JPH0544752B2 - - Google Patents
Info
- Publication number
- JPH0544752B2 JPH0544752B2 JP58122021A JP12202183A JPH0544752B2 JP H0544752 B2 JPH0544752 B2 JP H0544752B2 JP 58122021 A JP58122021 A JP 58122021A JP 12202183 A JP12202183 A JP 12202183A JP H0544752 B2 JPH0544752 B2 JP H0544752B2
- Authority
- JP
- Japan
- Prior art keywords
- address
- address signal
- signal
- tape
- running
- 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
- 239000002131 composite material Substances 0.000 claims description 16
- 238000007493 shaping process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
- G11B27/107—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating tapes
Description
【発明の詳細な説明】
産業上の利用分野
本発明は磁気テープ上に記録された相対番地信
号及び絶対番地信号を再生してテープ上の位置を
検知する番地信号再生装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an address signal reproducing apparatus that detects a position on a magnetic tape by reproducing relative address signals and absolute address signals recorded on a magnetic tape.
背景技術とその問題点
磁気テープに絶対番地信号を記録し、この信号
を再生してテープ上の位置を検知することは、従
来広く行なわれている。しかしながら、テープを
順方行もしくは逆方向に通常再生時の走行定速の
Ｎ倍の高速（例えば30倍）で走行させる早送り時
または巻戻し時に、磁気ヘツドをテープに通常再
生時よりも軽く接触させて、そのテープに記録さ
れている絶対番地信号を再生しようとしても、絶
対番地信号の周波数スペクトラムが高周波数領域
に移行してしまい、磁気ヘツドと磁気テープとの
軽い接触に起因するドロツプアウトも災いして、
絶対番地信号を確実に再生することは困難であつ
た。BACKGROUND TECHNOLOGY AND PROBLEMS Conventionally, it has been widely practiced to record an absolute address signal on a magnetic tape and to detect the position on the tape by reproducing this signal. However, during fast-forwarding or rewinding, in which the tape is run in the forward or reverse direction at a speed N times higher than the constant running speed during normal playback (for example, 30 times), the magnetic head touches the tape more lightly than during normal playback. If an attempt is made to reproduce the absolute address signal recorded on the tape, the frequency spectrum of the absolute address signal will shift to a high frequency region, and dropouts caused by light contact between the magnetic head and the magnetic tape will also be a disaster. do,
It has been difficult to reliably reproduce absolute address signals.
従つて、例えば語学教材テープ等の所望プログ
ラムを検索するためには、プログラム内容を聞く
ための再生操作とテープを高速走行させるための
早送り又は巻戻し操作とを繰返し行なわねばなら
ず、所望プログラムの位置検知には長い時間と煩
わしい操作とを要した。 Therefore, in order to search for a desired program such as a language learning material tape, it is necessary to repeatedly perform a playback operation to listen to the program contents and a fast forward or rewind operation to run the tape at high speed. Position detection requires a long time and troublesome operations.
発明の目的
本発明はこの点に鑑み、相対番地信号を再生し
ながら、テープを所望位置の近傍まで高速走行さ
せ、次いで定速走行に移行して絶対番地信号を再
生してテープの所望位置を迅速確実に検知するこ
とのできる番地信号再生装置を提供することを目
的とする。OBJECTS OF THE INVENTION In view of this, the present invention has been made to run the tape at high speed to near the desired position while reproducing the relative address signal, and then shift to constant speed running and play back the absolute address signal to locate the desired position on the tape. It is an object of the present invention to provide an address signal reproducing device that can detect an address signal quickly and reliably.
