JPS6053994B2 - Disc-shaped information recording medium reproducing device - Google Patents
Disc-shaped information recording medium reproducing deviceInfo
- Publication number
- JPS6053994B2 JPS6053994B2 JP55113759A JP11375980A JPS6053994B2 JP S6053994 B2 JPS6053994 B2 JP S6053994B2 JP 55113759 A JP55113759 A JP 55113759A JP 11375980 A JP11375980 A JP 11375980A JP S6053994 B2 JPS6053994 B2 JP S6053994B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- recording medium
- disc
- information recording
- frequency
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
Description
【発明の詳細な説明】
本発明は円盤状情報記録媒体再生装置に係り、円盤状
情報記録媒体を回転するモータの定速サーボ回路の基準
信号発振器の発振周波数を所定の周波数とすることによ
り、再生素子強制移相用パルスを生成するための倍速同
期信号を上記基準信号発振器を共用して使用し得、好適
なトリツクブレ。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a disk-shaped information recording medium reproducing device, and by setting the oscillation frequency of a reference signal oscillator of a constant speed servo circuit of a motor that rotates a disk-shaped information recording medium to a predetermined frequency, The reference signal oscillator can be used in common with the double-speed synchronization signal for generating pulses for forced phase shifting of the reproducing element, and is suitable for trick blur.
イ等の再生を行ない得る円盤状情報記録媒体再生装置を
提供することを目的とする。 本出願人は先に特願昭５
２−２５２６０号（特公昭５９ 一２１１０４号）その
他により、針案内溝を形成することなく主要情報信号並
びに第１乃至第３のトラッキング制御用参照信号（以下
トラッキング信号という）が夫々幾何学的形状の変化と
して記録された電極機能を有する円盤状情報記録媒体、
及びそれを電極を有する再生針との相対的↑Ｂ動走査に
より上記主要情報信号並びに第１乃至第３のトラッキン
グ信号を静電容量の変化として読取り再生する再生装置
を提案した。An object of the present invention is to provide a disc-shaped information recording medium reproducing device capable of reproducing data such as A. The applicant had previously applied for a patent application in 1973.
No. 2-25260 (Japanese Patent Publication No. 59-121104) and others, the main information signal and the first to third tracking control reference signals (hereinafter referred to as tracking signals) each have a geometric shape without forming a needle guide groove. a disc-shaped information recording medium having an electrode function recorded as a change in
We have proposed a reproducing device that reads and reproduces the main information signal and the first to third tracking signals as changes in capacitance by relative ↑B motion scanning with a reproducing needle having an electrode.
また、上記の本出願人の提案になる円盤状情報記録媒体
は映像信号等が主要情報信号として螺旋状の主トラック
に１回転宛４７イールド記録されており、かつ、主要情
報信号の記録周波数帯域よりも低域周波数で、互いに相
異なる周波数の第１及び第２のトラッキング信号ｆ、、
及びｆｐ２が夫々記録媒体の１回転周期毎に切換えられ
、かつ、水平帰線消去期間部分に対応してバースト状に
相隣る上記主トラック間の中間部分に副トラックを形成
して記録されており、更にｆｐｈ、ｆｐ２の切換接続部
分（垂直ブランキング期間内にある）には、トラッキン
グサーボ回路のトラッキング極性を切換えるための第３
のトラッキング信号ｆｐ、が主要情報信号に影響を与え
ないよう所定レベル以下のレベルで記録されている。
第１図はこの円盤状情報記録媒体の記録トラッキング信
号の記録配置鑑係を模式的に示す図で、同図中のＯ印は
ｆｐ、（又はｆｐ２）記録位置、Δ印はｆｐ。In addition, in the disk-shaped information recording medium proposed by the applicant mentioned above, a video signal, etc. is recorded as the main information signal on a spiral main track at a yield of 47 per revolution, and the recording frequency band of the main information signal is The first and second tracking signals f, having different frequencies lower than that of
and fp2 are switched every rotation period of the recording medium, and the recording is performed by forming a sub-track in the middle between the adjacent main tracks in a burst pattern corresponding to the horizontal blanking period. Furthermore, at the switching connection part of fph and fp2 (within the vertical blanking period), there is a third switch for switching the tracking polarity of the tracking servo circuit.
The tracking signal fp is recorded at a level below a predetermined level so as not to affect the main information signal.
FIG. 1 is a diagram schematically showing the recording arrangement of recording tracking signals on this disc-shaped information recording medium, in which O mark indicates the fp (or fp2) recording position, and Δ mark indicates fp.
