JPH0752932B2 - Television receiver - Google Patents
Television receiverInfo
- Publication number
- JPH0752932B2 JPH0752932B2 JP61115025A JP11502586A JPH0752932B2 JP H0752932 B2 JPH0752932 B2 JP H0752932B2 JP 61115025 A JP61115025 A JP 61115025A JP 11502586 A JP11502586 A JP 11502586A JP H0752932 B2 JPH0752932 B2 JP H0752932B2
- Authority
- JP
- Japan
- Prior art keywords
- sound field
- sound
- field expansion
- function
- expanding
- 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.)
- Expired - Lifetime
Links
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- Television Receiver Circuits (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、いわゆるサラウンド等の音場拡大機能を有す
るテレビジョン受像機に関する。TECHNICAL FIELD The present invention relates to a television receiver having a sound field expanding function such as so-called surround sound.
本発明は音場拡大機能を有するテレビジョン受像機にお
いて、音場拡大音の音量増加に伴って管面上の表示図形
を変化させるようにしたことにより、視聴者が音場拡大
機能のオン機能を容易に理解できるようにしたものであ
る。According to the present invention, in the television receiver having the sound field expanding function, the display figure on the tube surface is changed as the volume of the sound field expanding sound is increased, so that the viewer can turn on the sound field expanding function. Is to make it easy to understand.
〔従来の技術〕 近年、テレビジョン受像機の多機能化に伴って、サラウ
ンド等の音場拡大機能を有するテレビジョン受像機が増
している。そして、音場拡大機能をオンとするとき、受
像管の管面上にこの機能を表わす図形(文字)を表示す
ることが知られている。[Prior Art] In recent years, the number of television receivers having a sound field expanding function such as surround sound has increased along with the multifunctionalization of television receivers. It is known that when the sound field expanding function is turned on, a graphic (character) representing this function is displayed on the tube surface of the picture tube.
例えば、このような音場拡大機能をオンとするとき、第
4図AからBあるいは第5図AからBに示すように管面
(100)上には図形が表示され、一方、この機能をオフ
とするとき、第6図AからBあるいは第7図AからBに
示すように管面(100)上に表示された図形が消滅する
ようになされる。For example, when such a sound field expanding function is turned on, a graphic is displayed on the tube surface (100) as shown in FIG. 4A to B or FIG. 5A to B. When turned off, the graphic displayed on the tube surface (100) disappears as shown in FIG. 6A to B or FIG. 7A to B.
しかしながら、このような従来の方法では、視聴者にと
って音場拡大機能のオンオフを感覚的にとらえにくく、
解りにくいものであった。However, with such a conventional method, it is difficult for the viewer to perceive the on / off state of the sound field expansion function.
It was hard to understand.
本発明は斯る点に鑑みてなされたものであり、視聴者が
音場拡大機能のオン機能を容易に理解できるようにする
ものである。The present invention has been made in view of the above circumstances, and is intended to allow a viewer to easily understand the ON function of the sound field expanding function.
本発明は、音場拡大音を変える音量可変手段(12L),
(12R)と、受像管の管面上に音場拡大機能に関連した
図形を表示する図形表示手段(18)と、これら音量可変
手段(12L),(12R)及び図形表示手段(18)とを制御
する制御手段(15)例えばマイコンとを備えるものであ
る。そして、音場拡大機能をオンとするとき、制御手段
(15)の制御により、音場拡大音を設定された所定音量
となるまで徐々に増加させると共に、この増加に伴って
図形を徐々に変化させるものである。The present invention is a volume changing means (12L) for changing a sound expanding sound,
(12R), graphic display means (18) for displaying a graphic related to the sound field expansion function on the surface of the picture tube, and these volume varying means (12L), (12R) and graphic display means (18) And a control means (15) for controlling, for example, a microcomputer. When the sound field expansion function is turned on, the sound field expansion sound is gradually increased by the control of the control means (15) until it reaches the set predetermined volume, and the figure is gradually changed with this increase. It is what makes me.
