JPS57189328A - Recording equalizer switching circuit - Google Patents

Recording equalizer switching circuit

Info

Publication number
JPS57189328A
JPS57189328A JP56073555A JP7355581A JPS57189328A JP S57189328 A JPS57189328 A JP S57189328A JP 56073555 A JP56073555 A JP 56073555A JP 7355581 A JP7355581 A JP 7355581A JP S57189328 A JPS57189328 A JP S57189328A
Authority
JP
Japan
Prior art keywords
recording
equalizer
level
characteristic
difference
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
Application number
JP56073555A
Other languages
Japanese (ja)
Inventor
Kuniaki Miura
Akira Shibata
Atsushi Yoshioka
Noboru Kojima
Keiichi Komatsu
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56073555A priority Critical patent/JPS57189328A/en
Publication of JPS57189328A publication Critical patent/JPS57189328A/en
Pending 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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/027—Analogue recording
    • G11B5/035—Equalising

Abstract

PURPOSE:To equalize a lower band wave characteristic and a color characteristic of an FM luminance signal in case of reproducing, by switching a recording equalizer and a recording current value in accordance with a kind of a tape whose reproducing frequency characteristic is different. CONSTITUTION:An FM luminance signal (d) and a color signal (e) are added by a mixing circuit 8 through a level regulator 14 and a level regulator 15, respectively, and after that, are applied to the first recording equalizer 16. The first recording equalizer executes constant equalization irrespective of a kind of a tape. To the first equalizing circuit, a recording amplifier 10 and a recording head 11 are connected through the first path consisting of the second equalizer 17, a level adjusting amplifier 18 and a gate 19, and the second path consisting of only a gate 20. The second equalizer corrects a difference of an FM lower band wave characteristic and a color characteristic due to a difference of a kind of a tape, and the level adjusting amplifier corrects a level difference of those reproducing outputs.
JP56073555A 1981-05-18 1981-05-18 Recording equalizer switching circuit Pending JPS57189328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56073555A JPS57189328A (en) 1981-05-18 1981-05-18 Recording equalizer switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56073555A JPS57189328A (en) 1981-05-18 1981-05-18 Recording equalizer switching circuit

Publications (1)

Publication Number Publication Date
JPS57189328A true JPS57189328A (en) 1982-11-20

Family

ID=13521600

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56073555A Pending JPS57189328A (en) 1981-05-18 1981-05-18 Recording equalizer switching circuit

Country Status (1)

Country Link
JP (1) JPS57189328A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59138185A (en) * 1983-01-28 1984-08-08 Hitachi Ltd Recording circuit of video tape recorder
JPS6120269A (en) * 1984-07-05 1986-01-29 Sony Corp Magnetic recording device
JPS6120270A (en) * 1984-07-06 1986-01-29 Sony Corp Magnetic recording and reproducing device
JPS6188691A (en) * 1984-10-06 1986-05-06 Sony Corp Adjusting method of video tape recorder
JPH02267775A (en) * 1989-04-07 1990-11-01 Sony Corp Magnetic recording and reproducing device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5416732A (en) * 1977-06-10 1979-02-07 Luftkonditionering Ab Method of and apparatus for burning fuel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5416732A (en) * 1977-06-10 1979-02-07 Luftkonditionering Ab Method of and apparatus for burning fuel

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59138185A (en) * 1983-01-28 1984-08-08 Hitachi Ltd Recording circuit of video tape recorder
JPH0134515B2 (en) * 1983-01-28 1989-07-19 Hitachi Ltd
JPS6120269A (en) * 1984-07-05 1986-01-29 Sony Corp Magnetic recording device
JPS6120270A (en) * 1984-07-06 1986-01-29 Sony Corp Magnetic recording and reproducing device
JPS6188691A (en) * 1984-10-06 1986-05-06 Sony Corp Adjusting method of video tape recorder
JPH02267775A (en) * 1989-04-07 1990-11-01 Sony Corp Magnetic recording and reproducing device

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