（又はｆｐ、）記録位置を示し、更に実線は主トラック
のトラック中心線を示す。また第３のＦラッキング信号
チ，，は第１図中、破線で示す位置に記録される。本発
明は特にこの本出願人の提案になる円盤状情報記録媒体
の再生装置において、ディスクの回転と再生素子強制移
送パルスとを同期させるべく、ディスク回転用モータの
定速サーボ回路の基準信号発生用発振器の出力を所定周
波数に選定したものであり、以下図面と共にその一実施
例番こつき説明する゜。(or fp) indicates the recording position, and the solid line indicates the track center line of the main track. Further, the third F racking signal Q, , is recorded at the position indicated by the broken line in FIG. The present invention is particularly directed to the generation of a reference signal for a constant speed servo circuit of a motor for rotating a disc in order to synchronize the rotation of the disc and the forced transfer pulse of the reproducing element in a reproducing apparatus for a disc-shaped information recording medium proposed by the present applicant. The output of the oscillator is selected to have a predetermined frequency, and one embodiment will be explained in detail below with reference to the drawings.
第２図は本発明装置の一実施例のブロック系統図、第３
図は第１図示の円盤状情報記録媒体と再生針との再生状
態を示す部分拡大斜視図を示す。FIG. 2 is a block system diagram of one embodiment of the device of the present invention, and FIG.
The figure shows a partially enlarged perspective view showing the reproduction state of the disc-shaped information recording medium and the reproduction needle shown in the first figure.
両図中、１は第１図示の記録トラックパターンを有する
回転情報記録媒体（以下「ディスク」と略す）で、第２
図に示すターンテーブル２上に載置せしめられてモータ
３によリターンテーブル２と共に高速で同期回転せしめ
られる。ディスク１の表面上には第３図に示す如く平坦
面２６とビット２？とが繰り返されてなる主要情報信号
記録主トラックと、２８で示すビットと平坦面２６との
繰り返しにょるトラッキング信号Ｆｐ，記録副トラック
と、２９で示すビットと平担面２６との繰り返しにょる
トラッキング信号Ｆｐ。記録副トラックとが夫々形成さ
れており、矢印方向へ主要情報信号がＮＴＳＣ方式カラ
ー映像信号のようなフィールド周波数６０Ｊ−（ｚの映
像信号の場合は９００ｒｐｍで回転せしめられる（なぉ
、ＰＡＬ方式、ＳＥＣＡＭ方式等のカラー映像信号の場
合は７５０ｒｐｍで回転せしめられる。）。また４は再
生針て、その後端面に電極４ａが蒸着固定されており、
４ｂで示す底部がディスク１の表面と摺動せしめられ、
電極４ａとディスク１との間に形成される静電容量が断
続するビット列の変化に応じて変化することを検出し、
高周波信号に変換する。In both figures, 1 is a rotating information recording medium (hereinafter abbreviated as "disk") having the recording track pattern shown in the first figure, and the second
It is placed on the turntable 2 shown in the figure and rotated synchronously with the return table 2 by a motor 3 at high speed. On the surface of the disk 1 are a flat surface 26 and a bit 2? as shown in FIG. A main information signal recording main track consisting of a repetition of , a tracking signal Fp consisting of a repetition of a bit indicated by 28 and a flat surface 26 , a recording sub-track consisting of a repetition of a bit indicated by 29 and a flat surface 26 Tracking signal Fp. The main information signal is rotated in the direction of the arrow at a field frequency of 60 J-(900 rpm in the case of a video signal of 60J-z) such as an NTSC system color video signal. In the case of a color video signal such as a SECAM system, it is rotated at 750 rpm.) 4 is a reproduction needle, and an electrode 4a is fixed to the rear end surface by vapor deposition.
The bottom portion indicated by 4b is made to slide on the surface of the disk 1,
detecting that the capacitance formed between the electrode 4a and the disk 1 changes in accordance with changes in the intermittent bit string;
Convert to high frequency signal.
この再生針４は螺旋状主トラックに沿ってフィード機構
（図示せず）によつてディスク１の回転軸方向へ移送せ
しめられる。再生針４により読取られた上記高周波信号
（既記録信号）は、第２図に示す前置増幅器５を経て復
調回路６、チＰ沁出器７及びトラッキング回路８に夫々
供給される。The playback needle 4 is moved along the spiral main track in the direction of the rotation axis of the disk 1 by a feed mechanism (not shown). The high frequency signal (recorded signal) read by the reproducing needle 4 is supplied to a demodulator 6, a chip extractor 7 and a tracking circuit 8 via a preamplifier 5 shown in FIG. 2, respectively.