発明の概要
本発明は、相対番地を示す低周波数の信号に絶
対番地を示す高周波数の信号が重畳されてなる複
合番地信号が記録された磁気テープを走行させる
走行手段と、磁気テープから複合番地信号を再生
する再生手段と、再生手段によつて再生された再
生複合番地信号が入力されるハイパスフイルタ
と、そのハイパスフイルタの出力信号が供給さ
れ、走行手段を制御する制御手段と、指定番地入
力手段とを有し、制御手段は、低速走行時に上記
ハイプスフイルタから出力される再生絶対番地信
号と、この再生絶対番地信号と指定番地との比較
により得られる現在番地と指定番地との差と、高
速再生時にハイパスフイルタから出力される再生
相対番地信号を計数することによつて得られるテ
ープの走行長さとに基づいて走行手段を制御する
ようにしたので、相対番地信号を再生しながら、
テープを所望位置の近傍まで高速走行させ、次い
で絶対番地信号を定速再生してテープの所望位置
を迅速確実に検知することができる。SUMMARY OF THE INVENTION The present invention provides a running means for running a magnetic tape on which a composite address signal in which a high frequency signal indicating an absolute address is superimposed on a low frequency signal indicating a relative address; a reproduction means for reproducing the signal; a high-pass filter to which the reproduced composite address signal reproduced by the reproduction means is input; a control means to which the output signal of the high-pass filter is supplied and controlling the traveling means; and the control means includes a reproduction absolute address signal outputted from the hype filter during low speed driving, and a difference between the current address and the designated address obtained by comparing the reproduced absolute address signal and the designated address. Since the running means is controlled based on the running length of the tape obtained by counting the playback relative address signals output from the high-pass filter during high-speed playback, while playing back the relative address signals,
The desired position on the tape can be quickly and reliably detected by running the tape at high speed to near the desired position and then reproducing the absolute address signal at a constant speed.
実施例
本発明番地信号再生装置の実施例の説明に先立
ち、番地信号の記録装置について第１図及び第２
図を参照しながら説明しよう。Embodiment Before explaining the embodiment of the address signal reproducing device of the present invention, FIGS. 1 and 2 show an address signal recording device.
Let me explain with reference to the diagram.
第１図において、１及び２はそれぞれ発振器を
示し、発振器１は中域周波数f1（例えば500Hz）の
正弦波を発生し、発振器２は低域周波数f2（例え
ば30Hz）の正弦波を発生する。両発振器１及び２
の出力をそれぞれスイツチング回路３及び４を介
して混合器５に供給する。６は中央処理装置（以
下CPUと云う）を示し、このCPU６は出力ポー
ト７を介して両スイツチング回路３及び４の開閉
を制御する。８は記録増幅器を示し、この増幅器
８を介して、混合器５の出力を記録磁気ヘツド９
に供給する。 In Figure 1, 1 and 2 indicate oscillators, respectively, where oscillator 1 generates a sine wave with a medium frequency f 1 (for example, 500Hz), and oscillator 2 generates a sine wave with a low frequency f 2 (for example, 30Hz). do. Both oscillators 1 and 2
are supplied to a mixer 5 via switching circuits 3 and 4, respectively. Reference numeral 6 indicates a central processing unit (hereinafter referred to as CPU), and this CPU 6 controls opening and closing of both switching circuits 3 and 4 via an output port 7. Reference numeral 8 indicates a recording amplifier, and the output of the mixer 5 is sent to the recording magnetic head 9 via this amplifier 8.
supply to.