上述構成において、音場拡大機能がオンとされると、音
場拡大音が徐々に増加し、これに伴って、受像管の管面
上に表示図形が例えば大きく、変化していく。そのた
め、視聴者は音場拡大機能のオンを音場拡大音の増加に
伴って変化する表示図形によって視覚的に容易に理解し
得る。In the above-described configuration, when the sound field expanding function is turned on, the sound field expanding sound gradually increases, and accordingly, the display figure on the tube surface of the picture tube changes, for example, greatly. Therefore, the viewer can visually easily understand that the sound field expanding function is turned on by the display figure changing with the increase of the sound field expanding sound.
以下、第1図を参照しながら本発明の一実施例について
説明しよう。An embodiment of the present invention will be described below with reference to FIG.
同図において、(1)はアンテナ、(2)はチューナで
あり、チューナ(2)からの中間周波信号は中間周波増
幅回路(3)に供給される。この中間周波増幅回路
(3)は映像検波回路を含むものであり、この中間周波
増幅回路(3)より出力される映像信号SVはY/Cプロセ
ッサ(4)に供給される。Y/Cプロセッサ(4)では、
輝度信号と色信号との分離、色復調、マトリクス等の処
理がなされ、このY/Cプロセッサ(4)からは赤、緑、
青の原色信号R,G,Bが出力される。このY/Cプロセッサ
(4)からの原色信号R,G,Bは重畳回路(5)及びドラ
イブ回路(6)を介して受像管(7)に供給され、この
受像等(7)の管面(100)上にはこれら原色信号R,G,B
によるカラー画像が表示される。In the figure, (1) is an antenna and (2) is a tuner, and the intermediate frequency signal from the tuner (2) is supplied to an intermediate frequency amplifier circuit (3). The intermediate frequency amplifier circuit (3) includes a video detection circuit, and the video signal SV output from the intermediate frequency amplifier circuit (3) is supplied to the Y / C processor (4). In Y / C processor (4),
Processing such as separation of luminance signal and color signal, color demodulation, matrix, etc. is performed. From this Y / C processor (4), red, green,
The blue primary color signals R, G, B are output. The primary color signals R, G, B from the Y / C processor (4) are supplied to a picture tube (7) via a superimposing circuit (5) and a drive circuit (6), and the surface of the image receiving section (7) and the like. These primary color signals R, G, B are on (100).
A color image is displayed.
また、中間周波増幅回路(3)で分離された音声中間周
波信号SIFはオーディオプロセッサ(8)に供給され
る。オーディオプロセッサ(8)では、音声MF検波、多
重復調等の処理がなされる。そして、このオーディオプ
ロセッサ(8)より出力される左音声信号SL及び右音声
信号SRは夫々低周波増幅器(9L)及び(9R)を介して視
聴者の前面に配されるメインの左側スピーカ(10L)及
び右側スピーカ(10R)に供給される。The audio intermediate frequency signal SIF separated by the intermediate frequency amplifier circuit (3) is supplied to the audio processor (8). The audio processor (8) performs processing such as voice MF detection and multiple demodulation. The left audio signal SL and the right audio signal SR output from the audio processor (8) are respectively passed through the low frequency amplifiers (9L) and (9R) to the main left speaker (10L) arranged in front of the viewer. ) And the right speaker (10R).
また、オーディオプロセッサ(8)より出力される左音
声信号SL及び右音声信号SRは音場拡大信号発生回路(1
1)に供給され、この信号発生回路(11)では、くし型
フィルタ、遅延回路等を使用した処理(例えば特願昭60
−287304号に一例が記載されている)がなされ、音場拡
大信号SL′及びSR′が形成される。そして、この信号発
生回路(11)より出力される音場拡大信号SL′及びSR′
は、夫々音量調整用の増幅器(12L)及び(12R)、低周
波増幅器(13L)及び(13R)を介して例えば視聴者の背
面に配される音場拡大用の左側スピーカ(14L)及び右
側スピーカ(14R)に供給される。Further, the left audio signal SL and the right audio signal SR output from the audio processor (8) are the sound field expansion signal generating circuit (1
1), and in this signal generation circuit (11), processing using a comb filter, delay circuit, etc.
