JPH02220512A - Ultrasonic wave delay line - Google Patents
Ultrasonic wave delay lineInfo
- Publication number
- JPH02220512A JPH02220512A JP4073289A JP4073289A JPH02220512A JP H02220512 A JPH02220512 A JP H02220512A JP 4073289 A JP4073289 A JP 4073289A JP 4073289 A JP4073289 A JP 4073289A JP H02220512 A JPH02220512 A JP H02220512A
- Authority
- JP
- Japan
- Prior art keywords
- input
- ultrasonic
- medium
- ultrasonic wave
- output side
- 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
- 239000011521 glass Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 14
- 230000000644 propagated effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 235000011511 Diospyros Nutrition 0.000 description 1
- 244000236655 Diospyros kaki Species 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は主にＰＡＬ方式テレビジョンシステムの色信号
復調、ＮＴＳＣ方式テレビジョンシステムの画質向上、
ＶＴＲの再生時のクロスカラー除去、Ｓ／Ｎ比向上など
、主に映像機器の画質向上に用いられる超音波遅延線に
関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is mainly applicable to color signal demodulation of PAL television systems, image quality improvement of NTSC television systems,
This invention relates to ultrasonic delay lines that are mainly used to improve the image quality of video equipment, such as removing cross colors during VTR playback and improving the S/N ratio.
従来の技術
従来、この柿の超音波遅延線は、二つの圧電素子とガラ
ス遅延媒体とを主要構成とし、入力側の圧電素子に電気
信号を印加し、それにより変換された超音波をガラス遅
延媒体内に送り出し、一定時間ガラス遅延媒体内を伝播
した後、出力側の圧電素ｒにより再び電気信号に変換し
取り出すという動作原理を用い、入力側と出力側の圧電
素子は同一材質を用いたものであった。Conventional technology Conventionally, this persimmon ultrasonic delay line mainly consists of two piezoelectric elements and a glass delay medium. An electric signal is applied to the piezoelectric element on the input side, and the converted ultrasonic waves are transmitted through the glass delay line. The operating principle is that the signal is sent into the medium, propagated within the glass delay medium for a certain period of time, and then converted back into an electrical signal by the piezoelectric element on the output side and taken out.The piezoelectric elements on the input and output sides are made of the same material. It was something.
発明が解決しようとする課題
しかし、」−２のような従来の構成では、入力側と出力
側の圧電素子を同一材質と固定していたため、超音波遅
延線の一般特性である通過帯域特性の改善には限界があ
った。Problems to be Solved by the Invention However, in the conventional configuration like ``-2'', the piezoelectric elements on the input side and the output side are fixed to the same material, so that the passband characteristics, which are the general characteristics of ultrasonic delay lines, are There were limits to improvement.
本発明の目的は上記のような問題点を解決し、通過４１
）載持性の優れた超音波遅延線を提供しようとするもの
である。The purpose of the present invention is to solve the above-mentioned problems and to
) This aims to provide an ultrasonic delay line with excellent carrying performance.
課題を解決するための手段
本発明は上記目的を達成するために、二つの圧電素子と
ガラス遅延媒体とを主要構成とし、入力端のＪｌｆ電素
子に電気信号を印加し、それにより変換された超音波を
ガラス遅延媒体内に送り出し、一定時間ガラス遅延媒体
内を伝播した後、出力側の圧電素子により再び電気信号
に変換し取り出す超音波遅延線において、入力側と出力
側の圧電素子の材質を変えた超音波遅延線とした。Means for Solving the Problems In order to achieve the above object, the present invention mainly consists of two piezoelectric elements and a glass delay medium, and applies an electric signal to the Jlf electric element at the input end, thereby converting the signal. Ultrasonic waves are sent into a glass delay medium, and after propagating within the glass delay medium for a certain period of time, the piezoelectric element on the output side converts the ultrasonic wave into an electrical signal and takes it out again. The ultrasonic delay line was changed to
作用
上記の構成により、圧電素子の材質により、超音波遅延
線の一般特性である通過帯域特性の優れた超音波遅延線
が提供できることとなる。Effect: With the above configuration, it is possible to provide an ultrasonic delay line with excellent passband characteristics, which are general characteristics of ultrasonic delay lines, depending on the material of the piezoelectric element.
実施例 以下一実施例として示した図面を説明する。Example The drawings shown as one embodiment will be explained below.
第１図において、１はガラス遅延媒体、２ａ。In FIG. 1, 1 is a glass retardation medium and 2a.
２ｂは圧電素子でそれぞれ材質ａ、材質すで構成されて
いる。３は電極、４はリード線、５は超音波の伝播経路
、６は超音波吸収材である。ガラス遅延媒体ｌの傾斜面
に、電極３を有し電気信号を音響信号に変える人力用の
材質ａの圧電素Ｔ−２８と、電極３を有し逆の作用をす
る音汁信シ）を電気信号に変換する出力側の材質ｌ）の
圧電素−ｒ２ｂと“が取り付けられており、電極３から
はリード線４がそれぞれ取り付けられている。音響信号
である超音波のガラス遅延媒体ｌ内の超音波の伝播経路
５は点線で示す。６は超音波吸収材で、正規の反射面以
外の面で反１）ｉ して出力側に到達する遅延１３号°
としての不要反射を吸収、減衰させるようガラス遅延媒
体１の側面に設けた。2b is a piezoelectric element made of material A and material A, respectively. 3 is an electrode, 4 is a lead wire, 5 is an ultrasonic propagation path, and 6 is an ultrasonic absorber. On the inclined surface of the glass delay medium 1, a piezoelectric element T-28 of material A, which has an electrode 3 and is used for human power to convert an electric signal into an acoustic signal, and a sound sensor (which has an electrode 3 and has the opposite effect) are placed. Piezoelectric elements -r2b and ``, which are made of material l) on the output side that converts into electrical signals, are attached, and lead wires 4 are attached from the electrodes 3 to each other. The propagation path 5 of the ultrasonic wave is shown by a dotted line. 6 is an ultrasonic absorbing material, and there is a delay 13° in which the ultrasonic wave reaches the output side by 1) i on a surface other than the regular reflecting surface.
