JPS5797282A - Magnetic recording and reproducing device - Google Patents

Magnetic recording and reproducing device

Info

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
Application number
JP55174021A
Other languages
Japanese (ja)
Other versions
JPS645792B2 (en
Inventor
Masaaki Kobayashi
Mineo Mino
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP55174021A priority Critical patent/JPS5797282A/en
Publication of JPS5797282A publication Critical patent/JPS5797282A/en
Publication of JPS645792B2 publication Critical patent/JPS645792B2/ja
Granted legal-status Critical Current

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.
JP55174021A 1980-12-09 1980-12-09 Magnetic recording and reproducing device Granted JPS5797282A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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