JPH0150015B2 - - Google Patents
Info
- Publication number
- JPH0150015B2 JPH0150015B2 JP56054674A JP5467481A JPH0150015B2 JP H0150015 B2 JPH0150015 B2 JP H0150015B2 JP 56054674 A JP56054674 A JP 56054674A JP 5467481 A JP5467481 A JP 5467481A JP H0150015 B2 JPH0150015 B2 JP H0150015B2
- Authority
- JP
- Japan
- Prior art keywords
- dial
- tape
- supplied
- counter
- rotation
- 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
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, 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
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
- G11B15/44—Speed-changing arrangements; Reversing arrangements; Drive transfer means therefor
- G11B15/442—Control thereof
Description
【発明の詳細な説明】 本発明はVTRのジヨグ装置に関する。[Detailed description of the invention] The present invention relates to a jogging device for a VTR.
いわゆる編集機能を有するVTRにおいては、
必要な編集点等を探すためにジヨグ装置と呼ばれ
る可変速再生装置が設けられている。 In VTRs that have so-called editing functions,
A variable speed playback device called a jog device is provided to search for necessary editing points and the like.
すなわち操作パネル上にジヨグダイヤルと呼ば
れるつまみが設けられ、このダイヤルを回転させ
ることにより、これに対応してテープが正負方向
に移送される。そしてこの場合にダイヤルを早く
回転させるとテープが早く移送され、ダイヤルの
回転を遅くするとテープの移送も遅くなるように
されている。 That is, a knob called a jog dial is provided on the operation panel, and by rotating this dial, the tape is transported in the positive and negative directions. In this case, if the dial is rotated quickly, the tape is transferred quickly, and if the dial is rotated slowly, the tape is transferred slowly.
ところが従来の装置では、ダイヤルの回転とテ
ープの移送とは１対１に対応しており、編集点を
決めるような微妙な操作においては操作に慎重を
要すると共に、多量のテープを移送する場合には
ダイヤルも回数多く回さなければならず、操作性
が極めて悪かつた。 However, in conventional devices, there is a one-to-one correspondence between the rotation of the dial and the transport of the tape, which requires careful operation when performing delicate operations such as determining editing points, and when transporting a large amount of tape. The dial had to be turned many times, and the operability was extremely poor.
本発明はこのような点にかんがみ、簡単な構成
で操作性を良くしたジヨグ装置を提供するもので
ある。すなわち本発明においては、ジヨグダイヤ
ルの回転数を検出し、この回転数を非直線的にデ
コードし、このデコード信号にてキヤプスタンモ
ータの回転を制御するようにしたものである。以
下図面を参照しながら本発明の一実施例について
説明しよう。 In view of these points, the present invention provides a jogging device with a simple configuration and improved operability. That is, in the present invention, the number of rotations of the jog dial is detected, this number of rotations is decoded non-linearly, and the rotation of the capstan motor is controlled using this decoded signal. An embodiment of the present invention will be described below with reference to the drawings.
第１図において、ジヨグダイヤル１に関連して
周波数発電機２が設けられ、この周波数発電機２
からの信号がカウンタ３に供給される。このカウ
ンタ３の計数値がラツチ回路４に供給される。ま
た例えば60Hzのクロツク発振器５が設けられ、こ
のクロツク信号がカウンタ３及びラツチ回路４に
供給され、カウンタ３がリセツトされると共に、
リセツトの直前の計数値がラツチ回路４にラツチ
される。 In FIG. 1, a frequency generator 2 is provided in association with a jog dial 1, and this frequency generator 2
A signal from the counter 3 is supplied to the counter 3. The counted value of this counter 3 is supplied to a latch circuit 4. For example, a 60Hz clock oscillator 5 is provided, and this clock signal is supplied to the counter 3 and the latch circuit 4, and the counter 3 is reset.
The count value immediately before the reset is latched in the latch circuit 4.
このラツチ回路４からの信号がリードオンリー
メモリ（ROM）６に供給される。このリードオ
ンリーメモリ６において、入力値をアドレスとし
て所望の出力値が読み出される。ここで入出力特
性は例えば第２図に示すような二乗関数とされ
る。 A signal from this latch circuit 4 is supplied to a read only memory (ROM) 6. In this read-only memory 6, a desired output value is read out using the input value as an address. Here, the input/output characteristics are, for example, a square function as shown in FIG.
このリードオンリーメモリ６からの信号がDA
変換回路７に供給され、形成されたアナログ電圧
が駆動アンプ８を通じてキヤプスタンモータ９に
供給される。 The signal from this read-only memory 6 is DA
The analog voltage generated by being supplied to the conversion circuit 7 is supplied to the capstan motor 9 through the drive amplifier 8.
