JPS56123179A - Frame matching circuit - Google Patents

Frame matching circuit

Info

Publication number
JPS56123179A
JPS56123179A JP2763980A JP2763980A JPS56123179A JP S56123179 A JPS56123179 A JP S56123179A JP 2763980 A JP2763980 A JP 2763980A JP 2763980 A JP2763980 A JP 2763980A JP S56123179 A JPS56123179 A JP S56123179A
Authority
JP
Japan
Prior art keywords
pulses
driving
shaping circuit
pulse
frame matching
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
JP2763980A
Other languages
Japanese (ja)
Other versions
JPS6347027B2 (en
Inventor
Satoru Kamito
Yoshiaki Goto
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 JP2763980A priority Critical patent/JPS56123179A/en
Publication of JPS56123179A publication Critical patent/JPS56123179A/en
Publication of JPS6347027B2 publication Critical patent/JPS6347027B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape
    • H04N5/783—Adaptations for reproducing at a rate different from the recording rate

Landscapes

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

Abstract

PURPOSE:To enable smooth frame matching in reproducing a track after a tape stops, by controlling the pulse width of a head motor driving pulse shaping circuit with a noise shaped pulse. CONSTITUTION:Driving pulse shaping circuit 22 driving motor 24 generates driving pulses by receiving head change-over pulses from input terminal 21. Noise shaping circuit 26, on the other hand, generates noise shaped pulses of a preset width by receiving noises from input terminal 25. Noise shaped pulses are inputted to the pulse width control terminal of driving pulse shaping circuit 22 and motor 24 is controlled with the driving pulses that correspond to the phase shift between the noise shaped pulses and driving pulses. Thus, accurate frame matching can be done without adjusting the pulse width.
JP2763980A 1980-03-05 1980-03-05 Frame matching circuit Granted JPS56123179A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2763980A JPS56123179A (en) 1980-03-05 1980-03-05 Frame matching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2763980A JPS56123179A (en) 1980-03-05 1980-03-05 Frame matching circuit

Publications (2)

Publication Number Publication Date
JPS56123179A true JPS56123179A (en) 1981-09-28
JPS6347027B2 JPS6347027B2 (en) 1988-09-20

Family

ID=12226502

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2763980A Granted JPS56123179A (en) 1980-03-05 1980-03-05 Frame matching circuit

Country Status (1)

Country Link
JP (1) JPS56123179A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5963579U (en) * 1982-10-20 1984-04-26 シャープ株式会社 video tape recorder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5177021A (en) * 1974-12-27 1976-07-03 Matsushita Electric Ind Co Ltd

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5177021A (en) * 1974-12-27 1976-07-03 Matsushita Electric Ind Co Ltd

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5963579U (en) * 1982-10-20 1984-04-26 シャープ株式会社 video tape recorder

Also Published As

Publication number Publication date
JPS6347027B2 (en) 1988-09-20

Similar Documents

Publication Publication Date Title
DE3382129D1 (en) SPEED CONTROL WITH PULSE WIDTH MODULATION.
CA2058396A1 (en) Light-quantity control device
JPS5280063A (en) Reversible pulse motor system and watch
JPS5258807A (en) Motor driven adjustment and control drive unit
JPS56123179A (en) Frame matching circuit
CA1036043A (en) Infinitely variable orifice for part throttle control
JPS5718175A (en) Slow motion reproducing method
JPS5632885A (en) Tracking correction unit of variable-speed vtr
JPS573242A (en) Reel motor driving circuit for high-speed playback
JPS5717283A (en) Magnetic video recording and reproducing device
JPS52156323A (en) Driver circuit for pulse motor
JPS5320305A (en) Tracking controlling system
JPS5632886A (en) Still reproducing device of vtr
JPS5718062A (en) Endless tape device
JPS56116382A (en) Vtr with still function
JPS57147126A (en) Head tracking controller
JPS5689178A (en) Tape running control device
JPS5769551A (en) Driving mechanism for tape recorder
JPS55150792A (en) Phase control circuit
JPS52111706A (en) Magnetic recording and reproducing system
JPS57113464A (en) Head positioning device
JPS6426396A (en) Pulse generator for controlling stepping motor
JPS6466854A (en) Magnetic recording and reproducing device
JPS56107784A (en) Controlling method of dc/dc converter
JPS6449152A (en) Servo circuit in recording and reproducing device