次に、上述の記録装置の動作について説明す
る。例えば、語学教材テープを作製する場合、教
材プログラムをテープの音声トラツクに記録し、
別に設けたキユートラツクにその始端から連続し
た絶対番地信号を逐次記録する。この絶対番地信
号は例えばテープカウンタのカウント値（０〜
999）に対応させる。CPU６がテープカウンタの
カウント値をデジタルデータに変換処理し、第２
図Ａに示すような持続時間Ｔの直列データ信号
を出力ポート７を介してスイツチング回路３に供
給する。このデータ信号は、所定周波数のクロ
ツクパルスを含み、そのクロツクパルスの後続す
る部分に「１」、「０」のデータ部を有するセルフ
クロツク形の信号である。スイツチング回路３は
このデータ信号に応じてオン・オフし、発振器
１の500Hzの正弦波出力を断続的に混合器５に供
給する。一方、スイツチング回路４は、第２図Ｂ
に示すような、パルス幅Ｔの信号を出力ポート
７から受けてオン・オフし、発振器２の30Hzの正
弦波出力を相対番地信号として断続的に混合器５
に供給する。従つて、混合器５の出力は、第２図
Ｃに示すような、30Hzの正弦波に断続的に500Hz
の正弦波を重畳した複合番地信号となる。或はス
イツチング回路３及び４を用いず、発振器１及び
２をそれぞれ信号及び信号で直接キーイング
してもよい。記録増幅器８はこの複合番地信号を
増幅し、記録ヘツド９を介して磁気テープ（図示
せず）のキユートラツクに記録する。 Next, the operation of the above recording apparatus will be explained. For example, when creating a language teaching material tape, the teaching material program is recorded on the audio track of the tape,
Continuous absolute address signals are sequentially recorded from the starting end on a separate cue track. This absolute address signal is, for example, the count value of a tape counter (0 to
999). The CPU 6 converts the count value of the tape counter into digital data, and
A serial data signal of duration T as shown in FIG. A is applied to the switching circuit 3 via the output port 7. This data signal is a self-clock type signal that includes a clock pulse of a predetermined frequency and has a data portion of ``1'' and ``0'' in the subsequent portion of the clock pulse. The switching circuit 3 turns on and off according to this data signal, and intermittently supplies the 500 Hz sine wave output of the oscillator 1 to the mixer 5. On the other hand, the switching circuit 4 is shown in FIG.
A signal with a pulse width T as shown in FIG.
supply to. Therefore, the output of the mixer 5 is a 30Hz sine wave intermittently at 500Hz as shown in FIG. 2C.
It becomes a composite address signal with a sine wave superimposed on it. Alternatively, the oscillators 1 and 2 may be directly keyed with signals, respectively, without using the switching circuits 3 and 4. A recording amplifier 8 amplifies this composite address signal and records it on a cue track of a magnetic tape (not shown) via a recording head 9.
上述のようにして記録された複合番地信号を再
生する、本発明番地信号再生装置の一実施例につ
いて、第３図及び第４図を参照しながら説明しよ
う。 An embodiment of the address signal reproducing apparatus of the present invention, which reproduces the composite address signal recorded as described above, will be described with reference to FIGS. 3 and 4.
この第３図において、１０は再生磁気ヘツドを
示し、この再生ヘツド１０の出力を再生増幅器１
１及び高域フイルタ１２を介して波形整形回路１
３に供給する。１４は入力ポートを示し、この入
力ポート１４を介して波形整形回路１３の出力デ
ータをCPU６ｐに供給する。１５は出力ポート
を示し、この出力ポート１５を介してCPU６ｐ
のテープ走行制御データをテープ走行制御装置１
６に供給する。１７及び１８はそれぞれ供給リー
ル駆動モータ及び巻取リール駆動モータを示し、
１９は磁気ヘツド搭載板及びピンチローラ等の機
構をテープ走行モードに応じて変位させるための
動作切替機構駆動モータを示し、これらの各モー
タ１７，１８及び１９にはテープ走行制御装置１
６のそれぞれに対応する制御回路１６ｓ，１６ｔ
及び１６ｍを介して電源２０を接続し、出力ポー
ト１５から各制御回路に供給される走行制御信号
に応じて各モータを動作させるようになつてい
る。 In FIG. 3, 10 indicates a reproducing magnetic head, and the output of this reproducing head 10 is transferred to a reproducing amplifier
1 and a waveform shaping circuit 1 via a high-pass filter 12.
Supply to 3. Reference numeral 14 indicates an input port, through which the output data of the waveform shaping circuit 13 is supplied to the CPU 6p. 15 indicates an output port, and the CPU 6p is connected via this output port 15.
