JPS57206182A - Video tape recorder - Google Patents

Video tape recorder

Info

Publication number
JPS57206182A
JPS57206182A JP56091868A JP9186881A JPS57206182A JP S57206182 A JPS57206182 A JP S57206182A JP 56091868 A JP56091868 A JP 56091868A JP 9186881 A JP9186881 A JP 9186881A JP S57206182 A JPS57206182 A JP S57206182A
Authority
JP
Japan
Prior art keywords
signal
level
period during
lowered
phase
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
JP56091868A
Other languages
Japanese (ja)
Inventor
Koichi Ikata
Mineo Mino
Shingi Yokobori
Minoru Koda
Kazuhiro Yamanishi
Tadaaki Matsuo
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 JP56091868A priority Critical patent/JPS57206182A/en
Publication of JPS57206182A publication Critical patent/JPS57206182A/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
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/1808—Driving of both record carrier and head
    • G11B15/1875—Driving of both record carrier and head adaptations for special effects or editing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To obtain a high-quality slowmotion picture with no noise caused on a TV picture receiver, by setting the period during which the level of the reproduced picture signal is lowered at a position near a vertical synchronizing signal. CONSTITUTION:A period during which the level of the reproduced signal is lowered occurs before the trailing phase of a head switch pulse (a). Accordingly a waveform (j) is obtained by a noise level detecting circuit 14. Then the output (i) of an adverse sawtooth wave generating circuit 12 showing the phase of the pulse (a) is sample-held 15. Thus the DC voltage (k) corresponding to the phase of the pulse (a) against the noise position of a static envelope is obtained and then supplied to a plus terminal in the form of the threshold voltage of a comparator 17 to deliver a signal (f). The signal (f) is fed to a mono-multi 18, and accordingly a brake is applied for a certain time duration (g) to a capstan 22 by a motor braking circuit 19. Thus the shift of a magnetic tape is stopped. In such way, the period during which the level of the reproduced signal is lowered can be set at a position near a vertical synchronizing signal.
JP56091868A 1981-06-15 1981-06-15 Video tape recorder Pending JPS57206182A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56091868A JPS57206182A (en) 1981-06-15 1981-06-15 Video tape recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56091868A JPS57206182A (en) 1981-06-15 1981-06-15 Video tape recorder

Publications (1)

Publication Number Publication Date
JPS57206182A true JPS57206182A (en) 1982-12-17

Family

ID=14038530

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56091868A Pending JPS57206182A (en) 1981-06-15 1981-06-15 Video tape recorder

Country Status (1)

Country Link
JP (1) JPS57206182A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6098552A (en) * 1983-11-01 1985-06-01 Hitachi Ltd Variable speed control device of vtr

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS542018A (en) * 1977-06-07 1979-01-09 Victor Co Of Japan Ltd Magnetic tape run driving system for magnetic recording and reproducing unit
JPS5553981A (en) * 1978-10-16 1980-04-19 Victor Co Of Japan Ltd Magnetic reproducer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS542018A (en) * 1977-06-07 1979-01-09 Victor Co Of Japan Ltd Magnetic tape run driving system for magnetic recording and reproducing unit
JPS5553981A (en) * 1978-10-16 1980-04-19 Victor Co Of Japan Ltd Magnetic reproducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6098552A (en) * 1983-11-01 1985-06-01 Hitachi Ltd Variable speed control device of vtr

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