JPS55105846A - Tracking circuit of vtr - Google Patents

Tracking circuit of vtr

Info

Publication number
JPS55105846A
JPS55105846A JP1038179A JP1038179A JPS55105846A JP S55105846 A JPS55105846 A JP S55105846A JP 1038179 A JP1038179 A JP 1038179A JP 1038179 A JP1038179 A JP 1038179A JP S55105846 A JPS55105846 A JP S55105846A
Authority
JP
Japan
Prior art keywords
reference signal
delay
supplied
control system
cycle
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.)
Granted
Application number
JP1038179A
Other languages
Japanese (ja)
Other versions
JPH0223936B2 (en
Inventor
Yasunori Kobori
Satoshi Ito
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 JP1038179A priority Critical patent/JPS55105846A/en
Publication of JPS55105846A publication Critical patent/JPS55105846A/en
Publication of JPH0223936B2 publication Critical patent/JPH0223936B2/ja
Granted 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four

Abstract

PURPOSE:To secure the large control range without changing the loop gain as well as enhance the interchangeability by securing the different phase for the reference signal to be supplied to the capstan control system from the phase to be supplied to the drum control system. CONSTITUTION:The tracking circuit consists of capstan control system 1, drum control system 2 and reference signal generation circuit 3 each. In such constitution, the phase is made to gain by 1/4 cycle for reference signal 4B which is supplied to trapezoid wave generator 13 of system 1 in comparison with the reference signal which is supplied to delay mono-multi 22 of system 1. As a result, the variable width of the delay amount of delay output 23 becomes about the half of synchronization of reference signal 4A. In other words, the central value of the delay amount is equivalent to about the half of the delay cycle, and thus the variable width becomes identical between the plus and minus directions. And thus the delay variable range covers almost entire cycle. Accordingly, the tracking control range can be increased to nearly entire cycle. In such way, the tracking dispersion can be absorbed to enhance the interchangeability of the VTR.
JP1038179A 1979-02-02 1979-02-02 Tracking circuit of vtr Granted JPS55105846A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1038179A JPS55105846A (en) 1979-02-02 1979-02-02 Tracking circuit of vtr

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1038179A JPS55105846A (en) 1979-02-02 1979-02-02 Tracking circuit of vtr

Publications (2)

Publication Number Publication Date
JPS55105846A true JPS55105846A (en) 1980-08-13
JPH0223936B2 JPH0223936B2 (en) 1990-05-25

Family

ID=11748541

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1038179A Granted JPS55105846A (en) 1979-02-02 1979-02-02 Tracking circuit of vtr

Country Status (1)

Country Link
JP (1) JPS55105846A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5276905A (en) * 1975-12-23 1977-06-28 Matsushita Electric Ind Co Ltd Controlling apparatus for rotating bodies

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5276905A (en) * 1975-12-23 1977-06-28 Matsushita Electric Ind Co Ltd Controlling apparatus for rotating bodies

Also Published As

Publication number Publication date
JPH0223936B2 (en) 1990-05-25

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