JPS5478108A - Magnetic recorder-reproducer - Google Patents

Magnetic recorder-reproducer

Info

Publication number
JPS5478108A
JPS5478108A JP14495177A JP14495177A JPS5478108A JP S5478108 A JPS5478108 A JP S5478108A JP 14495177 A JP14495177 A JP 14495177A JP 14495177 A JP14495177 A JP 14495177A JP S5478108 A JPS5478108 A JP S5478108A
Authority
JP
Japan
Prior art keywords
magnetic tape
speed
circuit
recording
switching control
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
JP14495177A
Other languages
Japanese (ja)
Inventor
Kanji Yoshikawa
Yoshinori Masuda
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 JP14495177A priority Critical patent/JPS5478108A/en
Publication of JPS5478108A publication Critical patent/JPS5478108A/en
Pending legal-status Critical Current

Links

Landscapes

  • Television Signal Processing For Recording (AREA)

Abstract

PURPOSE: To prolong the recordable time of magnetic tape by providing a magnetic tape running speed decreasing means and carrier deviating means.
CONSTITUTION: A switching control system for 2 hours and 4 hours consisting of a 2-4 switching control circuit 15 and speed switching circuit 16 is provided. At the time of diagonally guiding and running a magnetic tape on a rotary head and forming oblique recording tracks on the magnetic tape, the speed switching circuit 16 is controlled by operating the 2-4 switching control circuit 15 to change the rotating speed of a capstan drive motor 8, by which the running speed of the magnetic tape 17 is made 1/2 that at the 4-hour recording and 2-hour recording. At the same time, the frequency of the carrier of an FM modulaton circuit 2 is made 1/2f H(2n+1) [n is integer, f H is horizontal synchronizing signal frequency] at every 1 track of the magnetic tape 17. Thereby, twice longer time recording is made possible with the magnetic tape 17 of the same length.
COPYRIGHT: (C)1979,JPO&Japio
JP14495177A 1977-12-05 1977-12-05 Magnetic recorder-reproducer Pending JPS5478108A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14495177A JPS5478108A (en) 1977-12-05 1977-12-05 Magnetic recorder-reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14495177A JPS5478108A (en) 1977-12-05 1977-12-05 Magnetic recorder-reproducer

Publications (1)

Publication Number Publication Date
JPS5478108A true JPS5478108A (en) 1979-06-22

Family

ID=15373975

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14495177A Pending JPS5478108A (en) 1977-12-05 1977-12-05 Magnetic recorder-reproducer

Country Status (1)

Country Link
JP (1) JPS5478108A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62154203A (en) * 1985-12-26 1987-07-09 Matsushita Electric Ind Co Ltd Video signal recording device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62154203A (en) * 1985-12-26 1987-07-09 Matsushita Electric Ind Co Ltd Video signal recording device

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