またダイヤル１に関連してパルス発生器１０が
設けられ、このパルス発生器１０からの信号が回
転方向判別回路１１に供給されてダイヤル１の回
転方向が検出される。この検出信号がDA変換回
路７に供給されて、ダイヤル１が負方向に回転さ
れているときは、DA変換回路７の出力の極性が
反転される。 Further, a pulse generator 10 is provided in association with the dial 1, and a signal from the pulse generator 10 is supplied to a rotational direction determination circuit 11 to detect the rotational direction of the dial 1. This detection signal is supplied to the DA conversion circuit 7, and when the dial 1 is rotated in the negative direction, the polarity of the output of the DA conversion circuit 7 is inverted.
こうしてジヨグダイヤルの回転に対応してキヤ
プスタンモータが回転され、テープが移送される
わけであるが、本発明によればダイヤルの回転と
キヤプスタンモータの回転（テープの移送）とが
二乗関数で対応するようにしたので、ダイヤルの
回転が遅いときはテープの移送が極めて遅くな
り、ダイヤルの回転を早くすると急速にテープが
移送されるようになる。 In this way, the capstan motor is rotated in response to the rotation of the jog dial, and the tape is transferred. According to the present invention, the rotation of the dial and the rotation of the capstan motor (transfer of the tape) are a square function. Therefore, when the dial is rotated slowly, the tape will be transferred very slowly, and when the dial is rotated quickly, the tape will be transferred rapidly.
従つて編集点を決めるような場合にはダイヤル
を遅目に回すことにより、所望点を容易かつ正確
に設定できると共に、多量のテープを移送する場
合にはダイヤルを早目に回すことにより、テープ
を急速に移送することができる。 Therefore, when determining an editing point, by turning the dial slowly, you can easily and accurately set the desired point, and when transferring a large amount of tape, by turning the dial quickly, you can easily and accurately set the desired point. can be rapidly transferred.
なお上述の例において、リードオンリーメモリ
６の代りに二乗の演算回路を設けてもよく、また
二乗以外の入出力特性を有する回路を設けてもよ
い。 In the above example, a square arithmetic circuit may be provided in place of the read-only memory 6, or a circuit having input/output characteristics other than square may be provided.
またダイヤル１の回転方向の検出及び出力電圧
の極性反転の方法は別の方法によつてもよい。 Further, the method of detecting the rotational direction of the dial 1 and reversing the polarity of the output voltage may be performed using other methods.
第１図は本発明の一例の構成図、第２図はその
説明のための図である。
１はジヨグダイヤル、３はカウンタ、４はラツ
チ回路、５はクロツク発振器、６はリードオンリ
ーメモリ、７はDA変換回路、９はキヤプスタン
モータである。
FIG. 1 is a configuration diagram of an example of the present invention, and FIG. 2 is a diagram for explaining the same. 1 is a jog dial, 3 is a counter, 4 is a latch circuit, 5 is a clock oscillator, 6 is a read-only memory, 7 is a DA conversion circuit, and 9 is a capstan motor.
Claims (1)
数を非直線的にデコードし、このデコード信号に
てキヤプスタンモータの回転を制御するようにし
たVTRのジヨグ装置。1. A VTR jogging device that detects the rotational speed of a jogging dial, decodes this rotational speed non-linearly, and controls the rotation of a capstan motor using this decoded signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56054674A JPS57169955A (en) | 1981-04-10 | 1981-04-10 | Jogging device for vtr |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56054674A JPS57169955A (en) | 1981-04-10 | 1981-04-10 | Jogging device for vtr |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57169955A JPS57169955A (en) | 1982-10-19 |
| JPH0150015B2 true JPH0150015B2 (en) | 1989-10-26 |
Family
ID=12977325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56054674A Granted JPS57169955A (en) | 1981-04-10 | 1981-04-10 | Jogging device for vtr |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57169955A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61160859A (en) * | 1985-01-07 | 1986-07-21 | Sony Corp | Video tape recorder |
| JPS61227078A (en) * | 1985-03-30 | 1986-10-09 | Tokyo Juki Ind Co Ltd | Operating mechanism for rotating platen in printer |
| JP2810437B2 (en) * | 1989-09-08 | 1998-10-15 | キヤノン株式会社 | Speed control device |
| JP2831278B2 (en) * | 1994-08-08 | 1998-12-02 | 東芝イーエムアイ株式会社 | Signal recording / playback method |
-
1981
- 1981-04-10 JP JP56054674A patent/JPS57169955A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57169955A (en) | 1982-10-19 |
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