復調回路６は主トラックから再生された主要情報信号を
復調する。またＦ，，検出器７は前記第３のトラッキン
グ信号Ｆｐ。を再生信号中より周波数選択して取り出し
、また第３のトラッキング信号チＰ３がドロップアウト
等により得られないときにはＦｐ３に相当する信号を出
力し、トラッキング回路８に前置増幅器５よりの再生信
号と共に供給する。トラッキング回路８を再生信号中よ
り弁別分離した前記第１及び第２のトラッキング信号Ｆ
ｐ，及びＦｐ。The demodulation circuit 6 demodulates the main information signal reproduced from the main track. Further, F,, the detector 7 receives the third tracking signal Fp. is extracted by selecting a frequency from the reproduced signal, and when the third tracking signal P3 cannot be obtained due to dropout etc., a signal corresponding to Fp3 is outputted and sent to the tracking circuit 8 together with the reproduced signal from the preamplifier 5. supply The first and second tracking signals F which are discriminated and separated from the reproduced signal by the tracking circuit 8
p, and Fp.
を差動増幅器にてレベル比較してトラッキングずれ量に
応じたレベルで、かつ、トラッキングずれ方向に応じた
極性のトラッキング誤差信号を出力する。このとき、デ
ィスク１の１回転周期毎に上記再生トラッキング信号Ｆ
ｐ３によつてトラッキング極性が切換えられる。上記ト
ラッキング誤差信号は駆動回路９により所要の電力に変
換された後トラッキングコイル１口に供給され、再生針
４のトラックすれを補正する。ノーマル再生時は以上の
動作を行なう本出願人の提案になる再生装置によれば、
前記したようにディスク１には針案内溝が形成されてい
ないから、ステイルモーシヨン再生、スローモーシヨン
再生、ファーストモーション再生、高速位置検索等の種
々の所謂トリツクプレイを行ない得るものであるが、こ
のトリツクプレイ時には再生針４を相隣る主トラックへ
１トラックピッチ分強制的に移送せしめる強制移送パル
ス（以下「キックパルス」という）がトラッキングコイ
ル１０に印加される。A differential amplifier compares the levels and outputs a tracking error signal with a level corresponding to the amount of tracking deviation and a polarity corresponding to the direction of tracking deviation. At this time, the reproduction tracking signal F is generated every rotation period of the disk 1.
Tracking polarity is switched by p3. The tracking error signal is converted into the required power by the drive circuit 9 and then supplied to one tracking coil to correct the mistracking of the reproduction needle 4. According to the playback device proposed by the present applicant, which performs the above operations during normal playback,
As mentioned above, since the disk 1 is not provided with a needle guide groove, it is possible to perform various so-called trick plays such as still motion playback, slow motion playback, fast motion playback, and high speed position search. During trick play, a forced transfer pulse (hereinafter referred to as a "kick pulse") is applied to the tracking coil 10 for forcibly moving the reproduction needle 4 by one track pitch to the adjacent main track.
本発明はこのキックパルス生成の基になる倍速同期信号
を、モータ３の定速サーボ回路における基準信号発振器
から共用して取り出し得るよう構成したものであり、以
下その動作につき詳細に説明する。The present invention is configured so that the double-speed synchronizing signal, which is the basis for generating kick pulses, can be shared and extracted from the reference signal oscillator in the constant-speed servo circuit of the motor 3, and its operation will be described in detail below.
第２図において、１１は水晶発振器で、本実施例ではそ
の発振器周波数を３．３９８６ＭＨｚに選定した点に特
徴を有する。In FIG. 2, numeral 11 is a crystal oscillator, and this embodiment is characterized in that the oscillator frequency is selected to be 3.3986 MHz.
すなわち、いまモータ３の回転数を検出する回転検出器
１５がモータ３の１回転宛５睡のパルスを出力するもの
であり、またＮ’ＫＣ方式カラー映像信号記録ディスク
とＰＡＬ方式（又はＳＥＣＡＭ方式）カラー映像信号デ
ィスクとの互換再生を行ない得るようにし、更に再生針
４はディスク１の１回転宛最大６４回キックさせるもの
とする。たた七、上記最大６４回のキックはディスク１
の１回転を等間隔で７２（＝６４＋４×２）分割し、各
分割地点でキックできるように構成し、そのうち垂直同
期信号検出時点直前（又は直後）の２分割地点では後述
の理由でキックしないようにし、それにより結局ディス
ク１回転宛最大計６４回残りの各分割地点でキックでき
るようにしたものである。また上記キックのためのキッ
クパルス生成用倍速同期信号の３倍の周波数の信号を表
示やキー入力取込用のマイクロコンピュータ２３の割込
み信号とするものとする。しかして、水晶発振器１１よ
り取り出された３．３９８６Ｍ圧の発振周波数信号は青
分周器１２に供給され、ここで詣分周されて（すなわち
Ｎ＝７２Ｘ３）、１５．７３４ｋ圧というＮＴＳＣ方式
カラー映像信号の水平走査周波数に等しい周波数とされ
る。That is, the rotation detector 15, which detects the rotational speed of the motor 3, outputs 5 pulses for each revolution of the motor 3, and it also outputs 5 pulses per rotation of the motor 3. ) The playback needle 4 is designed to be compatible with color video signal discs, and the playback needle 4 is kicked a maximum of 64 times per revolution of the disc 1. Tatashichi, the maximum 64 kicks listed above are Disk 1
One revolution of is divided into 72 (=64 + 4 x 2) at equal intervals, and the configuration is such that kicking can be performed at each dividing point, and kicking is not performed at the two dividing points immediately before (or immediately after) the vertical synchronization signal detection point for the reason described later. As a result, it is possible to kick at each of the remaining division points a maximum of 64 times per revolution of the disc. Further, a signal having a frequency three times that of the double-speed synchronization signal for generating a kick pulse for the kick is used as an interrupt signal for the microcomputer 23 for displaying and receiving key inputs. Thus, the oscillation frequency signal of 3.3986M pressure taken out from the crystal oscillator 11 is supplied to the blue frequency divider 12, where it is frequency-divided (that is, N=72X3), and the NTSC color signal of 15.734K pressure The frequency is equal to the horizontal scanning frequency of the video signal.
