JPS5874223U - Ultrasonic autofocusing device - Google Patents
Ultrasonic autofocusing deviceInfo
- Publication number
- JPS5874223U JPS5874223U JP17012281U JP17012281U JPS5874223U JP S5874223 U JPS5874223 U JP S5874223U JP 17012281 U JP17012281 U JP 17012281U JP 17012281 U JP17012281 U JP 17012281U JP S5874223 U JPS5874223 U JP S5874223U
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic
- autofocusing device
- integrator
- output
- subject
- 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
Landscapes
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
、 第１図は本考案の一実施例の要部構成番示すブロ
ック図、第２図は可変利得増幅器の一例の構成を示す回
路図である。
１・・・・・・シャッタスイッチ、２・・・・・・ワン
ショットマルチバイブレータ、３・・・・・・発振器、
４．・・・・・・超音波トランスデユーサ、５・・・・
・・タイマ、６・・・・・・受信ゲート、７・・・・・
・積分器、８・・・・・・増幅器、９．１０・・・・・
・第１、第２の可変利得増幅器。, FIG. 1 is a block diagram showing the main part configuration number of an embodiment of the present invention, and FIG. 2 is a circuit diagram showing the configuration of an example of a variable gain amplifier. 1... Shutter switch, 2... One-shot multivibrator, 3... Oscillator,
4. ...Ultrasonic transducer, 5...
...Timer, 6...Reception gate, 7...
・Integrator, 8...Amplifier, 9.10...
- First and second variable gain amplifiers.
Claims (1)
信し、その所要時間に基づいて被写体距離に応じた信号
を得る超音波オートフォーカシング装置において、超音
波送出から予定時間幅のパルス幅を有するパルスを発生
するパルス発生手段と、このパルス発生手段の出力を積
分する積分器と、この積分器の積分出力に応じた増幅度
で超音波受信信号を増幅する少なくとも一段の可変利得
増幅器とを具備したことを特徴とする超音波オートフォ
ーカシング装置。In an ultrasonic autofocusing device that emits ultrasonic waves, receives the echoes reflected back from the subject, and obtains a signal according to the subject distance based on the required time, the pulse width of the scheduled time width is calculated from the ultrasonic transmission. an integrator that integrates the output of the pulse generator, and at least one stage of variable gain amplifier that amplifies the received ultrasonic signal with an amplification degree corresponding to the integrated output of the integrator. An ultrasonic autofocusing device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17012281U JPS5874223U (en) | 1981-11-14 | 1981-11-14 | Ultrasonic autofocusing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17012281U JPS5874223U (en) | 1981-11-14 | 1981-11-14 | Ultrasonic autofocusing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5874223U true JPS5874223U (en) | 1983-05-19 |
Family
ID=29962088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17012281U Pending JPS5874223U (en) | 1981-11-14 | 1981-11-14 | Ultrasonic autofocusing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5874223U (en) |
-
1981
- 1981-11-14 JP JP17012281U patent/JPS5874223U/en active Pending
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