JPS5542315A - Servo-circuit of vtr - Google Patents

Servo-circuit of vtr

Info

Publication number
JPS5542315A
JPS5542315A JP11360578A JP11360578A JPS5542315A JP S5542315 A JPS5542315 A JP S5542315A JP 11360578 A JP11360578 A JP 11360578A JP 11360578 A JP11360578 A JP 11360578A JP S5542315 A JPS5542315 A JP S5542315A
Authority
JP
Japan
Prior art keywords
monostable multivibrator
output
pulse
dividing
delay
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
JP11360578A
Other languages
Japanese (ja)
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 JP11360578A priority Critical patent/JPS5542315A/en
Publication of JPS5542315A publication Critical patent/JPS5542315A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce a shift in tracking due to temperature variation and aging variation at long play by triggering a delay monostable multivibrator by a vertical synchronizing signal in a next period after a dividing monostable multivibrator is triggered.
CONSTITUTION: Vertical synchronizing signal 1 changes into division output 3 through dividing monostable multivibrator 2. On the other hand, output 29 with synchronizing pulse 1b sampled by gate 28 is inputted to switch circuit 6 together with division output 3. The output of switch circuit 6 is passed through a recording amplfier to record control pulses 9 and 9' on a magnetic tape. Then, division output 3 is supplied to drum sero-system 27 to perform phase control. At this time, the synchronizing pulse triggering delay monostable multivibrator 4 is pulse 1b in a next period when dividing monostable multivibrator 2 is triggered, so that delay value t' for obtaining control pulse 9' at long play will lessen.
COPYRIGHT: (C)1980,JPO&Japio
JP11360578A 1978-09-18 1978-09-18 Servo-circuit of vtr Pending JPS5542315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11360578A JPS5542315A (en) 1978-09-18 1978-09-18 Servo-circuit of vtr

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11360578A JPS5542315A (en) 1978-09-18 1978-09-18 Servo-circuit of vtr

Publications (1)

Publication Number Publication Date
JPS5542315A true JPS5542315A (en) 1980-03-25

Family

ID=14616444

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11360578A Pending JPS5542315A (en) 1978-09-18 1978-09-18 Servo-circuit of vtr

Country Status (1)

Country Link
JP (1) JPS5542315A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57115693A (en) * 1981-01-09 1982-07-19 Mitsubishi Heavy Ind Ltd Anticorrosive treatment of heat exchanger
US4671351A (en) * 1985-07-17 1987-06-09 Vertech Treatment Systems, Inc. Fluid treatment apparatus and heat exchanger
US4741386A (en) * 1985-07-17 1988-05-03 Vertech Treatment Systems, Inc. Fluid treatment apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57115693A (en) * 1981-01-09 1982-07-19 Mitsubishi Heavy Ind Ltd Anticorrosive treatment of heat exchanger
US4671351A (en) * 1985-07-17 1987-06-09 Vertech Treatment Systems, Inc. Fluid treatment apparatus and heat exchanger
US4741386A (en) * 1985-07-17 1988-05-03 Vertech Treatment Systems, Inc. Fluid treatment apparatus

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