この？分周器１２より取り出された水平走査周波数に等
しい周波数の信号はプログラマブル分周器１３に供給さ
れ、ここで入力端子１７よりの制御信号に応じて吉分周
又は入分周された後位相比較器１４に基準信号として供
給され、前記回転検出器１５よりの回転検出信号と位相
比較された後モータ３に印加され、その回転数を制御す
る。ここで、１回転宛４フィールドのｖ田Ｃ方式カラー
映像信号がディスク１に記録されている場合は、１回転
宛１０５０本の水平走査線が記録されているから、正規
の回転数９００ｒ′Ｐｍでは回転検出器１５よりのディ
スク１回転宛５陥取り出される回転検出パルスの１個の
パルス当り、２１本の水平走査線が再生されていること
になるから、上記プログラマブル分周器１３の分周比は
吉に設定される。一方、１回転宛４フィールドのＰＡＬ
方式及びＳＥＣＡＭ方式カラー映像信号がディスク１に
記録されている場合には、１回転宛１２５０本の水平走
査線が記録されているから、回転検出パルスの１個あた
り２５本の水平走査線が再生されるよう、プログラマブ
ル分周器１３の分周比は入に設定される。これにより、
上記のような本来ＮＴＳＣ方式カラー映像信号が記録さ
れているディスクを再生する再生装置でＰＡｌ．方式及
びＳＥＣＡＭ方式カラー映像信号が記録されたディスク
を再生する場合には、そのディスクの再生水平走査周波
数がその再生装置に予め定められているＮ′ＹＳＣ方式
の水平走査周波数となるように制御される。これにより
再生装置内の回路を変更することなくＰＡｌ．方式又は
ＳＥＣＡＭカラー映像信号記録ディスクを再生すること
ができる（詳細は本出願人の提案になる特願昭５５−６
１９９８号参照のこと）。このようにして、水晶発振器
１１の出力発振周波信号はモータ３の定速サーボ回路の
基準信号として用いられるが、本発明では更にキックパ
ルス生成のための倍速同期信号を得るためにも用いるも
のであり、このために水晶発振器１１の出力発振周波信
号はまずプログラマブル分周器１６に供給され、ここで
入力端子１７よりの制御信号により分周器１３と同様に
Ｎ千℃方式カラー映像信号記録ディスク再生時には分周
比が吉に設定され、ＰＡＬ方式又はＳＥＣＡＭ方式カラ
ー映像信号記録ディスク再生時には分周比が入に設定さ
れる。this? A signal with a frequency equal to the horizontal scanning frequency taken out from the frequency divider 12 is supplied to a programmable frequency divider 13, where it is divided into a positive frequency or an input frequency according to a control signal from an input terminal 17, and then phase comparison is performed. The reference signal is supplied to the motor 3 as a reference signal, compared in phase with the rotation detection signal from the rotation detector 15, and then applied to the motor 3 to control its rotation speed. Here, if a vta C color video signal of 4 fields per revolution is recorded on disk 1, 1050 horizontal scanning lines are recorded per revolution, so the normal number of revolutions is 900r'Pm. In this case, 21 horizontal scanning lines are reproduced per pulse of the rotation detection pulse taken out from the rotation detector 15 for each rotation of the disk, so the frequency division of the programmable frequency divider 13 is The ratio is set to Kichi. On the other hand, PAL of 4 fields per rotation
When a SECAM color video signal is recorded on disk 1, 1250 horizontal scanning lines are recorded for one rotation, so 25 horizontal scanning lines are reproduced for each rotation detection pulse. The frequency division ratio of the programmable frequency divider 13 is set to ON so that This results in
PAl. When playing back a disc on which a color video signal of the N'YSC system and the SECAM system is recorded, the reproduction horizontal scanning frequency of the disc is controlled so that it becomes the horizontal scanning frequency of the N'YSC system predetermined for the reproduction device. Ru. This allows PAl. without changing the circuit inside the playback device. system or SECAM color video signal recording disk (details can be found in Japanese Patent Application No. 55-6 proposed by the present applicant).