No. 287304), an example of which is described in No. 287304), and sound field expansion signals SL ′ and SR ′ are formed. Then, the sound field expansion signals SL 'and SR' output from the signal generating circuit (11).
Are, for example, a left speaker (14L) and a right side for expanding a sound field, which are arranged on the back of the viewer via amplifiers (12L) and (12R) for volume adjustment and low frequency amplifiers (13L) and (13R), respectively. It is supplied to the speaker (14R).
また、増幅器(12L)及び(12R)には制御用マイクロコ
ンピュータ(以下「制御用マイコン」という)(15)よ
りD/A変換器(16)を介して制御信号が供給されてその
利得が制御される。即ち、音場拡大機能がオフの状態に
あって時点t1で音場拡大機能スイッチ(17)が押される
と、スピーカ(14L)及び(14R)に供給される音場拡大
信号SL′及びSR′のレベルが第2図Bに示すように所定
時間、例えば2秒間をもって0%から100%まで徐々に
増加するようになされる。一方、音場拡大機能がオンの
状態にあって時点t2で音場拡大機能スイッチ(17)が押
されると、スピーカ(14L)及び(14R)に供給される音
場拡大信号SL′及びSR′のレベルが第3図Bに示すよう
に所定時間、例えば2秒間をもって100%から0%まで
徐々に減少するようになされる。尚、100%となると
き、音場拡大音は設定された所定音量となる。A control signal is supplied to the amplifiers (12L) and (12R) from a control microcomputer (hereinafter referred to as "control microcomputer") (15) via a D / A converter (16) to control the gain. To be done. That is, when the sound field expansion function switch (17) is pressed at the time t 1 when the sound field expansion function is off, the sound field expansion signals SL ′ and SR supplied to the speakers (14L) and (14R). 2 ', the level is gradually increased from 0% to 100% in a predetermined time, for example, 2 seconds. On the other hand, when the sound field expanding function is turned on and the sound field expanding function switch (17) is pressed at time t 2 , the sound field expanding signals SL ′ and SR supplied to the speakers (14L) and (14R) are pressed. 3 ', the level gradually decreases from 100% to 0% in a predetermined time, for example, 2 seconds. When it reaches 100%, the sound field expansion sound has a set predetermined volume.
また、上述した信号発生回路(11)の処理動作は制御用
マイコン(15)によって制御される。即ち、音場拡大機
能がオフの状態にあって時点t1で音場拡大機能スイッチ
(17)が押されると、制御用マイコン(15)より信号発
生回路(11)に供給される制御信号は、第2図Aに示す
ように時点t1に低レベル“0"から高レベル“1"となり、
処理動作が開始され、音場拡大信号SL′及びSR′が出力
されるようになされる。一方、音場拡大機能がオンの状
態にあって時点t2で音場拡大機能スイッチ(17)が押さ
れると、制御用マイコン(15)より信号発生回路(11)
に供給される制御信号は、第3図Aに示すように音場拡
大信号SL′及びSR′のレベルが0%となる時点で高レベ
ル“1"より低レベル“0"となり、処理動作が停止され、
音場拡大信号SL′及びSR′が出力されないようになされ
る。The processing operation of the signal generating circuit (11) described above is controlled by the control microcomputer (15). That is, when the sound field expansion function switch (17) is pressed at time t 1 when the sound field expansion function is off, the control signal supplied from the control microcomputer (15) to the signal generation circuit (11) is , As shown in FIG. 2A, at time t 1 , the low level changes from “0” to the high level “1”,
The processing operation is started and the sound field expansion signals SL 'and SR' are output. On the other hand, when the sound field expansion function switch (17) is pressed at time t 2 while the sound field expansion function is on, the control microcomputer (15) causes the signal generation circuit (11) to
As shown in FIG. 3A, the control signal supplied to the low level "0" changes from the high level "1" to the low level "0" when the level of the sound field expansion signals SL 'and SR' becomes 0%. Stopped,
The sound field expansion signals SL 'and SR' are prevented from being output.
