JPS5797282A - Magnetic recording and reproducing device - Google Patents
Magnetic recording and reproducing deviceInfo
- Publication number
- JPS5797282A JPS5797282A JP55174021A JP17402180A JPS5797282A JP S5797282 A JPS5797282 A JP S5797282A JP 55174021 A JP55174021 A JP 55174021A JP 17402180 A JP17402180 A JP 17402180A JP S5797282 A JPS5797282 A JP S5797282A
- Authority
- JP
- Japan
- Prior art keywords
- rotating
- speed reproduction
- angle
- main
- signal
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires
Landscapes
- Television Signal Processing For Recording (AREA)
Abstract
PURPOSE:To compensate the lowering in a reproducing output signal of a main rotating head produced at high speed reproduction or reversing high speed reproduction and to eliminate noise bars, by selecting the azimuth angle and rotating plane, in using an auxiliary rotating head. CONSTITUTION:In addition to main rotating heads M1, M2 having +6 deg., -6 deg. of azimuth angles, auxiliary rotating heads S1, S2 having -6 deg., +6 deg. of azimuth angles are fitted to a rotating disc 3 with being separated for an interval corresponding to two horizontal synchronizing signal periods of a video signal. A gear 15 with 256 teeth which is demagnetized and indicates the rotating angle of the disc 3 is fitted to a rotating shaft 4, and the angle is detected at a detecting head 16 and applied to a 5-bit counter 28 to output pulses inverted by 16- pulse count. A switch circuit is controlled with the output pulses, the output of the main and auxiliary rotating heads is switched, and a signal in which the reproducing output signal level is not lowered extremely at 9 times speed reproduction, is obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55174021A JPS5797282A (en) | 1980-12-09 | 1980-12-09 | Magnetic recording and reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55174021A JPS5797282A (en) | 1980-12-09 | 1980-12-09 | Magnetic recording and reproducing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5797282A true JPS5797282A (en) | 1982-06-16 |
JPS645792B2 JPS645792B2 (en) | 1989-01-31 |
Family
ID=15971248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55174021A Granted JPS5797282A (en) | 1980-12-09 | 1980-12-09 | Magnetic recording and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5797282A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5936487A (en) * | 1982-08-24 | 1984-02-28 | Matsushita Electric Ind Co Ltd | Magnetic reproducer |
JPS6069975A (en) * | 1983-09-26 | 1985-04-20 | Victor Co Of Japan Ltd | Reproducing signal switching circuit of rotary head at variable speed reproduction |
JPS6387087A (en) * | 1986-09-30 | 1988-04-18 | Nec Home Electronics Ltd | Magnetic recording and reproducing device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50153914U (en) * | 1974-06-06 | 1975-12-20 | ||
JPS5582574A (en) * | 1978-12-15 | 1980-06-21 | Sanyo Electric Co Ltd | Slow motion and still picture reproduction circuit |
-
1980
- 1980-12-09 JP JP55174021A patent/JPS5797282A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50153914U (en) * | 1974-06-06 | 1975-12-20 | ||
JPS5582574A (en) * | 1978-12-15 | 1980-06-21 | Sanyo Electric Co Ltd | Slow motion and still picture reproduction circuit |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5936487A (en) * | 1982-08-24 | 1984-02-28 | Matsushita Electric Ind Co Ltd | Magnetic reproducer |
JPH0363273B2 (en) * | 1982-08-24 | 1991-09-30 | Matsushita Electric Ind Co Ltd | |
JPS6069975A (en) * | 1983-09-26 | 1985-04-20 | Victor Co Of Japan Ltd | Reproducing signal switching circuit of rotary head at variable speed reproduction |
JPH0155798B2 (en) * | 1983-09-26 | 1989-11-27 | Victor Company Of Japan | |
JPS6387087A (en) * | 1986-09-30 | 1988-04-18 | Nec Home Electronics Ltd | Magnetic recording and reproducing device |
Also Published As
Publication number | Publication date |
---|---|
JPS645792B2 (en) | 1989-01-31 |
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