JPS5555406A - Recording method of multiple information - Google Patents

Recording method of multiple information

Info

Publication number
JPS5555406A
JPS5555406A JP12623778A JP12623778A JPS5555406A JP S5555406 A JPS5555406 A JP S5555406A JP 12623778 A JP12623778 A JP 12623778A JP 12623778 A JP12623778 A JP 12623778A JP S5555406 A JPS5555406 A JP S5555406A
Authority
JP
Japan
Prior art keywords
vtr
pulses
duty cycle
magnetic tape
level
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
JP12623778A
Other languages
Japanese (ja)
Inventor
Tadaaki Fujii
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 JP12623778A priority Critical patent/JPS5555406A/en
Publication of JPS5555406A publication Critical patent/JPS5555406A/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
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/05—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container
    • G11B15/087—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container by sensing recorded signals

Landscapes

  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

PURPOSE:To use a normal VTR to multiple sound surely by swithcing the duty cycle of control pulses of a magnetic tape according to multiple kinds. CONSTITUTION:When one and the other of terminals 9 and 10 of monostable multivibrator 2 are made high-level and low-level, multivibrator 2 traiggerred by oscillator 1 generates pulses of three different kinds of duty cycle. When these pulses are recorded on the control track of the magnetic tape of a VTR as stereophonic and monophonic sound discrimination isgnals, the VTR is controlled by equivalent control signals and information idicating multiple kinds is obtined by the duty cycle ration of reproducing control pulses at a reproducing time, and therefore, the normal VTR is used to record and reproduce multiple information surely without exchange of parts, etc.
JP12623778A 1978-10-16 1978-10-16 Recording method of multiple information Pending JPS5555406A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12623778A JPS5555406A (en) 1978-10-16 1978-10-16 Recording method of multiple information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12623778A JPS5555406A (en) 1978-10-16 1978-10-16 Recording method of multiple information

Publications (1)

Publication Number Publication Date
JPS5555406A true JPS5555406A (en) 1980-04-23

Family

ID=14930177

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12623778A Pending JPS5555406A (en) 1978-10-16 1978-10-16 Recording method of multiple information

Country Status (1)

Country Link
JP (1) JPS5555406A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH041974A (en) * 1990-04-17 1992-01-07 Mitsubishi Electric Corp Magnetic recording/reproducing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH041974A (en) * 1990-04-17 1992-01-07 Mitsubishi Electric Corp Magnetic recording/reproducing device

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