JPH0198606U - - Google Patents
Info
- Publication number
- JPH0198606U JPH0198606U JP19608387U JP19608387U JPH0198606U JP H0198606 U JPH0198606 U JP H0198606U JP 19608387 U JP19608387 U JP 19608387U JP 19608387 U JP19608387 U JP 19608387U JP H0198606 U JPH0198606 U JP H0198606U
- Authority
- JP
- Japan
- Prior art keywords
- filter
- transducer
- buffer memory
- stage filter
- post
- 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
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Description
第１図は本考案の実施例に係る超音波診断装置
の要部を示すブロツク図、第２図はエコー信号の
位相特性を示す説明図、第３図はトランスジユー
サの入出力波形を示す説明図である。
１……トランスジユーサ、２……バツフアメモ
リ、４……前段フイルタ、１４……後段フイルタ
回路、１６……第１フイルタ、１８……第２フイ
ルタ。
Fig. 1 is a block diagram showing the main parts of an ultrasonic diagnostic apparatus according to an embodiment of the present invention, Fig. 2 is an explanatory diagram showing the phase characteristics of an echo signal, and Fig. 3 shows input and output waveforms of a transducer. It is an explanatory diagram. DESCRIPTION OF SYMBOLS 1... Transducer, 2... Buffer memory, 4... Pre-stage filter, 14... Post-stage filter circuit, 16... First filter, 18... Second filter.
Claims (1)
されるエコー信号を記憶するバツフアメモリを備
えるとともに、前記トランスジユーサとバツフア
メモリとの間に前段フイルタを設ける一方、 前記バツフアメモリから後記憶／先読み出しさ
れるエコー信号を通過する後段フイルタ回路を有
し、この後段フイルタ回路は、前記トランスジユ
ーサと等価なフイルタ特性をもつ第１フイルタと
前記前段フイルタと等価なフイルタ特性をもつ第
２フイルタとを順次接続して構成されていること
を特徴とする超音波診断装置。[Claims for Utility Model Registration] A buffer memory is provided for storing echo signals output from a transducer that transmits and receives ultrasonic waves, and a pre-stage filter is provided between the transducer and the buffer memory, and from the buffer memory It has a post-stage filter circuit that passes the echo signal that is later stored/pre-read, and the post-stage filter circuit has a first filter having filter characteristics equivalent to that of the transducer and a filter property equivalent to the pre-stage filter. An ultrasonic diagnostic apparatus characterized in that it is configured by sequentially connecting a second filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19608387U JPH0198606U (en) | 1987-12-23 | 1987-12-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19608387U JPH0198606U (en) | 1987-12-23 | 1987-12-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0198606U true JPH0198606U (en) | 1989-06-30 |
Family
ID=31486724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19608387U Pending JPH0198606U (en) | 1987-12-23 | 1987-12-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0198606U (en) |
-
1987
- 1987-12-23 JP JP19608387U patent/JPH0198606U/ja active Pending
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