JPS57204688A - Video signal recording and reproducing device - Google Patents

Video signal recording and reproducing device

Info

Publication number
JPS57204688A
JPS57204688A JP56089283A JP8928381A JPS57204688A JP S57204688 A JPS57204688 A JP S57204688A JP 56089283 A JP56089283 A JP 56089283A JP 8928381 A JP8928381 A JP 8928381A JP S57204688 A JPS57204688 A JP S57204688A
Authority
JP
Japan
Prior art keywords
erasing
track
tracking
sampling pulse
pulse
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
JP56089283A
Other languages
Japanese (ja)
Inventor
Minoru Morio
Hiroshi Yoshioka
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP56089283A priority Critical patent/JPS57204688A/en
Publication of JPS57204688A publication Critical patent/JPS57204688A/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
    • G11B15/46—Controlling, regulating, or indicating speed
    • G11B15/467—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven
    • G11B15/4671—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling simultaneously the speed of the tape and the speed of the rotating head
    • G11B15/4672—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling simultaneously the speed of the tape and the speed of the rotating head with provision for information tracking

Landscapes

  • Management Or Editing Of Information On Record Carriers (AREA)

Abstract

PURPOSE:To get rid of turbulence of a tracking servomechanism, and to obtain a satisfactory reproduced picture, by providing a non-erasing period on a part of each track in case of erasing a recording agent track, and deciding the track phase in case of recording, in accordance with a pilot signal obtained from this section. CONSTITUTION:An erasing signal (i) formed by an erasing signal generating circuit 20 is supplied to erase heads 17a, 17b through changeover switches 21, 22. On the other hand, a head switching pulse RF-SW is provided to a sampling pulse generating circuit 26 through a 1/2 frequency-divider 15, a delaying circuit 23 and a 2-multiplier 25, and a sampling pulse being a switching control pulse is formed. This sampling pulse forms a non-erasing period so that an erasing signal (a) is not supplied to the erase head in its high level section. From a reproducing output of the erase head in this non-erasing period, a tracking error is detected, and the tracking sermomechanism is operated.
JP56089283A 1981-06-10 1981-06-10 Video signal recording and reproducing device Pending JPS57204688A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56089283A JPS57204688A (en) 1981-06-10 1981-06-10 Video signal recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56089283A JPS57204688A (en) 1981-06-10 1981-06-10 Video signal recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS57204688A true JPS57204688A (en) 1982-12-15

Family

ID=13966377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56089283A Pending JPS57204688A (en) 1981-06-10 1981-06-10 Video signal recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS57204688A (en)

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