JPS57152565A - Speed detecting device for magnetic tape - Google Patents
Speed detecting device for magnetic tapeInfo
- Publication number
- JPS57152565A JPS57152565A JP56036606A JP3660681A JPS57152565A JP S57152565 A JPS57152565 A JP S57152565A JP 56036606 A JP56036606 A JP 56036606A JP 3660681 A JP3660681 A JP 3660681A JP S57152565 A JPS57152565 A JP S57152565A
- Authority
- JP
- Japan
- Prior art keywords
- output
- magnetic tape
- speed detecting
- recording
- reproducing
- 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
Links
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
- G11B15/46—Controlling, regulating, or indicating speed
- G11B15/52—Controlling, regulating, or indicating speed by using signals recorded on, or derived from, record carrier
Abstract
PURPOSE:To reduce level variation in a titled device which detects tape speeds by recording and reproducing pulses on a magnetic tape, by adding a voltage having a varied amount which is reverse to the level variation of the reproduced signal, to the reproduced signal. CONSTITUTION:Pulses are recorded on a magnetic tape by means of a recording circuit 1 and recording head 2. An output obtained by intergrating the output of the recording circuit 1 at an integral network 6 is added to the output of a reproducing head 3 at an adder 7, and the output of the adder 7 is inputted to a reproducing circuit 4. The output of the reproducing circuit 4 is fetched from an output terminal 5 as a speed detecting signal and, at the same time, the speed detecting signal is immediately inputted to the recording circuit 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56036606A JPS57152565A (en) | 1981-03-16 | 1981-03-16 | Speed detecting device for magnetic tape |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56036606A JPS57152565A (en) | 1981-03-16 | 1981-03-16 | Speed detecting device for magnetic tape |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57152565A true JPS57152565A (en) | 1982-09-20 |
Family
ID=12474451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56036606A Pending JPS57152565A (en) | 1981-03-16 | 1981-03-16 | Speed detecting device for magnetic tape |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57152565A (en) |
-
1981
- 1981-03-16 JP JP56036606A patent/JPS57152565A/en active Pending
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