JPS5945786A - Slow motion reproducing system - Google Patents

Slow motion reproducing system

Info

Publication number
JPS5945786A
JPS5945786A JP57157882A JP15788282A JPS5945786A JP S5945786 A JPS5945786 A JP S5945786A JP 57157882 A JP57157882 A JP 57157882A JP 15788282 A JP15788282 A JP 15788282A JP S5945786 A JPS5945786 A JP S5945786A
Authority
JP
Japan
Prior art keywords
pulse
output
control
control signal
tape
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
Application number
JP57157882A
Other languages
Japanese (ja)
Inventor
Morihiro Kubo
久保 盛弘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP57157882A priority Critical patent/JPS5945786A/en
Publication of JPS5945786A publication Critical patent/JPS5945786A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/1808Driving of both record carrier and head
    • G11B15/1875Driving of both record carrier and head adaptations for special effects or editing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To prevent a stop period from being shorter even with small slow ratio, by taking the tape running period as >=3 fields, in the slow motion reproduction by driving a VTR intermittently. CONSTITUTION:A control signal reproduced by tape running is counted at a count decoder 8, and outputs an output F risen at the 1st control signal and falling down at the 2nd control signal. The signal is gated at the 2nd control signal G and applied to a tracking monostable multivibrator 5 and a control pulse I is formed with a damping pulse monostable multivibrator 6. The leading of the control pulse resets an FF7. On the other hand, an FG pulse generated from a pulse generator connected to a capstan motor 4 is reduced to a speed control output at a speed control circuit 10. The speed control output is applied to a switch 11 controlled by an FF output J being at high during two-frame period, and the output L is mixed with a start pulse D. The mixed output L is applied to transistors T1, T4 then the tape runs for the two-frame period, and stops for the two-frame period with the control pulse I.

Description

【発明の詳細な説明】 本発明はV E’ Hにおけるスロ・−モーi/gン再
生方式に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a slow-motion I/G regeneration system in V E'H.

V T 13 1::t+H’ −( スLy − モ
− i/ g 7再’lE Y実現T2)のにキャブス
クンモータン間欠駆動する方法がある。
There is a method of intermittent driving of the cab scan motor in V T 13 1::t+H'-(Sly-mo-i/g7re'IEY Realization T2).

すなわち、ほぼ通′帛再生時と同一速度で1フレームだ
けテープを送り,その後,(n−1)フレーム間テープ
送りを停止し、再び1フレーム送ることにより+77H
スa−モーi/ーxン?実現するものである。そし〔、
1フレームテーブ?送る際.通常再生時とほぼ同一のト
ラッキングどなるよう1二テープ移動開始時とヘッドの
回転位置との同期ンとればほぼノイズレススローモーン
ロンな実現できる.<t′IzスローモーVヨン時のヘ
ッド軌跡2弟1図《イ1《口】(ハ)(ニ)に示す。
In other words, by feeding the tape for one frame at almost the same speed as during normal playback, then stopping tape feeding for (n-1) frames, and feeding one frame again, +77H
Su a-mo i/-xn? It is something that will be realized. stop〔,
1 frame table? When sending. Tracking is almost the same as during normal playback.12 If you synchronize the start of tape movement with the rotational position of the head, you can achieve almost noiseless, slow motion. <t'IzHead trajectory during slow motion V-yong is shown in Figure 2 (A) (C) and (D).

すなわち、第1因(イ1の如く,褒ずスチルの代態で3
フレ一ム分,走亙゛rる,このとき、ノイズバンドは垂
直プランキング内に引込fれる様、トラックAIとトラ
ックB1に均等r:衰たがるように。
In other words, the first cause (as in A1, 3 in the form of a reward still)
It runs for one frame, and at this time, the noise band is drawn into vertical planking and is equally distributed on track AI and track B1 so that it attenuates.