また、(18)はキャラクタジェネレータであり、制御用
マイコン(15)より制御信号が供給されて制御される。
即ち、音場拡大機能がオフの状態にあって時点t1で音場
拡大機能スイッチ(17)が押されると、音場拡大信号S
L′及びSR′のレベル増加(第2図B参照)に伴って、
受像管(7)の管面(100)上に第2図Cの(a)→
(b)→(c)→(d)に示すように順次大きく変化す
る図形を表示する文字信号SCHが発生されるようになさ
れる。一方音場拡大機能スイッチ(17)が押されると、
音場拡大信号SL′及びSR′のレベル減少(第3図B参
照)にともなって、受像管(7)の管面(100)上に第
3図Cの(a)→(b)→(c)→(d)に示すように
順次小さく変化する図形を表示する文字信号SCHが発生
されるようになされる。尚、第2図C及び第3図Cの夫
々の(d)の図形は所定時間、例えば2秒間表示され
る。A character generator (18) is supplied with a control signal from a control microcomputer (15) for control.
That is, when the sound field expansion function switch (17) is pressed at time t 1 when the sound field expansion function is off, the sound field expansion signal S
As the levels of L ′ and SR ′ increase (see FIG. 2B),
On the tube surface (100) of the picture tube (7), (a) in FIG. 2C →
As shown in (b)->(c)-> (d), a character signal SCH for displaying a figure which changes greatly in sequence is generated. On the other hand, when the sound field expansion function switch (17) is pressed,
As the sound field expansion signals SL 'and SR' decrease in level (see FIG. 3B), they are displayed on the tube surface (100) of the picture tube (7) (a) → (b) → (FIG. 3C). As shown in (c) → (d), a character signal SCH for displaying a graphic that gradually changes is generated. The figures (d) in FIGS. 2C and 3C are displayed for a predetermined time, for example, 2 seconds.
このキャラクタジェネレータ(18)で発生される文字信
号SCHは重畳回路(5)に供給され、信号R,G,Bに重畳さ
れる。の場合図形は、例えば黄色で表示される。即ち、
信号R,Gのみに文字信号SCHが重畳される。The character signal SCH generated by the character generator (18) is supplied to the superposition circuit (5) and superposed on the signals R, G and B. In the case of, the graphic is displayed in yellow, for example. That is,
The character signal SCH is superimposed only on the signals R and G.
本例は以上のように構成され、音場拡大機能がオフの状
態に音場拡大機能スイッチ(17)を押して音場拡大機能
をオンとすると、信号発生回路(11)の処理動作が開始
され、音場拡大信号SL′及びSR′が出力される。そし
て、スピーカ(14L)及び(14R)に供給される音場拡大
信号SL′のレベルが第2図Bに示すように所定時間をも
って0%から100%まで増加する。即ち音場拡大音が零
から設定された所定音量となるまで徐々に増加する。さ
らに、音場拡大信号SL′及びSR′のレベル増加に伴っ
て、即ち音場拡大音の増加に伴って受像間(7)の管面
(100)上の表示図形は同図Cの(a)→(b)→
(c)→(d)に示すように順次大きく変化し、その後
消滅する。This example is configured as described above. When the sound field expansion function is turned off and the sound field expansion function switch (17) is pressed to turn on the sound field expansion function, the processing operation of the signal generation circuit (11) starts. , Sound field expansion signals SL ′ and SR ′ are output. Then, the level of the sound field expansion signal SL 'supplied to the speakers (14L) and (14R) increases from 0% to 100% in a predetermined time as shown in FIG. 2B. That is, the sound field expansion sound gradually increases from zero until it reaches the set predetermined volume. Furthermore, as the level of the sound field expansion signals SL 'and SR' increases, that is, as the sound field expansion sound increases, the display figure on the tube surface (100) between the image receiving portions (7) is shown in (a) of FIG. ) → (b) →
As shown in (c) → (d), it changes greatly in sequence and then disappears.