1998). In this way, the output oscillation frequency signal of the crystal oscillator 11 is used as a reference signal for the constant speed servo circuit of the motor 3, but in the present invention, it is also used to obtain a double speed synchronization signal for kick pulse generation. For this purpose, the output oscillation frequency signal of the crystal oscillator 11 is first supplied to the programmable frequency divider 16, and here, like the frequency divider 13, the output oscillation frequency signal of the crystal oscillator 11 is supplied to the programmable frequency divider 16, and the output frequency signal from the N,000 degree Celsius color video signal recording disk is controlled by the control signal from the input terminal 17. During playback, the frequency division ratio is set to positive, and during playback from a PAL system or SECAM system color video signal recording disk, the frequency division ratio is set to on.
この分周器１６の出力信号は分周器１８に供給され、こ
こでふ分周されて倍速同期信号周波数ｆ！の３倍の周波
数の信号とされる。この信号は後述する表示、キー入力
取込用マイクロコンピュータ（以下１キーコンョという
）２３の割込み信号といて供給される一方、分周器１９
に供給され、ここでＡ分周されて所定周波数１．０７８
９ｋＨＺとされた後ゲノート回路２０に供給される。こ
のゲート回路２０の出力信号はカウンタ２１に供給され
、ここで１６個のパルスを計数する毎に１個のパルスが
出力されて単安定マルチバイブレータ２２をトリガーす
る。これにより、単安定マノｖチパイプレータ２２・は
第４図Ｂに示す如く一定期間（分周器１９の出力パルス
の約２．５周期）ローレベルの信号をゲート回路２０に
ゲート信号として印加し、その期間のみゲートを閉じさ
せる。このようにして、ゲート回路２０は分周器１９）
の出力パルスを１帽通過させた後２個遮断する動作を繰
り返し、第４図Ａに示す如き波形の前記倍速同期信号Ｆ
，を出力し、上記カウンタ２１の計数人力端子及び装置
動作制御用マイクロコンピュータ（以下０メカコンョと
いう）２４の割込み信号入力端子、更にキーコン２３に
夫々印加される。The output signal of this frequency divider 16 is supplied to a frequency divider 18, where it is frequency-divided by the double-speed synchronization signal frequency f! It is assumed that the signal has a frequency three times that of . This signal is supplied as an interrupt signal to the microcomputer 23 for display and key input capture (hereinafter referred to as 1 key controller), which will be described later, and is also supplied to the frequency divider 19.
The frequency is divided by A to obtain a predetermined frequency of 1.078.
After being set to 9kHz, it is supplied to the Genoto circuit 20. The output signal of this gate circuit 20 is supplied to a counter 21, which outputs one pulse every time 16 pulses are counted to trigger a monostable multivibrator 22. As a result, the monostable mano-V chip piper 22 applies a low level signal to the gate circuit 20 as a gate signal for a certain period of time (approximately 2.5 cycles of the output pulse of the frequency divider 19) as shown in FIG. 4B. The gate will be closed only during that period. In this way, the gate circuit 20 becomes the frequency divider 19)
By repeating the operation of passing one output pulse and cutting off two output pulses, the double-speed synchronization signal F having a waveform as shown in FIG. 4A is obtained.
, and are applied to the counting manual terminal of the counter 21, the interrupt signal input terminal of the device operation control microcomputer (hereinafter referred to as 0 mechanical controller) 24, and the key controller 23, respectively.
なお、カウンタ２１はＦＰ３の検出器７の出力によつて
リセットされる。キーコン２３は分周器１８からのパル
ス３ｆＩ入力がある毎にゲート回路２０からの倍速同期
信号Ｆ，入力があるか否かを判断して、入力があるとき
にテンキー等からの入力や表示の取込み動作を行なう。Note that the counter 21 is reset by the output of the detector 7 of the FP3. The key controller 23 judges whether or not there is an input of the double-speed synchronization signal F from the gate circuit 20 every time there is a pulse 3fI input from the frequency divider 18, and when there is an input, it changes the input from the numeric keypad or the display. Perform the import operation.