The tape running control data is sent to the tape running control device 1.
Supply to 6. 17 and 18 indicate a supply reel drive motor and a take-up reel drive motor, respectively;
Reference numeral 19 indicates an operation switching mechanism drive motor for displacing mechanisms such as a magnetic head mounting plate and a pinch roller according to the tape running mode.
Control circuits 16s and 16t corresponding to 6, respectively.
A power source 20 is connected to the motor through the output port 15, and each motor is operated according to a travel control signal supplied from the output port 15 to each control circuit.
本例の動作は次のとおりである。まず、前述の
ような複合番地信号を記録したテープを定速走行
させる通常再生の場合、再生増幅器１１の出力
は、第２図Ｃに示したような、記録増幅器８の入
力信号と同じ複合番地信号になる。従つて、再生
された複合番地信号を高域フイルタ１２に供給し
て、500Hzの断続信号のみを取出し、波形整形回
路１３を通して、第２図Ａに鮫すような、絶対番
地を表示するデータ信号を得ることができる。 The operation of this example is as follows. First, in the case of normal playback in which a tape on which a composite address signal as described above is recorded is run at a constant speed, the output of the reproducing amplifier 11 is at the same composite address as the input signal of the recording amplifier 8, as shown in FIG. 2C. It becomes a signal. Therefore, the reproduced composite address signal is supplied to the high-pass filter 12 to take out only the 500Hz intermittent signal, and then passed through the waveform shaping circuit 13 to produce a data signal representing an absolute address, as shown in FIG. 2A. can be obtained.
しかしながら、高速再生の場合は、テープの走
行速度が定速のＮ倍（例えば30倍）になつている
ので、複合番地信号の再生時間はＴ／Ｎとなり、
再生された複合番地信号のうち、原周波数f1（例
えば500Hz）の絶対番地信号の周波数ばNf1（例え
ば15kHz）となり、原周波数f2（例えば30Hz）の相
対番地信号の周波数はNf2（例えば900Hz）とな
る。このように高周波数領域に移行した絶対番地
信号成分は、ヘツド１０とテープとの接触が不十
分のために、再生ヘツド１０の出力には殆ど現れ
ることなく、中域周波数に移行した第２図Ｄに示
すような相対番地信号成分だけが再生増幅器１１
を介して高域フイルタ１２の出力に現れる。この
出力を波形整形回路１３によつて整形して、第２
図Ｅに示すような相対番地データ信号（以下キユ
ーという）を得ることができる。 However, in the case of high-speed playback, the tape running speed is N times (for example, 30 times) the constant speed, so the playback time of the composite address signal is T/N.
Among the reproduced composite address signals, the frequency of the absolute address signal with the original frequency f 1 (eg 500Hz) is Nf 1 (eg 15kHz), and the frequency of the relative address signal with the original frequency f 2 (eg 30Hz) is Nf 2 ( For example, 900Hz). The absolute address signal component that has shifted to the high frequency range in this way does not appear in the output of the playback head 10 due to insufficient contact between the head 10 and the tape, and has shifted to the mid-range frequency as shown in Figure 2. Only the relative address signal component shown in D is transmitted to the regenerative amplifier 11.
appears at the output of the high-pass filter 12. This output is shaped by the waveform shaping circuit 13, and the second
A relative address data signal (hereinafter referred to as queue) as shown in Figure E can be obtained.