する。次に第1肉《qレリに示す如く通常再生時と同一
速度でテープを送り1フレ一ム分,す7よわらトラック
B1及びトラックA2Y走・任したイ々,・′81図1
ーJl=示4ーon<トラックA2及びトラックB2に
均等に東たがる状態でスチルを5フレ一ム分行ない,こ
れらの動作を繰返し゜C’Aスローモーシヨン再生再生
心得、次にZスローモーヅヨンを・実現する回路を及び
そのクイムチャートを第2図及び;■3因に示すウ ヘッドの回転に同期した30HzのFIFパルス(イ)
が領ず〃分周器目)で分周されlot、 RF遅延モノ
マルチ12(で遅延されるレリ8釘に、この遅延パルス
は起動パIレヌモノマルチ(31で起動パルスに)とさ
れ°〔、トランジスタ(1°1(T4)’¥イオン態と
し、キャプスタンモータ(4)に正の′屯流を流す、そ
し°C,キャプスタンが駆動され”〔、テープが走行す
ると、コントロール信号(ホ)が[Tr生される。
do. Next, move the tape at the same speed as during normal playback as shown in the 1st page.
-Jl=Indication 4-on Figure 2 shows the circuit that realizes yon and its Quim chart;
This delayed pulse is divided by the frequency divider (number of frequency dividers) and delayed by the RF delay monomulti 12 (to the starting pulse at 31). The transistor (1°1 (T4)') is placed in the ionic state, and a positive current is sent to the capstan motor (4). Then, when the capstan is driven and the tape runs, the control signal (home ) is generated as [Tr.

れ°c II lj+パルス(1;とされる、iii己
トラッキングモノマルチの時定数はテープ停止ヒ時(ニ
ノイズが垂直ブランキング内に引込1うれる様に役定さ
れる。、前記制動パルス「ト1はトランジスタ(T2)
(’I°5)火オンとするためキャプスタンモータ(4
1にr才逆電11(が印加されることになり、今でで正
転していたモータが急激に停止するよ そして、3フレ一ム間、7−−ブが停止ヒ【7.再度起
動パルスにより上述の動作を繰り返す。
The time constant of the tracking monomultiply is assumed to be + pulse (1), and the time constant of the tracking monomultiple is used so that when the tape is stopped, the noise is drawn into the vertical blanking. T1 is a transistor (T2)
('I°5) Capstan motor (4) to turn on the fire.
A reverse voltage 11 (reverse current 11) will be applied to 1, and the motor, which was currently rotating forward, will suddenly stop.Then, for 3 frames, 7-- will be stopped again. The above operation is repeated by the activation pulse.

ところで、に1本の従来方法では、テープ走行期間?1
フレームとし、スロー比ン変える場合は停止期間娶変え
ることにより行うのが−・般的であった。
By the way, in the conventional method, what is the tape running period? 1
When changing the slow ratio, it was common to change the stop period.

この方法であれば例えば2スロー等のスロー比の比較的
小さい場合、テープ停止期間が非富に短かくなる。そし
て、キャプスタンモータの停止には、制動を加え°Cか
らある程度の時間を要するため、停止期間内にテープが
完全C:停仕ルされずに次の走行に移ってしまい安定な
スローモーシせン再生を実現するのが困雉てあった。
With this method, when the slow ratio is relatively small, such as 2 throws, the tape stop period can be extremely short. In order to stop the capstan motor, it takes a certain amount of time to apply braking and reduce the temperature to °C, so the tape reaches completely C within the stop period, and the motor moves on to the next run without stopping, resulting in stable slow motion. It was difficult to realize the restoration.

本発明は上述の欠点を解消”rべく為さり、たものであ
り1間欠駆動によるスローモーvWン再生において、テ
ープ走行期間t3フィールド以りとし。
The present invention has been made to eliminate the above-mentioned drawbacks, and in slow-mo VW playback by one intermittent drive, the tape running period is longer than t3 field.

スロー比の小さい場合でも停止期間が短かくならないス
ローモーション再生方式vtlJiI案するものである
This is a slow motion playback method vtlJiI that does not shorten the stop period even when the slow ratio is small.

以下1図面(=従い本発明の一実施例を説明する¥J4
 図G;L本発明のスローモーvロン方式の再生出力模
式囚を示し、i′−ブを5フレ一ム期間停止させた後、
2フレ一ム期間通常走行時と略同−速度で1行さ4t、
その後%更に3フレ一ム期間停止させc、215ス【1
−モーiyy ンM’f:、’r’Z”yAし’Cいる
The following is one drawing (=Therefore, it explains one embodiment of the present invention¥J4
Figure G;L shows the reproduction output model of the slow-mo Vron method of the present invention, and after stopping the i'-b for 5 frame periods,
One line for 2 frames at approximately the same speed as during normal driving, 4t.
Then stop for 3 more frames, 215 steps [1
-Moiyy M'f:,'r'Z"yA and'C.

