JPS6417581A - Rotary head type magnetic recording and reproducing device - Google Patents

Rotary head type magnetic recording and reproducing device

Info

Publication number
JPS6417581A
JPS6417581A JP62172771A JP17277187A JPS6417581A JP S6417581 A JPS6417581 A JP S6417581A JP 62172771 A JP62172771 A JP 62172771A JP 17277187 A JP17277187 A JP 17277187A JP S6417581 A JPS6417581 A JP S6417581A
Authority
JP
Japan
Prior art keywords
rotary head
video signal
revolutions
integer
reproduced
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
JP62172771A
Other languages
Japanese (ja)
Inventor
Masaharu Kobayashi
Takao Arai
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 JP62172771A priority Critical patent/JPS6417581A/en
Publication of JPS6417581A publication Critical patent/JPS6417581A/en
Pending legal-status Critical Current

Links

Landscapes

  • Television Signal Processing For Recording (AREA)

Abstract

PURPOSE:To record and reproduce a video signal with use of DAT by selecting the number of revolutions of a rotary head to make the product of the number of magnetic heads and the number of revolutions of the rotary head odd-number times of the field frequency of a video signal that is recorded/reproduced. CONSTITUTION:With use of the rotary head type magnetic recording and reproducing device DAT which records/reproduces a digital audio signal, video signal processing circuits 3, 11 is added as well as a video signal recording/reproducing magnetic head is added on the rotary head 15. Further, the number of revolutions the rotary head 15 is so set that the product of the number of magnetic heads and the number of revolutions of the rotary head comes to be integer-number times of the field frequency of a video signal that is recorded/ reproduced (in case of NTSC system, the rate is integer-number times of 900r.p.m., but is case of CCIR system, the rate is integer-number times of 750r.p.m.). As a result, video signals can be recorded/reproduced on/from integer- number pieces of tracks consecutively in the unit of one field or one frame in synchronism with the rotation of a head.
JP62172771A 1987-07-13 1987-07-13 Rotary head type magnetic recording and reproducing device Pending JPS6417581A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62172771A JPS6417581A (en) 1987-07-13 1987-07-13 Rotary head type magnetic recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62172771A JPS6417581A (en) 1987-07-13 1987-07-13 Rotary head type magnetic recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS6417581A true JPS6417581A (en) 1989-01-20

Family

ID=15948029

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62172771A Pending JPS6417581A (en) 1987-07-13 1987-07-13 Rotary head type magnetic recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS6417581A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011096299A1 (en) 2010-02-02 2011-08-11 花王株式会社 Process for production of polylactic acid resin composition

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011096299A1 (en) 2010-02-02 2011-08-11 花王株式会社 Process for production of polylactic acid resin composition

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