一方、音場拡大機能がオフの状態に音場拡大機能スイッ
チ(17)を押して音場拡大機能をオフとすると、スピー
カ(14L)及び(14R)に供給される音場拡大信号SL′及
びSR′のレベルが第3図Bに示すように所定時間をもっ
て100%から0%まで減少する。即ち、音場拡大音が設
定された所定音量から零となるまで徐々に減少する。ま
た、音場拡大信号SL′及びSR′のレベル減少に伴って、
即ち音場拡大音の減少に伴って受像管(7)の管面(10
0)上の表示図形は同図Cの(a)→(b)→(c)→
(d)に示すように順次小さく変化し、その後消滅す
る。そして、音場拡大信号SL′及びSR′のレベルが0%
となった後に、信号発生回路(11)の処理動作が停止さ
れ、音場拡大信号SL′及びSR′が出力されないようにな
る。On the other hand, when the sound field expansion function is turned off and the sound field expansion function switch (17) is pressed to turn off the sound field expansion function, the sound field expansion signals SL 'and SR supplied to the speakers (14L) and (14R) are supplied. The level of ‘′ decreases from 100% to 0% in a predetermined time as shown in FIG. 3B. That is, the sound field expansion sound gradually decreases from the set predetermined volume to zero. Also, as the level of the sound field expansion signals SL ′ and SR ′ decreases,
That is, with the decrease of the sound field expansion sound, the surface of the picture tube (7) (10
0) The display figure above is (a) → (b) → (c) → in FIG.
As shown in (d), it gradually decreases and then disappears. The level of the sound field expansion signals SL 'and SR' is 0%.
After that, the processing operation of the signal generation circuit (11) is stopped, and the sound field expansion signals SL 'and SR' are not output.
このように本例によれば、音場拡大機能をオンまたはオ
フとするとき、音場拡大音が徐々に増加または減少し、
これに伴って受像管(7)の管面(100)上の表示図形
が順次大きくまたは小さく変化するので、視聴者は音場
拡大機能のオンまたはオフを音場拡大音の増加または減
少に伴って変化する表示図形によって視覚的に容易に理
解することができる。Thus, according to this example, when the sound field expansion function is turned on or off, the sound field expansion sound gradually increases or decreases,
Along with this, the display figure on the tube surface (100) of the picture tube (7) changes gradually in a large or small manner, so that the viewer turns on or off the sound field expanding function as the sound field expanding sound increases or decreases. It can be easily understood visually by the changing display figure.
尚、上述実施例においては、音場拡大用のスピーカ(14
L),(14R)を有してなるものであるが、メインのスピ
ーカ(10L),(10R)のみを使用する従来周知の音場拡
大機能を有するテレビジョン受像機にも本発明を同様に
適用することができる。In the above embodiment, the speaker (14
L) and (14R), but the present invention is similarly applied to a television receiver having a well-known sound field expanding function that uses only the main speakers (10L) and (10R). Can be applied.
また、上述実施例の表示図形は一例であって、形状、色
等は種々考えることができる。要は、表示図形が音場拡
大音の変化に伴って変化することが必要である。Further, the display graphic of the above-mentioned embodiment is an example, and various shapes, colors, etc. can be considered. In short, it is necessary that the displayed figure changes in accordance with the change in the sound expanding sound.
以上述べた本発明によれば、音場拡大機能をオンとする
とき、音場拡大音が徐々に増加し、これに伴って受像管
の管面上の表示図形が順次変化し、音場拡大機能の目的
とする「広がり感」が視聴者にとって理解しやすい形で
表現されるので、音場拡大機能のオン機能を視覚的に容
易に理解することができる。According to the present invention described above, when the sound field expanding function is turned on, the sound field expanding sound is gradually increased, and accordingly, the display figure on the tube surface of the picture tube is sequentially changed to expand the sound field. Since the "expansion" that is the purpose of the function is expressed in a form that is easy for the viewer to understand, it is possible to easily visually understand the ON function of the sound field expanding function.