仄ロ一本実Mli 1列鳳二おけるスローモー・i/オ
ン内生回路りブ[JツクtM fiンびタイムチャート
を一第5m及び第6NIユホす。
Slow-mo i/on internal circuit rib in 1st row 2nd row [JtsukutM fin and time chart are shown in 1st 5m and 6th NI Yuho.

まず、起動パルスに)により停止状態にあったテープが
走行されると共にフリップフロップ(71がセットされ
る。テープ走行によりコントロール信号体1か再生され
、このコンI・ロール信号はカウントデコーダ(8)で
カウントされ、1イ固目のコントロール信号で立上り2
個目のコントロール信号でfFるカウント出力N’4出
力゛する。この出力と前記占lr:、コントロール信号
はアンドゲート(91に人力され21内りのコントロー
ル信号(ト1のみゲートされる。
First, the stopped tape is run by the start pulse () and the flip-flop (71) is set.As the tape runs, the control signal 1 is reproduced, and this control/roll signal is sent to the count decoder (8). It is counted at 1, and it rises at the 1st control signal and starts at 2.
A count output N'4 of fF is outputted by the second control signal. This output and the control signal are input to an AND gate (91) and the control signal within 21 (only G1 is gated).

モし−〔このコントロール信号はトラッキングモノ°フ
ル°P151+二供給された後(月、制動パルス千ノマ
ルチ(61で制御パルス(す!が作成される。ぞし゛〔
、この制動パルスの立りりは、前記フリップフロップ(
7)をリセフトする。
After this control signal is supplied with a tracking mono-full degree P151+2, a control pulse (su! is created at 61) and a braking pulse.
, the rise of this braking pulse is determined by the flip-flop (
7) Reset.

一方、キャプスタンモータ(41に連結されたパルス発
生器より発生するFCパルスは、速度制御回路00で速
度制御出力が作成される。尚、この速度制御回路は通常
走行時の従来方法と同様であるので説明は雀略する。、
速度制御出力は2フレ一ム期間ハイとなる前記フリップ
フロップ出力【ヌ1により制御されるスイッチ1111
に供給されこの出力(/E/lは前記起動パルスに)と
混合される。この混合出力(明は第1及び第4トランジ
スタ(TI ) (T4 )G二供給される。よつ“C
,2フレ一ム期間デーブ車行した後、制動パルス1カに
より2フレ一ム明間停止する。
On the other hand, the FC pulse generated by the pulse generator connected to the capstan motor (41) is used to create a speed control output in the speed control circuit 00.This speed control circuit is the same as the conventional method during normal running. Since there is, I will omit the explanation.
The speed control output is the switch 1111 controlled by the flip-flop output [1111] which is high for two frame periods.
and mixed with this output (/E/l is the activation pulse). This mixed output (bright is supplied to the first and fourth transistors (TI) (T4) G2 and "C"
, after driving for two frames, one braking pulse causes the motor to stop for two frames.

尚、l述の実施例では2ヘツドVTIIについ°C述べ
たが、対向するヘッドのアジマスが同一なサブヘッドを
備えた4ヘツドV T’ Hにも適用できることは言う
までもない。
In the above embodiment, the two-head VTII was described, but it goes without saying that the present invention can also be applied to a four-head VT'H having sub-heads with the same azimuth of opposing heads.

上述の如く本発明のスローモーンロン再生方式はテープ
走行期間v2フレーム以、Lとすると共にテープ走行時
、速度制御をかけることにより、スロー比の小さい場合
でも、テープ停止期間が割合長くなりテープが完全に停
止した後に、次のテープ走行に移ることができるため、
ノイズのない安定ylスローモモー1ン再生乞実現でき
る。
As mentioned above, in the slow-moon-long playback method of the present invention, by setting the tape running period to L after v2 frames and controlling the speed when running the tape, even when the slow ratio is small, the tape stop period is relatively long and the tape is not completely finished. After stopping, you can move on to the next tape run.
Stable slow motion mode playback without noise can be achieved.