It was provided on the side surface of the glass retardation medium 1 to absorb and attenuate unnecessary reflections.
このような構成の超音波遅延線の、入力用の圧電素ｒ２
ａに電気信号−を印加し、それにより変換された超音波
をガラス遅延媒体１に送り出し、点線で示す伝播経路５
を一定時間伝播した後、出ツノ側の圧電素子２ｂにより
１ｊ１び電気イ：−１号に変換し取り出すものである。The piezoelectric element r2 for input of the ultrasonic delay line with such a configuration
An electrical signal is applied to a, thereby sending the converted ultrasonic wave to the glass delay medium 1, and the propagation path 5 shown by the dotted line.
After propagating for a certain period of time, the piezoelectric element 2b on the output horn side converts it into 1j1 and electric A:-1 and takes it out.
第２図は本発明の技術（Ａ）と従来の技術（１３）によ
る超音波遅延線の一般特性である通過Ｊｉ）載持性を示
す図で、圧電素子の材質により特性値が選択できること
を示す。Figure 2 is a diagram showing the general characteristics of the ultrasonic delay line according to the technology (A) of the present invention and the conventional technology (13); show.
発明の効果
本発明は上１書ｄのような構成としたので、入力端と出
力側の圧電素子の材質を変えることにより超音波遅延線
の一般特性である通過帯域特性を改ｉＱできるという効
果がある。Effects of the Invention Since the present invention has the configuration as described in 1.d above, it has the effect that the passband characteristics, which are the general characteristics of an ultrasonic delay line, can be modified by changing the materials of the piezoelectric elements on the input and output sides. There is.
第１図は本発明の一実施例として示した超音波遅延線の
側面図、第２図は本発明の技術と従来の技術による超音
波遅延線の一般特性である通過帯域特性の比較図である
。Fig. 1 is a side view of an ultrasonic delay line shown as an embodiment of the present invention, and Fig. 2 is a comparison diagram of passband characteristics, which are general characteristics, of ultrasonic delay lines according to the present invention and conventional techniques. be.
Claims (1)
し、入力側の圧電素子に電気信号を印加し、それにより
変換された超音波をガラス遅延媒体内に送り出し、一定
時間ガラス遅延媒体内を伝播した後、出力側の圧電素子
により再び電気信号に変換し取り出す超音波遅延線にお
いて、入力側と出力側の圧電素子の材質を変えたことを
特徴とする超音波遅延線。(1) Two piezoelectric elements and a glass delay medium are the main components, and an electric signal is applied to the piezoelectric element on the input side, and the converted ultrasonic wave is sent into the glass delay medium for a certain period of time. 1. An ultrasonic delay line in which the piezoelectric elements on the input side and the output side are made of different materials, in which the piezoelectric elements on the input side and the output side are made of different materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4073289A JPH02220512A (en) | 1989-02-21 | 1989-02-21 | Ultrasonic wave delay line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4073289A JPH02220512A (en) | 1989-02-21 | 1989-02-21 | Ultrasonic wave delay line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02220512A true JPH02220512A (en) | 1990-09-03 |
Family
ID=12588805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4073289A Pending JPH02220512A (en) | 1989-02-21 | 1989-02-21 | Ultrasonic wave delay line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02220512A (en) |
-
1989
- 1989-02-21 JP JP4073289A patent/JPH02220512A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3343105A (en) | Electric delay device with polarization variations in transducers to reduce echo vibrations | |
| JPH02220512A (en) | Ultrasonic wave delay line | |
| US3680008A (en) | Ultrasonic wave delay device having a trap zone for undesired signal components | |
| US4099030A (en) | Speech signal processor using comb filter | |
| US4558364A (en) | Surface acoustic wave device | |
| JPH02220511A (en) | Ultrasonic wave delay line | |
| JPS6189709A (en) | Ultrasonic wave delay line | |
| JPS6189710A (en) | Ultrasonic wave delay line | |
| JP2607511B2 (en) | Surface acoustic wave device | |
| JPS61120512A (en) | Ultrasonic wave delay line | |
| JPH0238502Y2 (en) | ||
| JPS6114688B2 (en) | ||
| JPS6392116A (en) | Ultrasonic wave delay line | |
| JPS59218029A (en) | Ultrasonic wave delay line | |
| SU1048569A1 (en) | Surface acoustic wave filter | |
| JPS5937721A (en) | Elastic wave device | |
| JPS6240887A (en) | Emphasis system | |
| JPS59154812A (en) | Ultrasonic delay line | |
| JPS57174919A (en) | Surface wave delaying device | |
| JPS6042920A (en) | Ultrasonic wave delay line | |
| JPH01261012A (en) | Many times reflection type ultrasonic wave delay line | |
| JPS6121612A (en) | Surface acoustic wave device | |
| JPS6347078Y2 (en) | ||
| JPS589603B2 (en) | comb filter | |
| JPH0346585Y2 (en) |