またメカコン２４は上記倍速同期信号ｆ１が入力された
時には、他の処理を中断してキーコン２３からのデータ
に従つて再生針４のキックを行なわせるのか否かを判断
してキックを行なわせる場合には倍速同期信号を倍速比
に応じて選択して正極性パルスと負極性パルスとを１個
づつ交互に出力する。その出力順序はキック方向に応じ
て異なる。キックパルス発生器２５は上記メカコン２４
からの正極性及び負極性パルスを加算して所定のキック
パルスを発生する回路で、例えばメカコン２４から第５
図Ａに示す正極性パルスと同図Ｂに示す負極性パルスと
が出力された時には同図Ｃに示す如き波形のキックパル
スを発生出力しトラッキング回路８、駆動回路９を夫々
経てトラッキングコイル１０に印加され、再生針４を１
トラックピッチ分強制的にディスク内周方向（又は外周
方向）へ移送せしめる。Further, when the double speed synchronization signal f1 is inputted, the mechanical controller 24 interrupts other processing and determines whether or not to cause the playback needle 4 to kick according to the data from the key controller 23, and performs the kick. In this case, a double speed synchronizing signal is selected according to the double speed ratio, and one positive polarity pulse and one negative polarity pulse are outputted alternately. The output order differs depending on the kick direction. The kick pulse generator 25 is connected to the mechanical controller 24 mentioned above.
This circuit generates a predetermined kick pulse by adding the positive and negative pulses from the mechanical controller 24 to the fifth
When the positive pulse shown in Figure A and the negative pulse shown in Figure B are output, a kick pulse with a waveform as shown in Figure C is generated and outputted to the tracking coil 10 via the tracking circuit 8 and drive circuit 9, respectively. applied, regenerating needle 4 to 1
The disk is forcibly moved toward the inner circumference (or toward the outer circumference) by the track pitch.
例えばＦ，３記録位置でのみ１回転毎に外周方向へキッ
クすると再生針４は常に同一トラック上を走査すること
になるからステイルモーシヨン再生が行なえ、また例え
ばＦ，３記録位置に対向する垂直同期信号記録位置での
み１回転毎に内周方向へキックすると再生針４は１回転
前のトラックよりも２トラック分内周のトラックを走査
することになるから２倍速フオワード再生が行なえる。
本実施例によれば、ディスク１の１回転宛最大６４回キ
ックパルスを出力することができるから、再生針４を内
周方向へディスク１回転宛６４回キックさせるとら倍速
フオワード再生ができ、外周方向へ６４回キックさせる
と６３倍速バックワード再生ができる。なお、上記倍速
同期信号は第４図Ａに示す如く分周器１９の出力パルス
ｍ個のうち２個を欠落させているが、これはこの欠落期
間においてキーコン２３とメカコン２４との間でデータ
転送を行なうためである。For example, if the playback needle 4 is kicked toward the outer circumference every rotation only at the F,3 recording position, the playback needle 4 will always scan on the same track, so stay motion playback can be performed. If the playback needle 4 is kicked toward the inner circumference every rotation only at the synchronization signal recording position, the playback needle 4 will scan a track that is two tracks inner than the track before one rotation, so that double-speed forward playback can be performed.
According to this embodiment, kick pulses can be output a maximum of 64 times per one revolution of the disc 1, so by kicking the reproducing needle 4 toward the inner circumference 64 times per one revolution of the disc, double-speed forward reproduction is possible, and If you kick in the direction 64 times, you can play backwards at 63x speed. Note that, as shown in FIG. 4A, the double-speed synchronization signal has two of the m output pulses of the frequency divider 19 missing, but this is because the data is lost between the key controller 23 and the mechanical controller 24 during this missing period. This is to perform transfer.
本発明によれば、上記したようにモータ３の定速サーボ
回路の基準信号をキックパルス生成のために倍速同期信
号発生のためにも共用して使用しているので、モータ３
の回転と倍速同期信号とは同期せしめられており、たと
えモータ３の回転数が変化しても、ディスク１回転宛キ
ックする数が同じであれば（倍率比が同じであれば）再
生針４は常にディスク上正規回転時と同じ位置でキック
されることになる。According to the present invention, as described above, the reference signal of the constant speed servo circuit of the motor 3 is also used for generating the kick pulse and for generating the double speed synchronization signal.
The rotation of the motor 3 is synchronized with the double speed synchronization signal, so even if the rotation speed of the motor 3 changes, if the number of kicks per revolution of the disc is the same (if the magnification ratio is the same), the playback needle 4 will change. will always be kicked at the same position on the disc as during regular rotation.
なお、以上の説明は本出願人は先に提案した円盤状情報
記録媒体の再生装置に関して行なつたが、再生素子とし
て再生針の代りにレーザービーム等の光を用いて記録信
号を読取り再生する装置にも適用できる。The above explanation has been made regarding the reproducing device for a disk-shaped information recording medium proposed earlier by the present applicant, but the recording signal is read and reproduced using light such as a laser beam as a reproducing element instead of a reproducing needle. It can also be applied to equipment.