【図面の簡単な説明】[Brief explanation of the drawing]

51tyqtイ)同(/1(に)は従来のスロー・モ・
−ンヨン再生時のヘッド軌跡の模式図、第2N及び第3
図は従来のスローモーション再生方式のブロック図及び
タイムチャー)、 ff14図は本発明の一実施例にお
けるスローモーション再生方式の再生出力を表わす模式
図、第51:’I及び第6因は木実用例回路のブロック
図及びタイムチャートである。 主な図番の説明 (31・・・起動バヤスモノマルチ、  (’7)・・
・ソリツブプロップ、16)・・・制動パルス七ノマル
チ、(l〔・・・速IW制御回路、’1111・・・ス
イッチ% (4)・・・キャブスタ−1ζ=口/−X1
菅モ:1.、A −ノ      +7      −ノ       
−ノ       −ノ       Nノ     
  −ノつさ ′SQ  、  −’I    妊  Z−ノ    
    へノ       −ノ        −ノ
       νシ    +     −h<−Jr
l−523−
51tyqt A) Same (/1 (Ni) is the conventional slow-mo
- Schematic diagram of the head trajectory during playback, No. 2N and No. 3
The figure is a block diagram and time chart of a conventional slow-motion playback method), ff14 is a schematic diagram showing the playback output of a slow-motion playback method in an embodiment of the present invention, No. 51: 'I and the sixth factor are wood practical. 2 is a block diagram and a time chart of an example circuit. Explanation of main drawing numbers (31... Start Bayasu Mono Multi, ('7)...
・Solitub prop, 16)...braking pulse seven-number multi, (l[...speed IW control circuit, '1111...switch % (4)...cabstar-1ζ=mouth/-X1
Sugamo: 1. , A -ノ +7 -ノ
-ノ -ノ Nノ
-notssa'SQ, -'I pregnancy Z-no
Heno -no -no νshi + -h<-Jr
l-523-

Claims (1)

【特許請求の範囲】 111  所定期間テープを停止せしめた後、所定期間
キャプスクンケ駆動し゛〔前記テープを走行せしめ′〔
スローモーF)7.ン再生を為すスローモーシロン再生
方式におい°C1前記テープ停止期間を2フLノ−ム1
ゾ上及び前記チー・ブ走行期間乞3フィール1°以上と
するとJ’: I:Z fil記キャプスタンに速度制
御χかけ5こと¥特徴とするス1ブーモーv=1:/l
IT生方弐〇
[Claims] 111 After stopping the tape for a predetermined period of time, the capscunk is driven for a predetermined period of time.
Slow-mo F)7. In the slow-motion playback method that performs playback, the tape stop period is set to 2 frames L norm 1.
If the above and the running period is 3 degrees or more, then the speed control χ is applied to the capstan by 5 times.
IT Ikuta 2〇
JP57157882A 1982-09-09 1982-09-09 Slow motion reproducing system Pending JPS5945786A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57157882A JPS5945786A (en) 1982-09-09 1982-09-09 Slow motion reproducing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57157882A JPS5945786A (en) 1982-09-09 1982-09-09 Slow motion reproducing system

Publications (1)

Publication Number Publication Date
JPS5945786A true JPS5945786A (en) 1984-03-14

Family

ID=15659471

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57157882A Pending JPS5945786A (en) 1982-09-09 1982-09-09 Slow motion reproducing system

Country Status (1)

Country Link
JP (1) JPS5945786A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS544332A (en) * 1977-06-13 1979-01-13 Matsushita Electric Ind Co Ltd Alkaline cell
JPS54104229A (en) * 1978-02-03 1979-08-16 Victor Co Of Japan Ltd Magnetic reproducer
JPS572178A (en) * 1980-06-04 1982-01-07 Victor Co Of Japan Ltd Frame feed perroducing device for recording and reproducing device
JPS5780879A (en) * 1980-11-07 1982-05-20 Hitachi Ltd Magnetic recording and reproducing device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS544332A (en) * 1977-06-13 1979-01-13 Matsushita Electric Ind Co Ltd Alkaline cell
JPS54104229A (en) * 1978-02-03 1979-08-16 Victor Co Of Japan Ltd Magnetic reproducer
JPS572178A (en) * 1980-06-04 1982-01-07 Victor Co Of Japan Ltd Frame feed perroducing device for recording and reproducing device
JPS5780879A (en) * 1980-11-07 1982-05-20 Hitachi Ltd Magnetic recording and reproducing device

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