そこで、本例では第４図のフローチヤートに示
したような手順によつて複合番地信号を再先して
テープ上の位置を検知する。最初テープは任意の
AO番地を過ぎた位置で停止しているものとする。
図示しないテンキー等を操作して、所望位置の指
定絶対値番地ANをCPU６ｐに入力する。そうす
ると、CPU６Ｐは先ず早送りのための制御信号
FFを走行制御装置１６に供給し、テープは早送
り走行する。そして、初めてのキユーを得ると
CPU６ｐは走行制御装置１６に番地信号の記録
長以上の所定長の巻戻しのための制御信号RWを
供給し、テープを所定長だけ巻戻す。次にCPU
６ｐは所定長再生のための制御信号PLを供給し、
走行制御装置１６は制御信号PLに従つてテープ
を所定長だけ定速走行させ、第２図Ｃに示したよ
うな複合番地信号を再生する。そして、この複合
番地信号から、前述のようにして、初めてのキユ
ーに対応する絶対番地A1を読取る。この初めて
の絶対番号A1と所望位置の絶対番地ANとの大小
関係がCPU６ｐにおいて比較され、AN＝A1であ
ればここでテープ位置検知を終る。また、AN＞
A1の場合には信号FFが、またAN＜A1の場合に
は信号RWがCPU６ｐから走行制御装置１６に与
えられ、テープを順方向または逆方向に高速走行
させる。そして早送りの場合は（AN−A1）個の
キユーを計数した後、また巻戻しの場合は（A1
−AN＋１）個のキユーを計数した後に、上述の
ように所定長巻戻し及び所定長再生を行なつて所
望絶対番地ANを確実に読み取ることができる。
また、初めての絶対番地A1と所望の絶対番地AN
との２個所でテープの巻戻し及び定速再生を行な
うだけで、その余はテープを高速走行させるの
で、所望位置を迅速に検知することができる。 Therefore, in this example, the position on the tape is detected by using the composite address signal again in accordance with the procedure shown in the flowchart of FIG. First tape is optional
Assume that it has stopped at a position past address A O.
By operating a numeric keypad (not shown) or the like, input the specified absolute value address A N of the desired position to the CPU 6p. Then, CPU6P first sends a control signal for fast forwarding.
FF is supplied to the running control device 16, and the tape runs in fast forward motion. And when you get your first Kyuu
The CPU 6p supplies the travel control device 16 with a control signal RW for rewinding a predetermined length that is longer than the recording length of the address signal, and rewinds the tape by a predetermined length. Then the CPU
6p supplies a control signal PL for predetermined length reproduction;
The running control device 16 causes the tape to run at a constant speed for a predetermined length in accordance with the control signal PL, and reproduces a composite address signal as shown in FIG. 2C. Then, from this composite address signal, as described above, the absolute address A1 corresponding to the first queue is read. The magnitude relationship between this first absolute number A 1 and the absolute address A N of the desired position is compared in the CPU 6p, and if A N =A 1 , tape position detection ends here. Also, A N >
In the case of A 1 , the signal FF is applied, and in the case of A N <A 1 , the signal RW is applied from the CPU 6p to the running control device 16 to cause the tape to run at high speed in the forward or reverse direction. Then, in the case of fast forwarding, after counting (A N − A 1 ) cues, and in the case of rewinding, (A 1
After counting -A N +1) queues, the desired absolute address A N can be reliably read by performing predetermined length rewind and predetermined length playback as described above.
Also, the first absolute address A 1 and the desired absolute address A N
The tape is simply rewound and played back at a constant speed at two points, and the tape is then run at high speed, so that the desired position can be quickly detected.
なお、本発明は上述の実施例のみに限定される
ものではなく、多くの変形が可能であることは当
業者の容易に理解し得るところであろう。 It should be noted that those skilled in the art will easily understand that the present invention is not limited to the above-described embodiments, and that many modifications are possible.
発明の効果
以上詳述のように、本発明番地信号再生装置に
よれば、相対番地信号を再生しながらテープを所
望位置の近傍まで高速走行させ、次いで絶対番地
信号を定速再生するようにしたので、テープの所
望位置を迅速確実に検知することができる。Effects of the Invention As detailed above, according to the address signal reproducing device of the present invention, the tape is run at high speed to the vicinity of a desired position while reproducing the relative address signal, and then the absolute address signal is reproduced at a constant speed. Therefore, the desired position of the tape can be detected quickly and reliably.