また上記実施例において、ＰＡＬ方式又はＳＥＣＡＭ方
式カラー映像信号記録ディスクを本来再生する再生装置
では、水晶発振器１１の出力発振周波数は３．３７５ｒ
！４ＨＺに選定されるが、分周器１３，１６，１８，１
９の分周比は上記実施例と同一の値でよい。Further, in the above embodiment, in a playback device that originally plays back a PAL or SECAM color video signal recording disk, the output oscillation frequency of the crystal oscillator 11 is 3.375r.
! Although it is selected as 4Hz, frequency dividers 13, 16, 18, 1
The frequency division ratio of 9 may be the same value as in the above embodiment.
上述の如く、本発明になる円盤状情報記録媒体再生装置
は、円盤状情報記録媒体を定速回転させるためのモータ
サーボ回路の基準信号を発生出力する発振器の出力信号
を、円盤状情報記録媒体の１回転期間当りＭ個以上発生
するパルス列である倍速同期信号を生成するための信号
としても使用し、かつ、発振器の出力信号周波数を、本
来再生すべき円盤状情報記録媒体の記録信号の水平走査
周波数と、円盤状情報記録媒体の１回転期間を等間隔で
分割したときの分割数Ｍ（Ｍは任意の複・数）との積の
整数倍の周波数に選定したため、上記記録媒体及びその
回転用モータの回転と倍速同期信号とを同期させること
ができ、よつて上記記録媒体の１回転宛再生素子を半径
方向上強制的に移送させる数が同じである場合は回転数
の変化に・拘らず常に同じ位置で移送させることができ
、また上記発振器を共用したので、回路構成が簡単で、
かつ、安価に構成でき、更に水晶発振器を用いることに
より安定な動作を行なわしめることができる等の特長を
有するものである。As described above, the disc-shaped information recording medium reproducing apparatus according to the present invention uses the output signal of the oscillator that generates and outputs the reference signal of the motor servo circuit for rotating the disc-shaped information recording medium at a constant speed to the disc-shaped information recording medium. It is also used as a signal to generate a double-speed synchronization signal, which is a pulse train of M or more per rotation period of The frequency was selected to be an integral multiple of the product of the scanning frequency and the number of divisions M (M is any plural number) when one rotation period of the disk-shaped information recording medium is divided at equal intervals. The rotation of the rotation motor and the double speed synchronization signal can be synchronized, and therefore, if the number of reproducing elements to be forcibly moved in the radial direction for one rotation of the recording medium is the same, the change in the rotation speed The circuit configuration is simple because the oscillator mentioned above is shared, and the oscillator is shared.
Moreover, it has features such as being able to be constructed at low cost, and also being able to perform stable operation by using a crystal oscillator.
第１図は本出願人は先に提案した円盤状情報記録媒体の
トラッキング制御用参照信号記録配置を模式的に示す図
、第２図は本発明装置の一実施例を示すブロック系統図
、第３図は第１図示の円盤状情報記録媒体と再生装との
再生状態を示す部分拡大斜視図、第４図Ａ，Ｂ及び第５
図Ａ−Ｃは夫々第２図示装置の動作説明用信号波形図で
ある。
１・・・円盤状情報記録媒体（ディスク）、３・・・モ
ータ、４・・・再生針、１１・・・水晶発振器、１２・
・・Ａ分周器、１３，１６・・・プログラマブル分周器
、１４・・・位相比較器、１５・・・回転検出器、１８
，１９・・・分周器、２０・・・倍速同期信号出力用ゲ
ート回路、２３・・・表示、キー入力取込用マイクロコ
ンピュータ（キーコン）、２４・・・装置動作制御用マ
イクロコンピュータ（メカコン）、２５・・・キックパ
ルス発生器。FIG. 1 is a diagram schematically showing the recording arrangement of reference signals for tracking control in a disc-shaped information recording medium previously proposed by the present applicant, and FIG. 2 is a block system diagram showing an embodiment of the apparatus of the present invention. 3 is a partially enlarged perspective view showing the reproduction state of the disc-shaped information recording medium shown in FIG. 1 and the reproduction device; FIGS. 4A and B; and FIG.
Figures A to C are signal waveform diagrams for explaining the operation of the second illustrated device, respectively. DESCRIPTION OF SYMBOLS 1... Disc-shaped information recording medium (disk), 3... Motor, 4... Playback needle, 11... Crystal oscillator, 12...
...A frequency divider, 13, 16... Programmable frequency divider, 14... Phase comparator, 15... Rotation detector, 18
, 19... Frequency divider, 20... Gate circuit for double-speed synchronization signal output, 23... Microcomputer for display and key input capture (key controller), 24... Microcomputer for device operation control (mechacontroller) ), 25...Kick pulse generator.
