JPS63114428U - - Google Patents
Info
- Publication number
- JPS63114428U JPS63114428U JP6275386U JP6275386U JPS63114428U JP S63114428 U JPS63114428 U JP S63114428U JP 6275386 U JP6275386 U JP 6275386U JP 6275386 U JP6275386 U JP 6275386U JP S63114428 U JPS63114428 U JP S63114428U
- Authority
- JP
- Japan
- Prior art keywords
- speed
- signal
- reading
- pulse train
- command
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 7
Landscapes
- Digital Magnetic Recording (AREA)
Description
第１図は本考案をＲ―ＤＡＴ装置に適用した場
合の早送り速度制御装置の一実施例を示すブロツ
ク図、第２図は第１図の各部波形図、第３図は読
取中識別部の構成説明図、第４図は実速度パルス
発生原理を示す波形図、第５図は本考案による第
２の実施例ブロツク図、第６図は第５図の各部波
形図、第７図及び第８はＲ―ＤＡＴ装置の概略説
明図である。
１１……読取中識別部、１２……エンベロープ
デイテクタ、１３……実速度パルス発生回路、１
４……指令速度パルス発生回路、１５……テープ
送り速度制御部、１５ａ……選択回路、１５ｂ…
…デジタル速度制御部、１６……モータ駆動回路
、１７……リールモータ。
Fig. 1 is a block diagram showing an embodiment of a rapid traverse speed control device when the present invention is applied to an R-DAT device, Fig. 2 is a waveform diagram of each part of Fig. 1, and Fig. 3 is a diagram of the identification section during reading. 4 is a waveform diagram showing the principle of actual speed pulse generation, FIG. 5 is a block diagram of the second embodiment of the present invention, FIG. 6 is a waveform diagram of each part of FIG. 5, and FIGS. 8 is a schematic explanatory diagram of the R-DAT device. 11...Reading identification unit, 12...Envelope detector, 13...Actual speed pulse generation circuit, 1
4... Command speed pulse generation circuit, 15... Tape feed speed control section, 15a... Selection circuit, 15b...
...Digital speed control unit, 16...Motor drive circuit, 17...Reel motor.
補正 昭６２．１０．５
図面の簡単な説明を次のように補正する。
本願明細書第１５頁第１８行目の「第７図及び
第８は」を「第７図及び第８図は」と訂正する。Amendment October 5, 1982 The brief description of the drawing is amended as follows. "Fig. 7 and 8" on page 15, line 18 of the specification of the present application is corrected to "Fig. 7 and 8".
Claims (1)
ヘツドをテープ長手方向に対して傾斜させながら
回転させて該磁気テープに信号を記録しあるいは
磁気テープから信号を読み取つて再生する音響機
器の早送り速度制御装置において、 ヘツドが磁気テープから信号を読み取つている
期間と読み取つていない期間を識別する読取中識
別部と、 ヘツド再生信号のエンベロープを有するエンベ
ロープ波形信号を発生するエンベロープデイテク
タと、 エンベロープ波形信号を所定レベルでスライス
して実速度に応じたパルス列を発生する実速度パ
ルス発生回路と、 指令速度に応じたパルス列を発生する指令速度
パルス発生回路と、 ヘツドが磁気テープから信号を読み取つている
間は前記実速度パルス列を用いて速度誤差信号を
発生し、ヘツドが磁気テープから信号を読み取つ
ていない場合には指令速度パルス列を用いて速度
誤差信号を発生するテープ送り速度制御部とを有
する ことを特徴とする早送り速度制御装置。 (2) 前記早送り速度制御装置は、 読取中識別部からの信号に基づいて実速度パル
ス列と指令パルス列の一方のパルス列を選択出力
する選択回路と、 指令速度データと前記入力されたパルス列を用
いて指令速度と実速度間の速度差に応じたパルス
幅を有する速度誤差信号を発生するデジタル速度
制御部を有する ことを特徴とする実用新案登録請求の範囲第(1)
項記載の早送り速度制御装置。 (3) 前記早送り速度制御装置は、 指令速度データと実速度パルス発生回路から出
力される実速度に応じたパルス列を用いて実速度
と指令速度間のの速度差に応じてパルス幅変調さ
れた速度誤差信号を発生するデジタル速度制御部
と、 読取中識別部からの信号に基づいてパルス幅変
調回路から出力される速度誤差信号と指令速度パ
ルス発生回路から出力されるデユーテイ５０％の
パルス列の一方を選択出力する選択回路とを有す
る ことを特徴とする実用新案登録請求の範囲第(1)
項記載の早送り速度制御装置。[Claims for Utility Model Registration] (1) Recording signals on the magnetic tape or reading signals from the magnetic tape by feeding the magnetic tape in the longitudinal direction of the tape and rotating the head at an angle with respect to the longitudinal direction of the tape. A fast-forwarding speed control device for a reproduction audio device includes a reading identification unit that identifies a period when a head is reading a signal from a magnetic tape and a period when it is not reading a signal, and an envelope waveform signal having an envelope of a head reproduction signal. An envelope detector, an actual speed pulse generation circuit that slices the envelope waveform signal at a predetermined level and generates a pulse train according to the actual speed, a command speed pulse generation circuit that generates a pulse train according to the command speed, and a magnetic head. A tape that generates a speed error signal using the actual speed pulse train while the head is reading a signal from the tape, and generates a speed error signal using the command speed pulse train when the head is not reading a signal from the magnetic tape. 1. A rapid feed speed control device comprising a feed speed control section. (2) The fast-forward speed control device includes: a selection circuit that selects and outputs one of the actual speed pulse train and the command pulse train based on the signal from the reading identification unit; Utility model registration claim No. (1) characterized by having a digital speed control section that generates a speed error signal having a pulse width according to the speed difference between the commanded speed and the actual speed.
Rapid traverse speed control device as described in . (3) The rapid traverse speed control device performs pulse width modulation according to the speed difference between the actual speed and the command speed using the command speed data and a pulse train corresponding to the actual speed output from the actual speed pulse generation circuit. A digital speed control section that generates a speed error signal, and one of the speed error signal output from the pulse width modulation circuit based on the signal from the reading identification section and the pulse train with a duty of 50% output from the command speed pulse generation circuit. Utility model registration claim No. (1) characterized by having a selection circuit that selectively outputs the
Rapid traverse speed control device as described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6275386U JPH0544905Y2 (en) | 1986-04-25 | 1986-04-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6275386U JPH0544905Y2 (en) | 1986-04-25 | 1986-04-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63114428U true JPS63114428U (en) | 1988-07-23 |
| JPH0544905Y2 JPH0544905Y2 (en) | 1993-11-16 |
Family
ID=30897330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6275386U Expired - Lifetime JPH0544905Y2 (en) | 1986-04-25 | 1986-04-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0544905Y2 (en) |
-
1986
- 1986-04-25 JP JP6275386U patent/JPH0544905Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0544905Y2 (en) | 1993-11-16 |
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