第１図は本発明に関連する番地信号記録装置の
一例を示すブロツク図、第２図は本発明の説明に
供する番地信号の波形図、第３図は本発明番地信
号再生装置の一実施例を示すブロツク図、第４図
は本発明によるテープ走行制御プログラムを示す
フローチヤートである。
１及び２は発振器、３及び４はスイツチング回
路、６及び６ｐはCPU、７及び１５は出力ポー
ト、９は記録ヘツド、１０は再生ヘツド、１２は
高域フイルタ、１３は波形整形回路、１４は入力
ポート、１６は走行制御装置である。
FIG. 1 is a block diagram showing an example of an address signal recording device related to the present invention, FIG. 2 is a waveform diagram of an address signal used to explain the present invention, and FIG. 3 is an embodiment of the address signal reproducing device of the present invention. FIG. 4 is a flowchart showing a tape travel control program according to the present invention. 1 and 2 are oscillators, 3 and 4 are switching circuits, 6 and 6p are CPUs, 7 and 15 are output ports, 9 is a recording head, 10 is a playback head, 12 is a high-pass filter, 13 is a waveform shaping circuit, and 14 is a Input port 16 is a travel control device.
Claims (1)
示す高周波数の信号が重畳されてなる複合番地信
号が記録された磁気テープを走行させる走行手段
と、 上記磁気テープから上記複合番地信号を再生す
る再生手段と、 上記再生手段によつて再生された再生複合番地
信号が入力されるハイパスフイルタと、 該ハイパスフイルタの出力信号が供給され、上
記走行手段を制御する制御手段と、 指定番地入力手段とを有し、 上記制御手段は、低速走行時に上記ハイパスフ
イルタから出力される再生絶対番地信号と、この
再生絶対番地信号と上記指定番地との比較により
得られる現在番地と指定番地との差と、高速再生
時に上記ハイパスフイルタから出力される再生相
対番地信号を計数することによつて得られるテー
プの走行長さに基づいて上記走行手段を制御する
ことを特徴とする番地信号再生装置。[Scope of Claims] 1. A running means for running a magnetic tape on which a composite address signal is recorded, in which a low frequency signal indicating a relative address is superimposed with a high frequency signal indicating an absolute address; a reproduction means for reproducing the composite address signal; a high-pass filter to which the reproduced composite address signal reproduced by the reproduction means is input; and a control means to which an output signal of the high-pass filter is supplied and for controlling the traveling means. , designated address input means, and the control means inputs a reproduced absolute address signal outputted from the high-pass filter during low-speed driving, and a current address obtained by comparing the reproduced absolute address signal with the designated address. The address signal is characterized in that the running means is controlled based on the running length of the tape obtained by counting the difference from the address and the playback relative address signal output from the high-pass filter during high-speed playback. playback device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12202183A JPS6013379A (en) | 1983-07-05 | 1983-07-05 | Reproducing device of address signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12202183A JPS6013379A (en) | 1983-07-05 | 1983-07-05 | Reproducing device of address signal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6013379A JPS6013379A (en) | 1985-01-23 |
| JPH0544752B2 true JPH0544752B2 (en) | 1993-07-07 |
Family
ID=14825617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12202183A Granted JPS6013379A (en) | 1983-07-05 | 1983-07-05 | Reproducing device of address signal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6013379A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0535491Y2 (en) * | 1987-04-20 | 1993-09-08 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53102711A (en) * | 1977-02-18 | 1978-09-07 | Matsushita Electric Ind Co Ltd | Information retrieving device for magnetic tape |
-
1983
- 1983-07-05 JP JP12202183A patent/JPS6013379A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53102711A (en) * | 1977-02-18 | 1978-09-07 | Matsushita Electric Ind Co Ltd | Information retrieving device for magnetic tape |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6013379A (en) | 1985-01-23 |
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