Claims (1)
任意の複数）、上記１回転期間当りＭ個以上発生するパ
ルス列である倍速同期信号を倍速比に応じて選択して生
成した強制移相パルスにより、円盤状情報記録媒体から
既記録信号をピックアップ再生するための再生素子を、
上記Ｍ個の分割時点のうち選択された一又は二以上の分
割時点で強制的に該記録媒体の半径方向上移送させてト
リツクプレイを行ない得る再生装置において、上記円盤
状情報記録媒体を定速回転させるためのモータサーボ回
路の基準信号を発生出力する発振器の出力信号を、上記
倍速同期信号を生成するための信号としても使用し、か
つ、該発振器の出力信号周波数を、本来再生すべき円盤
状情報記録媒体の既記録信号の水平走査周波数と、上記
分割数Ｍとの積の整数倍の周波数に選定したことを特徴
とする円盤状情報記録媒体再生装置。1 One rotation period of the disk-shaped information recording medium is divided into M (M is an arbitrary plural number), and a double-speed synchronization signal, which is a pulse train that is generated at least M times per one rotation period, is selected and generated according to the double speed ratio. A reproducing element for picking up and reproducing a previously recorded signal from a disc-shaped information recording medium using a phase-shifted pulse.
In a playback device capable of performing trick play by forcibly moving the recording medium upward in the radial direction at one or more division points selected from the M division points, the disc-shaped information recording medium is moved at a constant speed. The output signal of the oscillator that generates and outputs the reference signal of the motor servo circuit for rotation is also used as the signal for generating the double-speed synchronization signal, and the output signal frequency of the oscillator is used to generate the disc that is originally to be reproduced. A disc-shaped information recording medium reproducing device characterized in that the frequency is selected to be an integral multiple of the product of the horizontal scanning frequency of the recorded signal of the disc-shaped information recording medium and the division number M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55113759A JPS6053994B2 (en) | 1980-08-19 | 1980-08-19 | Disc-shaped information recording medium reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55113759A JPS6053994B2 (en) | 1980-08-19 | 1980-08-19 | Disc-shaped information recording medium reproducing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5738074A JPS5738074A (en) | 1982-03-02 |
| JPS6053994B2 true JPS6053994B2 (en) | 1985-11-28 |
Family
ID=14620414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55113759A Expired JPS6053994B2 (en) | 1980-08-19 | 1980-08-19 | Disc-shaped information recording medium reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6053994B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180125598A (en) | 2016-07-04 | 2018-11-23 | 닛폰 스틸 앤드 스미킨 스테인레스 스틸 코포레이션 | Ferritic stainless steel, its steel sheet and manufacturing method thereof |
| WO2019189174A1 (en) | 2018-03-27 | 2019-10-03 | 日鉄ステンレス株式会社 | Ferritic stainless steel and method for manufacturing same, ferritic stainless steel plate and method for manufacturing same, and fuel cell member |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2748360B2 (en) * | 1987-02-17 | 1998-05-06 | ソニー株式会社 | Vehicle information transmission device |
-
1980
- 1980-08-19 JP JP55113759A patent/JPS6053994B2/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180125598A (en) | 2016-07-04 | 2018-11-23 | 닛폰 스틸 앤드 스미킨 스테인레스 스틸 코포레이션 | Ferritic stainless steel, its steel sheet and manufacturing method thereof |
| KR20200015820A (en) | 2016-07-04 | 2020-02-12 | 닛테츠 스테인레스 가부시키가이샤 | Ferritic stainless steel, steel sheet thereof, and methods for producing these |
| WO2019189174A1 (en) | 2018-03-27 | 2019-10-03 | 日鉄ステンレス株式会社 | Ferritic stainless steel and method for manufacturing same, ferritic stainless steel plate and method for manufacturing same, and fuel cell member |
| KR20200127022A (en) | 2018-03-27 | 2020-11-09 | 닛테츠 스테인레스 가부시키가이샤 | Ferritic stainless steel and its manufacturing method, ferritic stainless steel sheet and its manufacturing method, and member for fuel cells |
| EP4036255A1 (en) | 2018-03-27 | 2022-08-03 | NIPPON STEEL Stainless Steel Corporation | Ferritic stainless steel and method for manufacturing same, ferritic stainless steel sheet and method for manufacturing same, and fuel cell member |
| US11667986B2 (en) | 2018-03-27 | 2023-06-06 | Nippon Steel Stainless Steel Corporation | Ferritic stainless steel and method for manufacturing same, ferritic stainless steel sheet and method for manufacturing same, and fuel cell member |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5738074A (en) | 1982-03-02 |
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