスフイルタを通過するビ
デオ信号の走査線の位置に応じてカツトオフ周波
数を変更するカツトオフ周波数制御手段を設けた
ことを特徴とする超音波画像診断装置。[Claim for Utility Model Registration] Image data is generated from biological information obtained using ultrasound, the image data is output as a video signal from a DSC to a raster scan type display, and the image is displayed on the raster scan type display. In an ultrasonic image diagnostic apparatus, a low-pass filter with a variable cut-off frequency is interposed between the DSC and the raster scan type display, and the cut-off frequency is changed according to the position of the scanning line of the video signal passing through the low-pass filter. An ultrasonic image diagnostic apparatus characterized by being provided with frequency control means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14166589U JPH0380710U (en) | 1989-12-07 | 1989-12-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14166589U JPH0380710U (en) | 1989-12-07 | 1989-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0380710U true JPH0380710U (en) | 1991-08-19 |
Family
ID=31688539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14166589U Pending JPH0380710U (en) | 1989-12-07 | 1989-12-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0380710U (en) |
-
1989
- 1989-12-07 JP JP14166589U patent/JPH0380710U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0100094B2 (en) | Ultrasonic blood flow imaging method and apparatus | |
| US5910116A (en) | Ultrasonic diagnostic apparatus that regenerates image signals according to a non-interlace scheme | |
| JPS61238237A (en) | Ultrasonic diagnostic apparatus | |
| JPH07334665A (en) | Method and device for picture display | |
| JPH0380710U (en) | ||
| JPS5848631Y2 (en) | pattern display device | |
| JPH0576532A (en) | Ultrasonic diagnostic device | |
| JPH0467408U (en) | ||
| JP2784799B2 (en) | Ultrasound diagnostic equipment | |
| JPH02145882U (en) | ||
| JPH0332336Y2 (en) | ||
| JPH11169368A (en) | Ultrasonograph | |
| JP3044482B2 (en) | Method and circuit device for displaying a radar echo signal | |
| JPH01137674U (en) | ||
| JPH02126615U (en) | ||
| JPS62112847U (en) | ||
| JPS63230155A (en) | Ultrasonic diagnostic apparatus | |
| JPS62200305U (en) | ||
| JPH0465515U (en) | ||
| JPS62141273U (en) | ||
| JPH03280937A (en) | Ultrasonic diagnostic device | |
| JPH0263446A (en) | Ultrasonic wave diagnosis device | |
| JPS6352354U (en) | ||
| JPH0565309U (en) | Ultrasonic diagnostic equipment | |
| JPS61161451A (en) | Ultrasonic diagnosis device |