JPS55153013A - Controller for tape speed change-over of video tape recorder - Google Patents

Controller for tape speed change-over of video tape recorder

Info

Publication number
JPS55153013A
JPS55153013A JP6066679A JP6066679A JPS55153013A JP S55153013 A JPS55153013 A JP S55153013A JP 6066679 A JP6066679 A JP 6066679A JP 6066679 A JP6066679 A JP 6066679A JP S55153013 A JPS55153013 A JP S55153013A
Authority
JP
Japan
Prior art keywords
reference signal
circuit
phase
output
signal frequency
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
JP6066679A
Other languages
Japanese (ja)
Inventor
Shigeo Tanaka
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP6066679A priority Critical patent/JPS55153013A/en
Publication of JPS55153013A publication Critical patent/JPS55153013A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Velocity Or Acceleration (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

PURPOSE: To realize the diversity of the in-use time of a video tape recorder by making a difference between the reference signal frequency of a phase control loop in recording and the control pulse frequency in reproduction by switching.
CONSTITUTION: Phase comparator 61 makes phase comparison between output gate pulses of gate pulse generating circuit 60 and the output reference signal of reference signal generator 67 and outputs a DC voltage equivalent to the phase difference. By way of loop filter 61 and synthesizing circuit 52, the output of circuit 61 is sent to motor driving circuit 53 and switch circuit 55 provides the multi- stage switching of the turning speed. Here, reference signal frequency change-over switch circuit 65 switches to set the reference signal frequency of a phase control loop in recording and the control pulse frequency in reproduction to different values. Consequently, H-shaped arrangement on a recorded tape pattern comes into effect completely and a capstan servo circuit can easily be realized.
COPYRIGHT: (C)1980,JPO&Japio
JP6066679A 1979-05-17 1979-05-17 Controller for tape speed change-over of video tape recorder Pending JPS55153013A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6066679A JPS55153013A (en) 1979-05-17 1979-05-17 Controller for tape speed change-over of video tape recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6066679A JPS55153013A (en) 1979-05-17 1979-05-17 Controller for tape speed change-over of video tape recorder

Publications (1)

Publication Number Publication Date
JPS55153013A true JPS55153013A (en) 1980-11-28

Family

ID=13148873

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6066679A Pending JPS55153013A (en) 1979-05-17 1979-05-17 Controller for tape speed change-over of video tape recorder

Country Status (1)

Country Link
JP (1) JPS55153013A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6267990A (en) * 1985-09-19 1987-03-27 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6267990A (en) * 1985-09-19 1987-03-27 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device

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