第1図は本発明の一実施例を示す構成図、第2図及び第
3図はその説明のための図、第4図〜第7図は従来例の
説明のための図である。 (3)は中間周波増幅回路、(4)はY/Cプロセッサ、
(5)は重畳回路、(7)は受像管、(8)はオーディ
オプロセッサ、(10L)(10R)(14L)及び(14R)はス
ピーカ、(11)は音場拡大信号発生回路、(12L)及び
(12R)は増幅器、(15)は制御用マイクロコンピュー
タ、(17)は音場拡大機能スイッチ、(18)はキャラク
タジェネレータ、(100)は管面である。FIG. 1 is a block diagram showing an embodiment of the present invention, FIGS. 2 and 3 are diagrams for explaining the same, and FIGS. 4 to 7 are diagrams for explaining a conventional example. (3) is an intermediate frequency amplifier circuit, (4) is a Y / C processor,
(5) is a superimposing circuit, (7) is a picture tube, (8) is an audio processor, (10L), (10R), (14L) and (14R) are speakers, (11) is a sound field expansion signal generating circuit, and (12L). ) And (12R) are amplifiers, (15) is a control microcomputer, (17) is a sound field expansion function switch, (18) is a character generator, and (100) is a tube surface.
Claims (1)
に於いて、 表示画面上に音場拡大機能に関連した図形を表示する図
形表示手段と、 左右スピーカに供給される左右音声信号に基づき音場拡
大信号を発生する音場拡大信号発生手段と、 上記音場拡大信号発生手段に基づき出力される、音場拡
大音を変える音量可変手段と、 上記音量可変手段及び図形表示手段並びに音場拡大信号
発生手段を制御する制御手段とを備え、 上記制御手段に有する音場拡大機能操作手段を「オン」
「オフ」制御したとき、上記制御手段によって上記音場
拡大信号発生手段、上記音量可変手段並びに図形表示手
段を制御し、上記音場拡大音を設定された所定音量とな
るまで徐々に増加又は減少させると共に、この増加又は
減少に伴って上記表示画面上の図形を徐々に拡大又は縮
小させる様に変化させることを特徴とするテレビジョン
受像機。1. In a television receiver having a sound field expanding function, a graphic display means for displaying a graphic related to the sound field expanding function on a display screen, and a left and right audio signal supplied to left and right speakers. Sound field expansion signal generating means for generating a sound field expansion signal, volume changing means for changing the sound field expanding sound output based on the sound field expanding signal generating means, the volume changing means, the graphic display means, and the sound field. Control means for controlling the expansion signal generating means, and "on" the sound field expansion function operating means included in the control means.
When the control is "off", the sound field expansion signal generating means, the volume varying means and the graphic display means are controlled by the control means to gradually increase or decrease the sound field expansion sound until the set predetermined volume is reached. At the same time, the television receiver is characterized in that the figure on the display screen is gradually enlarged or reduced in accordance with the increase or decrease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61115025A JPH0752932B2 (en) | 1986-05-20 | 1986-05-20 | Television receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61115025A JPH0752932B2 (en) | 1986-05-20 | 1986-05-20 | Television receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62271568A JPS62271568A (en) | 1987-11-25 |
| JPH0752932B2 true JPH0752932B2 (en) | 1995-06-05 |
Family
ID=14652362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61115025A Expired - Lifetime JPH0752932B2 (en) | 1986-05-20 | 1986-05-20 | Television receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0752932B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02131700A (en) * | 1988-07-20 | 1990-05-21 | Sanyo Electric Co Ltd | Television receiver |
| JPH0322419U (en) * | 1990-05-24 | 1991-03-07 | ||
| DE19616624A1 (en) * | 1996-04-25 | 1997-11-06 | Thomas Mohr | Screen display method and screen display device and apparatus herewith |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5636275A (en) * | 1979-08-31 | 1981-04-09 | Matsushita Electric Ind Co Ltd | Acoustic image expanding unit |
| JPS5753770U (en) * | 1980-09-12 | 1982-03-29 | ||
| JPS58161582A (en) * | 1982-03-19 | 1983-09-26 | Matsushita Electric Ind Co Ltd | volume level display device |
| JPS59223082A (en) * | 1983-06-02 | 1984-12-14 | Toshiba Corp | Display device of sound volume level |
-
1986
- 1986-05-20 JP JP61115025A patent/JPH0752932B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62271568A (en) | 1987-11-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |